
An underground mining method in which small areas are worked (15 to 150 feet) by a continuous miner in conjunction with the use of hydraulic roof supports.
Found on 
http://www.coaleducation.org/glossary.htm

An underground mining method in which small areas are worked (15 to 150 feet) by a continuous miner in conjunction with the use of hydraulic roof supports.
Found on 
http://www.rocksandminerals.com/glossary.htm
  No exact match found.