• August 23, 2026
Cleated coal

Cleated coal is not a separate type of fuel but a descriptive term used by geologists and mining engineers to refer to coal seams that contain a well-developed system of…

  • August 22, 2026
Fractured coal

The term fractured coal refers to coal seams that contain pervasive natural cracks, joints and cleats which greatly influence their mechanical behavior, permeability and economic value. Fracturing may be the…