Some Important Terms

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Adit:- It is a type of nearly level roadway,
driven to access a deposit which is at the higher level than the ground surface.

Overburden:- The valueless rock body covering the mineral up to the ground surface is called Overburden.

Chute:-It is a narrow passes from which the broken ore is loaded in Mines cars.

Country Rock:- The rock which contains the ore body, the hanging wall and the foot wall forms from the country Rock.

Hanging wall:- It is the roof of bedded deposit.

Foot wall:- It is the floor of bedded deposit.

Exploration:- The searching of mineral and gaining the knowledge of shape, size, position, and value of an ore body.

Heading:- The driving of roadway in any part of U/G mines, mainly in development stage.

Level:- A approach to the mineral bed by driving a horizontal roadway by branching the shaft, called level.

Shaft:- It is a inclined or vertical entrance to mined out the economical deposit.

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Bord and Pillar Method

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Bord and Pillar Method of mining involves in the formation of roadways and the development of Mines. The first stage of working of Bord and Pillar Method is Called Development. In the development stage parallel roads are driven nearly at right angle to the first set. These roads are also use to join the separated coal blocks. The network of roads regularly increases as development of the mine. The second stage of working of Board and Pillar Method  of mining is called Depillaring. The Depillaring can be understood by It's name(De-Pillaring). In Depillaring the working involves in the extraction of coal from the Pillars. These are two stages of this mining method. The another name of Bord and Pillar method is "Pillar and Stall". For the application of Bord and Pillar Method there are some conditions to be full filled. Conditions are.... •The thickness of seam seam should be more than 1.5m. •There is less amount of dirt bands present in seams. •Se
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