In 1976, Equitable Environmental Health Inc. completed a study of mortality in 577 men who had been employed for at least six months in jobs involving exposure to lead chromate. In one of the three participating plants it was known that there had also been exposures to zinc chromate. Analysis of the 52 deaths that occurred gave inconclusive results. The 20 deaths in the plants where it was believed that only lead chromate was involved were too few for meaningful analysis. There were 32 deaths in the plant with known mixed exposures, which also involved an older population. Although there was an apparent excess of deaths from respiratory tract cancer and from cancer of the digestive system, the elevated standardized mortality ratios for these causes were not statistically significant at the 5% confidence level.