Which one of the following examples of shafts ? a-deep bores
b-surface mining
c-off-shore drilling
d-opencast mining
Answers
Answer:
The correct answer to the question -"Which one of the following examples of shafts ? a-deep bores b-surface mining c-off-shore drilling d-opencast mining" is-
(A) Deep bores
Explanation:
Deep bores
Deep bores are called shaft, that have to be made to reach minerals deposits that lies at great depths.
For this we should know ,
Shaft mining
Shaft mining, is also termed shaft sinking, it is particularly ideal for iron or coal, which is a concentrated mineral deposits, that are deeply embedded underground.
It is a form of underground mining which is done using shafts driven vertically from the top to down into the earth . This is done to access ore or minerals.
Since, shafts in geography are long vertical passage sunk into the earth, as for a mine or tunnel and ,therefore, deep bores are the example of shafts as that have to be made to reach minerals deposits that lies at great depths.