Document YjYKKeqn8zqkdJKjweqOv3RmV

PLAINTIFF'S EXHIBIT Industrial Hygiene Digest S^~J ib Ev jyv. rwui nl/a i 1^1 FACTS roundation Pacts is a montmr ntwi-ittur issusd to industrial concsrns holding momborship In Industrial Hyglsnc Foundation. Tha Foundation is a non-profit association of Industries for tha advancement of healthful working conditions. February, 1950 No. 2 Prof. Hatch Attending Silicosis Conference la Australia Theodore F. Hatch, Laboratory director of Industrial Hygiene Foundation, ; F.'ofeasar in the Graduate School of Public Health, University of Pittsburgh, is My in Sydney, Australia, attending an international coherence on silicosis, r.j 1j nn official representative of the United States Gcrvernme'iit and vill present a paper on "Analytical Requirements for Appraisal of Dust Exposures." The official appointment ftrom the Department of State, reads: "This is to certify that Theodore F. Hatch has been designated a delegate representing the Government of the United States to the International Conference of Experts on Pneumoconiosis of the International Labor Organization, to be held in Sydney, Australia, February 28 to March 11, 1950." The appointment further states that "it is anticipated that definitions of minimum international standards of com pensation for the disabled, covering disabilities caused by pneumoconiosis, should be derived from the studies presented by governments represented." Besides Prof. Hatch, the other official delegate from this country is Zr. Leonard Greenburg, Executive Director, Division of Industrial Hygiene ami Safety Standards, Department of Labor. New York. Prof. Hatch vill return to Pittsburgh early in April. Tow Industrial Hygiene Saves Money A Member company recently wrote.W.C.L. Hemeon, Foundation Engineering Director, as follows: "May I express our great appreciation for your time spent in giving ideas on our problem of handling lead pigment dusts. The suggestions which were contained in your report and in your personal comments have been extremely valuable to us and, in addition, have resulted in saving us several thousand dollars on our proposed installation." (Detailed inform-.tion on the Foundation's field services available to meaoer3 upon request.) I-H-F Staff Members Working in Idaho Smelter Dr. C. Richard Walmer, Medical Director, and Dr. H.H. Schrenk, Research Director, spent several days studying a health problem at an Idaho smelter recently. Ibey were followed by W.C.L. Hemeon, who worked out engineering control measures to reduce exposures to a highly irritating dust. The investigation is still in progress. I-H-F l,At HYGlCNe FOUNDATION 4400 rtFTH AVENUC PlTTSBUffOH (l). PA. Industrial Hygiene Digest - 20 February, 1950 198 An Investigation of the Occurrence of Silicosis In a Plant for Fusing Ferros llicon and Ferrochromium. C. Broch. Hard. Hyg. Tidsk. 1 1-T (1949) Scandinavian. In a plant for Fusing Ferrosiliccm And ferrochromium, the author Found a cans Iderable number oF varkers "whose lungs shoved 8 Ulcos Is. The workers who charge ferrosllicon Furnaces are especially susceptible, because oF the heat. The dust In different places In the Ferrosilicom Furnace house shoved a content oF From 48 to more than 80 per cent silica. X-ray examination Indicates that the dust is largely amorphous. The Ferrochromium workers shaved no silicosis after 13 years employment, and the author believes there Is less danger oF silicosis there. -- Condensed from Author's English Summary 199 Hemosiderosis and Dust Betlculatlon oF Coal Miners (Interesting Case Report). A. Meiklejohn. Brit. J. Radiology 22, 5^7 (Sept., 1949), Meiklejdhn says that the similarity oF the radiographic appearances oF hemosiderosis In certain cases of mitral stenosis and the dust reticulation of coal miners is now well recognized. The differential diagnosis should seldom cause difficulty, if clinical and radiographic findings are considered In relation to the precise details of the occupational history. It should not be overlooked that the two conditions may coexist, although the combina tion must be rare by reason of the seriousness of the heart lesion, the physical strain of work and the long period of exposure required for the development of pneumcmoconiosis. The author reports a miner with rheumatic carditis and mitral stenosis "whose heart condition was associated with hemosiderosis and pneumoconiosis of the silicotic and dust reticulation types. Post-mortem examination corroborated the coexistence of the con ditions . -- J. Am. Med. Assn. 200 Pneumoconiosis and Lung Cancer. With Special Reference to Silicosis and Asbestos la . L.W. Smith. Compens. Med. IT, 3-10 (Nov. 1949). A discussion of the relation of pneumoconiosis with particular refer ence to silicosis and asbestos is and the subsequent association of pulmonary cancer has been presented. An attempt has been made to critically analyze the statistical data which has been presented In the literature over the last quarter of a century, both pro and con. In respect to the etiologic relation ship of these two conditions.^ An attempt has "been made to point out the Inadequacy of the evidence incriminating silicosis as an etiologic agent in the development of cancer of the lung. It is emphasized that such data should be reviewed by the court In considering compensation on the basis * of insignificant statistical data in respect to control Information re garding the incidence of carcinoma of the lung for the community In which the patient lives, for the occupational group as a whole and corrected in respect to age and sex. Otherwise, such evidence will be found wanting and Inevitably in favor of the claimant. The recognition that such claims for compensation will become of Increasing frequency due to the general Increase of carcinoma of the lung throughout the world is shown. -- Author's Conclusions