Cloud Peak Energy Inc. along with its affiliates, filed a motion for joint administration of their Chapter 11 bankruptcy cases in the US Bankruptcy Court on May 10, 2019. As per the motion, the debtor seeks the joint administration of the cases of its affiliates, Antelope Coal LLC, Arrowhead I LLC, Arrowhead III LLC, Arrowhead II LLC, Big Metal Coal Co. LLC, Caballo Rojo LLC, Caballo Rojo LLC, Caballo Rojo Holdings LLC, Cloud Peak Energy Logistics LLC, Cloud Peak Energy Logistics I LLC, Cloud Peak Energy Resources LLC, Cloud Peak Energy Services Company, Cloud Peak Energy Finance Corp, Cordero Mining Company, Cordero Mining Holdings LLC, Cordero Oil And Gas LLC, "Kennecott Coal Sales LLC, NERCO LLC, NERCO Coal LLC, NERCO Coal Sales LLC, Prospect Land and Development LLC, Sequatchie Valley Coal Corporation, Spring Creek Coal LLC, Western Minerals LLC, Youngs Creek Mining Company LLC, Youngs Creek Holdings I LLC, Youngs Creek Holdings II LLC, CPE Resource Development LLC, with its own case for administrative and procedural purposes. Cloud Peak Energy Inc. has been proposed as the lead debtor.