Document G6V9ZpbDaRNeD3oxdXZQXmpMN

Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL LEGAL * decision* ad tread* MARCH, 19S0 (VoL 14. No. 3) INDUSTRIAL HYGIENE FOUNDATION 4400 FIFTH AVENUE PITTSBURGH 13. PA_ FOUNDATION FACTS Foundation Facta la a monthly nowa.lattor iaauad to industrial concam* holding membership In Industrial Hyglsns Foundation. Tha Foundation is a non-profit association of industries for tha advancement of healthful working conditions. March, 1950 Ho. 3 Foundation Farms Air Pollution Committee Die Foundation announces formation of a committee on Air Pollution, recently gatherized by the Board of Trustees. Members of the committee are: Kr, Alex D. Bailey jfr. Ward F. Davidson Hr. Henry F. Hebley Dr. George R. Hill Sr. Raymond Hussey Sr. L.C. McCabe Vice President, Commonwealth Edison Company Research Engineer, Consolidated Edison Co., of Hew York Research Consultant, Pittsburgh Consolidation Coal Co. Dir., Agricultural Research, American Smelting & Refining Co. Scientific Dir.,Council on Ind. Health, American Med. Assn. Chief, Office of Air & Stream Pollution, U.S. Bureau of Mines The new committee takes its place with the other professional nd technical easaittees in the Foundation's organizational structure, which are: Medical, Legal, Preventive Engineering and Chemical and Toxicological. ACS Holding Symposium on Industrial Health and Safety A feature of the American Chemical Society meeting in Detroit, April 16-20, U1 be a panel on Industrial Health and Safety. Participants in the panel are: Dr. V.P. Tant, Mine Safety Appliances Co. Dr. HJ. Smyth, Jr., Mellon Institute Hr. V.R. Bradley, American Cyanamid Co. Hr. H.H. Fawcett, General Electric Co. Hr. JJI. Sterner, Eastman Kodak Co. Nr. V.A. Cook, Zurich Insurance Co. Dr. DJ). Irish, Dow Chemical Co. Or. HJH. Schrenk, Ind. Hyg. Foundation "Course & Scope of Industrial Hygiene" "Field of Chemical Hygiene" "Ind. Hyg. in Plant Location & Design "Laboratory Safety" "Plant Health Control, Medical Aspects" "Plant Health Control, Engineering Phases" "Products, Their Use and Misuse" "Air Pollution" John F. McMahon, Managing Director of the Foundation, will preside. fcvs Briefs: Dr. Schrenk will speak on Pure Air for America in a broadcast over the Columbia Broadcasting System station, WTOP, from Washington, from 3:15 to 3:30 on Saturday afternoon, April 8. He will appear on the Adventlares in Science program conducted by Watson Davis, Director of Science Service. Field studies during the past month took members of the Foundation's technical taff to a Hew Brunswick, B.C., foundry, an Idaho smelter, a glass plant in Alabama, and an asbestos operation in Georgia. John F. Knudsen has been appointed Director of the Industrial Hygiene Department, Kennecott Copper Corporation, Garfield, Utah. He succeeds R.T. Prlng, abo recently became Technical Director of the Dust and Fume Division, American weelabrator and Equipment Co. I-H-F *3uTlAL HYGIENE foundation 4400 FIFTH AVENUE PITTSBURGH (is). PA. `industrial Hygiene Digest - 28 , March, 1950 35I1. The Method of Demonstration by Micro-localization and Optical Crystalloglcal Identification of the Dust Deposits In Silicotic Tissues. J.B. Buttner and" F. DeQuervain. Ztscbr. f. Unfalined, u. Berufskrnnkh. hO 10pp. (19^7) (German). Ibis article consists of a brief description of the method of micro- Inc inerat ion and its applications In the demonstration of dust particlee in the lungs. It consists In the Incineration, In an electric oven at a constant temperature of 500 C., of frozen sections fixed to the slide vith five per cent gelatin. After "ashing" In this way for 50 minutes, all organic matter is removed and the Inorganic skeleton of the tissue with Its Impregnated dust particles can he examined with the polarizing microscope. When this has been done the ash be treated with selective chemical re* agents to remove various components, which leaves on the slide only the silica-quartz component. In this way polarization roentgenographic - analysis can be carried out at various stages. A practical example is given. -- Condensed from Bull. Hyg. 355 ypfi Tuberculosis as a Complication of Silicosis. Penna. Med. J. 53, (Jan. 1950). C.H. Marcy. A brief general paper on s ilicotuberculosls, presenting the problems in diagnosis. The sputum test Is recommended for positive diagnosis, though sometimes difficult to obtain. Malignancy, fungus Infections, pulmonary suppuration, bronchiectasis. Infectious bronchitis, and pulmonary fibrosis may be mistaken for tuberculosis. Treatment and management are