Question

explain open cast mining and shaft mining? ​

Answer 1

Answer:

open cast mining mean mining in open with deep holes while shaft mining the gaps are not filled after mining...

Explanation:

Answer 2

Answer:

open cast mining:- open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining.

shaft mining:- 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. Shallow shafts, typically sunk for civil engineering projects differ greatly in execution method from deep shafts, typically sunk for mining projects.

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