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29 January, 21:42

What are different types of mining? Pros and cons?

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  1. 29 January, 23:45
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    Mining techniques can be divided into two common excavation types: surface mining and underground mining. Today, surface mining is much more common. Surface mining saves times and energy, since it is more difficult to dig underneath the surface to mine for anything. Miners usually look for substances consisting of ore, natural gas, petroleum, and coal.
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