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Answer :
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The type of mine that involves digging tunnels and shafts deep underground is called a subsurface mine. This technique is essential for accessing ore deposits that are located far beneath the Earth's surface. Examples include shaft, slope, and drift mining methods.
Explanation:
Types of Mining Techniques
When it comes to mining, various techniques are employed based on the location and depth of the ore deposits. The type of mine that involves detailed tunneling and digging deep underground is known as a subsurface mine.
Subsurface Mining
Subsurface mining, also referred to as deep mining, utilizes tunnels and shafts that extend deep below the surface to access mineral resources. This method is necessary when ore deposits are located too far beneath the surface to be extracted through surface mining techniques. There are several forms of subsurface mining:
- Shaft mining: Involves vertical shafts dug down to the ore body, with tunnels extending horizontally to reach the minerals.
- Slope mining: Features a diagonal tunnel leading down to the ore.
- Drift mining: Involves horizontal tunnels at the same level as the deposit.
These methods allow miners to reach deposits that may be several thousand feet underground, as seen, for instance, in South Africa's gold mining operations in the Witwatersrand basin.
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