Skip to content

** FILE ** This March 25, 2014, file photo shows heat from machinery distorts the air as a worker watches over a hydraulic fracturing operation at an Encana Corp. gas well near Mead, Colo. (AP Photo/Brennan Linsley, File)

** FILE ** This March 25, 2014, file photo shows heat from machinery distorts the air as a worker watches over a hydraulic fracturing operation at an Encana Corp. gas well near Mead, Colo. (AP Photo/Brennan Linsley, File)

Featured Photo Galleries