TERMIUM Plus®

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UPPER HOLE [1 record]

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Record 1 1999-08-26

English

Subject field(s)
  • Extraction Procedures - Various (Mining)
CONT

Overhand stoping is used with cut-and-fill, with both dry rock and hydraulic sand as backfill material. Overhand means that the ore is drilled from below by blasting a slice 3.0 m to 4.0 m thick. This allows the complete stope area to be drilled and the blasting of the full stope without interruptions. The "uppers" holes are drilled with simple wagon drills.

French

Domaine(s)
  • Procédés d'extraction divers (Exploit. minière)

Spanish

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