Asarco LLC v. Noranda Mining, Inc., 844 F.3d 1201 (10th Cir. 2017). In a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) contribution action, the Tenth Circuit ruled that a mining company, whose liability for a contaminated site had been resolved in a settlement agreement approved by the bankruptcy court, could still seek contribution against other potentially responsible parties (PRPs), claiming that it overpaid its fair share of cleanup costs for the site. Id. at 1208.