:,V pathology studies, rnssxiature films 284 405 ' 79 78,604 496 A traosphertc pollution (see air pollution) Atmospheric turbulence measurement 643 Atomic bomb casualties, treatment effects on blood 747 619 A vtation toxicology (bk. rev.) 559 Bacteria and odor control problem 102 Bagassosii 5QI BA L therapy m leau poisoning 361 therapy in thallium poisoning 148,813,319 vs. citrate in lead poisoning 469 careers1 aueaje Banrosis, zz.se Beat cisoroers and staphyiococcai .r.iection Benzene au homoiogues. poisoning bieoa dyscrasias from factories health of workers metabolism poisoning and erythromyeiosis effect on piateiet3 hematology 1.1 . . 7T 3

234 CHAPTER 17 1959 Guide to the panel, with leads provided for easy field connection.

Beek experience indicates there aro four1 major atumbllng blocks that lead to low- pressure can jump rapidly to (Jk safety-valve setting.

April 6 - A panel of the nation's leading cancer detectives today condemned smoking as the No. 1 culprit in the rising incider dence of lung cancer Only two of the eight experts made more than a passing reference to air pollution as a cause The fumes haven't been in the air enough years and not enough people have lived there Los Angeles long enough to get any big change in the statistics said Dr.

the the 2700 stopes exhaust fan and joining with the by way of old worked other out Dust Counts The attached figures sppear to me to be i very high for the underground workings Whilst I do consider that attention could be given to improve the air circuit through the mine conditions underground were satisfactory and is evidenced by the wet and bulb temperstures Compressed water jete Hre supplied at the ore passes into which the ore is scraped During seventy five percent of the time I spent at the Colonial mine water was not available due to the main water pipe to the mine being broken This caused boring operations to be suspended but did not effect the scraping which continued irrespective of water being available or not With the instrument used for taking the sample of dust there is ' tendency particularly in a dusty atmos- phero for future sections of the glass slide to be poluted I feel then that the results obtained under these conditions for the dust samples are not a true indication of the dust content of the air Trestmont Plant Little visible improvement was evident to the external appearance of the treatment plent However much is being attempted in an endeavour to improve the dust collection That suction of the pl^,ntwhich includes the Rolla Kubit brosker and screena has been totally enclosed and fitted with exhaust ducts which connect to ducting leading to a Rotoclone dust collector This dust collection appeara satisfactory Another Rotoclone unit is installed but sa yet has not been permamently connected to the roof discharge from the fibre collecting cyclones An inadequate supply of power was given a one reason When connected @ greet improvement is expected Foundations for a third Rotoclone dust collector have been commenced It is anticipated this will exhaus dust crested at the crushing units inside the plant building Plens h^,ve been prepared for the construction of a new treatment plant st the Colonial mine Bulldozers were in operatio levelling out fill for the foundation for the site The high cle- vation of the entrance to the mine on the gorge fuce and the f^,ll into the velley of the gorge should assist in the plant layout Th first construction anticipated is the instelletion of a conveyor belt in the lower tunnel to convey the ore from the mine bin to a jew crusher thence to a Symmons crusher and to a storage bin The ore will be carted by trucks from this bin to the treatment plant i Wittenoom gorge whilst the remeinder of the plant is constructed General At present the fibre being recovered is in the vicinity of 1000 tons per four weekly period and tala from the treatment of 17,000 tons of ore It is envisaged that a tonnage of 40,000 tons of ore per four weekly period will be si^ ...

Address by Daniel S.

animals However I must add that such circumstantial evidence 1 alone should not necessarily lead to a conviction and that - other more direct evidence has been accumulatinginrecent years Massachusetts In 1928 Lombard and Doering of the State Health Department conducted a study in which patients were of questioned about their smoking habits A larger percentage heavy smokers was found among patients with cancer of groups the2 buccal cavitythan was found among other No mention was made of lung cancer probably because itwas arelativel;y Bats Ay ir relatively rare disease at that time = va coca Raymond The next significant study was made by Pearl of the .

FILE NAME Industrial Hygiene Foundation IHF DATE 1952 DOC IHF016 DOCUMENT DESCRIPTION Foundation Facts Nov INDUSTRIAL HYGIENE FOUNDATION letter issued Foundation Facts is monthly Industrial to : Industrial concerns holding membership in Hyglene Foundation The Foundation es Society American Foundrymen'sFoundrymen's Celanese Corporation ofAmerica Company Lakey Foundry and Machine | The RefractoriesInstitute Managing recorded for broadcasting subjects the weeklyseries are research Science in Living The fisrsttaftfalokveSrciWeDnUceQatnhde|radio Director ofthe Foundation has been tape onJanuary 1952.

Breaded shrimp is now the lead ing frozen prepared shellfish product.

FILE NAME State of the Art Literature SAL DATE 1955 DOC SAL062 DOCUMENT DESCRIPTION Journal Editorials - Silicosis Asbestosis and Cancer of the Lung American Journal of Clinical Pathology OFFICIAL PUBLICATION OF THE AMERICAN SOCIETY OF CLINICAL PATHOLOGISTS W.

88 CHAPTER 8 1959 Guide recirculated air is a recognized practice.

For purpose of completeness and general information certain brief comments seem justified for guidance in the design of the experimental approach which we propose ee en at e SuscentionSuscention we " A number of experimental mothods may be employed to test the capacity of asbestos to produce cancer It is desirable to keep in mind however certain facts concerning asbestosis which affect the selection of the method 1 Asbestosis is a chronic pulmonary disease resulting from the deposition of asbestos fibers in the lung therefore the experimental mathod employed should direct em- phasis on the lung 2 The weight of evidence is that asbestos fibers pro- duce their irritation by a mechanical rather than by a chemical mode of action The mechanical action is intimately related to the movement of the lung during respiration Thus an experimental method which neglects movement of the lung and there- by in probabilitywould be all excludes the mechanical action meas ree ECU me oe ee oe highly inconclusive and subject to criticism 3 Asbestosis is a disease resulting from widespread dis- semination of asbestos dust in the lung Reliable conclusions in an experimental investigation with asbestos carot from experiments be drawn solely drawnrem te with the intratracheal injection ee injection technique whereby a high concentration of dust becomes localized ee in a restricted portion of the lung and stimulates excessive focal irritation When the asbestos dust is introduced into the animal in that manner the injected dust may miss certain potentially producing sites in the lung which are remote from the localized area of implantation of dust It is further possible for the excessive focal irritation which is not a characteristic feature of human asbestosis to induce pulmonary cancer which would not have developed had the dust been uniformly distributed throughout the lung Thus the intratracheal injection technique ; alone might lead to unwarranted conclusions The intratracheal method has been used for cancer studies by a number of investigators probably because of the relative difficulty and tedioumesS of methods involving inhalation of the potential carcinogen The | inhalation method however has been employed by eminently recog| nised investigators of carcinogenic agents 8 In passing it might

Myers, Rohm & Haas Company Alex Stewart, National Lead Company R.

._. might lead t o escessive =Tosure to benz ...

Spinning entails exposure to acetone and carbon disulphide possibly leading to nervous and digestive disorders and an irritation of the mucous membranes.