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in 2013 there were 80209 people employed in coal mining in the u s of those 47475 worked in underground mining and 35398 worked in surface mining here is a breakdown of the geographical distribution of underground coal mining jobs in 2006 with coal production in thousands of short tons
Pennsylvania's manufacturing industry employed over 550,000 people in 2010, while the extraction of gas from shale had an $11.2 billion increase on the economy in 2010 in the energy industry. Over 205,000 people are employed in the technology sector, and the life sciences employ over 79,000.