 Nonwhite workers also experienced higher proportionate mortality ratios than their white counterparts with regards to deaths from all cancers, and deaths from accidents, suicide, or homicide.White workers had a higher proportionate mortality ratio for prostate cancer than nonwhite workers.However, a different study from the same journal followed a cohort of workers at the Port Arthur refinery and found conflicting evidence that said overall, the workers did not suffer from excess mortality rates compared to other Texas residents.