1. D. J. Robinson, “Development of a Process to Separate the Metal Values from Dental Amalgam Scrap” in Precious Metals: Mining, Extraction, and Processing, edited by V. Kudryk, D. A. Corrigan, and W. W. Liang, TMS-AIME, Warrendale, Pennsylvania, 1984, pp. 449–461.
2. S. C Malhotra, “Future Opportunities in the Reclamation of Precious Metals from Major Sources of Obsolete Scrap,” ibid., pp. 483–494.
3. B. F. Kieffer, “Recycling Systems with Particular Emphasis to the Zinc Process,” Met. Powder Rep., 38 (12), 1983, pp. 667–672.
4. S. Dale, “Tungsten Scrap and the Zinc Process,” Met. Bull. Mon., 154, October 1983, pp. 101–102.
5. T. Storbrock, “Computer Scrap Becomes a Gold and Silver Mine,” VDI Nachr., 38 (9), March 1984, P. 14.