Inicio > Term: pillar drive
pillar drive
A wide irregular drift or entry, in firm dry ground, in which the roof is supported by pillars of natural earth or by artificial pillars of stone, without using timber.
- Parte del discurso: noun
- Industria/ámbito: Minería
- Categoría: Minería general; Mineral mining
- Government Agency: USBM
0
Creador
- ed.young
-
(V.I.P) 21084 puntos - 100% positive feedback
(Milwaukee, United States)
