Document R20NE6Mw1Mrn8Dy7roekGXk5E

FILE NAME Industrial Hygiene Foundation IHF DATE 1949 Aug DOC IHF052 DOCUMENT DESCRIPTION Industrial Hygiene Digest - Abstract Section dustrial Hygiene Digest 15 August 1949 ! However great care should be taken to exclude the tuberculous in select- to Ping receirev ceie ve aluminum therapy 4 It is not believed that . | scientifically controlled experiment in industry is feasible for the . ... evaluation of aluminu fomr the prophylaxis of silicosis This follows _ from the uncontrollable variables inherent in the industrial situation andit other factors which have been discussed For these reasons appears ' improbable that any research agency would consider it advisablteo 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 aa 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 studiys now included in the program of the . Saranac Laboratory of the Trudeau Foundation - -- Authora Summary Effects W.B. 66 of Electricity on the Human Body = Kouwenhoven - , a Ind Med 18 269 July 1949 The author discusses briefly the various effects of electricitoyn 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 whiic t h is difficult to let go of a 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 have 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 re 67 Asbestosis and of Can^er the Lung Editorial J.A.M.A. 140 1219-1220 Aug. 13 1949 awe : , _ Records of English American and German physicians and The Annual .__ Report of the Chief Inspector of Factories in England for 1947 show - that the occurrence of cancer of the lung la related to pulmonary asbestosis incidence This relation is supported by the following observatio1 ns The incidence rate of cancer of the lungs in asbestosis patients is 10 to 15 times as high as among the general population The female ratio is more . nearly equal tha it n is for the general population which indicates that . an envirano d en vidm ente ly n occt upaa tiol nal carcinogen oqua toloqi uaz lia za the incidence rate of cancer of the lungs for both sexes Recent experiexp-eri- ~ mental observations support this interpretation of clinical evidence DEPOSITNEXHIBT - T Boundry 368 Changes in the Lungs Produced by Natural Graphite H.E. Harding and _ A brief description is given the industrusiesaolf natural graphite which is a crystalline carbon mixed with up to 10 of free silica and with other minerals The greatest dust risk occure in the grinding of natural graphite for which evidence io premented premetno tsehodw that thin can l tl o |