Mealey's (December 7, 2021, 2:03 PM EST) -- WASHINGTON, D.C. — A hydraulic fracturing pipeline company on Dec. 3 filed a brief in the District of Columbia Circuit U.S. Court of Appeals contending that environmental groups who have appealed the Federal Energy Regulatory Commission’s (FERC) approval of the Mountain Valley Pipeline (MVP) assert arguments that lack merit, and the Circuit Court should “reject this bid to further delay construction of a much-needed energy infrastructure project.”...