Document 5JLr35JgY2obXRmwqo6g8vv4

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.J. Castleman 01 2412 PICKWICK ROAD BALTIMORE MD 21207-6631 tel 410-448-2648 bcastle@mail.bcbcastlpe@mail.lbcpl.lib..md.uslbciastle@bmail.b.cpl.limb.md.uds .bcaustle@mail.bscpl.lib.md.us fax 410-448-2368 19 21992 1992 berber ber uray DAONI DAONI DAONI DAONI ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMSABRAMS ABRAMS ABRAMS ABRAMS KEKE KE KE KE JON cate s 260-8AoT Air Hygiene Foundation of Amerion Inc. 4400 Fifth Ave. Pittsburgh Pa 260-8A t December 10 1937 . i ' $ REFERENCES TO RECENT LITEPATURE ON INDUSTRIAL DISEASES A News Items 589 MICHIGAN FOSTU 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 6 566-71 Ost Rapid developments in industrial hygiene throughout the country have olg demonstrated that the weakest link in plans for coping with occupationa ease plant sanitation and occupational disease legislation is th adequate training of physicians and engineers in those subjesucbjecttsag sag subjectsag instruction has been developed by the Bureau of Industrial Industrial Hy Department of Health of Detroit Didactic and laboratory worked students but grees will be given by the schools sending their associated laboratory practice for a unit of 3 months or longed will be provided by the Bureau McCord will furnish details to The above Bureau directed by% interested persons or institutio 592 384 1987 FIGHTING DUST HAZARD BY GENERAL ELECTRIC Ceram Age 29 Nov. Satay The General Electric Co. is now engaged in an extensive program for elim dust in its porcelain plant Approximately 35,000 has bTeheeneqsupiepnmtenotn a ins tt and some old equipment has been discarded or replaced very . water type and has proved highly successful Dust counts show rtij souraging results and are still being made with the receptacle dire - - the breathing zone of the workmen 593 destes destes entitled EXHIBIT AT 1937 STATE FAIR Ind Bull Sept. 1937 The New York State Department of Labor sponsored an industrial at the State Fair in September built around the central theme hygiene unhibit of a proje 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 imber- 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 a alals a shasgiaThe exhibit is also being shown at schools conventions 1920-334 EL, B.I. Castleman 02 ~ 366I 366I 366I 366I 366I 366I 366I JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON j JOQUIOAON V JOQUIOAON JOQUIOAON JOQUIOAON JOQUIOAON oan et ALAM ALAM ALAM ALAM ALAM ALAM ALAM aN KE 4 JON JON JON JON References on Recent Literature - 6 HW88-8887858 611 LAN OF SIZE DISTRIBUTION AND STATISTICAL DESCRIPTION OF PARTICULATE MATERIALS HW8-887858 P.S.Roller J. Franklin Inst 223 609-33 1937 HW8-887858 of This is scribed a mathematical treatment in our abstrect No. 362. A the law results of size obtained with air separator de- HW8 -8 87858 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 HW88-8887858 HW88-8887858 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 NASAL 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 employed The apparatus The must Zeiss Pilfrich photometer and a special be calibrated for each kind of dust stage are 613 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 severe 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 IN CASES OF FNEUMOCONIOSIS SEVERE ASBESTO- PATHOLOGICAL AND ANATOMICAL QUESTIONS ; } SIS W. di Biasi Med Welt 11 1234-7 1937 German The author gives a clear discussion of pathological and anatomical changes in the no real development of pneumoconiosis silicosis and emphasizes the fact that have been seen without exposure to quartz In hundreds pneumoconiotic changes connective tissue growth in of cases in the fuhr 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 615 DUST dius CONTENT OF AN ASEESTOSIS LUNG AID THE NATURE OF ASBESTOSIS BODIES N. and A. Bygden Arch.f. Gewerbepathol u Gewerbehyg 8 8 26-70 1937 Sun- German ) the asbestos in the lung This long per reports careful chemical experiments on and asbestosis bodies Although much more serpentine asbestos than hornblende is the latter was found exclusively in the lungs examined The used in industry asbestosis body sheaths are formed 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 G0A7879 1992 1992 1992 G0A789 19919922 Air Hygiene Foundation of America 4400 Fifth Avenue Pittsburgh Fa January 10 1938 Inc. f - ~ 1992 1992 REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES NoveNmboervember November NovemberNovember November , A News Items - GOOD HOUSEKEEPING AD DISEASE LEGISLATION SAFETY IN FOUNDRIES AND INDUSTRIAL CODES AND OCCUPATIONAL American Reprint No. 37-30 ~~ Foundrymen's Assoc Inc. | 222W Inc. Cr presnted ~ 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 Novemb r silicosis good housekeeping in the foundry industrial codes and their applica- Abstracts of these papers will ap- tions and occupational disease legislation November November VRAMES VRAMES 2 VRAMES VRAMEVSRAMES VRAMES VRAMES VRAMES VRAMES VRAMES . VRAMES VRAMES pear in a future bulletin percentage 2 COVERED HOPPER CAR FOR GRAVITY UNLO 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- La problem burned lime and other hazardous commodities that the General Amerioan Transportation South LaSalle Street Chicago have devolopod Transportation Corporation 135 car that will unload 1and leased to shippers or consignces a covered hopper granular products by gravity An inexpensive track hopper is usually used in odinjunction with the ear and a boot between the hopper and the oer makes the un ' loading operation both dust proof and economical VRAMES VRAMES VRAMES VRAMES VRAMES XEXE + JON JON JON B Papers on Dust Dust Diseases and General Industrial Hygiene 3 DUST RAZARD 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 a in Pittsburgh All workers undergo an annual physical examina large plant the location of each man's work tion and careful histories are taken showing 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 sill silice and 10.3 calcium and magnesium silicatos 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 all these workers was and 617 dust per Concentration was observed The death rate