Document YyvNnawEYYqnZ9ez3NNr1r5K

PLAINTIFF'S EXHIBIT DTJP-842 6, I'j?2 G. L. Mciteili ..luoiiL-iJilculu uupartiuciiu t iu Ui/tuli i'ltUj t 0065 Threshold Lijnit Value Tor Asbestos Enclosed in copy of the item that I referred to in our tolepliono conversation of 2/lhf(2 concerninK tlic ioueviri^ m' the threshold limit value For nrsbentos xrej; S to 2 1`ibcra/nit. it' Chin ciuui^c is npprovod, the onerntlom at a LI plants would have to be rcviewan very clone.ly. Tuo *ifcort tost vou u.i/c o'.tU '/our existing system will definitely prove beneficial. After suss thought on this new proposal., it seems additional recovu keeping appeal's necessary. The data can probably be obtained through the workers or the foreman. What is needed Is the time spent on specif1r operation/; where ecoestoe ia used. 1'hir vaLla include the tirue in the shop spent cutting and preforming, the covering of pipes in the field , and the tearing out of old asbestos insulation. This information should be obtained on each worker to determine if any one man might be doing more of one operation that has a greater potential problem than the other Jobs. For the i.--.:rk that is not adaptable for local exhaust ventilation and exposure to asbestos fibers is evident, the use of U.8. tfureau of Mines approved respiratory protection is necessary. Information of thin type will be essential in complying with the present standard and will definitely be needed If the proposal tg accepted. .)KN.itAl idCNfcU Bf tiAKU J liUBIAK nici'.r d J. lMbl.dk Industrial Hygienist RJH/neh knclosiu'w DUP I HI592 DU 059074