Document peYMDYjzEgvG5XL4dqyGV3ao6

FILE NAME: Eagle-Picher (EP) DATE: 1970 July 20 DOC#: EP019 DOCUMENT DESCRIPTION: Letter to EP from Mt. Sinai School of Medicine ( xw'Bir ' T MOUNT SINAI S C H O O L OF M E D I C I N E ' of The City University of New York F I F T H A V E N U E A N D 18TH S T R E E T - N E W Y O R K , N.Y. S8839 Ekfvtrtmtnl o j Community Jlttdicint r ,//j - /7 / ,4 ./// . C7 {' v-V'vJ * Mr..- w. ?. /Atteberry President Eagle-Picher Industries, American Building Ciscirfnati, Ohio 45202% / Dear r,, Atteberry: Inc. ' * ` July 20, 1970 Studies of health hazards in the insulation industry by our industrial hygiene engineers have identified a number of trade conditions of particular importance. Among these has been dust exposure associated with the use of asbestos cements, Considering the question, it appeared that this exposure could be considerably reduced by eliminating the open mixing of the cement in troughs, etc. Studies Indicate that this is so. For example, . dust counts (optical microscopy) gave the following typical mix levels with asbestos cement use: Open mixing Mixing within plastic bag Operation , (fibors/ml) (fibera/my Mixing hydraulic cement (range) 46-77 .V 7.& Kan-hydraulic 10.0 4.4 cement It is evident that fiber levels at the worksite can be reduced by mix ing cements within the bag, by one-half or teven nine-tenths. Y/e therefore propose that this type of packaging would be a useful . one end suggest that your company should consider market lug as>bes>to5 cement products in plastic or other suitable bugs or containers, that would permit enclosed mixing. She Johns-Manvilie Company has found an 8-all polyethylene beg designed for valve filling with conventional valve bag* packing equipment suitable for this purpose and, 1 understand, plan to market cement in such bags shortly. 1 am sure that similar bags could be obtained from other bag rnaaufacturers. " t m om Mr* W. P. Atteberry 2 . 8 July 20, Under separata cover, X a- sending you a sample of the bag JohnsKanvillo intends to use. Should you find that we can be of assistance to you in any way, or that we might provide additional information, please call on us. . . . , ' -- US: jlr Enc. " bag cc: Mr. A. E. Hutchinson Sincerely'yours, 9* .C\ Irving J. SelikofitL'k.D. Professor Director, Insulation Induct Hygiene Eesearch Program