Document 3NKx2bjn5R3bX5R40Z9RJr1o3

u ul 0 2 5 Sprayed Mineral Fiber Manufacturers Association, Inc. SUITE 2500, ONE WALL STREET, NEW YORK, N. Y. 10005 ?. VeXHALEN. ?*6JIDNT L'aued Suit* Minem ?foUucu Company a. . SINGE*. Vice P*ej:oent Sauin a )Ciier Company /. H. WJ7TKO?. ScciCTAtr Inc. H. L. LEVIN'S, T*fAJU*f* AiMKOtpray Corporation January 5, 1967 Mr. C-eorge Sherman, Chief Division of Industrial Safety Department of Industrial Relations 3^50 Wilshire Boulevard Dos Angeles, California $0005 Gentlemen: The Sprayed Mineral Fiber Manufacturers Association has been advised that a notice was issued by the Department of Industrial Safety to Safety Engineers, outlining procedures to follow in the application of sprayed fireproofing materials which contain asbestos. A copy of this inter communication, dated September 21, 1966, on the subject: "Application of Fireproofing", was sent to the Los Angeles Building and Trades Council, it being understood to have resulted from an "investigation" which they requested. On September 29, i960, the Los Angeles Building and Trades Council issued a Bulletin to Business Representatives, Affiliated Local Unions and Craft Councils, quoting the inter communication and elaborating further upon the potential health hazard that may exist. Since all members of the Sprayed Mineral Fiber Manufacturers Association issue detailed instructions to their contractors recommend ing the use of suitable protective masks by workmen directly involved in the sprayed fireproofing operation, statements concerning this are not questioned. We should like to inquire, however, concerning the extent of the investigation and the data developed which prompt the cautions that "all other workmen should be kept out of the spraying area, and "As soon as the spraying is completed, require the area to be cleaned up thoroughly before it dries out." We should like to point out that the Hygienic Guides Series on Asbestos, promulgated by the American Industrial Hygiene Asso ciation, establishes the Threshold Limit Value at 5*0 million parts per cubic foot* which represents conditions under which it is believed that nearly all workers may be repeatedly exposed day after day through a lifetime of work without adverse effect. We understand that the Federal Government and most State Agencies have accepted this recommended maximum atmospheric concentration. Mr. George Sherman 2 January 5, 1957 To our knowledge, the only extensive testing done by a .V; State Agency was* performed recently by the Division of Safety anfi > ^giene of the Industrial ^Commission of Ohio., and a copy of their. report dated. June 21, 1955 is enclosed. This report concluded that**-' the exposure to other workers is well below the Threshold Unit Valu' *' . i" " " ' *.. ` ' . Because unnecessary cautions, which cause undue alarm, can create a hardship for. our industry, and because we -are concerned to ' know that adequate cautions are properly stated in order to protect " the interests of the members of our industry, we will very cuch .i$:' appreciate receiving more detailed information 'on the investigation1- and the data developed from it. * Very sincerely, SPBAYED MINERAL FX3ER MANUEACTTiEERS ASSCCIATIO: JPV/deo Enc. By. J. ?. Vernalen. President cc: Mr. J. A. Cinquenini, Executive Secretary Los Angeles Building and Construction Trades Council 1526 Beverly Boulevard Los Angeles, California 90025 cc: Mr. V. C. Mathis, Assistant to Executive Secretary Los Angeles Building and Construction Trades Council cc: Mr. Ernest B. Vebb, Chief Department of Industrial.Relations 340 Wilshire Boulevard Los Angeles, California 90005