Questions
1. Discuss the points you would consider when selecting an underground production method or methods for a particular ore body. Indicate which points you consider to be the most important.
2. Describe a method of underground underhand cut and fill mining in detail. What are the advantages and disadvantages this method over other methods of mining similar ore bodies?
3. To be successful in underground block level caving, careful controlled draw point mucking must be practiced why is this?
4. Describe in detail the underground pocket and wing method of pillar extraction in room and pillar mining.
5. What methods of underground mining can be applied to the mining of inclined ore bodies dipping in the range 30 to 60 degrees? Describe one such method in detail citing an example of its application.
6. What types of pillars are commonly used in underground mining?
Describe a method of pillar design suitable for the design of a room and pillar mining system. What are the main factors that influence the design of such pillars?