Stock watch:

Fracking for natural gas being powered by it, too

Associated Press
Fracking for natural gas being powered by it, too

In this photo made on Thursday, Jan. 17, 2013, technician Sean Cline finishes up the conversion of a 50 litre, 16 cylinder, Cummins diesel engine with four turbo-chargers that has been converted to run on a blend of diesel and natural gas at the Cummins Bridgeway facility in Gibsonia, Pa. Oil- and gas-field companies from Pennsylvania to Texas are experimenting with converting the huge diesel engines that operate pumps that propel millions of gallons of water, sand and chemicals down a well bore in the fracturing process to break apart rock or tight sands that trap natural gas. (AP Photo/Keith Srakocic)

View Comments (0)