Document 5DzmK7Vqxe7d9LZyOr5xxKpMD

FILE NAME Industrial Hygiene Foundation IHF DATE 1999 DOC IHF028 DOCUMENT DESCRIPTION IH Digest References with Barry Castleman Notes Barry Castleman Sc.D. Environmental Consultant Mr. Dean Swartz January 19 1999 I have reviewed the Industrial Hygiene Digest issues I have for the following months during the period that GATX was a member of the Air Hygiene Foundation as it was called until 1941 10 and 12 1937 1-3 5-6 9-12 1938 and 1 1939. There were many abstracts on dust sampling and dust control engineering but I have only copied those that specifically mention asbestos There was also one that referred to dust control work apparently reported by GATX on the use of covered hopper cars to permit dust suppression by companies using railcars full of powdered arsenic or silica etc. cover page Jan. 1938 Two hours of my bill is for examining these documents I think the other 4 issues in this time period are available at the National Library of Medicine which you may wish to examine if you want to see what they contain file thru 1943 B.I. Castleman 01 2412 PICKWICK ROAD BALTIMORE MD 21207-6631 tel 410-448-2648 bcastle@mail.bcbcasptle@maill.bcpl.li.b.md.uslbicastleb@mail.b.cpl.limb.md.usd.bcastule@mail.bcspl.lib.md.us fax 410-448-2368 J Cy) (3a)e ( iL - DO DO DO { love GOGO GO GO GO GO GO t ABRAMS ABRAMS ABRAMS ABRAMSABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS RRE E RRE E RE RE RE ON ste QOL 7 . * t t ' ' Air Hygiene Foundation of America 4400 Fifth Ave. Pittsburgh Pa December 10 1937 . 268- 4Inc.26 8-8 4 REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES A News Items News Items 589 MICHIGAN FOSTUM Ind Med 6 562 Oct. 1937 An Occupational Disease Symposium under the auspices of the Department of Labor and Industry of the State of Michigan was held at Detroit on Oct. 21 and 22 Several papers were presented and will be abstracted as they appear OCCUPATIONAL DISEASE SATOSTUM Ind Med 6 550-3 Oct. 1937 A symposium on industrial diseases was held at Northwestern University on 27 and 28. Fapers on silicosis allergy industrial solvents and general dustrial health were presented and will be abstracted as they appear .., Sept. in 591 A PLAN FOR INSTRUCTION IN INDUSTRIAL HYGIENE Ind Med Rapid developments in industrial hygiene throughout the 6 566-71 Ost country have old occupational demonstrated that the weakest link in plans for coping with occupational ease plant sanitation and occupational disease legislation is the adequate training of physicians and engineers in those subjescubjecttses sseusbjectses instruction has been developed by the Bureau of Industrial Industrial Hy Department grees will associated of Health of Detroit Didactic and laboratory worke be given by the schools sending their students but PFE laboratory practice for a unit of 3 months or longe Tim will be provided by the Bureau McCord will furnish details to The above Bureau directed by interested persons or institutio institutio A eet 592 384 1987 FIGHTING DUST HAZARD BY GENERAL ELECTRIC Ceram Age 29 Nov. imisg The General Electric Co. is now engaged in an extensive program for el dust in its porcelain plant Approximately 35,000 has bTeheeneqsupiepntmenotn ai qrs th and some old equipment has been discarded or replaced very . water type and has proved highly successful Dust counts show . couraging results and are still being made with the receptacle directly directly a * the breathing zone of the workmen adereaasntnastedsidtteruaistbeasedesr- 593 EXHIBIT AT 1937 STATE FAIR Ind Bull Sept. 1937 The New York State Department of Labor sponsored sponsored an industrial at the State Fair in September built around the central theme hygiene unhibit of projen for the prevention of dust diseases in industry A large painting silicosis was surrounded with cards containing information about the various silica industries and pictures of lungs showing silicosis fibrosis of efficient and practical exhaust sys culosis Following were pictures a for use in typical dusty industries Wax models of hands showing various types were displayed and dust and gas detectaonrds owtehreer amle asesthaikyThe exhibit is also being shown at schools conventions gr 1920-334 1920-34 w . B.I. Castleman 02 ~ 86I86I 866I 866I JOQUIOAON JOQUIOAON JOQUIOAONJOQUIOAONJOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON ABRAM ABRAM ABRAMABRAM ABRAM ABRAM ABRAM ABRAM ABRAM ABRAM ABRAM RRE E RE JON JON JON JON References on Recent Literature - 6 858 611 LAW OF SIZE DISTRIBUTION AND STATISTICAL DESCRIPTION OF PARTICULATE MATERIALS 858 P.S.Roller J. Franklin Inst 223 609-33 1937 000 of 000 This is a mathematical treatment the results obtained with air separator de- - scribed in our abstrect No. 362. A law of size distribution has been discovered which relates the weight ticle The author deals percentage and from with finely divided this the frequency to size of par- clays litharge silica cement gMu gMu lime feldspar talc and the like as used in the ceramic industry It seems probable that the method can be applied to hygienic problems 612 INFROVED MITHOD FOR DETERMINING FASAL FILTRATION OF JUST G. LEHMANN Arbeitz- physiol 9 569-71 1937 German Time is saved by the use of a photometric method instead of the konimeter for counting dust particles The employed The apparatus must Zeiss Pulfrich photometer and a special be calibrated for each kind of dust stage are THE SIGNIFICANCE OF NASAL DUST FILTRATION IN ASBESTOSIS G. Lehmann Arbeits- ) physiol 9 572-3 1337 German asbestos The author determined the nasal filtering efficiency of 73 workers in an plant Most of the employees had not worked long and only 1 medium to severa case of asbestosis was found with 17 light and 24 incipient cases He concludes that nasal filtering efficiency is as significant in asbestosis as it is in . silicosis 614 SELSTO- PATHOLOGICAL AND ANATOMICAL QUESTIONS IN CASES OF FNEUMOCONIOSIS SEVERE i ) SIS W. di Biasi Med Welt 11 1234-7 1937 German The author gives a clear discussion of pathological and anatomical changes in the development of pneumoconiosis silicosis and emphasizes the fact that ne fal have been seen without exposure to quartz In hundreds pneumoconiotic changes connective tissue growth in of cases in the Ruhr district he has never seen lungs completely blackened by coal dust unless rock dust was also present Claims to the contrary have not been confirmed by autopsy findings In asbestosis the of diffuse connective tissue is greater in the lower part of the lung than growth to the mechanical action of as- in the upper The author attributes this growth bestos DUST dius CONTENT OF AN ASEESTOSIS LUNG AND THE NATURE OF ASBESTOSIS BODIES N. and A. Bygden Arch.f. Gewerbepathol u Gewerbehyg 8 26-70 1937 Sun- ) German careful chemical experiments on the asbestos in the lung is This long paper reports asbestos than hornblende and asbestosis bodies Although much more serpentine the latter was found exclusively in the lungs examined The used in industry asbestosis body sheaths are formed not only around asbestos but also around sim- of other substances No support has been found for the belief that ilar crystals asbestos causes a chemical decomposition in the lung The gel substance of the sheath consists of iron oxide phosphoric acid and a protein This gel substance originates entirely from the body fluids and since the iron content is high 40 as oxide the most plausible suggestion is the blood The cause of the sheath formation is not related to the chemical nature but to the rigid and sharp needle form The authors believe that the fibrosis can also be attributed to this 03117776 B.I. Castleman 03 1199292 0 78 9 Air Hygiene Foundation of America Inc. 1992 4400 Fifth Avenue Pittsburgh Fa January 10 1938 bo: Sd 1992 1992 1992 ony REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES November November , A News Items November NoveNmobevrember -} GOOD HOUSEKEEPING AD SAFETY IN FOUNDRIES AND INDUSTRIAL CODES AND OCCUPATIONAL 37-30 Assocy DISEASE LEGISLATION Reprint No. American Foundrymen's Foundrymen's American 222 Inc. | dam , November NoNvoevmembbeerrNovemberNovember November Chicago 1937 61 pp price 1.50 of the association This booklet consists of papers presented at the last meeting ~ Among the subjects treated are eye and respiratory protection in the foundry silicosis good housekeeping in the foundry industrial codes and their applica- Abstracts of these papers will ap- tions and occupational disease legislation November November 7 - 7 ABRAMSABRAMS ABRAMS ABRAMSABRAMS ABRAMS ABRAMS * ; ABRAMS ABRAMS ABRAMS pear in a future bulletin percentage 2 COVERED HOPPER CAR FOR GRAVITY UNLOADING The following note was sent to us with the statement that it might be of interest to the members of the Foundation The dust problem in loading and unloading raw materials shipped by rail in bulk has long been known as a serious hazard In most instances fine granular products have been pulled out of a box car by means of a power shovel operated by one or more men within the dust filled car Not only is the car itself loaded with dust but pulling the commodity into a chute at the edge of the box car allows a good of the material to be blown into other near parts of the plant problem has become so acute in industries using silica sand powdered ar- } burned lime and other hazardous commodities that the General American Transportation LaSalle Street Chicago have devolopod Transportation Corporation 135 South car that will unload built and leased to shippers or consignces a covered hopper granular products by gravity An inexpensive track hopper is usually used in onjunction with the oar and a boot between the hopper and the car makes the un- ' loading operation both dust proof and economical B Papers on Dust Dust Diseases and General Industrial Hygiene ABRAMS ABRAMS RE RE RE RE RE RE RE JONJON 3 DUST HAZARD AMONG FOUNDRYMEN L. H. Osmond Am J. Roentgenol and Rad Therapy 38 122-8 July 1937 See note on final page The author reports roentgenological and clinical surveys of the foundry employees of ' large plant in Pittsburgh All workers undergo an annual physical examina tion and careful histories are taken showing the location of each man's work available for each loca- since he entered the company's service Dust counts are tion They range from 13.1 million particles per cubue foot in the molding room but a count of 240 million was ob- to 44.9 million in the coromaking department the dust showed 52 free tained during the night shakeout Chemical analysis of sili silica and 10.3 calcium and magnesium silicates The incidence of simple cosis in the entire group including many who had worked less than 5 years was 5.5 In those with over 20 years experience