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BLAST FRAGMENTATION OPTIMIZATION AT TARKWA …
The Southern African Institute of Mining and Metallurgy Surface Mining 2008 Alexandra AmielPage 113 BLAST FRAGMENTATION OPTIMIZATION AT TARKWA gold MINE USING 6 SIGMA METHODOLOGIES Miss Alexandra Amiel Goldfields Ghana Ltd TARKWA gold Mine Abstract: TARKWA gold Mine is owned by gold Fields Ghana, IAMGOLD and the Government of the Republic of Ghana in a 71%, 19% and 10% ratio. The mine is operated by gold Fields Ghana. This large, low-grade, open pit, gold mining operation is located in TARKWA , in the Western Region of Ghana, approximately 320 kilometres by road, west of Accra, the capital of Ghana, West Africa. In the Financial year ended June 2007, the operation mined a total of 108 million tonnes of which 22 million tonnes was ore. The mined ore is processed through three gyratory crushers supplying two heap leach pads (North and South) and a carbon-in-leach (CIL) the 6 Sigma project commenced, the current FRAGMENTATION was resulting in sub-optimal feed size to these crushers.
The Southern African Institute of Mining and Metallurgy Surface Mining 2008 Alexandra Amiel Page 113 BLAST FRAGMENTATION OPTIMIZATION AT TARKWA GOLD
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