Document MJd51jwG0EbqeN96zwD6q1zMy

FILE NAME Talc TALC DATE 1979 May 30 DOC TALC490 DOCUMENT DESCRIPTION Naval Memo RE Asbestos Content in Certain Materials , | a _ es 6101C 9631 | ; ee, a ors Ser 35 me From: Commander Naval Ses Systems Command . To Commander Mare Island Neval ShipyardShipyard 30 MAY 1979 Subj Asbestos Content of Magnesium Silicate Raw Materials Used in Manu- facture of MIL 24441 Epoxy Coatings age : Ref a . NAVSEC Project OrderN6519779P090020 re NAVSHIPYD Mare Nytal 1. It is requested that Mare Island Naval Shipyard 2 marc evaluatemagnesium silicate from oo. oo R. T.Vanderbilt Co. 300 if Pigments & Co Pfizer Minerals * Cyprus Mistion - . Desert Minerals Talc Co. : CP 20-30 ' 139 Fine 80 oo, So Be . oa rl content determine asbestos fiber to ee present identified also is asbestos tremolite major Although 2. the mineral fiber in other min- oral fibers are chrysolite ampsite erocidolite anthoplylite and actino- liteThese fibers are to be if reported : and | tremolite along with magnesium silicate pigments paragraph shall of 1 3. The one also be evaluated physically and chemically In particular oil absorption should be determined and compared to the material used to make reformulated MIL - 24441 materials i.e. Pfizer Cp 20-30 magnesium silicate a heathe effort is within the scope of funding of reference a : agrtonnan ss we att Cp ANDERSON directive < | 7 nee By By a - Te are Blind copy to 5 NAVSEA 6101E - 6159C 921TH3 Prepared by John J. 05D21 Typed by L. Sendejo Hager May 1979 _ oe, ee eee tee epee ee ee eres oP Abtinen bere a eee mee eee Heo B 109398 omen 5 rer emmepitepanngtet 5 I ga LSA eM 000156