the same as In simple tuberculosis. The death rate from sillcotuberculosIs Is high, and the only good preventive measure Is the elimination of dust. 356 Impairment of Pulmonary Function In Anthracoslllcosls. H.L. Motley, B. Gordon, L.P. Lang and P.A. Theodos. Arch. Ind. Hyg. & Occ. Med. 1, 133-159 (Feb. 1950). An accurate evaluation of the degree of Impairment of pulmonary func tion requires measurements of ventilation, residual air, oxygen uptake from, the air breathed, oxygen saturation of arterial blood aufl pulmonary circu lation. The vide Individual variations encountered In these determinations preclude the using of any one single measurement as satisfactory for the appraisal of disability In all types of cases. Strain on the right side of the heart as Indicated by electrocardiographic changes Is found only In cases with a significant degree of emphysema, and as the degree of emphysema. Increases, a greater Incidence of the strain Is noted. There is no apparent correlation between the roentgenographic stage of silicosis the degree of Impairment of pulmonary function in many cases. -- Condensed from Authors ' Summary and Conclus ions 357 Pulmonary Asbestos is; Anatomlcopathologic Study of a Case. A. Franchini and G. Canepa. Med, a. Lavoro. l6l (June-July, 1949) Italian. A man ho years old had worked in a factory for 22 consecutive years, applying insulating material to articles of asbestos. He never complained about respiratory disorders, and he died as the result of a streetcar accident. During the necropsy the lungs were found to be the seat of p^-rjal Hygiene Digest - 29 March, 1950 cal extensive asbestos1b. The author's direct attention to the disproportion ad" between the gross features described and the awareness of trouble. The results prove the importance of prophylactic and therapeutic treatment and economic assistance to asbestos workers generally, particularly to those vho apply insulating material. -- Condensed from Arch. Ind. Hyg, & Occ. Med. h 8 : * ' ils i pseudo-tumoral Pneumoconiosis, simulating Sllico-Tuberculosis in a Bauxite Miner. A. Germain, P. Brugere, and P. Cluzel. Bull. Acad. Nat. Med. igT" 275-276 (19^9) French. The case is reported of a nan who had been employed in mining bauxite for 20 years previous to 1956. fie then left this work to be taken on at the French Arsenal, when an x-ray of his lungs showed no abnormalities. Nine years later-the case presented a typical picture of s ilico-tuberculos is. Since the man had no exposure to dust except during the 20 years he was employed in mining bauxite, the claim is made that bauxite dust was the cause of his condition. Comment is made to the effect that a single case does not constitute proof. -- Condensed from Bull. Hyg. *59 pneumoconiosis and Tuberculosis in Dockers Dealing with Grains and Seeds. L. Dunner. Brit. J. Badiol. 22, 717-722 (DecV 19^9). igh One hundred dockers who had inhaled the dusts of grain, seeds, and chemical material were sent to a tuberculosis dispensary because of chest s trouble and were examined. Of the 100, 22 showed pneumoconiotic lesions on x-ray films, h-3 were found to be tuberculous, and 5 doubtful which of the two. Three were suffering from bronchial carcinoma. (Editor's note: There is no information on the extent of exposure or composition of the dust.) -- Condensed from Author's Summary 560 Pneumoconiosis after Exposure to Sulfur Dioxide Fumes and Dust from Coke Fires. L, Dunner, R. Hardy, and D.J.T. Bagnail. Lancet 257, 12lUl217 (Dec. 51, 19^9). mi. Pneumoconiot ic lesions have been found rad iolog ically among workers is in a group of workers whose common history was exposure to sulfur dioxide fumes and dust from coke fires. Chemical analysis of a fraction of the dust with a particle size of about two microns has revealed iron and siliceous matter. The authors' tentative conclusion is that this pulmonary ma disease arises from the sulfur dioxide or coke dust, or both. However, nt it is admitted that the evidence now at hand is not conclusive. No dust counts or gas concentrations axe given. (Discussion of the paper appears in Lancet, Jan. lh, 1950, and Dr. Dunner's reply, Feb. 11, 1950.) The Morphology of Bauxite-Fume Penumoconiosis. J.P. Wyatt and A.C.R. Biddell. Am. J. Path. 25, WM65 (May, 19^9). A description is given of the pathological characteristics found in 8ix fatal cases of this disease, together with a short description of the manufacturing process with which the disease is etiologicany connected, and notes on the history and clinical findings in each case. The disease