Underground Mining Methods and Equipment - EOLSS

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The primary operations required in underground are rock breakage an d material handling. If the target is sufficiently soft (e.g., coal and rock salt), mechanical excavation utilizing continuous miners, shearers, ploughs/plows, and so on, can be employed. In contrast, drilling and blasting are usually employed when the ore is too hard for cutting.

  Underground, Hard, Rocks, In underground