Of the 1 million homes in Pennsylvania that ... launched an underground Mine Map Atlas, an online mapping system that allows the public to view underground mines across the state.

USA — Pennsylvania has a long history of anthracite coal mining. The result is that millions of buildings and homes are located above abandoned mines. Looking to see old mine maps? Penn State ...

Pa. Gov. Tom Corbett announced yesterday the release of Department of Environmental Protection’s “Pennsylvania Mine Map Atlas.” The online tool is a detailed map of the state’s underground mines.The ...

The old maps, created by coal companies, are routinely used by the few remaining underground anthracite mining operations in eastern Pennsylvania, by a larger number of bituminous coal mines in ...