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SITE GEOLOGY
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VENETIA DIAMOND MINE,
SOUTH AFRICA
OPEN-PIT MINING
Venetia is a conventional open-pit mine. Surface mining is expected to carry on for some 20 years and, as the mine becomes deeper, the feasibility of underground operations will be investigated. The current targeted pit floor level is at a depth of 400m. A re-evaluation of the pit design undertaken during 1998 has reduced the waste-stripping requirements.
After waste stripping to expose the kimberlite, the ore is blasted and loaded into trucks, hauled to a crusher, reduced in size and conveyed to a primary stockpile. Crushed ore is then conveyed to the main treatment plant for processing. Key equipment in the pit includes O&K RH200E, electric-powered hydraulic excavators, equipped for monitoring and service purposes by direct radio link to O&K’s plant in Germany. Ancillary equipment includes Bell articulated water bowsers, used for road spraying, vehicle washing and fire-fighting duties.
