Document EqOJ68Dy5w6dnrD8JkwmgbX8n
FILE NAME: RT Vanderbilt (RTV)
DATE: 1971 July 21
DOC#: RTV 146 DOCUMENT DESCRIPTION: Letter to Desert Minerals from American Conference of Govt Industrial Hygienists RE TLV of Talc with Notes
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AMERICAN CONFgRHNCS . of
GOVSRWMENTAl INDUSTRIAL HYOISNISTS
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July 21, 1971
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Mr* Thomas'B. Rammers " Vice President *Sales Desert Minerals, lac. . American Mineral Company
1891 South Coast Highway Laguna Beach, California 92651
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Dear Hr* Hammers} :
Tour letter directed to the Secretary-Treasurer of the ACGXH has been referred to the undersigned for reply*
The threshold ''indt value of 20 rappcf for TALC has been retained in the
forthcoming 1971 TLV List, if the`talc is non-asbestlformp however, if the talc is of the fibrous-tremolite type, then a more stringent TLV of 5 fibers/ml > 5 p'< in length is the standard, as.noted in the accom panying documentation for fibrous"talc.
Sineerely yours,
Enclosure
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Herbert E. Stokinger, Chairman, TLV Committee'
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