A cohort mortality study of four plants of the Allied Corporation

A historical cohort mortality study of Allied production workers at four plants who were employed between 1955 and 1961 for at least one year was conducted. This study was undertaken to determine whether mortality patterns in production facilities were similar to those of a separately studied group of research laboratory personnel working with similar materials. White male production workers from all plants combined experienced lower mortality for all causes of death combined than would be expected on the basis of the US population. Cancer of the rectum was significantly elevated among white males and cancer of the stomach was significantly elevated among black males at one plant. There were significant deficits among all white males for nonmalignant digestive system diseases and all external causes of death.