1. 

   1 year ago

   Vintage Photos of Coal Miners: Unveiling the Brutal Conditions They Faced Underground 1900s 1940s

   Rare Photos Central
2. 

   2 years ago

   Why Pennsylvania's coal mine fire problems are here to stay forever

   It's History
3. 

   4 years ago

   No 9 Mine & Museum

   TheNorthAmericanTraveler