I never expected to find myself crouching in a humid mining tunnel, waiting — even hoping! — for a snake to slither its way ...

Villagers in Ethiopia uncover rare black opal nearly 10,000 ft high, reshaping the global gem market with vibrant stones.

NAHRIN, Afghanistan — On weekdays, when most kids around the world are at school, 12-year-old Mansour is in the middle of a grueling shift at the coal mines. Deep inside a tunnel carved into the side ...

As U.S. Highway 169 winds its way south and west of Chisholm, it passes over a series of underground tunnels burrowed decades ago by miners in pursuit of iron ore. The 40-plus-year-old road has stood ...

Tunnel Ridge LLC has applied to the Pennsylvania Department of Environmental Protection to revise its Tunnel Ridge Mine permit. The company is requesting to convert 1,155.75 acres from development to ...

A 42-year-old farmer died while his companion was injured severely after an abandoned illegal mining tunnel in Barangay ...