Limestone - Missouri Department of Natural Resources
All Other Coal Producers 90,037 11.9 U.S. Total 756,167 100.0 Notes: The listed companies each produced more than 5 million short tons of coal in 2018. A controlling company of a mine is defined as the company 'controlling the coal, particularly the sale of the coal.' Most often, but not always, this is the owner of the mine.Quick Facts. 3,824,423 records of mining claims on public land managed by the Bureau of Land Management. 402,808 active mining claims. 172,792 records of mineral deposits in The United States. gold, silver, copper, lead, and iron deposits located in The United States.