silicotic fibrosis was found in 44 including 32 without infection and 12 with infection The disability of those without infection was practically nil while it was frequent in those who had complicating infection Little correlation between incidence and those workers was 517 dust per concentration was observed The death rate among all 03117794 o ~ B.I. Castleman 04 1992 19 21992 1992 1992 1992 1992 1992 1992 - November November NovemberNovember November November November November BRAMB BRAMB BRAMB BRAMBBRAMB BRBAMRBAMB BRAMB RRE E ON ON References to Recent Literature - 4 11 PNEUMOCONIOSES OF THE WORKER K. Wider Ztschr f Gewerbehyg u Unfall 80782 44 131-5 Silicosis have been MWB some from 1937 became compensable in Austria on April reported in the Workmen's Compensation lignite mines In the metal industry 1 1935. Since then Office of these 171 206 are cases miners most cases are among sandstone grinders and sandblasters IV THE ASBESTOS BODY AND SIMILAR OBJECTS IN THE LUNG 12 PULMONARY ASBESTOSIS Medical College of the State of South Kenneth M. Lynch M.D. Dept. of Pathology J.A.M.A. 674-8 Dec. 11 1937 Re- Carolina Charleston S. Carolina 109 microns prints probably obtainable from author asbestos body also called asbestosis body is an object 10 to over central translucent The typical and 1 to 12 microns thick and is composed of a 1f0i0ber or needle crystal of asbestos with an enveloping shiny golden So or metbirmoewsnisiht substance constructing various architectural figures gelantinous and sometimes spherical A Prussion blue reaction for iron in is beaded or clubbed in the lung especially These bodies may be found at various places is given alveoli and in the tissues along the lymphatic route usual- usual- the bronchioles the surprisingly long consider- ly shorter at a distance from the alveoli but often fibrosis around them the distance they have traveled They sometimes cause ing found in the sputum of those exposed to as- but not necessarily They are also does not indicate the bestos dust but their presence or absence in the sputum to the absence of asbestosis their presence only shows that exposure presence or bodies have been found in persons exposed to coal dust has occurred Similar who have died of heart failure rheumatism and arteriosclero- does not al- dust and in others without known heavy dust exposure Exposure to asbestos dust sis produce asbestos bodies bare fibers have been found in the lungs of animals in cases of silicosis ways The author has seen silica particles similarly enveloped not always so highly colored It is suggested that other fibrous or crystalline dusts not yet studied may form similar bodies 13 BLOOD EXAMINATIONS IN PULMONARY FIBROSIS OF HEMATITE IRON ORE MINERS J. Craw Tubercle 19 8-1e8xamOicntaotbieorns 1o9f3h7ematite miners in West Cumberland England the In radiographic show a definite and dense shadow apart from any accompany- hematite accumulations silicosis when a miner complains ing fibrosis and there is a tensdyemnptcoymsto anddiagtnhoeseray of the test show generalized of of unfitness and his pulmonary The silica content of inhaled dust however is low and in spite nodulation 20 to 30 years work and general nodulation in all lung fields For these the miners are reasons hematolog- fit for work and are not short of breath perfectly ical work was instituted as an essential in diagnosis Routine procedure includof the red cells 2 ed the following determinations 1 sedimentation rate white cell count 3 differential white cell count and 4 the polymor- total in 6 cases are given with case phonuclears count of von Bonsdomrifnfers Tshteudfiienddin2g0s normal miners had no complaint 30 histories - Of the 50 hematite fibrosis while and no ray or physical signs of pulmonary of breathlessness disability in varying degrees with positive ray find- complained of pulmonary siderosis without accompanying fibro- ings Many miners develop a pure pulmonary silicosis of uncomplicated type sis and their blood picture is normal and the ratio of poly- shows a definite increase in porcentage of lymphocytes and becomes 1 or less The sedimentation rate morphonuclear cells to lymphocytes the sedimentation rate in- nuclear count are normal When infection is present count increases and there is a leucocytosis which may ap- creases the nuclear the method is recom- proach a septic count Although the results are preliminary and of of sidorosis without fibrosis mondod for aiding the differential diagnosis at an tuberculosis or other infective agents silicosis and for detecting early stage 03117797 - B.I. Castleman 05 1992 1992 19921992 1992 1992 November November November November November NovemberNovember November November ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS KE KEKE KE KE KE KE ONON ON 807903 ^' Air Hygiene Foundation of America Inc. 8807903 T.Z. T.Z. HylanHylan 4400 Hylan Fifth Avenue T.Z. Pittsburgh Pa HWBB File February 10 1938 HWBB REFERENCES TO RECENT LITERATURE ON DUST DISEASES News Items 98 NEW ROCK DRILL DUST CONTROL Eng News Rec 119 1058-61 Dec. 30 1937 A group of contractors in the New York area under the direction of a consulting mining engineer have developed a dust control system involving wet drilling principles The system was designed to meet requirements of the New York State silicosis law calling for approved dust control methods on every rock drilling job in the State The first unit has been put in operation on the Sixth Ave. subway 6 The equipment consists of wet drills and ventilating pipes trifugal fan at a distance Water is sprayed on the fan and connected to the combined a cen- dust and water is forced at right angles into outlet pipes The ventilating system has a capacity of 10,000 cubic feet of operating conditions are usually under cubic foot The contrectors point out air per minute Impinger dust counts under 5 million particles under 10 microns per objections to the dry drilling with local exhaust hoods and present several points of evidence against the existence of a pneumonia hazard in wet drilling 99.NET DRILLING FOR SILICOSIS CONTROL Eng News Rec 120 118 Jan. 20 1938 process This note reports progress in the testing of the wet drilling system just described Tests were made at Totts Gap Pa the Letchworth Village site being unsuitable Tests were made during June to November 1937. On the basis of the -- results the contractors in cooperation with the Compressed Air Institute submitted an application for approval of wet drilling with ventilation and the State proposed a code based on the application and tests The code and suggested rules are now under consideration by a new advisory committee and if their report is favorable the early approval of wet drilling with ventilation is expected as an accepted method of control under the Silicosis Act 100 DEALING WITH VIOLATIONS OF THE WORKEN'S COMPENSATION LAW Survey of Labor Law Admin 8 December 1937 Effective campaign against employers who flout or evade the law has been waged by the New York Labor Department with the cooperation of the Attorney General according to Industrial Commissioner E. F. Andrews The principal type of evasion which arose during the depression was the leasing of chairs or space to workers or partnership or contract agreements The weapons used are first education and then prosecution Many employers their organizations unions and banking and financial organizations have cooperated in the educational program The law operate has also been violated by physicians in various respects including solicitation Magrant advertising false testimony padded medical bills refusal to without written orders and limitation or discontinuance of treatment for fear th bill will not be paid In handling these violations the Labor Department has th ingsupport of the courts and of county medical societies A committee is now con- sidering complaints against physicians as part of the larger problem of establish sound principles of medical practice for possible future amendments to the law 03117815 B.I. Castleman 06 1992 192192 1992 * November November NovembeNrovember NovemberNovember November Teal AM AB KX KX JONJON 6 87984 References to Recent Literature - 2 6687984 101 6 87984 PREPARING STATE INFORMATION INFORMATION FOR WORKERS Survey of Labor Law Admin 8 Dec. 1937 The New York State Department of Labor has just issued a 32 page vest pocket ro) booklet concerning the State Unemployment Insurance Law entitled Information for lasa Employees It explains the procedures for filing applications for laws and for Be unemployment insurance benefits To meet the public demand 5 million copies are being printed 102 OCCUPATIONAL DISEASE COMFENS.TION Pittsburgh Med Bull 27 71 Jan. 22 1938 and other sources A new occupational disease compensation law went into effect January 1 in Fennsyl- vania the 21st State to adopt such legislation The causes of compensable in- dustrial disease are specifically listed They include poisoning from lead mer- arsenic manganese phosphorus methanol carbon bisulfide hydrocarbon dis- amido or amino deriva- cury tillates halogenated hydrocarbons benzol and its nitro tives radium ray chromic acid and its salts infection from tar pitch bi- tumen mineral oil paraffin oils cutting compounds lubricants dust liquids and anthrax and injury from asbestosis silicosis or anthra- fumes gases vapor cosis miner's asthma and caisson disease compressed air illness Silicosis and asbestosis are not compensable for temporary or partial dis silicosis not exceed 3,600 in any one case. These limite ability employers liability may to the other industrial diseases named The cost will bear mor tions do not apply industrial disease hazards heavily on the industries having the greatest tabulated and an- A recent survey of industrial disease hazards in Fennsylvania alyzed by a WPA project involving a field survey of 16,000 industrial establishexposed to industrial disease ments indicates that the total number of employees hazards was 672,010 of which 445,671 will be covered by the new law Copies of the Occupational Disease Compensation Law are obtainable from the Depar- ment of Labor and Industry at Harrisburg 103 TRAINING PENNSYLVANIA FACTORY INSPECTORS Survey of Labor Law Admin 3 Dec. 13 Certificates were recently awarded to 90 Pennsylvania State factory inspectors who had completed the training offered in three separatethe2 wPeenenkssylvsaanfieatyDeanpdarthmeeanltth of training courses These 3 courses were aganized by with the University of Pennsylvania University Labor and Industry in cooperation of Pittsburgh and Pennsylvania State College assisted by members of the safety and health staff of the Division of Labor Standards The schools supplied instruc tion and classroom