Question

what is shaft mining? ​

Answer 1

Answer:

Shaft Mining

Explanation:

Shaft mining or shaft sinking is excavating a vertical or near-vertical tunnel from the top down, where there is initially no access to the bottom. ... When the top of the excavation is the ground surface, it is referred to as a shaft; when the top of the excavation is underground, it is called a winze or a sub-shaft.

Answer 2

Answer:

Shaft mining is excavating a vertical or near- vertical tunnel from the top down, where there initially no access to the bottom.