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The Hayden Hill Project is an open pit gold and silver mine located in northern Lassen County, California. The project site is composed of approximately 2,800 acres of private, BLM and USFS land. The operation utilizes conventional heap leach and milling processes to recover metal values from a shallow epithermal deposit. Ore will be processed at a rate of approximately 6 million tons per year for eight years. At project completion approximately 970 acres will be disturbed.doi:10.21000/jasmr93010551 fatcat:ugt2h7e3zfah7p6hec4zue2ay4