The U.S. Interior Department on Thursday took steps to increase recovery of critical minerals, used in everything from electric vehicles to high-tech weapons, from mine waste, coal refuse, tailings ...

Oklahoma has vast deposits of coal with an estimated 1.6 billion tons beneath 19 counties in northeastern and southeastern portions of the state.

According to a report from Mining.com, in an effort to reduce external dependence and strengthen domestic production, the US government has recently attempted to extract high-value critical minerals, ...

The coal industry employs 250 Oklahomans directly, according to statistics provided by the Oklahoma Department of Mines. Most of the coal is bituminous coal beds, and some have a high sulfur content.