making deep tunnel mining more likely to be used. The scale of some of the mines in the Silver Valley is hard to grasp. The galena deposits that led to the Bunker Hill stake in the 1880s were ...

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Located on a lonely mountain plain in Colorado ski country, the silver-rush-era town of Leadville holds secrets as deep as its tunnels and old mine workings.

A moment later, a powerful shockwave rips through the tunnel ... almost all the silver had already been mined and Potosí became a shell of its former self. Though mining still goes on in there ...

Anglo Asian Mining (LON: AAZ) said on Monday it had mined the first ore from Gilar, its new underground operation at the ...

The Sierra Silver Mine Tour explores the history of ... In addition to exploring the 1,500' mine tunnels underground, and the 3,000' of vintage track, visitors will be able to tour the restored ...

There was more silver produced after 1893 than before. The Smuggler Mine went deeper, doubling the depth of its operations. The Midnight more than tripled its depth. Aspen’s three longest tunnels were ...