and study facilities The practical lectures on safety and health subjects were supplemented by inspection trips to a variety of industrial and with unsatisfactory conditions These trips were fol plloawnetds bwyitchlasssartoiosfmacdtiosrcyussion of the hazards observed with proposed and accom- plished methods for their correction Daily examinations and a final 3 hour exare being made and special amination were given Plans for continued training considered for in- courses in safety promotion and safety organization are being who have indicated ability for advanced work Addressing the candidates spectors of Labor Perkins forecast a new type of factory in- for certificates Secretary would elevate his pr spector who through training study and practical service fession to a high plane 104 DRAFTING RULES FOR DUST AND FUME CONTROL Survey of Labor Law Admin 2 Dec. 1931 to assist the Massachusetts Department of Labor ar- A committee has been appointed control of hazardous Industry in the preparation of rules and regulations for the This effort dusts and fures in the manufacturing establishments of the State toward industrial dust control is a sequel to the investigation of the Massachuse Industrial Disease Commission of 1933-34 and to the findings of the granite dust control project conducted during 1935 and 1936 by the Department's Division of Occupational Hygiene 03117816 ~ B.I. Castleman 07 PTPT PT PT JANTIAONT JANTIAAONT JANTIAONT JANTIAONT JANTIAONT ATV ATV ATV 7MIAI 7MIAI GO " | L'AVP \ af : 4 } ... Fa ... ... AirAir Air rs giene gienegiene Foundation Foundation of Amerion Te 18th 18th = 00 00 : 18th Avenue Avenue Avenue 18th Pa Pa Pittsburgh , Pa 0 960 17 , 1983 Inc. TO RECENT LITERATURE ON HUSTRIAL DISEASES A ES ES ITEMS ITEMS ITEMSITEMS MID EST The CONFTREICE Ind Med I 3 Jan. 1333 will be held in Chicago in Millent Conference Conference on Occupational Disel3sme, d Annual Meeting of the morican in conjunction conjunction with the of industrial Physician and Surgeons For tshceienftirisftic tiamned in the the Abiation its convention will feature ihibits INDUSTRIAL HEALTH TOUCIE FIRST MEETING Ind Med 7 90-2 Feb. 1938 the American Medical Associa- The Inlustrial Health Council has been formed by Its the of eupational discases from the medical standpoint tion for study December 10. Several phases of occups- first meeting was held in Chicagwoito hn reference to the scope of the program and tional hygiene were discused discussed task and a long program before it is realized that the organization has . great it Another nesting was planned for February SILITOSIS FILM Surv Labor Law Admin 8 Jan. 1938 also notice from U.3 Dept. of Labor release motion picture on the harm- The U.S. Department of Labor will shortly to enlist workers em- ful effects of silicosis and theinmetthheodbsattofle prageaviennsttiotnhis industrial disease film then ployers and the general public of the disease The the history and importance The numerator presents and how workers are exposed An animat- describes where vilice dust originates shows how dust particles od section of the upper thearlmifnaolf tahier hsupmaacneslunagnd how breathing is impeded enter and are carried to the safeguards are Scenes in musty plants without proper when lungs are clogged dust control methods are used Prevent- contrasted with others where adequate are describ- including safegurras and adequate State legislation ive measures of the film will be available to interested organizations ed Exhibit copies should be made to the Division of Lasor late in March Requests for booking Staniards U.S. Department of Labor Washington D.C. 187 COMPENSATION FOR SILICOSIS Reviewed in Surv Labor I.L.O. Study of WORKMEN'S is issued as International Law Admin 10 Jan. 1938 The original publication and is obtainable from Office Study - Series F Industrial Hygiene No. 16 Labor Office 734 Jackson Place the American Herdquarters of International Labor Washington D.C. Price not given for silicosis - This study presents three typical systems of ctohmrpoeunghsatsipoencial schemes in Great through special legislation in South Afric of blanket Britain and through special coverage in Germany TheDetaapipllsicaotfioenach plan are to silicosis is considered in an appendix coverage discussed Prevention is stressed in the laws of each country References to Recent Literature - 7 / 2661 2661 2661 2661 2661 2661 IOqUIOAQN IOqUIOAQN IOqUIOAQN IOqUIOAQN IOqUIOAQN IOqUIOIAQON qUIOAQN IOqUIOAQN IOqUIOAQN 9 60 -8MH the cffects of varying air conditions is receiving the greatest amount of at- tention The alkalinity acidity and toxicity of mine atmospheres is being studiod In connection with drilling operations and blasting no basis is found for a general statement fixing permissible amounts of dustiness Ex- tonsive use of water is considered good practice in dealing with the dusting from blasting The wearing of respirators is common as well as the use of water blasts With regard to ventilation the use of auxiliary fans and piping heavier pipe and flexible lincs is grisowcionngsideTrheed Onthtearimoostactscrrieoquusires annual ray examinations and tuberculosis are not allowed to factor in silicotic conditions Tubercular employees work underground A distressing incidence in silicosis is suggested by the the period of exposure noccs- number of new cases during the past 5 years but of the discase has longthened from 10 to 18 years sary for development to counteract tubercu- Special emphasis is laid upon the value of measures losis From abst in Colliery Guardian Jan. 14 1938. p 75 2C4 SOME PHYSICAL ASPECTS OF THE SILICOSIS PROBLEM A.J.Lanza Am Inst Min Mct Engrs Toch Publ No. 856 Nov. 1937 Reprints probably obtainable from Dr. Lanza Motropolitan Insurance Co. New York City This is a brief but pointed review of the present state of silicosis proven- is that authoritics most in touch with the prob- tion One point emphasized there is littlo appreciable disability con- lom in this country believe that and that tubercular infos- mccted with silicosis in the absence of infection tion in silicosis is the crux of the compensation problom Whon silicosis to the front in the U.S. it did so on the crest of a wave of litigation came has been enacted in nover paralleled in modico annals and legislation various the midst of the furor aroused It is greatly to the credit of the bodies that they dealt with the problem as well as they did Tho legislative its chronic nature and the problem difficulty with silicosis is cssentially silicosis has been mot of compensation for previously existing or developing work in various ways by different states and it remains to be soon how they ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS : RE out in silicosis prevention in In the mining industry much has been accomplished have not the absence of specific codes or regulations Safo concentrations bcon absolutely determined but there is evidence that a concentration of cubic foot of highly siliceous dust is don- more than 5 million particles per Anthracite dust containing less than % free silica has been found of less than gerous not to cause disabling silicosis anthracosis in concentrations 50 million particles per cubic foot Somo progress is being made in estab- and moro should be dono in lishing tentativo standards in the mining industry authorities that line by mining companies with the cooperation ofof sgiolviecranmsehnotualld be further The effect of other dusts in modifying the action studied Intelligent handling of the medical control problem especially in dealing with silicotics who aro not disabled is stressed RERE RE RE IN N\ IN IN 205 A STUDY OF DUST CONTROL METHODS IN AN ASBESTOS FABRICATING PLANT Richard T. and J.J.Bloomfield U.S.Pub Health Repts 52 1713-27 Nov. 26 1937 Pago of Documents Washington D.C. for 5 conts cash Obtainable from Supt the dust control methods used in an as- This paper presents a detailed study of bestos fabricating plant and supplomonts an extensive medical and ongincer- of the health of asbestos workors as yet unpublishod The plant ing study and the re- studied has partly completed an extensive dust control program sults are not to be interpreted as representing the maximum possible offic- iency in asbestos dust control but simply indicate actual conditions which this country at this are probably representative of the best practice in with the dust control systems in use time The entire process is described with the various processes in oach department An occupational analysis of B.I. Castleman 09 ~ 766I 766I 766I IOQUIOAONIOQUIOAONI IOQUIOAONI IOQUIOAONI IOQUIOAONI IOQUIOANI ABRAMS ABRAMS ABRAMSABRAMS ABRAMSABRAMS ABRAMS ABRAMSABRAMS ABRAMS ABRAMS :: RE RERE JONJON References to Recent Literature - 8 0 96 employees is presented with a comparison of the atmospheric dust concentra tions associated with controlled and similar uncontrolled processes Im- pinger counts ranged from 0.3 to 11.0 million particles per cubic foot when they were stopped Adequate data have not been presented to justify the de- termination of threshold limits of dustiness that will produce asbestosis in any definite period of time and therefore it is impossible to determine per- missible limits of dustiness on a medical basis Nevertheless any appreci- able decrease in asbestos dust will decrease the incidence and severity of the resulting asbestosis Since total elimination of dust is impracticable dust control methods actual conditions resulting from application of practical can be used as temporary standards by that industry 206 INDUSTRIAL EXHAUST VENTILATION EXHAUST HOOD ENTRY CCEFFICIENTS John L. Alder Heat & Vent 35 47-50 Fob 1938 This continues the author's scries on industrial exhaust ventilation The technipcaapler treatment of rate of air flow in ontrics contraction entry coef- in the December paper is continued Diagrams of hoods ficients ote begun coefficient ontry loss of different types are given with the appropriate entry and nearest simple crifice The methods of increasing flow through hoods are discussed Our latest in- We have had several inquiries regarding the original papers formation is that they will continue for 6 or 7 months more and that the com bined with additions may be published in book form if the publishers papers feel justified as a commercial venture Otherwise the papers are obtainable obtainable and Ventilating published by only by purchasing or subscribing to Heating The Industrial Press 148 Lafayette St. New York City 207 EXHAUST FEQUIREMENTS FOR 72 74 Feb. 1938 Exhaust requirements for wheels are discussed in FOUNDRY DUST CONTROL John M. Kane Foundry 66 31 tumbling mills cleaning apparatus and grinding continuation of the previous paper with tables 