(October 12, 2017, 8:26 AM EDT) -- ST. LOUIS — A group of plaintiffs who contend that a lead-smelting company is liable for personal injuries and groundwater contamination from lead at a mining facility in Peru on Oct. 2 filed a brief in Missouri federal court opposing a motion to dismiss that was filed by companies that are non-Missouri defendants. The plaintiffs contend that an alter-ego theory of liability imposes jurisdiction over the non-Missouri defendants (J.Y.C.C., et al. v. Doe Run Resources Corporation, et al., No. 15-1704 [consolidated], E.D. Mo.)....