FILE - In this Wednesday, April 15, 2009, file photo, an unidentified worker checks a bit on a rig being used to drill a well during a tour of facilities of natural gas producer Williams in Rulison, Colo. Energy Transfer Equity is buying pipeline operator The Williams Cos. for approximately $32.61 billion, the companies announced, Monday, Sept. 28, 2015. (AP Photo/David Zalubowski, File)