(October 25, 2018, 7:16 AM EDT) -- NEW ORLEANS — A Fifth Circuit U.S. Court of Appeals panel on Oct. 18 affirmed the dismissal of lawsuits brought by 104 plaintiffs seeking damages stemming from the oil spill in the Gulf of Mexico that followed the explosion of the Deepwater Horizon oil rig on April 20, 2010, finding that they failed to show why they could not submit signed copies of the complaints in compliance with pretrial order 60 (PTO 60) (In re Deepwater Horizon, No. 17-30122, 5th Cir., 2018 U.S. App. LEXIS 29408)....