among FS Reality. HL 03117794 ne ~ B.I. Castleman 04 6661 6661 6661 66666161 6661 . JOQUIOAON JOQUIOAON JOQUIOAJONOQUIOAON JOQUIOAON JOQUIOA NJOQUIOAON JOQUIOAON y BRAMES BRAMES BRAMES BRAMES BRAMES BRAMES BRAMES BRAMES : RRE E RE ON References to Recent Literature 4 80 7 82 11 PNEUMOCONIOSES OF THE WORKER K. Wider Ztschr f Gewerbehyg u Unfall 44 131-5 Silicosis have been 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 STILAR OBJECTS IN THE LUNG PULMONARY ASBESTOSIS Medical College of the State of South Kenneth M. Lynch M.D. Dept. of Pathology 674-8 Dec. 11 1937 Re- Carolina Charleston S. Carolina J.A.M.A. 109 7 microns prints probably obtainable from author asbestosis body is an object 10 to over The typical asbestos body also called of a central translucent 100 and 1 to 12 microns thick and is composed enveloping shiny golden or brownish fiber or needle crystal of asbestos with an Sometimes it substance constructing various architectural figures gelantinous A Prussion blue reaction for iron is beaded or clubbed and sometimes spherical in the lung especially in is given These bodies may be found at various places route usual- usual- the bronchioles the alveoli and in the tissues along stuhreprliysmipnhgaltyiclong consider- ly shorter at a distance from the alveoli bsuotmetoifmtoesn sause fibrosis around them ing the distance they have traveled They They are also found in the sputum of those exposed to as- the but not necessarily or absence in the sputum does not indicate bestos dust but their presence to the absence of asbestosis their presence only shows that exposure presence or Similar bodies have been found in persons exposed to coal dust has occurred died of heart failure rheumatism and arteriosclero- dust and in others who have to asbestos dust does not al- sis without known heavy dust exposure Exposure of animals asbestos bodies bare fibers have been found in the lungs wTahyes apurtohdourcehas seen silica particles similarly enveloped in cases of silicosis 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 FULMONARY FIBROSIS OF HEMATITE IRON ORE MINERS J. Craw Tubercle 19 8-1e8xamOicntaotbieorns 1o9f3h7ematite miners in West Cumberland England the In radiograacpchuimculations show a definite and dense shadow apart from any accompany- hematite silicosis when a miner complains ing fibrosis and there is a tendency to diagnose of the test show generalized of unfitness and his pulmonary symptoms and the rhaowyever is low and in spite of nodulation The silica content of inhaled dust nodulation in all lung fields the miners are 20 to 30 years work and general For these reasons hematolog- perfectly fit for work and are not short of breath essential in diagnosis Routine procedure includ- ical work was instituted as an determinations 1 sedimentation rate of the red cells 2 etdotatlhe whfiotlelowcienlgl count 3 differential white cell count and 4 the polymor- phonuclears count of von Bonsdorff The findings in 6 cases are given with case 20 normal miners had no complaint histories Of the 50 hematite miners studied while 30 - and no ray or physical signs of pulmonary fibrosis 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 norme and the ratio of poly- shows a definite increase in porcentage of lymphocytes rate and becomes 1 or less The sedimentation morphonuclear cells to lymphocytes the sedimentation rate in- nuclear count are normal When infection is present creases the nucleir count increases and there is a leucocytosis which may ap- the method is recom- proach * septic count Although the results are preliminary fibrosis and of mended for aiding the differential diagnosis of siderosis without at an silicosis and for detecting tuberculosis or other infective agents early stage 03117797 - B.I. Castleman 05 8661 8661 8661 8661 8661 20quiOAONI 20quiOAONI 20quiOAONI 20quiOAONI 20quiOANI 20quiOAONI ABRAMS ABRAMS RE RE RE RE RE RE JON 806806 Hygiene Foundation Air of America Inc. 000-09AN T.Z. Hylan 4400 000-09AN 000-09AN Hylan Fifth Avenue T.Z. Hylan Hylan Hylan Pittsburgh Pa File File February 10 1938 000-09AN File REFERENCES TO RECENT LITERATURE ON DUST DISEASES 1. News Items 98 NEW ROCK DRILL DUST CONTROL Eng News Rec 119 1058-61 Dec. 30 1937 A group of ontractors 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 silidosis 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 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 contractors 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.WET DRILLING FOR SILICOSIS CONTROL Eng News Rec 120 118 Jan. 20 1958 This note reports progress in the testing of the wet process 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 sub- mitted 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 TORKEN'S TORKEN'S COMPENSATION LAW Survey of Labor Law Admin 8 December 1937 Effective campaign against employers who fout or evade the law has been waged by the New York Labor Department with the cooperation of the Attorney General Ocording 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 has also been violated by physicians in various respects including solicitation flagrant advertising false testimony padded medical bills refusal to operate without written orders and limitation or discontinuance of treatment for fear the bill will not be paid In handling these violations the Labor Department has th support of the courts and of county medical societies A committee is now considering complaints against physicians as part of the larger problem of establish ing sound principles of medical practice for possible future amendments to the law 03117815 B.I. Castleman 06 1992 1992 19921992 1992 19921992 November November NovemberNovember NovemberNovember AIMES AIMES AIMES AIMES AIMES 14) Udy, | AB AB AB AB AB KKE E KE KE KE KE 4 JON JON JON JON JON References to Recent Literature ~ 2 76p2u5c9k 101 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 booklet concerning the State Unemployment Insurance Law entitled Information for Employees It explains the procedures for filing applications for laws and for unemployment insurance benefits To meet the public demand 5 million copies are being printed 102 OCCUPATIONAL DISEASE