Oaktown Mine 1
This underground mine is in the Illinois Basin near Oaktown in Knox County, Indiana. The mine uses continuous mining units and room-and-pillar techniques to produce high-sulfur coal.
Oaktown Mine 2
This mine is in Knox County, Indiana. It uses the same continuous mining and room-and-pillar techniques as Mine 1. It is currently idle.
Freelandville Center Pit
This surface mine is near Freelandville in Knox County, Indiana. This mine extracts high-sulfur coal from up to three seams. It is currently idle.
Prosperity Mine
This surface mine is near Petersburg in Pike County, Indiana. It produces low-sulfur coal. It is currently idle.