Technical Resource Document: Extraction and Beneficiation of Ores and Minerals. Volume 2. Gold

摘要

This industry profile presents the results of the EPA's research into the domestic gold industry and is one of a series of profiles of major mining sectors. This report briefly characterizes the geology of gold ores and the economics of the industry. Following this discussion is a review of gold extraction and beneficiation methods; this section provides the context for descriptions of wastes and materials managed by the industry, as well as a discussion of the potential environmental effects that may result from gold mining. The report concludes with a description of the current regulatory programs that apply to the gold mining industry as implemented by EPA, Federal land management agencies, and selected states. Appendices include flow sheets of specific mine operations, NPL site summaries related to gold extraction and beneficiation, comments on site visits and EPA responses.