Document ba8V9w81bBG1YBeqaEXj33Qm3

Monsanto Medical, A2SA June 10, 1974 EVC1 - | cc TO PILE Product - EVC1 copolymers - Residual monomer content (as drummed) - 400 to 2500 ppm - VCM in vapor space in sealed containers - 600 to 30,000 ppm Personnel Assigned to dept.-total - 29 tank car unloaders - 50 (infrequent exposure) instrument men - 44 (infrequent exposure) Earlier VCM production - (1952-1968) 4l (37 plus 3-4 reg, assigned maint.) Medical Status Liver function studies have been done on all of the above currently employed. One individual has been found who probably has liver disease which we believe is unrelated to VCM exposure. Epidemiological Data The TCA study included 84 individuals who had at least one-year work experience with VCM (but did not include the EVC1 workers). This included those presently working; 5 employees who were deceased; 2 who had leftj 8 retirees; and 3 unaccounted for. No deaths from cancer of the liver were found. Current levels of exposure Generally below 5 ppm with most samples near 1 ppm. Where levels could exceed 50 ppm, workers are wearing supplied air respirators. A>kp Wheeler RSV 0005437