Sublevel stoping and hot rock control technique
- [Nippon Mining Co.Ltd.]
- 22 p., ill.
- Metal mining technology in Japan JP .
a photocopy
ORE DEPOSITS-JAPAN
MINES AND MINING-STOPING
622.3 / S8
a photocopy
ORE DEPOSITS-JAPAN
MINES AND MINING-STOPING
622.3 / S8