208 DUST COLLECTION H.R.A.Davies J. Inst 317-36 1957 A general description of collecting and dust separators Honting Vent Engrs British 5 ~ methods including exhaust systems GOOD HOUSEKEEPING AND SAFETY IN THE FOUNDRY INDUSTRIAL CODES AND OCCUPATIONAL DISEASE LEGISLATION Roprint No. 37-30 American Foundrymen's Association Ill Obtainable at that address price 1.50 222 W. Adams St. Chicago of the A.F.A. Milwaukee May 5 and The papers presented at the Annual Meeting 6 1937 are included in this reprint and are not obtainable separatoly Abstracts of the papers follow 209 FOOT AND LEG PROTECTION IN THE FOUNDRY H. Walter Dundore A.F.A. Reprint No. The the 37-30 9-14 1937 Obtainable as above discusses the need of protection for feet and legs in the foundry npeapeedr of corfort as well as safety and standards that are expected in the manufacture of safety footwear 210 THE USE OF EE AND RESPIRATORY PROTECTION IN THE FOUNDRY INDUSTRY John H. Holzbog A.F.A. Reprint 37-30 15-23 1937 fuOnbdtaamiennatballe paosintasbotvoe be kept in Goggles and respirators are discussed The comfort durability and mind in selecting either equipment are protection cost Goggles are available for all types of work and the offers needs for the par- the most complete ticular operation must be considered The cup type B.I. Castleman 10 1993 1993 1993 1993 19913993 1993 1993 1993 1993 November November November November November November November November November JMB JMB JMB [\ ) )) AB ABAB RE RE RE ON ON -- ---- -- -- ---- -- -- ---- -- HW88-6887926 - . HW88-6887926 Air Hygiene Foundation of America Inc. HW8 -68 7926 4400 Fifth Avenue HW8-687926 Pittsburgh Pa HW88-6887926 HW8-687926 May 1 1938 HW88-6887926 HW88-6887926 HW8-687926 HW88-6887926 REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES A News Items 338 PROGRESS OF STATE MINIMUM LEGISLATION 1937. L. Stitt and F. P. Smith U.S.Monthly U.S.Monthly Lab Rev. 46 194-204 Jan. 1938 Following the Supreme Court decision upholding the constitutionality of the Minimum Wage Act of Washington great expansion in legislation setting standards of minimum wages and maximum hours for women and minors has occurred At the end of 1937 Minimum Wage Acts were in force in 22 states the District of Columbia and Puerto Rico 339 PROTECTION OF WORKERS IN SANDBLASTING Arbeitsschutz 48 1938 German This short account of a meetinogf the sandblasting Society for work protection includes reports on the committee of use of sand the German steel shot grit free working methods and suggestions for the solutions of various problems 340 LABOR STANDARDS New publication The Survey of Labor Law Administration published for some time in mineographed form y the U.S.Department of Labor Division of Labor Standards has been super- seded by Labor Standards in neat printed form It contains sections en- titled Promoting Labor Standards Safety and Health State Labor Law Administra- tion Conferences and Conventions and of General Interest with news items under each of interest alike to employer and employee It is issued monthly at 75 cents per year or 10 cents per copy and can be obtained from the Superintendent of Documents Washington D. C. 341 REGIONAL SAFETY CONFERENCES Safety Eng 75 12 April 1938 Among the state safety conferences in the near future the following are an- nounced Fourth Annual Virginia State Safety Conference at Norfolk June 3-4 June Ninth North Carolina State Industrial Safety 10-11 and the 1938 Western Safety Conference at Conference at Asheville Los Angeles Sept. 12-16 B Papers on Dust Dust Diseases and General Industrial Hygiene 342 DUST SAMPLING WITH THE BUREAU OF MINES MIDGET IMPINGER USING A NEW OPERATED PUMP J. B. Littlefield and H. H. Schrenk U.S.Bur Mines Rept Invest 3387 Mar. 1938 Obtainable from Division of Information U.S.Bureau of Mines Washington D. C. No charge The midget impinger described in our February bulletin abstract 108 can be used with a operated pump described in the present Report The pump con- sists of 4 cylinders with pistons and valves 2 surge tanks and a gauge The outfit is carried in a case with 9 impingers and in operation the closed case is held by straps passing over the operator's shoulder with a rubber tube lead- ing from the case to the impinger A flow of 0.1 cubic foot per minute is ob- tained with a vacuum of 12 inches of water Good agreement was obtained in a number of comparisons of the regular and midget impingers in a wide range of 03117835 1992 1992 1992 1992 1992 1992 November November November November November November November November November November November November November November November ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS K: E KE KE KE KE OON OON ~~ References to Recent Literature -6 MWB8-079 357 PULVERIZING SILICA SAND D.M.Wilhelm Rock Prod 41 47-8 April 1938 This is a brief illustrated description of the plant of the Milwood Sand Co. ut Zanesville Ohio The dust hazard has been practically eliminated by the use of dust seals on all equipment in which dust is generated 328 SOLVING THE DUST PROBLEM F.W.Ortman Jr. Safety Eng 75 Information obtainable from the author Personnel Manager 13-6 april 1938 Koppers Company Baltimore . The author briefly describes the dust control methods used in the grinding milling and boring department of the Koppers Company at Baltimorc The original equipment consisting of a number of installations was replaced by a central dust collection system which has proved satisfactory for 13 years with improvements thatthat the scroor has been increased have been added more recently third by the adoption of an The area improved of type of scroon without increasing the size of the sorcon house As an auxiliary measure a large portable vacuum cleaner with interchangeable nozzles is used for cleaning walls and ceilings 359 THE EARING ON SILICOSIS QUESTIONS INSURANCE TO INDUSTRIAL DISEASES OF THE THIRD Lochtkemper LAW FOR EXTENSION OF ACCIDENT Zbl f Gewerbehy-- 15 9-12 1938 German The auther discusses the present German law which puts all forms of silicosis on a par with accidents and like many of our new State laws paves the way for proper preventive measures including cases of silicosis in One case was that of a man who He also chamotte reports workers on some of his own experiences and in clay tube factories for a year had shoveled grain mixed with sand and another was severe silicosis in a worker employed in a room near a sand- blaster The toms such as essential and author cautions against exaggerating apparently alarming symp- old calcareous foci on the other hand a careful history is special attention should be given to light forms of silicosis contracted in earlier work 360 ASSESTOSIS AND ITS In continuation of PREVENTION the author's T.Windel Arbeitsschutz 26-32 1938 German earlier work abstract 271 May 1937 he first presents more material on asbestosis in the textile are now about 1300 asbestos workers in Germany and about industry There 1000 are considered to be dangerously exposed including weavers Up to March 31 1937 27 cases of asbestosis of which 16 were fatal were reported In 6 months of operation of the new compensation law 10 cases have been idemnified The earliest observed symptoms of the disease are soon after 3 or 4 years work An ray examination of each new employee should be made and another after 3 years and at regular intervals Above all observers must prove whether or not a light case will inevitably progress in spito of removal from exposure Obsoleto and new protective measures are contrasted with illustrations and the necessary technical improvements are described 361 1 PHOTRONFEFLECTOMETER - AN INSTRUMENT FOR THE MEASUREMENT OF TURBID SYSTEMS the R. L. Libby J. Immunol 34 71-73 Jan. 1938 An instrument for measuring turbidity of liquids is described in this which is included on account of the possibility of the application of paper the method to the estimation of the turbidities of impinger dust samples Light from a constant source is condensed by lenses and transmitted in a parallel beam through the liquid under observation and falls on a blackened surface on which a substance causing a current to be generated under the influence of light is placed not in the direct beam but around it The E.M.F. generated is registored by a galvanometer and is a measure of the scattorod 03117840 B.I. Castleman 12 36613661 3661 3661 JOqWOA NJOqWOAN JOqWOAON JOqWOAONJOqWOAON JOqWOAON JOqWOA NJOqWOAON JOqWOAON ABRAAMBRSAMS ABRAMS ABRAMS ABRAMS ABRAMS : RE RE RE RE RERE IN IN IN ININ ~ Air Hygiene Foundation of America 4400 Fifth Avenue Pittsburgh Pa June 14 1938 Inc. 08698 REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES Correction In our notice sent last month regarding Bibliofilm Service under section 2 the cost of photoprints should read 20 cents for the article plus 10 cents per page instead of 5 cents per pago as stated All statements as to comparative cost still hold true A News Items 398 COMPENSATION FOR SILICOSIS Labor Standards 1 4-5 April 1938 Upon recommendation of Industrial Commissioner Elmer F. Andrews the New York Legislature is now considering a bill to put compensation for total disability or death due to silicosis or other dust diseases on the same basis as that for accidental injuries and death The amendment provides for stepping up the compensation gradually over a period of 5 years This recommendation is based upon experience under the present act which indicates clearly that compensation for silicosis is materially less costly than was predicted by the opponents of the act During the first 18 months of operation under the silicosis amendment there was a total of 18 awards with an approximate cost of 12,000 The pending amendment carries a further recommendation of the commissioner liberalizing the period of time allowed for medical treatment Here again experience has shown that the limitation of medical treatment of 3 months in the present statute lost sight of the cases that were complicated by tuberculosis 399 SILICOSIS BILL Labor Standards 1 6 May 1938 conditions A bill to regulate interstate commerce in goods produced under conditions exposing employees been introduced to the hazards of silicosis and related dust diseases has by Congressman O'Connell of Montana 400 COOPERATING TO ENFORCE WORKMEN'S COMPENSATION Labor Standards 1 5 April 1938 Pointing out that 185 claims had been filed with the Ohio Industrial Commission during the last half of 1937 by employees whose employers had failed to comply with the workmen's compensation law Thomas J. Donnelly secretary of the Ohio State Federation of Labor urged workers on a job where three or more were employed to demand proof of their employer that he was paying into the State insurance