The underground coal mining at Quinsam uses room-and-pillar methods. This mining method uses mechanized, remote control continuous mining machines to develop a series of underground roadways in the coal leaving a series of pillars of coal. The continuous miners cut and load the coal into shuttle cars, which haul and empty the coal onto a belt conveyor system leading to a coal stockpile on the surface. From there, coal is transported to the coal preparation plant.

A front-end-loader feeds coal into the coal preparation plant where the coal is crushed, sized, sorted and cleaned through a series of physical processes.