Document N2ON1zndbR6GV72GrDMnBDnpE

FILE NAME Talc TALC DATE 1971 Sept 8 DOC TALC424 DOCUMENT DESCRIPTION Letter to American Conference of Govt Industrial Hygienists from Desert Minerals Inc. weed Septembe8r 1971 Mr. Herbert E. Stokinger Ph.D. - Chairman TLV Committee American Conference of Governmental 1014 Broadway Ohio - 45202 Cincinnati Industrial Hygienists ma Dear Mr. Stokinger 1971 . Underthe date of July 21 you addressed our Mr. Thomas E. Remmersa of Laborpublished paragraph letter in regard to the threshold limit value for tale under the Occupational 1970. . , Safety and Health Act ofasbetiform | You refer to a value of 20 mppcf for tale if / the talc is asbestiform however if the tale is of the tremolite type thenthe TLY of five fibers or less than fivemilligrams in length in a . the standard Youenclosedcopy of the Documentation of Talc fibrous / tremolite our This appears to arecommendation rather than a part of the law not our intention to question thisbut we would like .to know whether this designation fortaletremolite is now a part of the Act and : so has the it andunder what or Department . documentation number . specifications Paragraph Rules Regulations 1910.100 1910.100of the and states that of | Sos the American Conferenceof Governmental Industrial Hygienists have beer that of the standardsmay beobtained referenced in thissubpartand copies | . from you | Specifically referencemade the variousmines under G 1910.93 1910.93 Page10,506 In this table the only reference Paragraph Table All wantto knowisshould this regulation include vo. types: of talc yourefer to and their Inorder thatwe may be more intelligent inourdiscussions : of thismatteirt wouldbe helpful : ifyouwouldtell us more abouttheeae American Conferenceof Governmental IndustrialHygienistsandhowyou operate kindly ; Thanking you for your help we remain y r Yours very truly DESERT MINERALS Inc. - EJEllsworth kjb President . oe CRMC000107