Document dwvqLnJOg3p54b3Lp5EZyXOe

ihty' CHEMICALS INDUSTRIES TO FROM J. A. Clapperton H. J. Hoenes INTEROFFICE / LAKE CHARLES DATE SUBJECT October 21, 1974 Chlorinated Hydrocarbons Monitoring In order to eliminate present confusion concerning respiratory equipment in use during personnel monitoring, the following code will be used on weekly summary sheets issued subsequent to this memo. (IT) - No Respiratory Protection (C) - Custom Comfo Mask (A) - Airline Mask (S) - Scott Air-Pak HJH:rw cc: Zeb Bell Lee Grant, M.D. F. Dehn D. L. Duncan yH. B. Lovejoy, M.D. T. Taylor R. Iynch^ G. Work G. Bedenbaugh J. Lafleur C. P. LeBlanc M. Wood