Filter by: Subject
Зараз показуються 1-10 з 1
dumping station (1) |
goaf (1) |
inside dumps (1) |
mining mode (1) |
NATURAL SCIENCES (1) |
NATURAL SCIENCES::Earth sciences (1) |
pit capacity (1) |
sinking rate of mining (1) |
type of open-pit transport (1) |
working area (1) |