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Permits the economical mining of small amounts of valuable minerals, metals, and coal that has a large amount of cover. One silver mine in Idaho is now about 5000 feet deep. The mine follows only the vein of high grade ore, and does not have the expense of removing a mile of low grade rock that covers it.
The Pros and Cons of underground mining are a question of economics. What does it cost to dig coal from under the ground as compared to the price for which one can sell the coal? Machinery costs, safety costs, ventilation costs, repairs are all issues must be considered. In countries such as Serbia, Ukraine, and China, worker safety costs are often ignored; the loss of human life would make an observer believe the over-all costs are negative. However coal-mining states sucgh as West Virginia, where cave-ins are far less common, would disagree
Pros
to get raw materials to make stuff.
Cons
ruins large areas of landscape.
most activities is done underground so it does not effect environmental problems compared to surface mining
what are three factors that make underground mining the best method for potash
There are many pros and cons including the ones listed below-
Pros (Advantages)-
1. Allows mines to be well hidden
2. Can be mined as deep as the company has permitted gaining more access to the minerals.
3. Produces very little waste
4. Helps stabilise the ground preventing rocks from falling.
Cons (Disadvantages)
1. Can often cause flooding
2. Destruction to the environment
3.Air pollution
4. Inaccessible fires in abandoned mines
5. Many toxic Chemicals and gases can leaking into soil and water causing many animal deaths.
6. Can cause many health issues to the workers including skin diseases, respiratory problems due to the gases and even black lung disease.
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