COMFENSATION 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- cury benzol and its nitro amido or amino deriva- tillates halogenated hydrocarbons infection from tar pitch bi- tives radium ray chromic acid and its salts tumen mineral oil paraffin oils cutting compounds lubricants dust liquids and anthrax and injury from asbestosis silicosis or anthre fumes gases vapor cosis miner's asthma and caisson disease compressed air illness Silicosis silicosis and asbestosis are not compensable for temporary or partial dis not exceed 3,600 in any one case These limite ability employers liability may tions do not apply to the other industrial diseases named The cost will bear mor heavily on the industries having the greatest industrial disease hazards in Fennsylvania Fennsylvania tabulated and an- A recent survey of industrial disease hazards hazards industrial establish- alyzed by a WPA project involving a field survey of 16,000 disease ments indicates that the total number of employees exposed to industrial 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 continued TRAINING PENNSYLVANIA FACTORY INSPECTORS Survey of Labor Law Admin 3 Dec. 131 Certificates were recently awarded to 90 Pennsylvania State factory inspectors who had completed the training offered in three separatethe2 wFeenenkssylvsaanfieatyDaenpdarthmeeanltth of training courses These 3 courses were organized by with the University of Pennsylvania University Labor and Industry in cooperation of Pittsburgh and Fennsylvania 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 plants with satisfactory and with unsatisfactory conditions These trips were fol and accom- lowed by classroom discussion of the hazards observed with proposed 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. Castlema0n7 PARASTI PARASTI PARASTI PARASTI PARASTI PARASTI PARASTI JANTITA JANTITA JANTITA AONI " | L'AVI ASANT ASANT ~. ? ? ? ? ZS . v . LY > fl u . Foundation Air Air Igiene Igiene Igiene Igiene Foundation Foundation 1845 Avenue 9 4 0 1845 1845 Avenue Pittsburgh Pa March 12 1953 of americ americ Inc. Inc. 0009660 0009660 0009660 0009660 0009660 0009660 - KW8B KW8B KW8B 134 NIS ENT JONFTREIVE Ind Md , 3 Jan. 1333 is Conference on Ocupational Dise_sed will be held in Chicago The Millent with the Annual Meeting of the American lene te is year in tonjunction for the first time in the Assuriation of industrial Physicianu ani tuwriilzlonfseature scientific and h^/use 50 the velation its convention onal ixhibits program INDUSTRIAL HEALTH COUNCIE FIRST MEETING MEETING Ini Med 17 90-2 Feb. 1938 the American Medical Associa- The In.ustri Health Council has been formed by Its discases from the medical standpoint tion for the study of empational 10. Several phases of occupe- first meeting was held in Chicago on December of the and are discussed with reference to the scope tional hygiene task and a long program before it is realized that the organization has great it Another meeting was planned for February SILICOSIS FILM Surv Labor Law Admin a Jan. 1938 also notice from W.2 Dept. of Labor release o motion picture on the harm- The U.S. Department of Labor will shortly to enlist workers em- ful effects of silicosis and the methous of prevention disease ploy ra and the general public in the battle against this industrial and importance of the disease The film then The nucrator presents the history and how workers are exposed An animat- describes where vilice dust originetes shows how dust particles od section of the uptpheer thearmlifnaolf tahier hsupmaecneslunagnd how breathing is impeded enter and are carried to Scenes in musty plants without proper safeguards are when lungs are clogged dust control nethods 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 e ledte ExinhiMbairtchcoRpeiqesuests for booking should be made to the Division of Lacor Standards U.S. Department of Labor Washington D.C. 187 VORMEN'S COMPENSATION FOR SILICOSIS Reviewed in Surv Labor I.L.O. Study of is issued as International La Aumin 10 Jan. 1938 The original publication 16 and is obtainable from Labor Office Study - Series F Industrisi HLyagbioerneOfNfoi.ce 734 Jackson Place the American Herdquarters of International special Washington F.C. Price not given for silicosis - This study presents three typical systems of ctohmrpoeunghsatsipoencial schemes in Great tur.ugh special legislation in South Africa of blanket Britain and through special coverage in Germany TheDetaapipllsicaotfioenech plan are coverage to silicosis is considered in an appendix discussed Prevention is stressed in the laws of eich country B.I. Castleman 08 References to Recent Literature >> 7 / 2661 2661 2661 2661 2661 2661 2661 IoqUIOAON IoqUIOAON IoqUIOAON IoqUIOAON 80 96 the effects of varying air conditions is receiving the greatest amount of at- tention The alkalinity acidity and toxicity of mine atmospheres is being studied In connection with drilling operations and blasting no basis is found for a general statement fixing permissible amounts of dustiness Ex- tensive use of water is considered good practice in dealing with the dusting as well as the use of from blasting The wearing of respirators is common water blasts With regard to ventilation the use of cuxiliary fans and piping honvior pipe and flexible lines is grisowcionngsideThreedOnthtearimoostactscrrieoquusires 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 number of now cases during the past 5 years but the period of exposure ncccs- of the discase has longthened from 10 to 18 years sary for development to counteract tubercu- Special emphasis is laid laid upon the value of measures losis From abst in Colliery Guardian Jan. 14 1938. p 75 IoqUIIOAON oqUIOAON IoqUIOAON IoqUIOAON IoqUIOAN AM'S AM'S AM'S AM'S AM'S AM'S AM'S AM'S a, a AB AB AB AB AB RE RE RE IN NQ. 204 ASPECTS OF THE SILICOSIS PROBLEM A.J.Lanza Am Inst Min Mot SOME PHYSICAL obtainable from Engrs Toch Publ No. 856 Nov. 1937 Reprints probably Dr. Lanza Metropolitan 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 Onc point emphasized there is littlo appreciable disability con- lom in this country believe that and that tuberculer infoe- nected 