This document discusses cancers that can result from occupational exposures. It outlines several known occupational carcinogens such as nickel, chromium, arsenic, and radioactive ores. The most common occupational cancers are lung cancer, bladder cancer, mesothelioma, leukemia, and laryngeal cancer. These cancers have been linked to exposures in industries like mining, construction, manufacturing, and others. The document recommends preventing occupational cancers through banning carcinogens when possible, regulating exposure standards, substituting less hazardous materials, improving workplace protections, and monitoring workers' health.