The average price Freeport received for its gold surged nearly 28% to 1,902 per ounce in Q3, with copper and gold sales nearly 7% higher than the company's July estimates.

Renewable energy could see further gains following next month's election.

With rising prices, a favourable supply-demand outlook and few new mines in development, investors are paying close attention to copper.

Between 1887 and 1981, Bunker Hill was one of the most productive mines in America.

Senator Lisa Murkowski says she will use the federal appropriations process to protect the Bristol Bay region.