Health problems associated with air pollution were reviewed. Contaminants from industrial facilities contributing to the air pollution problem included dusts, fumes, vapors, and mists. Smoke control methods based on the use of nonvolatile or low volatile fuels or complete combustion furnaces were not effective at completely eradicating the pollution problem. Factors contributing to intensification of the problem were discussed. Review of the major air pollution crises included the 1930 smog in the Meuse Valley of Belgium, the 1948 smog affecting Donora, Pennsylvania, and the repetitive acute episodes affecting Los Angeles, California. Questions regarding the acute and chronic effects of air pollution were listed with regard to providing guidelines for both the direction of basic research and appropriate legislation. Suggested solutions to the problem included in/factory controls, within city smoke abatement ordinances, federal and state legislation, and site regulations for factory locations. Delegation of responsibility for air pollution control included legislators, factory managers, engineers, industrial hygienists, and the public. The author concludes that the air pollution problem can be solved using existing technology despite gaps in existing knowledge.