Question

What are the two main method of mining​

Answer 1

Answer:

there are usually four main methods of minning

1. underground

2. open surface (pit)

3.placer

4. in situ minning

Answer 2

Answer:

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☞Mining techniques can be divided into two common excavation types: surface mining and sub-surface (underground) mining. Today, surface mining is much more common, and produces, for example, 85% of minerals (excluding petroleum and natural gas) in the United States, including 98% of metallic ores.

There are four main methods of mining: underground, surface, placer and in-situ. The type of mining method used depends on the kind of resource that is being targeted for extraction, the deposit's location below or on the Earth's surface and the capacity of each method to profitably extract the resource.

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