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TROU MINE VERTICAL [1 record]

Record 1 1989-03-14

English

Subject field(s)
  • Blasting Work (Mining)
DEF

A borehole drilled vertically downward or upward

French

Domaine(s)
  • Travail aux explosifs (Exploitation minière)
CONT

Exploitation à ciel ouvert. Les trous de mine verticaux sont de longueur un peu supérieure à la hauteur du gradin, habituellement de 8 à 15 m. Les trous légèrement inclinés par rapport à la pente du gradin sont plus efficaces, mais plus difficiles à forer. Dans quelques exploitations, on fore des trous jusqu’à 40 m.

Spanish

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