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Underground Mining Techniques and Risks | Geology for InvestorsJan 27, 2014 . Undergrounds mining is still, even after hundreds of years of safety improvements, a dangerous and expensive business. It's wise for an investor to understand both the basic workings for an underground mine and the risks associated with underground mining. A bad mine disaster may not only kill miners;.Mining - Underground mining | BritannicaOnce a decision has been made to go underground, the specific mining method selected depends on the size, shape, and orientation of the ore body, the grade of ... In hard rocks, such as the gold- and platinum-bearing reefs of South Africa, the same basic pattern is followed, but in these cases the seam is removed by.
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