Many mines shut down in the '80s and '90s, and while environmental issues remain, using these sites to create new energy brings a sense of continuity." But the shift isn't without challenges.

There are about 500,000 abandoned mines in the United States, according to the Mine Safety and Health Administration, and these long-forgotten facilities can pose a variety of risks to people ...

The Good Samaritan Remediation of Abandoned Hardrock Mines Act, signed into law by President Joe Biden on Dec. 19, is the first step in removing burdensome legal liabilities for groups and state ...