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 orost of a wave of litigation enmo 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 essentially 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 out in silicosis prevention in In the mining industry much has been accomplished have not the absence of specific codes or regulations Safe concentrations beon absolutely determinod but there is evidence that a concentration of cubic foot of highly siliceous dust is den- more than 5 million particles per less than % free silica has been found gerous Anthracite dust containing of less than not to cause disabling silicosis anthracosis in concentrations million particles per cubic foot Samo progress is being mado in estab- and moro should be dono ir lishing tentativo standards in the mining industry authorities that line by mining companies with the cooperation of governmental The effect of other dusts in modifying the action of silica should be further studied Intelligent handling of the medical control problem especially in dealing with silicotics who are not disabled is stressed 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 Pr.go of Documents Washington D.C. for 5 conts cash Obtainable from Supt the dust control methods used in an as- This paper prisonts a detailed study of bestos fabricating plant and supplements an extensive medical and engincer- ing study of the health of asbestos workers as yet unpublished The plant an extensive dust control program and the re- sstulutdsiedare hasnotpartotlybe cominptleertperdeted as representing the maximum possible offic- in Asbestos dust control but simply indicate actual conditions which iency this country at this Arc probably representative of the best practice in with the dust control systems in usc time The entire process is described with the various processes in oach department An occupational analysis of B.I. Castleman 09 - 1992 1992 19921992 November November November November November November November NovemberNovember ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS : : RE ININ 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 climination of dust is impracticable dust control methods dctual conditions resulting from application of practical can be used as temporary standards by that industry 206 INDUSTRIAL EXHAUST VENTILATION EXHAUST HOOD ENTRY SCEFFICIENTS John L. Alden Heat & Vent 35 47-350 Fob 1938 This paper continues the author's scries on industrial exhaust ventilation The entries contraction entry coof- technical treatment of rate of air flow in in the December paper is continued Diagrams of hoods ficients otce begun of different types are given with the appropriate entry coefficient ontry loss flow through hoods are and nonrest simple crifico The methods of increasing discussed Our latest in- e 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 and Ventilating published by only by purchasing or subscribing to Heating The Industrial Press 148 Lafayette St. New York City 207 EXILIUSI FEQUIREMENTS FOR 72 74 Feb. 1938 Exhaust requirements for wheels are discussed in FOUNDRY JUST 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..Davies J. Inst 317-36 1937 A general description of collecting and dust soparators Hosting Vent Engrs British 5 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 .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 203 FOOT AND LEG PROTECTION IN THE FOUNDRY 1. 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 pnaepeedr of corfort as well as safety and standards that are expected in the manufacture of safety footwear 210 THE USE OF EYE 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 are available for all types of work and the needs for the par- cost Goggles must be considered The cup type offers the most complete ticular operation B.I. Castlema1n0 1993 1993 1991933 1993 1993 1993 1993 NovemberNovember November November Novembr November November November November {] . are NAL ARAR RP RP RRP P RP RP RP JON -- ---- -- ---- ---- -- ---- ---- -- 8887926 Air Hygiene Foundation of America Inc. 4400 Fifth Avenue Pittsburgh Pa May , 1938 87926 REFERENCES TO FECENT 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 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 shota grit free working methods and suggestions for the solutions of variou 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 a 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 announced Fourth Annual Virginia State Safety Conference at Norfolk June 3-4 Ninth North Carolina State Industrial Safety Conference at Asheville June 10-11 and the 1938 Western Safety Conference at Los Angeles Sept. 12-16 B Pacers on Dust Dust Diseases and General Industrial Hygiene 342 DUST SAMPLING WITH THE BUREAU OF MINES MIDGET IMPINGER USING A NEW OPERATED FUMP 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 consists 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 leading from the case to the impinger A flow of 0.1 cubio 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 B.I. Castleman 11 11 6 6I 666I 666I 666I 666I 666I JOqUTOAON JOqUTOAON JOqUTOAN JOqUTOA NJOqUTOAON JOqUTOAON JOqUTOAN JOqUTOAON JOqUTOAON JOqUTOAN ABRAMS ABRAMS ABRAMS ABARAMBS RAMS ABRAMS ABRAMS KKE E JON JON References to Recent Literaturo -6 610-804 357 PULVERIZING SILICA SAND D.E.Wilhelm Rock Prod 41 47-8 April 1938 This is a brief illustrated description of the plant of the Milwood Sand Co. at Zanesville Ohio The dust hazard has been practically eliminated by the use of dust seals on all equipment in which dust is generated 358 358 358 SOLVING THE DUST PROBLEM F..Ortman Jr. Safety Eng 75 13-6 april 1938 Information obtainable from the author Personnel Manager Koppers Company Baltimore . The Author briefly milling and boring describes the department of dust control methods used ir the grinding 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 entisfactory for 13 years with improvements that have been added more recently The area of the sorcon has been increased third by the adoption of an improved type of scroon measure a without increasing the size of large portable vacuum cleaner the sorcon house As an auxiliary with interchangeable nozzles