A mine safety expert says many old mines in Western Pennsylvania have less than 50 feet of ground cover between the mine and ...

Hundreds of federal workers process thousands of retirement applications every month, by hand in a converted former mine.

Elon Musk drew attention to a decades-old converted underground limestone mine in Pennsylvania his Department of Government ...

The United States government's Office of Personnel Management uses Iron Mountain to process and store paperwork when federal ...

An old Pennsylvania limestone mine housing all retirement paperwork for government employees is limiting how fast workers can ...

The sinkhole on Route 80 is over one of the 400 mines active during the Revolutionary War but it's hard to accurately ...

Elon Musk, in his mission to enhance government productivity and reduce unnecessary spending, has found a new target for ...