- primary rock preconditioning
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первичное предразрушение породы
Англо-русский словарь технических терминов. 2005.
Англо-русский словарь технических терминов. 2005.
Underground mining (hard rock) — A three dimensional model of an underground mine with shaft access Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals[1] such as ore containing gold … Wikipedia