
Any underground entry or passageway that is designed for transport of mined material, personnel, or equipment, usually by the installation of track or belt conveyor.
Found on
http://www.coaleducation.org/glossary.htm

Any underground entry or passageway that is designed for transport of mined material, personnel, or equipment, usually by the installation of track or belt conveyor.
Found on
http://www.rocksandminerals.com/glossary.htm
No exact match found.