fund if notice of compliance was not posted Injured workmen are protected in such cases as the employer is liable but considerable delay is sometimes experienced since the claim must be turned over to the attorney general for collection and since it is often necessary to enter suit and secure judgment 401 NORTH CAROLINA'S RAY TRAILER Labor Standards 1 6 April 1938 The North Carolina Department of Health and The Industrial Commission have jointly operated a cruising ray laboratory since last summer to evaluate occupational diseases in the state and to make preemployment examination of persons entering industries that mine or process siliceous minerals A similur cruising laboratory in use in New York has been mentioned in abstract 188. B.I. Castleman 13 ae geSept ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMSABRAMS ABRAMS ABRAMS ABRAMSABRAMS ABRAMS t RERE RE IN IN IN IN 9-89MY by dust exposure per se but rises only after silicosis becomes definitely estab- lished Control of the foundry hazard is believed to be best accomplished by elimination at its source of the dust generated by sandblasting sand chipping 9-89MY sand grinding and shake operations Combined with this employment and periodic examinations are essential so as to prevent tuberculous individuals from carrying on a dusty trade and to discover new infection and reactivation cases as they arise 416 ISOLATION OF THE MINERAL DUST IN THE LUNGS AND SPUTUM N. Sundius and A. Bygden J. Ind Hyg & Toxicol 20 351-9 May 1938 Authors are Swedish and we have no information on reprints The authors discuss various methods for the separation of mineral dust from lung tissue pointing out their disadvantages in that they may alter the composition of the dust They recommend treatment with perhydrol concentrated hydrogen per- oxide as avoiding material decomposition of the original dust Organic acids may be generated luring the decomposition process but their action is weak ex- cept on carbonates which are mostly dissolved The characteristic ingredients of asbestatic lungs the asbestosis bodies however are more resistant and under go no morphological changes but the organic matter contained in their envelopes is chemically attacked and more or less destroyed The method was found useful in separating iron ore dust in sputum in a where the lung dust contains carbonates or practically unchanged state In cases if asbestosis bodies are to be isolated without chemical alteration only a purely mechanical method is applicable For this purpose a procedure has been practised comprising a fine grating of the lung and a subsequent separation of the mineral contents and the asbestosis bodies from the organic matter by centrifuging in heavy liquids among which acetylene tetra- bromide diluted with benzene has proved particularly useful This mixture may also be used to remove carbon from the mineral constituents 417 THE BIOCHEMISTRY OF SILICIC ACID V. THE SOLUTION OF SILICA AND SILICATE DUSTS IN BODY FLUIDS E.J. King and M. McGeorge Biochem J. 32 417-425 Feb. 1938 Reprints probably obtainable from Banting Institute Toronto Ont The solubility of silica in various liquids has been given considerable study with widely varying results by many workers The authors discuss some possible causes of these differences and describe their own method in detail The solu- tions used were blood serum and ascitic fluid The dusts used were quartz flint feldspar asbestos sericite amorphous silica fuller's earth kaolin talc and several borne dusts The results show that free silica dissolves more quickly than silicate minerals indicating the possibility that alkaline earth silicates dissolve slowly in alkaline media while the slightly acidic nature of free silica may favor its solution in alkaline liquids 418 THE BIOCHEMISTRY OF SILICIC ACID VI THE SOLUTION AND EXCRETION OF SILICA E.J. King and M. McGeorge Biochem J. 32 426-433 1938 The authors have attempted to correlate urinary excretion of silica with the quantity administered orally intraperitoneally and intratracheally Cats were used in all experiments The materials used were quartz flint feldspar sericite fuller's earth talc steatite and several other dusts Silica determinations in the urine were made by King and Dolan's method which is described in this paper The authors found that the greatest increase in urinary output of silica followed the administration of free silica especially oral Some of the silicates were unaffected while others wore partly decomposed No conclusion could be drawn from the experiments on inhalation B.I. Castlema1n4 866I 866I 86 I866I Bames 866I866I 866I Ay 4 ae ' HW8-87946 Air Hygiene Foundation of America 4400 Fifth Avenue Pittsburgh Pa September 7 1938 Inc. JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON JOQWOAON ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS RE RE RE RE JON REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES News Items 620 1 : . GENERAL MOTORS CORPORATION MEDICAL CONFERENCE Ind Med 7 469-70 August 1938 The Medical Conference of General Motors Physicians was held at Flint Mich May 19 and 20. Most of the papers presented were published in Industrial Media cine for August Those dealing with air hygiene and general industrial health are abstracted in this bulletin with the statement that they were presented au this od meeting However and with the authors we have as yet had no addresses so that reprints may be requestopportunity of learning whether reprints of any particular paper are available The same applies to the remaining papers presented at the Midwest Conference on Occupational Diseases 621 EXHIBIT OF LEAD HAZARDS Safety Eng 76 51 August 1938 An exhibit showing causes of lead poisoning has recently been released by the U. S. Dept. of Labor The setting is a dusty and corroded lead pot of actual size Lead gains entrance into the body by three principal means namely breathing swallowing and through the skin and each is depicted in a miniature setting viewed through the charging door of the pot The settings revolve on a vertical axis and consist of actual scenes in miniature The exhibit is oper- ated by alternating current and is available for state fairs and large expositions and exhibits Exhibits Office of the U. S. Department of Labor use at safety conferences and can be borrowed through the by groups who are willing to pay freight charges 622 THE W. S. KNUDSEN AWARD Ind Med 7 517 August 1938 It was announced at the meeting of the American Association of Industrial Physicians and Surgeons at Chicago in June that William S. Knudsen President of the General Motors Corporation will make an award to the industrial physician who by the time of the next annual meeting in 1939 shall have been responsible for the most outstanding contribution to industrial medicine A committee has been appointed to decide on the award 623 COURSE ON INDUSTRIAL HYGIENE Ind Med 7 111 August 1938 The Committee on Graduate Education of the Allegheny County Medical Society announces an intensive course for physicians on industrial hygiene given in cocperation with the Department of Industrial Hygiene of the University of Pittsburgh Oct. 24 to 28 inclusive It will consist of lectures and confer- ences on prevention diagnosis and treatment of occupational health hazards methods of medical and engineering control of such problems and present day legal aspect of occupational ical supervision in industry gistration is limited to 45. iseases By way of actual demonstrations of meda tour of representative plants will be made ReFull particulars are obtainable from Department o1 Industrial Hygiene University of Pittsburgh Pittsburgh Pa iy 03117852 . B.I. Castleman 15 era 1992 1992 1992 1992 19 219 2 1992 November November November NovemberNovember ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMBSRAMS J ABRAMS ABRAMS KEKE KE KE KE ON ON WA References to Recent Literature - 6 HW88-880795 HW8-80795 HW8-0795 640 THE APPLICATION OF CONTROL PRINCIPLES TO FOUNDRY OPERATIONS R. R. Second N. E. Regional Foundry Conf Mass Inst Tech April 8 1938 Meigs The paper presents a discussion of the principal sources of dust in each of the several operations of a foundry and outlines practical applications of control in each case The subject is considered under 5 main headings 1 molding 2 coremaking 3 shake 4 sand conditioning and 5 castings cleaning Many practical suggestions are made in regard to care maintenance and methods of operation that will tend to improve existing conditions The author has avoided consideration of the dust concentrations that may be encountered and the pathological effects of the dusts A discussion by Manfred Bowditch and an addi- tional paper by W. F. Terry combine to make the study an excellent and compre- hensive treatment of the elements of dust control in foundries 641 RECENT DUST EXHAUST APPARATUS F. Prockat Staub 6 249-87 1937 German First is a description with examples and illustrations of the most important points of exhaust apparatus and the various kinds of dust removal gravity sys- tems removal by utilizing the mass inertia by centrifugal force by filters etc. The author then describes exhaust hoods partly in agreement with those expressed in Drinker and Hatch's book partly also on the basis of some of his own investigations of piping installations 642 WORK OF THE DUST CONTROL OFFICE IN COOPERATION WITH GERMAN INDUSTRIAL COMPANIES A. Laemmert Staub 7 365-71 1937 German insurance carriers because of silicosis compensation have become more interested in dust control To furnish lacking data and knowledge of the physics and technic of dusts a central office was up to do what could not be done individually The central office set up a laboratory began consulting individual inspectors and industries and investigating all problems bearing on dust control Most of the interested companies joined 643 ASBESTOS S. R. Gloyne and E. R. A. Merewether Occupation and Health Supplement 15 pp International Labor Office Geneva 1938 Information obtainable from International Labor Office 734 Jackson Place Washington D. C. This is one of several brochures recently issued as a supplement to the volume Encyclopedia on Occupation and Health It is a treatise on asbestos including physical properties chemical composition uses extraction manufacturing process and especially risks to health The discussion of asbestosis includes its essential features diagnosis pathological features distinction from tuberculosis preventive measures and compensation The references to difficulties in diagnosis and to formation of asbestosis bodies illustrated by 41 drawings are of special interest The most important single clinical sign of asbestosis is that of diffuse bilateral