File:Underground mining.jpg
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Summary
| Description | English: 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. |
| Date | 10 April 2017 () |
| File source | http://www.wabicorp.com/underground-mining-role-characteristics-mine-cages/ |
| Author | Johnny Daviau |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:59, 10 April 2017 | | 674 × 402 (103 KB) | SaminderjitNagi (talk | contribs) | User created page with UploadWizard |
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