1. U.S. Environmental Protection Agency. Fourth Report to Congress: Resource Recovery and Waste Reduction, in press.
2. Quality of products from Bureau of Mines resource recovery systems and suitability for recycling;Sullivan,1976
3. Refining Molten Iron by Sulfide Forming Slags and Chlorination;Makar;Bureau of Mines Report of Investigation 8065,1975
4. Automotive Scrap Recycling: Processes, Prices, and Prospects;Sawyer,1974