Document yobk7aL20EQd3Y2wxwaJ5qJ3

FILE NAME: Hercules Chemical (HERC) DATE: 1954 DOC#: HERC003 DOCUMENT DESCRIPTION: Student Manual of Industrial Medicine STUDENT MANUAL of 1I11U3IB1AL MXDIOIHX by Lemuel 0. jMcGee,-Ph.D., M.D. Medical Director, Hercules Powder Co. Wilmington, Delaware Attending Chief, Medical Division, Delaware Hoepital, Wilmington, Delaware ' Tisiting Professor of Industrial Medicine =i School of Medicine, University of Pennsylvania Philadelphia Pennsylvania X Second Xdition, Bevised 195^ WTMWHfcl ,,..m IC liic jJ Libmx W/) 400 \ %5 \ Copyright 19i>0 and 195U Lemuel C McGee, Ph.D., MD First Edition, January 19!?0 Second Edition, January 19i>U m i n t a t vith.ut reported hara. It. t a l t a i S S . l f S S S u c*tic changes have appeared in the lungs, is unproved. 6) Chief occupational hazards for silicosis:8! a. Mining of hard siliceous rock (copper, gold, silver, zinc, iron and hard coal) 6 h. Quarrying of granite, sandstone, quartz, slate rock, and crystal c. Ceramic industries - pottery making d. Class manufacturing . Abrasives f. Stone-finishing g. Construction work (tubes, tunnels, aqueducts, etc.) c. Asbestosis WhlCh re8ult8 from th* inhalation of asbestos fibers is due chiefly to the mechanical plugging of the biiriJ * i? f<,rmatl<ni of E r o t i c sleeves alon^ the terminal Th*vc#*diti#11 ^ s been noted in workers mining and v o r k e r ^ s o ^ o . S ^ r i ** 1940 Gardner 8tated that & Pr cent of Z Z r.' J TM ^ lung changes In those with more than 1$ ^ 08?^e the Percentage rose to 60.83 The characteristic x-ray^ inding is the so-called "ground glass" appearance which differs from the nodular pattern of silicosis. Lynch and Cannon88 described the characteristic lesion in *0 i s w ! i e^ ^ 8e! , ^ ** "asbestosis body" consisting of a central branch?!^ coating, found in terminal 4 Peribronchial lymph nodes. Some of these bodies may Pl ^ r l l ihJ v T feature of the disease in advanced fora was pleural thickening with some adhesive obliteration of the pleural paces. In 8 cases there was nodular fibrosis of the lungs, in 6 lung. f0rm f active Pulmonary tuberculosis, and in 3 carcinoma of the rat!8i w 8!9 ^ t8d that P8tmrtem reports from the literature indi- 3 9 f 888 asbestosis there were h k lung carcinomas u tfii 2'2 \ Ca888 9f 8illc88i8 32 carcinomas were fC P^ 8Bary tuberculosis is less often associated with asbestosis than it is with silicosis. 52