is used for cleaning walls and ceilings 359 THE DEARING ON SILICOSIS QUESTIONS INSURANCE TO INDUSTRIAL DISEASES OF THE THIRD Lochtkemper LAW FOR EXTENSION OF ACCIDENT Zbl f Gewerbehyg 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 He also reports on some of his own experiences including cases of silicosis in chamotte workers and ir clay tube factories One case was that of a man who 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 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 now 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 spite of removal from exposure Obsoleto and new protective measures are contrasted with illustrations and the necessary technical improvements are described 361 PHOTRONFEFLECTOMETER - AN INSTRUMENT FOR THE MEASUREMENT OF TURBID SYSTEMS R. L. Libby J. Immunol 34 71-73 Jan. 1938 An instrument for measuring the 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 e substance causing a current to be generated under the influence of light is placed not in the direct beam but around it The B.M.F. generated is registered by a galvanometer and is a measure of the scattered 03117840 B.I. Castleman 12 8661 8661 8661 NoqWIOAONNoqWIOAON NoqWIOANNoqWIOAON NoqWIOAONNoqWIOAON NoqWIOAON NoqWIOAON NoqWIOAON NoqWIOAON NoqWIOAON NoqWIOAON ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS RE RE IN ~ 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 photopricts should read 20 cents for the article plus 10 cents per page instead of 5 cents per page 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 P. 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 silicosia amendment there was a total of 18 awards with an approximate cost of 12,000 The pending amend- ment 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 regulata interstate commerce in goods produced under conditions exposing employees been introduced by to the hazards of silicosis and related Congressman O'Connell of Montana dust diseases has 400 COOPERATING TO ENFORCE WORKOMEN'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 treasurer 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 work- men 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 discuses 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 JOqWOAON ABRAMS ABRAMS ABRAMS RE RE RE RE ININ IN M48 -6 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 sand grinding and shake operations Combined with this employment and periodic examinations are essential so as to prevent tuberculous individuals from carrying on a justy trade and to discover new infection and reactivation ceses 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 peroxide as avoiding material decomposition of the original dust Organic acids may be generated luring the decomposition process but their action is weak eI- cept on carbonates which are mostly dissolved The characteristic ingredients of asbestatic lungs the asbestosis bodies however are more resistant and undes 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 practically unchanged state In cases where the lung dust contains carbonates or 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 tetrabromide 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 usbestos 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 alkalime 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. Castleman 14 119992 92 1992 1992 1992 November November November NovemberNovember NovemberNovemberNovember November NovemberNovember November ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS XP XP XXP P XP JON 9461809-,,u Air Hygiene Foundation of America 4400 Fifth Avenue Pittsburgh Pa Septembe7r 1938 Inc. REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES News Items 620 MOTORS CORPORATION MEDICAL CONFERENCE G1E9N3 ER8AL Ind Med 7 469-70 August 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 Medi cine for August Those dealing with air hygiene and general industrial health are abstracted in this bulletin with the statement that they were presented AT 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 anintensive 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 comferences 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 iseases By way of actual demonstrations of medical supervision in industry a tour of representative plants will be made Registration is limited to 45. Full particulars are obtainable from Department 31 Industrial Hygiene University of Pittsburgh Pittsburgh Pa 03117852 - B.I. Castleman 15 1992 1992 1992 1992 1992 1992 1992 1992 NoveNmboervember November November NovemberNovembr November 4 November ABRAMUSABRAMUS ABRAMUS ABRAMUS ABRAMUS ABRAMUS ABRAMUS ABRAMUS ABRAMBUSRAMUS / ABRAMUS ABRAMUS ABRAMUS ABRAMUS RERE RE RE RE RE RE RE ON J < References to Recent Literature - 6 HW8- 79 640 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 mein 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 pertly 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. Leemmert 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 c 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 03117857 haust how dust can be decreased in certain processes systems and practical planning by installation of ex- B.I. Castleman 16 666I 666I 666I 66I6I JOQUOAON JOQUOAON JOQUOAON JOQUOAON JOQUOAON JOQUOAONJOQUOAN JOQUOAONJOQUOAON JOQUOAON AABRABM3RAM3 ABRAAMBRA3M3 ABRAM3 ABRAM3 ABRAM3 ABRAM3 : : RE RE RE JON JON JON JON JON JON Air Hygiene Foundation of America Inc. 4400 Fifth Avenue 80796 Pittsburgh Pa October 13 1938 ' REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES News Items INDUSTRIAL AMERICAN PUBLIC HEALTH ASSOCIATION Ind Med 1 589 Peptember 1938 The Industrial Hygiene Section meeting of the 67th annual convention of the American Public Health Association to te held at Kansas City October 25 28 1936 should contain material of interest to all who have industrial medical problems The addresses as they are published will be abstracted in this 701 NATIONAL SAFETY CONGRESS Ind Mad 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 Fun Seatrice thi bulletin 4 702 NEW BOOKS OCCUPATION AND SUPPLEMENT eo International Labor Office 754 Jacks < Place Washington