American Consolidated Natural Resources

American Consolidated Natural Resources, previously known as Murray Energy, is a US-based coal mining company. It is the fourth largest coal producer in the country, and the largest privately owned coal company. Founded in 1988 by Robert E. Murray, the company filed for bankruptcy in 2019. The company gained notoriety following the collapse of the Crandall Canyon Mine in 2007, following a number of citations and fines for safety practices at the site.