"The federal government is pushing new efforts to deal with an old problem -- abandoned oil and gas wells. In Pennsylvania, there may be as many as 100,000 orphan wells. If the wells were not sealed properly, they could explode. As The Allegheny Front’s Kate Malongowski reports, the government is using high-tech helicopters to find out where these wells are located."
"DOE Looks for Orphan Wells"
Source: Living on Earth, 06/04/2012