What is open cast minning and shaft minning
Answers
Answer:
Open-pit, 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 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.
Answer:
difference
Explanation:
open cast minning is done when the substance is close to the earth's surface.... and shaft minning is done by drilling big pits out of the earth and when the substance is not very close to the earth's surface........ HOPE IT WILL HELP AND PLEASE HIT THE THANKS BUTTON DOWN THANKYOU SO MUCH FOR GIVING ME THIS OPPORTUNITY TO LET ME ANSWER YOUR QUESTIONS.... THANKYOU