What does RPMM stand for?
RPMM stands for "Room and Pillar Mining Methods"
How to abbreviate "Room and Pillar Mining Methods"?
"Room and Pillar Mining Methods" can be abbreviated as RPMM
What is the meaning of RPMM abbreviation?
The meaning of RPMM abbreviation is "Room and Pillar Mining Methods"
What does RPMM mean?
RPMM as abbreviation means "Room and Pillar Mining Methods"
