A workshop on cyanide use in the minerals industry, sponsored by the Bureau of Mines, the National Science Foundation, the minerals industry, and supporting industries, was held on February 2-3, 1982, at the Bureau's Salt Lake City (Utah) Research Center. The workshop focused on use of cyanide as it relates to the gold and silver mining industry and the froth flotation processes employed by mineral mining companies. The intent was to discuss state-of-the- art technology and provide information pertinent to cyanide use in the minerals industry. No attempt was made to advocate regulatory limits or set policy governing the use of cyanide. The principal topics of discussion included (1) chemistry and use of cyanides, (2) control and treatment of cyanide mining wastes, (3) toxicity of mining wastes, (4) fate of cyanide in the environment, and (5) the analytical chemistry of cyanide. The problems associated with cyanide use in the mining industry and areas where technical information is insufficient were identified. The types of research required to understand and resolve potential adverse environmental problems were also identified. The problems and research needs are mentioned in a special summary to this document.