(December 18, 2017, 7:29 AM EST) -- OKLAHOMA CITY — A third-party defendant in a lawsuit brought by two men who were injured by a lithium battery that exploded during a hydraulic fracturing operation on Dec. 11 filed a brief in Oklahoma federal court, arguing that the court should certify its questions of procedure to the Oklahoma Supreme Court (Jacob McGehee, et al. v. Southwest Electronic Energy Corporation, et al., and Southwest Electronic Energy Corporation v. Engineered Power LP, et al., No. 15-145, W.D. Okla.)....