Document qk1zgOJY3ge7rrXb8VagqqB0E

w' * . .. rju* IV' ; *.- *v.:' > %.:"'. ,':<- .:'..?->"':,'.''-f.- ,.: :\ ' .* .... v ' Y.*-.*' *. ... . -. . ' . * ;,' . .. . >; Jtnoaiy 15, 1959 Medical Department Bureau of '-arkaen's Compensation Columbus 15, Ohio Re> 0. D. 987l9 ) . 0* D. 106150 ) . 0. 0. 106151 ) 0,; d, 106152 ) 0. D. 6887-22) Jane 0. Ceetory Gentleman* The abore numbered claims have been referred to this Division for a further state ment relative to the claimant'a exposure to silica dost. According to a letter by william L. Wilson, Occupational Hygiene and Hedlcal Services, the claimant had a total of approximately 26 years employment with .the loungetown 3ieet and Tube Company in which he was exposed to dust ranging fro* 2 to 20 nillion particles per cubic foot of air and containing a high percentage of free silica* According to 0* D* 106151 filed against the Koppers Co., Inc., the claimant worked lining blast furnaces and open hearths, using fire brick, from 19li7 intermittently through January 1952* Experience of this Division indicates that he would also be exposed from 2 to 20 Million particles of dust per cubic foot of air and this dust, would contain up to 3$f flree silica*. : The statement appears in the inter-office communication fro Harry L. HoiCocver in 0. C. 106151 that the claimant's last "work, was in construction work whero building brick were used and that no exposure to silica dust whatsoever took place in such ' .I'o.-Cfd by the Industrial Commission, there appears to bo no lr>nrin re t ion with construction work using building brick. Very truly youro. DeWltt Huffman Industrial 'Hygiene Engineer SC-BE-03000