Adani Power Mining Overman Interview Questions and Answers

There are various types of explosives used in mining, along with different types of detonators.

• Types of explosives include dynamite, ammonium nitrate fuel oil (ANFO), and emulsion explosives.

• Detonators can be electric, non-electric, or electronic.

• Examples of detonators include blasting caps, shock tubes, and electronic delay detonators.

Coal pillars are left in underground mines to support the roof and prevent collapse.

• Pillar height is determined by the depth of the mine and the strength of the surrounding rock.

• Higher pillars provide more support but also leave less coal to be extracted.

• Pillar failure can lead to roof collapse and endanger miners.

• Proper pillar design and maintenance is crucial for safe and efficient mining operations.

Useful machinery for surface mining includes surface miner, dozer, ripper dozer, bucket wheel excavator, rope shovel, and hydraulic shovel.

• Surface miner is used for cutting and crushing rocks and minerals on the surface.

• Dozer is used for pushing and moving large quantities of earth and rocks.

• Ripper dozer is used for breaking up hard soil and rocks.

• Bucket wheel excavator is used for continuous digging and loading of mat...read more