Underground Metal Mining — Summer 2019

Explain room and pillar method with neat sketch.

Define the following term: Cross cut, Chute, and Garages.

Describe classification of different stopping methods.

Explain sub-level stopping method with neat sketch.

Describe present status of Indian metal mining industry.

Define the following term: Stope, Stoping, Crown pillar and Grizzlies.

Explain top slicing stopping method with neat sketch.

Differentiate between pneumatic and mechanical method of backfilling.

Explain how working is carried out in metal mine when ore body is wide.

Describe the basic fundamental of cut & fill method.

Explain under hand stopping method with neat sketch.

Explain ore and waste bin with neat sketch.

Explain over hand stopping method with neat sketch.

Describe blast hole and vertical crater retreat method.

Describe skip-pockets in details.

Explain underground crushing.

Discuss the various points to be considered for selection of stopping methods.

List out the different types of backfilling methods used in metal mining. Explain hydraulic backfilling.

Explain stopping of super-imposed veins and parallel ore bodies.

Explain stope layouts and stop preparation work in underground metal mining.

Explain haulage and dumping.

Write a note on construction of mine portal.

Explain secondary breaking in brief.

Describe design and construction of draw points.

Write a note on recovery and dilution.