1) ethylene oxide (a sterilant gas) in relation to hematopoetic and breast cancer, 2) silica in relation to lung cancer, kidney disease, and silicosis, 3) environmental tobacco smoke in relation to heart disease, 4) dioxin in relation to all cancers, 5) diesel fumes in relation to lung cancer, 6) pesticides in relation to neurologic and genotoxic outcomes, 7) stress and shift work in relation to heart disease