Document K6xxyqKkwnwEe05b5nMj8Mwr0

REFERENCES 1. Murray, H. M. , 1907 Report of the Departmental Committee on Compensation for Industrial Diseases, HMSO, London, Eng. 2. Lynch, K. M. and W. A. Smith, Pulmonary Asbestosis III: Carcinoma of Lung in Asbesto-Silicosis, Am. J. Cancer 24: 56-64, May, 1935. 3. Wagner, J. C. , Some Pathological Aspects of Asbestosis in the Union of South Africa in Proceedings of the Pneumoconiosis Conference, Johannesburg, 1959. A. J. Arenstein, Ed. , J. 8i A. Churchill, Ltd. London, Eng. (I960). 4. Sluis-Cremer, G.K. , Asbestosis in South Africa-Certain Geograph ical and Environmental Considerations in Biological Effects of Asbestos. Annals of the New York Acad, of Science, 132: Art. 1, p. 215-234 (Dec. 31, 1965). 5. Thomson, J. G. , Asbestos and the Urban Dweller, Annals of the New York Acad, of Science, 132: 196-214 (Dec. 31, 1965). 6. Gross, P, , L. J. Cralley and R. T. P, deTreville: Asbestos Bodies, Their Non-Specificity, m. Ind. Hyg. Assn. J. , 2j): 541-542 (Nov. Dec. 1967). 7. Gross, P. , R. T. P. deTreville, L. J. Cralley, andJ.M.G. Davis, Pulmonary Ferruginous Bodies: 1. Their Development in Response to Filamentous Dusts. 2. A Method of Isolating and Concentrating Them, Arch. Path. 85: 539-46 (May. 1968). 8. Knox, J. F. , R. S. Doll and I. D. Hill; Cohort Analysis of Changes in Incidence of Bronchial Carcinoma in a Textile Asbestos Factory. Annals of New York Acad, of Sci. 132: 526-535 (Dec. 1965). DISCUSSION FROM THE AUDIENCE: I assume the dust counts have been collected with impinger, and microscopically counted? 1 DR. GOODMAN: We have used a new Bausch Lomb electronic instru ment. We have tried to correlate the Bausch & Lomb with the impinger method, but there seemed to be difficulty. The accuracy of the impinger method is only 10 to 15 percent plus or minus, with two people doing the counting: whereas the Bausch &i Lomb instrument gives more consistent results by eliminating the human element. FROM THE AUDIENCE: The dust count is much higher with the Bausch & Lomb: is there a correlation? DR. CRALLEY: The correlation is made on the same type of dust eval uation that was made in the early 1930's so it did have an internal com parative value, though we do not know what the counts mean precisely. An interesting side comment: this is one of the plants that ,01 133 4400 50.