D. C. This supplement which will consist of 500 pages chased for 5.00 The first installment to this when last completed supplement ~ can be parcomprises 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 discusses properties uses and toxicity and should be a valuable reference those interested The book is a British Publication The U. 6. address is It to The British Library of Information 270 Madison Ave. New York City Price 7s 6d about 2.00 Industrial 8 Papers on Dust Dust Diseases and General Hvziene 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. Teloly 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 It the first half of the paper mechanics Just inhalation are considered together with concentrations found and the path- of mixtures The second half dis- ccluosgsiecsaltheandoffreocetnstgeofnogbrraepahtihcianlg vsairginciufsicadnucsets including grain dusts dusts like B.I. Castleman 17 1992 1992 1992 199219921992 1992 NNovembor vember NovemberNovember November November November November November November November S S S UMCE UMCE UMCEUMCE A ASUASU ASU ASU ; RERE RE ON ON ON References to Recent Literature_ 2 "2 704 ayn? Thomas slag and various minerals known references Bibliography is brief and is limited to PATHOLOGY OF THE SILICOTIC NODULE Joseph Walsh Am Rev. Tuberc 35 363-71 September 1938 White Haven Sanatorium White Haven Pa POR) . The author presents the results of 20 years of observation of anthracosilicotic " lungs with several photomicrographosf affected lymph nedules 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 noles The puliorary anthracosilicotic cule begins by thickening of the interstitial tissue and lymphatics the development of fibrous tissue in alveolar 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 Obtainable 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 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 silicotica 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 influ- ence 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 19921992 1992 1992 1992 November November NovemberNovember November Novembr November ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS KEKE KE KEKE KE OONOON References to Recent Literature - S 712 713 0 879 3 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 the rate of loss of silica in the Knopf hydrofluosilicic acid and the Line 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 interest 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 demonstrated by Moke Harris 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 upper left lube This shadow was considered by the author to be a carcinoma and in the decision on the case a causal relation between the presence of asbestosis and the development of carcinoma was accepted The correct diagnosis of carcinoma was confirmed on atuopay THE INDUSTRIAL CANCER OF WORKERS IN ASBESTOS M. Nordmann Ztschr Krebaforch 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 TESTS 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 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 toats 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 716 SOME OBSERVATIONS ON MINE FANS AND MINE VENTILATION D. Harrington and E. H. Denny U.S. Bur Mines Inf Circ No. 7032 20 pp August 1958 Obtainable free from Division of Information U.S. Bureau of Mines Washington C. Ventilation is one of the most important single operations in mining for pretecting lives and in promoting efficiency of operation During 1932 and 1955 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 866T 86 T866T 866T866T 866T 866TJOQUIOAONI JOQUIOANIJOQUIOANI JOQUIAONI JOQUIOANI JOQUIOAONI l y ( ABRAM ABRAM ABRAM ABRAM QRQE RE t JON ta a AAA700C - AAA700C AAA700C Air Hygiene Foundation : America Ine A A70 C 4400 Fifth Avemie Pittsburgh Pa HURR November 14 1938 HURR REFERENCES TO RECENT LITERATURE ON INDUSTRIAL DISEASES A News Items 794 ead FALL MEMBERSHIP MEETING OF AIR HYGIENE FOUNDATION held annual fall membership meeting of Air Hygiene Foundation will be The 17. More than 200 representati Mellon Institute Pittsburgh on November will hear report industrial concerns in all parts of the country at The Saranac N.Y. the researches which theofFoPuenndnastyilovnaniisa suHpaprovratridngSchool of Public Health Laboratory UniversiTthyese studies seek how measures for promoting Mellon Institute Besides these and the health and preventing occupational diseases will hear di medical engineering and legal committees the meeting consideration of the broad social aspects of industrial health as well as a the industrial relations and public relations side of the subject e@"*?" 2 a 4 oi of consideration The program includes i eee Social Aspects of Industrial Health Dr. Willard E. Hotchkiss Carnes hes at Institute of TechnologTyoward Further Protection of Industrial Health Report Dwinker oEfngPirneeveernitnigvePrEonggriensesering Committee Including Plans for 1959. Philip ae ee CShtaaitremaCnodes for Control of Industrial Health T.F. Hatch New York State ae Division of Industrial Hygiene Industrial Health Theodore 0 Babers, Report Legal Trends of Interest RespectDiinsgeases Commission 78, . Report Chairman MarylandTOocwcaurpdatFiuorntahler Protection of Industrial Health Medical Progress Medical Committee Including Plans for 1959. Dr. A.J. Lansa Chairman ee Changes among Bilica vil Some Practical Considerations Concerning Lung a ty Ta Hospital Dr. E.P. PendergrasRsesUenairvcehressitoyn oMfixPeendnsyDluvsatnsiaand Protector Dusta = Report on Further The 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 V.P. wan ee ee ee ee ee .. B.I. Castleman 20 C6EI C6EI C6EI C6EI C6EI C6EI C6EI NOQUINOAOONQUIOAON NOQUIOAONNOQUIOAON NOQUIOAON ; J NOQUIOAN NOQUIOAON ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS AABBRRAMAS MS KE KE KE References to Recent Literature - 5 803 804 TUBERCULOSIS OF INTESTINES IN TUBERCULOUS ANTHRACOSILICOSIS R. Charr and A.C. BUD.0 7 Cohen Am J. Med Sci 196 83-7 July 1938 Completa 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 BUD.0 7 incidence of intestinal tuberculosis in each group apparently higher in the age groups below 30 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 