In 1991, Amax Gold Inc. proposed to Lassen County officials their intention to again start up the mining activity at Hayden Hill. It was their intention to literally remove the hill and to extract gold and silver with a cyanide leach ponds. Amax formed a subsidiary company, Lassen Gold Mining, to undertake the enterprise. Lassen Gold carried out the mining operations on the Hill from 1992 to 1997. According to Company figures, approximately 510,000 ounces of gold and 1.4 million ounces were extracted.

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