(KDKA) -- An old limestone mine operated by Iron Mountain that's located just north of Pittsburgh in Butler County is drawing the ... speed at which the mine shaft elevator can move determines ...

THE SPEED AT WHICH THE MINE SHAFT ELEVATOR CAN MOVE DETERMINES HOW MANY ... ALSO US An old limestone mine in Pennsylvania is drawing the attention of the federal government – specifically ...

As the elevator descended, the door swung out and caught the side of the mine shaft, the guide fell out, was dragged and ended up landing on top of one of the tourists as the elevator continued ...

A mine inspector was among those on their tour, Nolan said, but she believed he was inspecting the operations underground, not the elevator. The area at the bottom of the shaft was large ...

According to a 1994 Gazette-Telegraph story, the mine shaft elevator system failed twice within a five-week span during the late spring and summer of that year, trapping visitors underground ...

but officials needed to make sure the equipment was safe before using the elevator again to bring up the 12 people still at the bottom of the mine shaft, Mikesell said. One tour company employee ...

It would likewise utilize elevators, but these ones would be in existing disused mine shafts, and they'd be raising and lowering containers full of sand. A diagram of the proposed Underground ...

As the elevator descended, the door swung out and caught the side of the mine shaft, the guide fell out, was dragged and ended up landing on top of one of the tourists as the elevator continued ...