impairment of the percussion note slight in degree and associated with a slight sense of resistance The other important feature is the radiographic examination of the chest The distinguishing features between asbestosis and silicosis in ray pictures are listed It is emphasized that neither method alone is conclusive but that asbestosis can be diagnosed with certainty with the aid of both even if symptoms and disablement are absent In difficult cases where extensive tuberculosis is present careful investigation of the subjects exposure to asbestos dust will enable the correct decision to be reached The preventive measures are based largely on the principles of the British Code of Regulations The views expressed are authoritative and very instructive 644 PREVENTION OF ASBESTOSIS IN INDUSTRY F. Prockat Staub 5 133-62 1937 The paper includes a description of asbestos and of its various forms its uses and methods of preparation for industrial purposes It is shown by many illus- trations how dust can be decreased in certain processes by installation of ex- haust systems and practical planning 03117857 B.I. Castleman 16 866I 866I 866I 866866II 866I 866I JOQUIOAN JOQUIOA NJOQUIOAON JOQUIOAONJOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON ABRAMB ABRAMB ABRAMB ABRAMB ABRAMB ABRAMB : RE RRE E JON Air Hygiene Foundation of America Inc. 4400 Fifth Avenue 80796 Pittsburgh Pa October 13 1938 ' REFERENCES TO RECENT LIIERATURE ON INDUSTRIAL DISEASES News Items INDUSTRIAL AMERICAN PUBLIC HEALTH ASSOCIATION Ind Med 7 589 Peptember 1938 The Industrial Hygiene Section meeting of the 67th annual convention of the American Public Health Association to be held at Kansas City October 25-28 1938 should contain material of interest to all problems The addresses as they are published who have industrial medical will be abstracted in this bulletin 701 NATIONAL SAFETY CONGRESS Ind Med 7 589 September 1938 The National Safety Congress and Exposition will hold its annual meeting October 11-14 at the Stevens Hotel Chicago There will be sessions on Dusts Gases and Vapors Industrial Nursing Occupational Disease and Health in Industry Any articles of interest will be noted and abstracted in Funes Service thi bulletin z. NEW BOOKS OCCUPATION AND SUPPLEMENT Jackson International Labor Office 734 Jackson < Place Washington C. This supplement which will consist of 500 pages chased for 5.00 The first installment to this when last completed supplement can be pur- comprises 86 pages and includes five brochures on Allergy and Occupation Asbestos " Beryllium Pneumoconiosis and Silicosis -- TOXICITY OF INDUSTRIAL ORGANIC SOLVENTS A compilation by Ethel Browning of the numerous solvents used in industry It discusses properties uses and toxicity and should be a valuable reference to those interested The book is a British Publication The U. 6. address is The British Library of Information 270 Madison Ave. New York City Price 7s 6d Industrial P Papers on Dust Dust Diseases and General Hyziene 703 PNEUMOCONIOSIS PULMONARY DISEASE DUE TO DUST L. Teleky Occupation and Health Supplement Internat Labor Office Geneva January 1938 One of the supplements mentioned in Nows section of this Bulletin This is one of the best reviews and one of the most readable that has yet been written on the subject Dr. Telety has placed the dusts into 8 classes accord- to actions us follows briefly irritants coniotic action over long per- ing chemical action forming lesions quarts chemical action with in- iods cancerogenic action allergic action infectious action flammatory processes and physiology of and toxic action In the first half of the paper mechanics dust inhalation are considered together with concentrations found and the path- of mixtures The second half dis- ccluosgsiecsaltheandeffreocetnstgeonfogbrraepahtihcianlg vsairginciufsicadnucsets including grain dusts dusts like tte B.I. Castleman 17 is g hagas SEBI SEBI SEBSEIBI JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON 3 3 UMCE UMCE UMCE UMCE \ ; if f ly, A my| e t+) RX RX ON References to Recent Literature- 2 a 704 Thomas slag and various minerals Bibliography is brief and is limited to known references Pera PATHOLOGY OF THE SILICOTIC NODULE Joseph Walsh Am Rev. Tuberc 35 363-71 ere September 1938 White Haven Sanatorium White Haven Pa The author presents the results of 20 years of observation of anthracosilicotic lungs with several photomicrographosf affected lymph nodules In his summary he states that anthracosilicotic dust within the tissues of the lung is always found in cells until after necrosis sets in These cells are carriol in lymph channels to intrapulmonary and hilar les The pulmonary anthracosilicotic module begins by thickening of the interstitial tissue around lymphatics the development of fibrous tissue in alveclar walls and destruction of the elastica which allows the alveoli to collapse The typical single nodule is smaller than a millet seed and is made up principally of collapsed and coalesced alveolar walls Later occur hyalinization and necrosis beginning in the interior A large nodule is always conglomerate and is made up of the coalescence of innumerable small ones The silicotic nodule and its points of difference from the pulmonary nodule are described 705 SILICOSIS AND SIMILAR DUST DISEASES MEDICAL ASPECTS AND CONTROL R.R. Sayers and R. R. Jones U.S.Publ Health Repts 53 1453-72 August 19 1938 Ob- tainable from Supt of Documents Washington D.C. for 5 cents cash This paper originally presented at the National Silicosis Conference in 1936 is an excellent review of the subject with especial attention to occupational exposure factors influencing the action of silica dust particles the necessity of occupational history and prevention of silicosis Asbestosis and anthracosilicosis are considered briefly 706 RECOVERY METABOLISM OF SILICOTICS A. Bohme Arch f Gewerbepath u Gower- behyg 8 601-10 1938 German Increased oxygen consumption accompanies all work partly during work partly after it oxygen debt In cardiac insufficiency and emphysema oxygen consumption is more delayed in the recovery period the oxygen debt is greater than normal In healthy persons consumption is highest after 3 or at most 6 minutes after stopping heavy work In comparing normal persons with silicotics with 70-80 disability the latter showed a marked and prolonged rise in respiration rate increased minute volume and oxygen consumption during the recovery time and also at the end of the 10 minute observation period In silicotics with less than 70 sability the differences were less marked or barely detectable The method is not applicable for adjudging compensation however because of other excitement lack of precision and intentional emphasis of difficulties 707 THE INFLUENCE OF SILICA ON THE NATURAL AND ACQUIRED RESISTANCE TO THE TUBERCLE BACILLUS Arthur J. Vorwald and Anthony B. Delahant Am Rev. Tuberc 38 347-62 September 1938 Reprints probably obtainable from The Saranac Labor- atory Saranac Lake N. Y. The authors investigated the effect of silica on resistance of animals to the . tubercle bacillus Their experiments showed that silica depresses the native resistance of the guinea pig to attenuated tubercle bacilli and of the white rat to virulent types of these microorganisms Silica also inhibits the development of acquired resistance in guinea pigs when the irritant is confined to the tissue in which the immune bodies are being produced This adverse influence is specific for silica and is proportional to the concentration of the irritating substance Dusts low in silica and nonsiliceous dusts have no such effect The authors suggest as a possible explanation the alteration of 03117873 B.I. Castleman 18 0007973 References to Recent Literature - 5 0 07973 1992 . 1992 - 1992 o 1992 : 1992 1992 1992 November November November November 712 0 07973 CHEMICAL DETERMINATION OF QUARTZ FREE SILICA IN DUSTS E. Kaplan and W. T. Fales Ind & Eng Chem Anal Ed 10 338 July 5 1938 - The writers propose the application of the compound interest law to determine HWBB the rate of loss of silica in the Knopf hydrofluosilicic acid and the Line HWBB HWBB and Aradine fluoboric acid methods for the determination of free silica By applying Knopf's factor of 0.1 loss per day and Line and Aradine's factor of 0.34 loss per day to the mathematical formula derived from the compound inter- est law the writers calculate the total free silica loss for any number of days The chief difficulty with this procedure is that the factor of rate of loss is not constant but varies widely with different particle sizes as has been demon- strated by Moke nd Harris November November November NovembeNrovember SN. November November J \ae l ht) ABRAMABRAM ABRAM ABRAM ABRAM ABRAM 713 CLINICAL CONSIDERATIONS ON THE QUESTION OF INDUSTRIAL CANCER OF ASBESTOS WORKERS F. Hornig Ztschr f Krebsforsch 47 281-7 1938 German ^ 35 year old woman who worked in an asbestos factory from 1919 to 1928 fell ill of asbestosis In 1937 a sharply defined shadow was seen roentgenographically in the cinoma upper left and in the lobe This decision on shadow was considered by the author the case a causal relation between to be a carthe presence of asbestosis and the development of carcinoma was accepted The correct diag- nosis of carcinoma was confirmed on atuopsy THE INDUSTRIAL CANCER OF WORKERS IN ASBESTOS M. Nordmann Ztschr Krebsforch 47 288-302 1938 of which 5 were The author describes 6 cases of asbestosis with lung carcinoma carcinoma with hornification and the other an adenocarcinoma Most of squamous the cases were younger than the average case of lung cancer The exposure to asbestos had lasted 7 to 21 years and had begun 15 to 20 years before observa- tion of the carcinoma with the exception of an elderly woman who had only an exposure of 19 months 17 years before observation and who had a high degree of asbestosis What property of asbestos is responsible for the cancer devel- oping on the groundwork of asbestosis is not yet known but there may be in asbestos called carcinogenic substances 715 TISTS OF A BARRIER USING ROCK DUST IN PAPER BAGS H. P. Greenwald and H. C. Howarth U.S. Bur Mines Rept Investigations No. 3411 16 pp August 1938 Obtainable free from Division of Information U.S. Bureau of Mines Washington ABRAM : KEKE C. A recently developed method of explosion barrier is tested by the Bureau The method consists in dusting with limestone placed in paper bags which are mounted on posts in trackless entries The bags are mounted in such a way as to be automatically opened by the shock waves in advance of an explosion and complete description is given of the technique used The ten tests made were successful in every case but one They are