The objective was to provide a current status report and description information on the most stringent worldwide ordinances, regulations, and best applied technology pertaining to air pollution emissions from the following industries: nitric acid; sulfuric acid; steam-electric power generation, oil, coal, and gas fuel; municipal incinerators; and cement manufacturing. The names and addresses of both domestic and foreign plants utilizing the best technology were to be included. Information sources which were used and available cost data were also required. The pollutants of interest in this study were SOx, NOx, particulates, and visible emissions. A draft regulation including suggested methods of analysis was to be provided for the steam-electric power generation industry. This report includes an introduction, summary, and draft regulations.