PHOTO GALLERY: The regions north of the Lehigh Valley were coal country in the 1800s and 1900s. The mountains provided anthracite or “hard coal.” Here are photos of coal mining from The Morning Call ...
Rescue workers pull a miner worker from the Orient No. 2 coal mine in West Frankfort, Ill., Dec. 22, 1951, following an underground methane explosion. The state legislature passed the Illinois Mining ...
Natural deposits of helium gas found in UK coal seams could help scientists monitor the secure recovery of coal or shale gas from underground sites, according to research. Natural deposits of helium ...
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