Parameter of ore Pillar
non-bottom-pillar short-hole stopping ore
compact ore massive ore
high sulfur-metallic ore sulphide ore
mushroom-like ore body and specific ore-host horizon
Ore-carrying and ore-depositing structures
ore-finding in near-ore
Sieving the ore-hunting aim of copper-nickel ore deposit
Ore-Controlling and Ore-Prospecting
room and pillar method with artificial pillar and bolting
1017 upland sliver-lead polynetallic ore deposit