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FILE NAME Industrial Hygiene Foundation IHF DATE 1941 Sept DOC IHF031 DOCUMENT DESCRIPTION Digest of Industrial Hygiene  :.September 1941 Industrial Hygiene Foundation 4400 Fifth Avenue Pittsburgh Pa DIGEST OF INDUSTRIAL HYGIENE Developments News Items . 696 American Conference on Industrial Health Meets November 5 and 6 Under the auspices of the American Association of Industrial Physicians and Surgeons the American Conference on Industrial Health will hold its Second Annual Meeting on November 5 and 6 at Chicago Towers Chicago The opening session will be a symposium on the technical problems of industrial health on the basis that health supervision in industry involves two great principles 1 the adjustment of the working environment to the employee and 2 the ad- justment of the employee to the working environment including also the human environment The technical problems are the resulotf the application of these principles and run the whole gamut of public health as applied to industry The afternoon session will be a symposium on the economics of industrial health including 1 organization and cost of a health service and 2 discussion on the value of industrial health service to the employer the employco and the public The morning of the second day will be given over to a symposium on the social implications of industrial health discussing how far en industrial health service should go are hospital and medical care plans related to industrial health service in any practical way does legislation play a part in this problem and the evaluation of labor turnover spoilage and lack of trained men together with the experiences of management and the interests of insurance carriers in the medical and social problems presented 697 Special Course in Industrial Hygiene Offered at University of Pennsylvania In order to provide trained industrial hygienists to most the needs of expanding health and safety services in the defense industrics the University of Pennsyl- vania offers a course of instruction of twelve weeks duration in Industrial Hygieno The course will be given under the auspices of the Engineering Scionce and Management Defense Training Program of the U.S. Office of Education and is open to graduates in engineering chemistry or allied sciences Subjects covered in the course include Principles of industrial hygiene industrial hygione laboratory methods industrial ventilation safety ongincor- _ ing administration of industrial health services industrial psychology and statistical methods Presentation of the course is contingent upon the en- rollment of a satisfactory number of students which will run from October 27 1941 to Januar1y7 1942 Applications for admission to the course should be addressed to Theodore Hatch Associate Professor of Industrial Hygiono Department of Public Health and Preventive Medicine University of Pennsylvania. Philadelphia Pennsylvania pe Industrial Hygiene - 6 Silicium Silicates Silicosis W. Giese Klin Wehnschr 19 558-560 1940 German Rabbits were injected intravenously with finely ground silicate dusts clay feldspar sericite Deposits of the dust were found in the spleon livor end lymph glands but no increase in fibrous tissue Opal amorphous silicic acid was also injected and the results were large deposits of dust with many giant ' cells but no fibrous tissue Opal is more soluble than quartz therefore the conclusion is made that the dissolved silicic acid is not the producing substance alone Quartz is the only substance producing silicosis Dust taken from markedly silicotic lungs was also injected and this again produced silico- cis A decrease in the amount of the injected dust could not be found The author was able to show the formation of a covering characteristic of asbesto- sis bodios by foldspar soricit aned also opal but in the smallest particles k- only in the cellules He concludes that dissolved silicic acid but not tho quartz may produce this covering Quartz shows no morphologically demonstrable appearance of dissolution in the tissue the dust deposited in callosities re- tains its fibrous producing effect Pulmonary Cancer Produced by Asbestos Dust in Experimental Animals M. Nordmann . > and A. Sorge Zeitschr f Krebsforsch 51 163-182 1941 German Experimental work with mice inhaling asbestos dust over a period of from 47 to 90 days for 3-1 to 5 hours a day produced asbestosis bodies and prnounced de- groes of diffuse fibrosis after the 20th week Proliferation of the bronchial epithelium was found such hyperplasia encroaching on neighboring alveoli This was followed by a metaplasia to pavement opithelium with cornification which later seemed to be a transition to malignant ncoplasm The first developed carcinoma was found after 240 days By this time only 10 of the mice had sur- vived and 2 carcinomas were found among them In the first series 33 of 50 mice lived longer than 6 weeks 14 showed abnormal growth of the opithelium 5 metaplasia and cancer In the second series 28 of 50 lived more than 6 weeks 16 showed abnormal growth 5 motaplasia and cornifying cancer 1712 A Case of Pulmonary Asbestosis Accompanied by Tuberculosis H. Hannesson Tubercle 22 40-44 February 1941 During the period 1933-1939 inclusivo . there wore 90 known deaths in Great Britain of which 32 were associated with tuberculosis from This asbestosis reports the case of 44 year old man who had been an asbestos blower supplying the material to a cleaning machine Although supplied with a respirator he had never worn it He was thin tions over wide areas had a high temperature emphysema and bilateral crepita-. Clubbing of the fingers was marked and the sputum con- tained both asbestosis bodies and tubercle bacilli The roentgenogram showed widespread progressive nodular tuberculous infiltration with cavitation in all zones of the right lung fields and in the upper and zones of the left lung fields The right dome of the diaphragm was elevated There was no radio- graphic evidence of pneumoconiosis A diagnosis of asbestosis and tuberculosis was made The patient died within a month of spontaneous pneumothorax Pulmon- ary findings showed both to have extensive caseous tuberculosis with cavi- tation macroscopically they wore like those of pure tuberculosis Microscopic- ally there was revealed escous tuberculos wiitsh many tubercle typical reticular fibrosis of asbestosis with thickened pleura bacilli and There is a dis- cussion of the diagnosis of the pure and complicated disenso Foundation's Sixth Annual Meeting Pittsburgh Nov. 12-13