(October 10, 2019, 8:34 AM EDT) -- JOPLIN, Mo. — A Missouri federal judge on Sept. 5 denied an insurer’s motion for certification of an order of interlocutory appeal on a choice-of-law determination ruling in an environmental contamination coverage dispute after determining that the insurer failed to prove that the case is an exceptional one that warrants immediate appeal (Butterball LLC v. Great American E&S Insurance Co., No. 18-5074, W.D. Mo., 2019 U.S. Dist. LEXIS 173975)....