Document 7XywkgkdJy4Gqk9kjNmQB8RB

FILE NAME: Union Carbide (UC) DATE: 1972 DOC#: UC374 DOCUMENT DESCRIPTION: Asbestos Information Sent to Customers, Untitled ,, T , <iQ7n ^vrinaent Federal regulations went into nss it asbestos. The pact of t i l t T regulations on the drilling industry has been a source ofconcern and confusion to suppliers and users, alike. i r a e r " S r t ' o ? o S f u n d the idol, S ^ ' S n a l t i o n . found - s^ S 9o r f l baa. now . -- pieted. Mtaohed is a copy of " r* S l6V i i f X S S r based on a desire to evaluate F r a i l E r b of^"LSSS9^S:SL?S3S;9 levels. ( w,, believe interested readers will find this report in formative. On the next page, we've recapped the raoy tormauive. Y .h .-a. includes. In substance, the iraP ^ f Lad"us to b 2 i l l e that there is no reasonable Granular Super Vilbestos. We'll be glad to answer any questions you may have. o p us agine or call our Sand Springs^office. Just Respectfully presented MNTELM, INC A f \ ... - Kenneth'>i-' Campbell KNC/jd "^ m ;=3 \ ABS-028799 a study covering airborne dust concentrations in drilling fluid operations using wet-refiped asbestos has been com pleted. The following are some of the more important points to consider: 1 All tests were performed using Montello's exclusive Set processed afbestos products. The findings cannot _ be safely applied to any of the several dry ground pro ducts on the market. 2 Fiber counts were highest on fine ground material S d lowest on granular material, with coarsely ground (crushed) material falling between these two. 3 Crushed Super visbestos, which has been used in the fiild for several years, consistently fell well below the OSKA regulations as to maximum ceiling . m n t ana 8 hour, time weighted average, (TWA). 4. New Granular Super Visbestos, now available in the field at no extra cost, proved to be from 20% to 50% cleaner than Crushed Super visbestos. - 5. Neither form of Super Visbestos exceeded even the much more stringent TWA level which will become effective in 1976. 6 Based on this test series. Super Visbestos m either - form offers a safety margin of 5 to 1 or more, m complying with the limits set by the regulations. Therefore, we believe there is no reasonable expec tation of exceeding the legal limits, when using Crushed or New Granular Super Visbestos. AES-oaaaoo