FILE PHOTO: A pumping station owned by Tallgrass Energy is pictured in Guernsey, Wyoming, U.S. on January 17, 2017. Picture taken on January 17, 2017. REUTERS/David Gaffen
FILE PHOTO: A pumping station owned by Tallgrass Energy is pictured in Guernsey, Wyoming, U.S. on January 17, 2017. Picture taken on January 17, 2017. REUTERS/David Gaffen