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1 de feb. de 2010 · Underground mining: room-and-pillar mining of thick seams –“Benching” Different approaches allow either the top or bottom part of the seam to be mined out first.
Once 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 mineralization, the strength of the rock materials, and the depths involved.
Underground mining methods become necessary when the stripping ratio becomes uneconomical, or occasionally when the surface use of the land would prohibit surface mining. Underground methods are traditionally broken into three classes: unsupported, supported, and caving methods.
Learn how Anglo American uses different mining methods to extract various products from the ground, such as coal, platinum, diamonds and copper. See the advantages, disadvantages and examples of each method, from open-pit to underwater mining.
Underground hard-rock mining refers to various underground mining techniques used to excavate "hard" minerals, usually those containing metals, such as ore containing gold, silver, iron, copper, zinc, nickel, tin, and lead.
1 de ene. de 2023 · Underground mining refers to various subsurface mining techniques used to excavate minerals (Diogo, 2020). A primary constraint of underground mining is to maximise ore extraction and recovery while minimising waste extraction.
26 de oct. de 2022 · Learn about the different types and principles of underground mining methods for metallic mineral deposits, such as open stope, cut and fill, and caving. See examples, references, and author information from the ECPH Encyclopedia of Mining and Metallurgy.