centa 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- of over 100 million particle had asbestosis The threshold limit posure particles per cubic foot and for exposure has been set tentatively at 5 million 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 INVESTIGATION ON CONTROLLING PNEUMONIA BY IMMUNIZATION OF WORKERS IN THOMAS M. Gundel & E. Homann Dtache med Wchnschr 64 917-21 1958 SLAGMILLS 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 recognised 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 HUB8-069758 ON INDUSTRIAL DISEASES REFERENCES REFERENCES RECENT LITERATURE A News (a) NOVEMBER 17, LOSE. MEETING OF HIGIENE FOUNDATION HELD NOVEMBER 1938 1938 annual 862 862 ANNUAL MEETING executives HIGIENE FOUNDATION HELD attended 1938 oD Mow Mom than executives Foundation industrial industrial concerns Institute Institute Pittsburgh annual fall fall meeting of Hygiene Foundation held at Mellon 1938. executives four corners Institute Pitsburgh Pittsburgh on November November 17 advances executives protection reports latest advances reports health dosen feder- representatives al al and agencies agencies recent engineering representatives representatives developments developments developments industrial industrial state covered health hazards and medical social economic trends state governing findings from latest from Air program included at University researches researches improving improving methods methods Hygione Foundatimo^n'dicalexaminations of Pennsylvania The Sai industrial N.Y. methods Laboratory scale of mixed dusts industrial studies Sai protector in ing diseases Laboratory University for two graduate - engineering engineering Harvard ax ing Other studies broad benefits for management Labor stressed the effort by employers labor bl ityinrdeussulttriyng from this collective in the ity ; will be published in Proceedings with texts of the papers near future the Foundation and copies sent to members NATIONAL future future the Foundation Labor Labor Div. of Standards CONFERENCE REPORTS PUBLISHED U.S. Dept. 1938 865 Labor reports No. 21 Parts 1,2,3,4 appointed April April follow- follow- 1, committees follow- These final February the four Bulletin 1956 ing the Conference Conference of that year They are Bulletin Part Report Report the Committee February Committee Prevention of Silicosis through Medical Control Part , Report the Committee Prevention Silicosis Silicosis through Engineering Phases Control Control Part 3 Report the the Committee Committee on Economic Legal Administrative Phases and 4 Report of from Superintendent Superintendent Regulatory Administrative Washington Phases . 15 They are obtainable obtainable frofm rom Superintendent Documents Documents 364 cents cents ~ each EMPLOYEE EMPLOYEE COMPARED U. S. PUBLIC PUBLIC HEALTH SERVICE NATIONAL Foundation STaTISTICS AS notice of the the ProcterFoundation Ivorydale which a bulletin bulletin health their the Company Company industrial compares health employces employces general average industrial workers compiled compiled the the U.S. Public Health The tabulations tabulations industrial three groups groups respiratory respiratory Health Service diseases digestive diseases diseases miscellaneous divided diseases Figures incidence incidence miscellaneous Procter & for and employees separated average case among Procter Gamble would glad significantly lower than attention attention all industry Foundation Foundation Foundation and call be receive similar data from fron attention other companies to receive end to attention Foundation companies be giad other companics. wow Castleman 22 22 86618661 8661 8661 8661 86614 JOqQUJOIqOQAUIOONAON JOqQUIOAOJNOqQUIOAN JOqQUIOAONJOqQUIOAONJOqQUIOAON JOqQUIOAON JOqQUIOAON JOqQUIOAON JOqQUIOAON ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAAMBS RAMS ABRAMS ABRAMS ABRAMS ::: : RE RE RERE RE IN IN to Recent Literature - 2 References 80 9759 IN INDUSTRIAL HYGIENE AVAILABLE FOR EMPLOYMENT from Massachusetts 865 GRADUATE Master's Degree in Industrial Hygiene first of the the A recent graduate with a be available for employment after AWBB Institute of Technology will studies in Industrial Hygiene he is also a grad- student AWBB year Besides his extensive well recommended both personally and as a Engineer He is having a possibility of an opening uate Sanitary Further details will be furnished to anyone B 866 Industrial Dust Durt Diseases and General Hygiene Papers on BY THE BUREAU OF MINES H. H. DEVICES APPROVED 1938 Obtainable LIST OF RESPIRATORY PROTECTIVE Circ No. 7030 July Information Schrenk i.s 512 of Mines Washington D. C. included a list of res- from Div of Isportation Isportation No. 735 we November 1938 Abstract 2 was issued This In our Bulletin ion Bulletin No. 2 Part since our Engineering First Supplement The pirators approved Bureau of Mines Circular and its that Circular issued lfiosltlowiinncgludreedspithreatoarbsoveare listed in a Second Supplement to November 12 1938 NN SCHEDULE 19A -Type C -- 2 SCHEDULE 21 -- Lead Dust 4 SUPPLIED RESPIRATORS Air Line Respirators Willson Air Line Respirator Models GA No. 1912 issued to Willson Products MECHANICAL FILTER RESPIRATORS GB and GC Approval Inc. October 7 1938 -- No. 750L Approval No. Willson Respirator October 19 1938 Willson Products Inc. 2125 issued to Type A and Lend Dust 5 No. 46 Dupor Respirator Cover October 3 1938 No. 2124 issued to H.S. Approval , 867 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- In an article prepared the complete etiology the work Association the author covers of silicosis and moconiosos 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 ticlus of these types of dusts and mixtures dusta in the lungs The action carbide nonsiliceous minerals silica silicate asbostos silicon The inhibitory action of certain minerals of free siliva 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 868 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 importance considered Asbestosia and silicosis pointed out Inert and active dusts are B.I. Castleman 23 6661 6661 6 616661 6661 6661 6661 JOQUIOAONI JOQUIOAONI JOQUIOAONI JOQUIOAONIJOQUIOANIJOQUIOAONI JOQUIOAONI