Document MG3dwOnJE1qx23Kr7Bv6ompGz

FILE NAME: RT Vanderbilt (RTV) DATE: 1972 Apr 27 DOC#: RTV313 DOCUMENT DESCRIPTION: Letter RE WESTAL 303 from RTV c April 27, * Mfc. 57 if. Stfcter, ML#, of Purcbwee Gtiiiings&8asin90irtaiciti Bern Hr. 3tM sri WgStAL 303 - TQgR COOS BK-SHfl In answer to year question regarding the troBolito outwit o f the bom v&geral product, i t has boon datoralR* ed that <8131 proportion - in the aocniQt o f l or 2$ - co n sist* o f the mJoMol'-ttwSoilte.1' Wo b o lio n , homotor, that the structural for* of the tronoiitA to bo Ibuod in our product is auofa that i t do aot fa ll into the catogorp of eehestos, as th *t torn i s used in rarious regulations dealing with occupation*! aefety wd hoalth. Whoreoo actstoo i s doocrlbod aa a fibreat ninoral silic a te , tho structural fora of tho txeja&lite found 1 tho bore product io charseteriaad by a Mixture of nodule, rods, pl&tee and needles. Tho sn ail fraction of tran oiit* found in our product i s the noodle fora le not soft, thread lik e and o f high tensile strength, nueh as in tho case.of asbestos, but rattier ie b r ittle , fragile, and of low tonsils strength. i t present, i t io our b e lie f that the ttstan ee o f t r e s e lite in our product does oot con stitute a Mineral dust exposure hasard greater than that o f ooo~eeb*atitem ta lc , for which the Threshold l i c i t Value baa been esttiblisbed a t" SO sppef. Very tru ly yours, a , T. VUiCSKBILT CCMFAHI, ISC. 3. V. Howard, Manager ?aj.nt-pBper Dept. CC* MESSRS. A. K. HARES! J . F. HcCMlim ", " O ' .;.'>!?=rno*5, f T - S T - '/ICHj , . 0003*0 /'R 2S *972 FS024434