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Questions and Answers
What is the most complex and technically challenging underground mine design?
What is the most complex and technically challenging underground mine design?
- Sublevel caving
- Block caving (correct)
- Room and pillar mining
- Longhole open stoping
When is block caving typically selected as a mining method?
When is block caving typically selected as a mining method?
- For narrow, shallow, and compact orebodies
- For small, deep, and brittle orebodies
- For high tonnage from a massive weak orebody (correct)
- For moderate tonnage and strong orebodies
What distinguishes room and pillar mining from block caving?
What distinguishes room and pillar mining from block caving?
- Application in large orebodies
- Progressive undercutting slices
- Gravity-assisted ore collection (correct)
- Vertical dimension exceeding 100m
In which type of orebodies can room and pillar mining be applied more easily?
In which type of orebodies can room and pillar mining be applied more easily?
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When are hard rock room and pillar mining costs relatively low?
When are hard rock room and pillar mining costs relatively low?
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