Document v67XgQyzNVRK069DbvewagVpR

TGG. V* XF: MG: AJO: RF rnxi Thomas G. Grumbles T 3\ A . UfM-L_ SQ?c^\ Ci-a O /v> V VISTA 0a,e ^<too s - O rv l s *VV\ i a. % /ij^'TYV Q-vvvli-C. rx_ ^ - ObC-- VVV 0000X1923 Department of Energy PETROLEUM ENGINEERING DIVISION Thames House South Millbank London SW1P4QJ Telegrams Energy London SW1 Vista Chemical Co Industrial Hygiene Product Safety PO Box 19029 HOUSTON TEXAS 77224, USA and Telephone Direct Line 01-211 RECEIVEDSwitchboard OiV^U Your reference NOV 9 *88 ISA' 80/73 4/1 Ron rtober 1988 Copy: Dear Sir A'r'---------- *---------, ACCEPTED DRILL MUDS AND BASE OILS Following the recent distribution of the revised lists of acceptable drill muds and base oils, please note that the covering letter is in error. The products required to be re--tested after 3 years from the date of the original analysis are, in fact, only mud systems and not base oils. Please accept my apologies for any inconvenience this may have caused you. Yours faithfully Janet Abbott VVV oooon^29