described as cheaper than those methods recommended in their Bulletin No. 353 but are not recommended for entries provided with track The limestone used is especially treated to increase resistance to moisture IN ININ IN IN 716 SOME OBSERVATIONS ON COAL FANS AND MINE VENTILATION D. Harrington and E. H. Denny U.S. Bur Mines Inf Circ No. 7032 20 pp August 1938 Obtainable free from Division of Information U.S. Bureau of Mines Washington D. C. Ventilation is one of the most important single operations in mining for pretecting lives and in promoting efficiency of operation During 1932 and 1935 inclusive the explosion record in mines was very good but during 1937 and 1938 experience has been bad and it is suggested that the cause may be due 03117876 B.I. Castleman 19 C66T C66T C66T C66T C6 TC66T C66T CC66T66T JOQUOAON JOQUOAON JOQUOAON JOQUOAONJOQUOAON JOQUOAON JOQUOAON JOQUOAN JOQUOAON wal . ABRAM ABRAM ABRAM ABRAM ABRAM ABRAM XXY Y NO A705 * Air Hygiene Foundation ? America Inc. 4400 Fifth Avenue HURA Pittsburgh Pa November 14 1938 REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES x , A News Items { q 794 consideration FALL MEMBERSHIP MEETING OF AIR HYGIENE FOUNDATION held annual fall membership meeting of Air Hygiene Foundation will be representati The 17. More than 200 Mellon Institute Pittsburgh on November will hear progress report industrial concerns in allFoupnadrtastioofn tihse scuopupnotrrtying at The Saranac N.Y. the researches which the Harvard School of Public Health University of Pennsylvania Laboratory These studies seek how measures for promoting . Mellon Institute Besides these and the % ae! health and preventing occupational diseases will hear disc oni medical engineering and legal committees the meetinwgell as of of the broad social aspects of industrial health as consideration the industrial relations and public relations side of the subject The program includes ee . is Social Aspects of Industrial Health - Dr. Willard E. Hotchkiss Carnegi aa Drinker Institute of TechnologTyoward Further Protection of Industrial Health Drinker oEfngPirneeveernitnigvePrEonggriensesering Committee Including Plans for 1959. Philip ee ee CShtaaitremaCnodes for Control of Industrial Health T.F. Hatch New York State Oe Division of Industrial Hygiene Industrial Health Theodore . Mxters, Legal Trends of Interest RespectDiinsgeases Commission a Chairman MarylandTOocwcaurpdatFiuorntahler Protection of Industrial Health Medical Progress Medical Committee Including Plans for 1939. Dr. A.J. Lansa Chairman Changes among Silica Some Practical Considerations Concerning Lung " Dr. E.P. Pendergrass University oMfixPeendnsyDluvsatnsiaanHdosPpriottaelctor Dusts Report on Further Researches onThe Saranac Laboratory Dr. Leroy U. Gardner Director Work Dr. S.Raid Comparison of Film and Paper in Roentgenographic The Moore School Ray Laboratory of Industrial Health Industrial and Public Relations Aspects Executive Secretary National Industrial Sand Association VA eet we me a ee .. B.I. Castleman 20 8661 8661 861 86 186 1 8661 JOQUIOAN ; JOQUIOAON J JOQUIOAONJOQUIOAON JOQUIOAON JOQUIOAON ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMSABRAMS KE KEKE References to Recent Literature - 5 803 TUBERCULOSIS OF INTESTINES IN TUBERCULOUS ANTHRACOSILICOSIS R. Charr and A.C. Cohen Am J. Med Sci 196 83-7 July 1938 LU U Complete autopsies were made on 42 cases of anthracosilicosis plus pulmonary tuberculosis and on 75 cases of pulmonary tuberculosis without anthracosilicosis Of the former 19 had intestinal tuberculosis and 51 of the latter The ... incidence of intestinal tuberculosis in each group apparently higher in the age groups below 30 804 A STUDY OF ASBESTOSIS IN THE ASBESTOS TEXTILE INDUSTRY W.C. Dreessen J.M. DallaValle T.I. Edwards J.W.Miller and R.R. Sayers Pub Health Bulletin No. 241 126 pages August 1938 Obtainable for 20 cents cash from Superin- tendent of Documents Washington D. C. This is a report of a complete survey of the asbestos textile industry in North Carolina made in conjunction with the State Health Department The report is comprehensive in its coverage of the subject and includes a good annotated bibliography of 63 references to asbestosis It describes the industry the processes in the manufacture numbers employed in each process dust counts made at various locations and incidences of asbestosis among the various employ- ees, The incidence of the disease among the workers increased rapidly with in- creased dust exposure and it was found that fifth of the workers with an exposure of 50 to 99 million particle and half the workers having an ex- posure of over 100 million particle had asbestosis The threshold limit cubic foot and for exposure has been set tentatively at 5 million particles per it was found possible by methods already at hand to obtain this concentration in all processes The medical part of the report is complete with physical ex- amination data laboratory findings ray pictures and case histories 805 1938 INVESTIGATION ON CONTROLLING PNEUMONIA BY IMMUNIZATION OF WORKERS IN THOMAS M. Gundel & E. Homann Dtsche med Wohnschr 64 917-21 German German In an earlier paper our Abstract No. 8 1937 the authors had shown that pneumonia in Thomas slag mill workers was caused exclusively by pneumococci types I II III but chiefly by type II Since that time they have begun immunization in a plant where pneumonia had occurred A Behring serum was used on 79 men in the mill the remaining 49 refused it No serious results followed its use The serum was given in July and since then no pneumonia has appeared in the plant Though it has not proved itself conclusively in February 1938 pneumococci of the above types could be found but very seldom and less frequently than in another mill The authors conclude that the results call for further work with the serum 806 MEDICAL AND LEGAL ASPECTS OF TUBERCULOSIS AS AN OCCUPATIONAL DISEASE AND AS AN ACCIDENTAL INJURY Mary G. Mack National Tuberculosis Assoc Social Research Series No. 6 June 1938 Obtainable from the Association 50 West 50th Street New York for 1.00 postpaid Generally speaking tuberculosis is not recognized as an occupational disease but there is a growing experience in the courts with reference to suits and claims for compensation because of tuberculosis contracted in ordinary course of industrial employment The purpose of this bulletin is not to be an exhaustive summary of all cases but rather to present representative decisions with discussions of various problems involved Included is a review of medical opinions on the status of tuberculosis as an occupational disease and as an accidental injury abstracts of court decisions on each of the two latter phases and a digest of the workmen's compensation laws by states as they effect occu- pational diseases 03117899 B.I. Castleman 21 Air Hygiene Foundation Air Hygiene Foundation Hygiene Hygiene Pittsburgh Pittsburgh Avenue 09758 ON INDUSTRIAL DISEASES REFERENCES REFERENCES RECENT LITERATURE (a) A News HELD NOVEMBER 17, 19ZE. MEETING OF HIGIENE FOUNDATION NOVEMBER 1938 1938 annual 862 862 ANNUAL MEETING executives from FOUNDATION HELD attended 1938 on More than executives Foundation industrial industrial concerns Institute Institute Pittsburgh annual Mom fall fall meeting of Hygiene Foundation held at Mellon Pitsburgh Pittsburgh on November November 17 1938. executives four corners Institute advances executives protection reports latest advances reports health dozen feder- representatives al al and agencies agencies recent engineering representatives representatives developments developments developments industrial industrial state covered health hazards and medical social economic economic trends state governing included findings from legal researches conducted under from Air program at University researches improving improving grante methods methods Hygiene Foundation medical examinations of Pennsylvania improving industrial N.Y. methods Laboratory scale of mixed dusts industrial in ing diseases Laboratory studies University for two graduate protector a engineering engineering Harvard as ing Other studies broad benefits for management Labor ity resulting stressed the effort by employers labor industry from this collective b Ith in will be published , with texts of the papers near future the Foundation and copies sent to members NATIONAL future future the Foundation Labor Labor Dive of Standards CONFERENCE REPORTS PUBLISHED U.S. Dept. 1938 865 Labor These final reports No. 21 Parts 1,2,3,4 committees appointed April April follow follow 1956 follow 1, Conference February the four that year They are Bulletin Part ing the Conference Committee Prevention of through Bulletin Control Report Report Committee the Committee Prevention of Silicosis Silicosis Silicosis through Part , Report , Report the Committee Prevention Legal Insurance Engineering Phases Control Control Part 4 Report of the Committee Committee on Economic Administrative Administrative Phases15 and from from Superintendent Superintendent Regulatory Washington Phases . They are obtainable obtainable Documents Documents Superintendent cents cents from ~ Proctereach receive 364 significantly SERVICE NATIONAL EMPLOYEE EMPLOYEE AS COMPARED U. S. PUBLIC PUBLIC HEALTH Foundation STaTISTICS notice of the the Foundation Ivorydale Ohio which which bulletin bulletin health their the employces employces Company Company average industrial industrial compares health compiled the the Public Health general tabulations tabulations industrial workers compiled groups groups U.S. respiratory Health Service The miscellaneous divided three respiratory and diseases digestive diseases diseases incidence miscellaneous diseases Figures & for separated incidence average case among Procter Procter Gamble employees lower than all industry The The Foundation Foundation Foundation would glad and call attention attention similar data from from other companies be to receive and to attention attention Foundation companies be glad other companics. woe fe Castleman 22 22 86618661 8661 8661 86618661 JOqUIJOAOQNqUIOAQN JOqUIOAQN JOqUIOAQN JOqUIOAQN JOqUIOAQN JOqUIOAQN JOqUIOAQNJOqUIOAQN JOqUIOAQN JOqUIOAQN ABRAMS ABRAMS ABRAMS ABRAMS ABRAMSABRAMS ABRAMS ABRAMS ABRAMS ABRAMSABRAMS ABRAMS ABRAMS RRE E RERE ININ IN 8089759 to Recent Literature ~ 2 8089759 References AWB 865 INDUSTRIAL HYGIENE AVAILABLE FOR EMPLOYMENT from Massachusetts GRADUATE IN in Industrial Hygiene A recent graduate with a Master's Degree after the first of the for employment Technology will be available he is also a grad- Institute of studies in Industrial Hygiene student Besides his extensive recommended both personally and as a year He is well uate Sanitary Enwgiilnleebre