One site where Trout Unlimited has worked is the abandoned gold and silver Orphan Boy Mine near Alma, Colorado. Jason Willis, the director of the group's Western Abandoned Mine Lands Program ...

The recent sinkholes on I-80 were caused by long-abandoned mines. See the map showing hundreds of closed New Jersey mines.

The Sterling Mine, the last operating mine in New Jersey, suspended large-scale commercial mining operations in 1986. Since ...

Starting in the early 20th century, industrial-scale mining operations have produced prodigious amounts of mineral commodities including gold, silver ... at least 140,000 abandoned hardrock ...

But the old mines also left behind a legacy of trouble for today’s Westerners. Abandoned mines dot the Western landscape, polluting the region’s streams with acid mine drainage and connecting the ...

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 ...

Swaths of Pennsylvania and many other states are honeycombed with old, unstable mines that can cause the earth to suddenly give way and threaten people and property. That's what searchers in ...

The UK is home to many ancient sites, but few are as fascinating as the abandoned Roman gold mines hidden in the Welsh countryside. The Dolaucothi Gold Mines in Carmarthenshire date back over ...