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Answer :
Environmentally speaking, surface mining is more harmful than deep mining. That's accurate. Strip mining and mountaintop removal mining are both types of surface mining. The removal of the rock and soil that lies on top of the mineral deposit falls under this broad area of mining.
Which four forms of surface mining are there?
According to the minerals being mined, there are five major categories of surface mining, all with unique variations. These include highwall mining, dredging, mountaintop removal, open-pit mining, strip mining, and mountaintop removal.
The usage of surface mines.
When it is economically feasible to remove "overburden" in order to access underground coal resource, surface mining is performed. The coal must typically be relatively closer to the surface, however as machinery improves its ability to transport material, "reasonably close" is getting deeper and deeper.
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Final answer:
Surface mining has ecological advantages in terms of preserving habitats, while also having disadvantages such as environmental damage. Subsurface mining has economical advantages in terms of accessing valuable resources, providing stable supplies, and generating revenue.
Explanation:
Ecological advantage of surface mining:
Surface mining can help to preserve valuable habitats and ecosystems that would otherwise be destroyed by subsurface mining. This is because surface mining involves removing the top layers of soil and vegetation, allowing for the eventual restoration of the land.
Ecological disadvantage of surface mining:
Surface mining can result in significant environmental damage, such as the destruction of habitats, disruption of ecosystems, and contamination of water sources. It can also contribute to deforestation and soil erosion.
Economical advantage of subsurface mining:
Subsurface mining can access valuable resources that are located deep underground, including minerals and fossil fuels. This can lead to economic growth, job opportunities, and the development of industries that rely on these resources.
Economical advantages of subsurface mining:
Subsurface mining can provide a stable supply of resources, as they are less vulnerable to weather conditions and other external factors. Additionally, subsurface mining can generate revenue through the sale and export of extracted resources, contributing to the economic well-being of a region or country.