furnished to anyone having a possibility of an opening Further details B 866 Papers on Dust Dust Diseases and General Industrial Hygiene BY THE BUREAU OF MINES H. H. DEVICES APPROVED July 1958 Obtainable LIST OF RESPIRATORY PROTECTIVE Circ No. 7030 Information Schrenk U.S. 14 of Mines from Div of InformaItnformation Iinforomatnion Washington D. C. No. 735 we included a list of res- In our Bulletin in November 1938 Abstract No. 2 Part 2 was issued This approved since our Engineering Bulletin and its First Supplement The piratoirnscluded the above Bureau of Mines Circular to that Circular issued list listed in a Second Supplement following respirators are November 12 1938 SCHEDULE 19A -Type C -- 2 SCHEDULE 21 -- Lead Dust 4 SUPPLIED RESPIRATORS Air Line Respirators Models GA Willson Air Line Respirator No. 1912 issued to Willson Products MECHANICAL FILTER RESPIRATORS GB and GC Approval Inc. October 7 1938 ; -- No. 2125 issued to No. 750L Approval Willson Respirator October 19 1938 Willson Products Inc. Type A and Lend Dust No. 46 Dupor Respirator Cover October 3 1938 Approval No. 2124 issued to H.S. 867 868 J. Am Med Assoc 111 1925-36 ETIOLOGY OF PNEUMOCONIOSIS L.U. Gardner November 19 1938 Industrial Health American Medical for the Council on of silicosis and the pneu- IAnssaonciaarttiiocnle tphreepaaurtehdor covers the complete etiology of silicosis and the work moconioses He first reviews the historical aspects theories still dorin- Kettle and Purdy in 1922 whose with duste of Collis in 1915 and Gye different methods of experimenting ate modern concepts He describes of dilute suspensions of par- determine toxic effects Intravenous injections which similate the action of to in remote parts of the body have given tests is considered free ticles of these types of dusts and mixtures dusts in the lungs The action carbide nonsiliceous minerals silica silicate asbostos silicon The inhibitory action of certain minerals of free silica with other minerals is being given more attention in mixed with silica is discussed and the subject another hypothesis not yet recent experiments The solubility of silica is of the subject several methods used in this phase respiratory determined satisfactorily and action of upper are described Factors of particle size protective The article is an authori- discussed tract and individual susceptibility aarned modern theories regarding their patholog tative review of the pneumoconioses DUST AND PULMONARY DISEASE A.J. Vorwald N.Y. State Jour Med 38 1103-9 August 15 1938 the material which the author presents This is an excellent general article in and exposure are discussed simply and logically Atmospheric concentrations history is exposure of an exhaustive briefly and the great importancedusts are considered Asbestosis and silicosis pointed out Inert and active B.I. Castlema2n3 26612661 2661 2661 2661 JOQUIOAON JOQUIOA NJOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAN tJOQUIOAON AMBAMB AMB | AB AB AB ABAB AB AB RRE E RE RRE E 4 IN IN References to Recent Literature - 3 g69 8 09760 is made of the recognized but still mysterious are described simply Mention an excellent introduction effect of other dusts plus silicatheThleitpearpaetrureproovnidseislicosis to persons who have not followed SILICOSIS AND SIMILAR DUST DISEASES MEDICAL ASPECTS AND CONTROL 1453-71 August 19 1938 R.R. Sayers and R.R. Jones Pub Health Repts 53 to express different While different definitions of silicosis may be expected silica or quartz The in common the cause is views all have one thing of quartz or other forms of silica opal flint chalcedony is surprising- that % of all industrial workers use ly prevalent in industry and it was estimated were employed where the silica hazard required con- from in one manufacturing center at least to some degree vary sideration Estimates as to numbers exposed of dusts which pro- characteristics 500,000 to 1,200,000 The authors review the in particle or particle duce silicosis the methods of estimating exposures Most silicates are not and characteristics of individual susceptibility A notable exception years some fibrosis of the lungs dangerous dusts but may cause which causes scrious pulmonary is asbestos an anhydrous magnesium silicate with examples of its incidence changes Anthracosilicosis is discussed briefly from a medical standpoint the among coal miners In the prevention of silicosis in which evidences of medical examination most important feature is a periodic tuberculosis should be particularly noted 870 no SILICOSIS A.R. Riddell C.M. Jephcott A STUDY OF A FATAL CASE OF INCOMPLICATED 566-75 November 1938 and D.A. Irwin J. Ind Hyg & Toxoifcoslil2ic0osis which was characterized by ex- tubercu- The authors describe a oufnisqiuleicacaasned which was uncomplicated by pulmonary posure to a pure form sandblast for 6 years exper- losis The man operated an improperly eqtuhieppcehdest causing him to seek medical which in developed iencing at the end of 5 years pas aindsyspnea cough expectoration is advice Later other symptoms to death A complete description necessitated hospitalization 4 months prior them being the fact that given of the clinical picture most important among tuberculosis though bacill had indicated a complicating not excessive and fibrosis was radiological pictures be found in the sputum Pathologically the noted and the could rather than nodular At autopsy no tuberculosis was diagnosis was linear the necessity of a guarded clinical opinion regarding case emphasizes of complicating tuberculosis 871 NUTRITIONAL CONDITION OF SILICOTICS G. Schlomka K Naumann and A. Bechstein nutritional Klin Wchnschr 17 999-1003 1938 German and miners and miners with The authors studied the diets of healthy rock cutters index in healthy stone silicosis of varying degrees The average with silicosis II +2.51 for cutters was +1.69 for 33 years and in minors careful statistical examinations and evaluation that this 42 years On the basis of very tend to a real excess weight the authors conclude that silicotics of silicosis and that silicosis to excess fat increases with the degree view that tendency one There is an opposing is not an organic diseasdeuebutto a chagnengeerailn the mode of living resulting from the the weight increase is 872 disease and invalidism AND THE INHIBITORY ACTION OF ADDED DUSTS THE SOLUBILITY OF SILICEOUS DUSTS 556-65 November 1958 A.G.R. Whitehouse J. Ind Hyg & Toxicol 20 of the most important fac- The solubility of the various kinds of dusts is one In this study the causes of silicosis tors in the many theories regarding dusts in a 1 per cent solution solubility of different in lung tissue author has examined the alkaline liquid to similate the slightly of sodium carbonate B.I. Castlema2n4 1992 1992 1992 1992 1992 1992 1992 1992 November November November November November November November November November November November November November November November November ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS _. == Zz QT QT QT - NO NO NO References to Recent Literature - 4 873 is admitted that the sodium carbonate solution is much the more although it The dusts used consisted of small particles 0 to active solvent of the two Of the dusts examined 6 microns separated where necessarythbey oethleurtsriiantioornder of their solubility were 0 9761 flint was by far the most soluble no free silica gran- whinstone 64 per cent total silica quartz bull quartz sanistone coal measure sanistone 49 per cent free silica sericite and stone dust The addition of shale dusts to ite e type of shale with 7 per cent free silica while limestone dusts quartz decreased its srl bility in the sodium carbonate solubility of quartz 79 had little or no effect The greatest reduction in of silica depend- Coul dust also decreased the solubility was caused by gypsum the values for reduction ranging from 4 to 71 ing on the type and particle size per cent PARTICLES IN SPUTUM AND ASH OF THE LUNGS OF SILICOTICS THE NATURE OF MINERAL 535-55 November 1938 H.E. Burke and P.F. Kerr J. Ind Hyg & Todxeitceorlmin2i0ng the nature of the mineral Comparatively little work has been done in the authors describe a particles in the sputum of silicotics In this paper of silicotics and of the series of microscopic investigations of the sputum with no silica erpo- lung ash of silicotics tuberculous patients and controls of the nature sure Although they were able to find retfecrhanicc taivanilgablpeartiitcliess difficult to of quartz in the sputum with the present of ash of the lungs of 4 tuberculous positively identify the minerals Samples isotropic aggregates of a silicotic subjects were found to contain large or quartz Samples of calcareous phosphatic nature but no sericite feldspar and occasionally feldspar No the ash of silicotics were found to contain quartz sericite was found in the ash of any of the proved silicotic cases 874 MICROCHEMICAL INVESTIGATIONS ON SILICEOUS DUSTS J.W. Matthews Analyst 63 467-77 July 1938 of the order of 50 mg is chemical analysis of dust a sample of the examination For a complbeutte for an investigation of the solubility and an required of at least a few grams are needed Two types of apparatus are of a volatile solid and extract samples used for collecting samples a filter with a filter of loss at 100 and a labyrinth For silica estimations after determination with three to four times its weight of so- loss on ignition the dust is fused in 1 ml of water and neutralized by expo- dium carbonate The melt is taken up is made insoluble by evaporation sure to hydrochloric acid vapor The silica followed each time by drying at 105 The three times with hydrochloric acid acid and filter- water with about 0.25 ml of hydrochloric residue is taken up in for the iron and aluminum determinations The treatment ed through a King filter and the silica volatilized by insoluble matter is ignited and weighed di- acid and evaporation in the presence of water containing with hydrofluoric lute sulfuric acid The crucible is finally ignited for 2 minutes and weighed King's colorimetric method For the determination of silica in aqueous extracts with a standard picric acid is used comparing yellow ammonium molybdate amounts com- solution Iron is never present in the samples tested in large quinoline method has been used satisfactor- pared with aluminum and the hydrdoextyermined as the oxalate and ammonium phosphate ily Calcium and magnesium arc sodium and potassium in a separate sample a sin- respectively For determining is very satisfactory Lime reduces the solu- the solubilit plified Berzelius procedure reduction in of silica and an example is given of a striking bility of asbestos in the presence of lime or of cement B.I. Castleman 25