Mealey's (September 12, 2018, 2:25 PM EDT) -- WASHINGTON, D.C. — A California district attorney on Sept. 7 filed an opposition to a petition for writ of certiorari filed by companies sued in relation to an explosion that killed employees, arguing that the state’s high court properly held that claims for violations of California’s unfair competition law (UCL) and false advertising law (FAL) are 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.)....