Iron Mountain - Boyers, PA
- Aerial imagery of extensive underground storage vault system at former US Steel limestone mine in Boyers, PA.
Parking area and a road entrance into the mine is visible on Branchton RD just south of Boyers.
Over 1,000 people work inside the facility for dozens of tenants, including major archives, corporations,
universities, and the US government.
Google gives several good articles on this facility.