Conventional mining is characterized as the oldest form of room pillar mining, which consists of a series of operations that involve cutting the coal bed, so it breaks easily when blasted with explosives or high pressure air, and then loading the broken coal.

Ref: 123327/2006-10-01


Other Database Pages Exist for this Phrase:
Mining (Mining refers to the science, technique, and ...)
Bed (Bed refers to a device intended to receive the ...)


You have no rights to post comments