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Answer :
Final answer:
Subsurface mining is a method used to extract deep ore deposits through vertical shafts and horizontal tunnels. Techniques like in-situ mining minimize land disturbance and waste. Despite its advantages, subsurface mining is more expensive and poses risks to miners.
Explanation:
How to Get Ore Through Subsurface Mining
Subsurface mining is essential for extracting minerals that are located deep beneath the Earth's surface, as surface mining may not be economically viable or practical for these resources. There are various methods to conduct subsurface mining:
- Vertical Shafts: A deep vertical shaft is dug down to reach the ore body. Once the shaft is created, tunnels are dug horizontally from the shaft to access the ore.
- Tunnels: These tunnels are crucial as they allow miners and equipment to traverse the underground space to extract the ore. This method minimizes disruption to the land surface compared to surface mining.
- In-situ Mining: This newer method involves injecting a weak acid solution into the ore body to dissolve the minerals, which are then pumped to the surface for processing. It allows co-existence with other land uses and produces less surface waste.
Even though subsurface mining is less intrusive to the land surface and produces fewer waste materials compared to surface mining, it presents significant challenges, including higher costs and increased danger for the miners due to potential mine collapses and health risks from dust and particles.
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