(October 15, 2018, 11:02 AM EDT) -- WASHINGTON, D.C. — The U.S. Supreme Court on Oct. 15 denied a petition for writ of certiorari filed by companies who sought review of a California high court’s decision that a district attorney’s state law claims for violation of California’s unfair competition law (UCL) and False Advertising Law (FAL) in relation to an explosion that killed two people were not preempted by federal occupational safety and health law (Emerson Electric Co., et al. v. Superior Court of California, Orange County, et al., No. 17-1713, U.S. Sup.)....