(September 1, 2023, 1:23 PM EDT) -- PHILADELPHIA — A pipeline company has filed its opening brief in the Third Circuit U.S. Court of Appeals arguing it should reverse a lower court’s decision and remand the case with instructions to issue a preliminary injunction enjoining the Pennsylvania Environmental Hearing Board (EHB) from considering an appeal of a permit to construct a gas pipeline expansion because permit appeals should be heard in federal appellate courts pursuant to the Natural Gas Act (NGA)....