The Denver Post
November 20, 2011, Mark Jaffe

As traffic whizzed by on Interstate 25, 12 trucks in a field near Frederick, each with a 1,200-horsepower motor, fired up and began pumping fluid out of 20-foot-high tanks and down a freshly drilled Anadarko Petroleum Corp. well. The destination for the 450,000 gallons of high-pressure fluid was 6,000 feet below the surface, where it fractured the rock, releasing more natural gas...

http://www.denverpost.com/business/ci_19371498