In previous report, all workers exposed to epichlorohydrin (ECH) for more than one quarter before January 1, 1966 at Shell production facilities at Norco and Deer Park were studied for excess mortality. Vital status was determined as of December 31, 1975, for all but 15 of 864 males identified as members of the study group, and subsequent analysis combined with animal evidence as to the carcinogenic potential of ECH suggested a possible carcinogenic risk for men associated with ECH exposure. Due to the size of the cohort and the relatively short period of follow-up for most of the men in the study group, the number of deaths was small and further follow-up of this cohort and epidemiologic investigations of other ECH exposed populations was urged.