Underground mining (hard rock)

A three-dimensional model of an underground mine with shaft access

Door for directing ventilation in an old lead mine. The ore hopper at the front is not part of the ventilation.

Sub-Level Caving Subsidence reaches surface at the Ridgeway underground mine.

Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds. In contrast soft rock mining refers to excavation of softer minerals such as salt, coal, or oil sands.

单词	Block Caving
释义	Block Caving 英语百科 Underground mining (hard rock) Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds. In contrast soft rock mining refers to excavation of softer minerals such as salt, coal, or oil sands.
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Block Caving

Underground mining (hard rock)