A limestone mine in Pennsylvania, which houses thousands of cabinets and millions of federal retirement papers, has caught ...

While they’re not mining yet, Resolution Copper is slowly digging its way toward the lucrative ore. In fact, the site is ...

Fresh air from the surface is pumped down the mine shaft to supply oxygen to the miners. Workers are required to wear safety glasses, an emergency air pack that holds an hour's worth of oxygen ...

He then drove the vehicle down a hidden mine shaft in the mountainous area ... Angle rescue team was able to rescue the man. Dramatic photos from the scene show rescuers using ropes to send ...