Cloud Peak Energy is the Nov 2009 spin-off of Rio Tinto Energy America’s PRB operations and is the third largest US coal producer.
It operates three mines (Antelope, Cordero Rojo and Spring Creek) and sells an annual estimate 85 mm tons of low sulfur sub bituminous coal in the PRB. A majority of production is the lesser quality PRB 8400 contract.
As of Dec 31, 2013, CLD had an estimate 1.20 billion tons of proven and probable reserves.
CLD is headquartered in Gillette, WY.