Labeling of Health Risk in Industrial Settings

In January 1974 a Louisville, Kentucky chemical company announced that a link had been found between angiosarcoma and exposure to vinyl chloride. A program of medical screening identified "at risk" workers, some of whom were reassigned to an alternative work setting, a wood pallet plant. Twenty-four "high risk" pallet plant workers (PP) were matched with an equal number of workers with some abnormal test results (TP) and normal results (TN)....