Basics of an open pit mineFig. 1, above shows an illustration of a Open Pit Surface Mine. The definition of a open pit mine is "an excavation or cut made at the surface of the ground for the purpose of extracting ore and which is open to the surface for the duration of the mine's life." To expose and mine the ore, it is generally necessary to excavate and.الألغام حفرة مفتوحة في جوبورغ],2. Mining Methods - Copper Development AssociationOpen pit mining is a technique used to extract copper ore near the earth's surface. Open pit mining is the most widely used technique of mining copper today. It is accomplished . In both mining techniques, the mined ore must be removed from the mine and transported to a plant for processing and refining. Trucks and trains.
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