Document KRmmorRnr92wdgjK4Dv340246

FILE NAME Industrial Hygiene Foundation IHF DATE 1949 Aug DOC IHF052 DOCUMENT DESCRIPTION Industrial Hygiene Digest - Abstract Section dustrial Hygiene Digest 15 a ra August 1949 However great care should be taken to exclude the tuberculous in select- -_ Ping persontso receive aluminum therapy 4 It is not believed that = scientifically controlled experiment in industry is feasible for the ...- evaluation of aluminum for the prophylaxis of silicosis This follows _ from the uncontrollable variables inherent in the industrial situation and - it other factors which have been discussed For these reasons appears under- - = improbable that any research agency would consider it advisable to under- take such a project except under special conditions already discussed and | which may not be attainable 5 The McIntyre Research Foundation as presently organized is not equipped to solve the aluminum prophylaxis accom- problem in relation to silicosis The steps considered necessary to accom- plish this objective are outlined 6 Research should be continued with laboratory animals with the object of finding a more adequate basis for application to man Such study is now included in the program of the . Saranac Laboratory of the Trudeau Foundation - -- Authors Summary 66 Effects of Electricity on the Human Body W.B. Kouwenhoven ~ _ , oe Ind Med 18 269 July 1949 Be The author discusses briefly the various effects of electricity on ~ the body including variations with the amount of current The current |. -. values of interest are 1 threshold of feeling about 1 milliampere 2 let current above whiciht is difficult to let go of wire . about 9 milliamperes for men 6 for women 3 current producing ventri- cular fibrillation 0.1 ampere 4 current producing a block in the ner- vous system one ampere or more and 5 the counter shock current The - - last three result in death if prolonged otherwise artificial respiration may save the victim These effects refer to alternating currenotf com- mercial frequency Direct current is much less harmful The only effect , of frequency currents is heating 367 Asbestosis and Cancer of the Lung Editorial J.A.M.A. 140 1219-1220 Aug. 13 1949 oe 7 - Records of English American and German physicians and The Annual that Report of the Chief Inspector of Factories in England for 1947 show that the occurrence of cancer of the lung is related to pulmonary asbestosis . This rate high relation is supported by the following observations 1 The incidence the of cancer of lungs in asbestosis patients is 10 to 15 times as | as among the general population The female ratio is more DEPOSITION 4 nearly equal than is is for the general population which indicated that . DEPOSITION C an environmental and evidently occupational carcinogen equa tol eqi uaz lio zo DEPOSITION EXHIBIT the incidence rate of cancer of the lungo for both sexes Recent experl- experl- DEPOSITION - mental observations support this interpretation of clinical evidence DEPOSITION | 368 Changes in the Lungs Produced by Natural Graphite H.E. Harding and G.B. Oliver Brit J. Ind Med 6 91-99 April 1949 . description A brief is given the industrial uses of natural graphite which is a crystalline carbon mixed with up to 10 of free silica and with other minerals The greatest dust risk occurs in the grinding of natural thin graphite for which evidence is presented to show that can leul |