Deep underground – Coal mining in Pennsylvania's Anthracite Region – Canadian Military History

Drifts, Bells, and Shafts: A History of Coal Mining since the Ancient World - Brewminate: A Bold Blend of News and Ideas

Coal Mining The Canadian Encyclopedia

Coal

Underground Miners – Dedicated to preserving Pennsylvania's anthracite coal mining heritage.

Drifts, Bells, and Shafts: A History of Coal Mining since the Ancient World - Brewminate: A Bold Blend of News and Ideas

We Dig: 200 Years of Extraction in the Anthracite Fields of Pennsylvania – The Library Company of Philadelphia

Early Coal Mining in the Anthracite Region (PA) (Images of America): Richards, John Stuart: 9780738509785: : Books

Underground mining operations hi-res stock photography and images - Alamy

Pennsylvania has the most abandoned coal mines in the U.S., how $245 million will help?