This expansion will see the CIL plant increase its processing design capacity from the current 4.2 million tonnes a year and the mine’s further transition from heap leach processing will take place between 2009 and 2012.
Tarkwa was originally a small underground mine when it was purchased by Gold Fields in the mid-1990s. The company saw that the best route for mining Tarkwa was predominantly as an opencast operation and the underground operation was closed some years later, in 1999. In 2000 some of the assets of the adjacent former Teberebie opencast mine were purchased and merged with Tarkwa, and at the end of 2003 Tarkwa commissioned its CIL plant, having previously been exclusively a heap leach operation. With the expansion of the CIL plant its South heap leach plant, which was the former Teberebie plant, will be shut down, and Tarkwa’s North heap leach plant will taper off but continue to treat the material that is not passed through the CIL plant.
Iduapriem, located 300 km from Accra and 85 km from the nearest coastal town of Takoradi, shares a mining lease boundary with Gold Fields’ Tarkwa mine and mines the same 40O to 50O dipping orebody to produce 210,000 ounces of gold a year at a cash cost of just over US$310/oz. Some 24 million tonnes of material is moved a year in the course of mining this open pit operation.
When Ghanaian gold producer Ashanti Goldfields decided to merge with AngloGold in 2004 one of the key reasons was a need for capital and technology for Obuasi. That the long term future of Obuasi hinges on its deep level underground potential made it a good fit for a South African-based gold company with such expertise, albeit Obuasi’s orebody is very different to that of the deep level mines in South Africa.
Montreal-based Robex Resources, which is undertaking exploration for gold in Mali, has announced the discovery of high grade gold values in 11 pits from the Fandou zone on its Wili-Wili permits, located at the southern extremity of east Mali. The pits are located in the northern centre of an important gold anomaly measuring 2.8 km in length over an average width of 600 metres.
Denver, Colorado-based Golden Star Resources expects to increase its production from West Africa from 200,000 ounces of gold last year to 300,000 ounces this year and 500,000 ounces in 2007, mainly thanks to its Sulphide Expansion Project at the Bogoso/Prestea mine in Ghana. Construction and development activities for this expansion are expected to be completed towards the end of the third quarter of this year at a cost of US$125 million. The company had originally targeted to complete construction in the fourth quarter.
According to applications engineer, Gerrit Kotze, successful installations for gold mining applications have been in Ghana, Guinea, Botswana, Ethiopia, South Africa and Tanzania.
Mponeng mine]Johannesburg, South Africa --- MININGREVIEW.COM --- 11 February, 2008 - International mining giant AngloGold Ashanti experienced a 3% decrease in gold production last year, and is expecting a further drop of around 10% during 2008.
Releasing its results for the fourth quarter and full year to 31 December 2007, the company revealed a 3% reduction to 5.5Moz for the year, principally as a result of the safety interventions in South Africa and the operational difficulties experienced at Geita gold mine in Tanzania.
Elandsrand, one of
Harmony’s four gold
by 2010]Cape Town, South Africa --- MININGREVIEW.COM --- 6 February, 2008 - Harmony Gold – the world’s fifth largest gold producer – intends producing 2.5 million ounces of gold by 2010/11, an increase of 25% on current production levels.
the Sukari Hill gold
project in Egypt]Mount Pleasant, Australia --- MININGREVIEW.COM --- 6 February, 2008 - The Sukari gold project – the first large-scale, modern gold mine to be developed in Egypt – has recorded another substantial JORC compliant resource upgrade as it moves towards its production target date before the end of 2008.