Mealey's ( August 16, 2016, 1:54 PM EDT) -- DENVER — Two federal agencies and a group of environmental groups on Aug. 12 filed briefs in the 10th Circuit U.S. Court of Appeals contending that Congress expressly delegated to the federal agencies “broad authority” to regulate oil and gas operations on federal lands and that a district court misinterpreted the Mineral Lease Act (MLA) when it ruled that a federal fracking regulation — known as the final rule — was “unlawful” (State of Wyoming, et al. v. Sally Jewell, et al., Sierra Club, et al. intervenors, No. 16-8068, 10th Cir.)....