JOQUIOAOJNIOQUIOAONI JOQUIOAONI JOQUIOAONI JOQUIOANI JOQUIOAONIJOQUIOAONI JOQUIOAONI AMB AMB AMByh) phar AFAF RRE E RRE E 4 IONION 09160 0-8 MH References to Recent Literature - 3 869 is made of the recognized but still mysterious are described simply Mention an excellent introduction effect of other dusts plus silica The paper provides silicosis who have not followed the literature on to persons 0916 -8MH SILICOSIS AND SIMILAR DUST DISEASES MEDICAL ASPECTS AND CONTROL R.R. Sayers 1453-71 August 19 1938 and R.R. Jones Pub Health Repts 53 to express different may While different definitions of silicosis be expected silica or quartz The in common the cause is views all have one thing of silica opal flint chalcedony is surprising- use of quartz or other forms estimated that % of all industrial workers in industry and it was the silica hazard required con- liyn porne evamlaennutfacturing center were employed where to some degree vary from Estimates as to numbers exposed at least of dusts which pro- sideration in 500,000 to 1,200,000 The authors review the characteristics or particle of estimating exposures particle duce silicosis the methods Most silicates are not and characteristics of individual susceptibility A notable exception years cause some fibrosis of the lungs dangerous dusts but may which causes serious 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 periodio tuberculosis should be particularly noted 870 no SILICOSIS 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 oufnisqiuelicacsa e which was uncomplicated by pulmonary posure to a pure form sandblast for 6 years exper- lusis The man operated an improperly equipped him to seek medical in the chest causing which developed iencing at the end of 5 years paasindsyspnea 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 33 years and in miners and evaluation cutters was +O1n.6t9he fboarsis of very careful statistical examinations that this 42 years the authors conclude that silicotics tend to a roefalsielxicceosssisweanidghtthat silicosis to excess fat increases with the degree view that tendency disease but a general one There is an opposing from the is not an organic in the mode of living resulting the weight increase is due to change 872 disease and invalidism THE INHIBITORY ACTION OF ADDED DUSTS THE SOLUBILITY OF SILICEJUS DUSTS AND 556-85 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. Castleman 24 1992 1992 1992 1992 1992 1992 1992 November November November November November November November November November November November November NoNvoveemmbbeerr November ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS ABRAMS : RE RE RE RE RE IN IN IN References to Recent Literature - 4 873 admitted that the sodium carbonate solution is much the more although it is used consisted of small particles 0 to active solvent of the two The dusts Of the dusts examined 6 microns separated where necessary by elutriation of their solubility were MWB8-0 9761 flint was by far the most soluble the octehnetrstotianlorsdielrica no free silica gran- quartz bull quartz whistone whistone 64 per sericite and stone dust sanistone 49 per cent free silica sanistone ite coal measure free silica The addition of shale dusts to e type of shale with 75 per cent while limestone dusts quartz decreased its ability in the sodium carbonate solubility of quartz 79 had little or no effect The greatest reduction in of silica depend- was caused by gypsum Coal dust also decreased the solubility for reduction ranging from 4 to 71 ing on the type and particle size the values per cent silicotic THE NATURE OF MINERAL PARTICLES IN SPUTUM AND ASH OF TH5E35L-U5N5GSNoOvFemSbIeLrIC1OT9I3C6S H.E. Burke and P.F. Kerr J. Ind Hyg & Toxicol 20 the nature of the mineral Comparatively little work has been done in determining authors describe a particles in the sputum of silicoticsof Itnhethsipsutpuampeorf tshielicotics and of the series of microscopic investigations and controls with no silica erpo- lung ash of silicotics tuberculous patients find refracting particles of the nature sure Although they were able to available it is difficult to of quartz in the sputum with the present technic of 4 tuberculo.13 positively identify the minerals Samples of ash of the lungs of a were found to contain large isotropic aggregates subjects but sericite feldspar or quartz Samples of calcareous phosphatic nature no 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 dust a sample of the order of 50 mg is For a complete chemical analysis and an examination of the required but for an investigation of the solubility Two of apparatus are extract samples of at least a few grams are needed types solid and a filter with a filter of a volatile used for collecting samples after determination of loss at 100 and a labyrinth For silica estimations to four times its weight of so- loss on ignition the dust is fused with three and neutralized by expo- dium carbonate The melt is taken up in 1 ml of water insoluble by evaporation sure to hydrochloric acid vapor The silica is made at 105 The three times with hydrochloric acid follo0w.e2d5 emalchotfimheydbryochdlryoirnigc acid and filter- residue is taken up in water with about for the iron and aluminum determinations The ed through a King filter and the silica volatilized by treatment insoluble matter is ignited and weighed of water containing di- with hydrofluoric acid andcreuvcaipbolreatisionfiinnallthye ipgrneisteendcefor 2 minutes and weighed method lute sulfuric acid The of silica in aqueous extracts King's colorimetric For the determination ammonium molybdate with a standard picric acid is used comparing yellow in the samples tested in large amounts com- solution Iron is never present method has been used satisfactor- pared with aluminum and the ahre ydrdoextyerqmuiinneodlianse the oxalate and ammonium phosphate sin ily Calcium anFdormadgenteesrimuimning sodium and potassium in a separate sample a respectively is very satisfactory Line reduces the solu- plified Berzelius procedure reduction in the solubilit bility of silica and an example is given of a striking of asbestos in the presence of lime or of cement B.I. Castleman 25