The Guelb Moghrein copper-gold operation is 100% owned by Mauritanian Copper Mines (MCM), a First Quantum subsidiary. The mine is located 250 kilometres northeast of the nation’s capital, Nouakchott, near the town of Akjoujt.
The Guelb Moghrein deposit was first developed in the early 1970s by Anglo American Corporation but was closed in 1977 due to technical difficulties and high fuel prices. First Quantum acquired an 80% interest in the asset in 2004 and achieved commercial production in 2006. In 2010, the Company increased its ownership in Guelb Moghrein to 100%.
In addition to the Guelb Moghrein mining concession, First Quantum holds six exploration concessions in the area around the mine totaling 5,269 km2 of ground, and three exploration licenses in southern Mauritania.
Mining and Processing
Mining started in April 2006. Commissioning of the copper flotation plant commenced in July 2006 and commercial production began in October 2006. In October 2009, the mining rate was increased to 3.8 million tonnes of ore per year at a strip ratio of 3:1 (waste to ore). On average, sufficient ore is stockpiled for one month’s feed to the plant.
Mining is carried out in a single open pit using hydraulic excavators and mechanical drive haul trucks. Sulphide ore is treated in the processing plant to produce a copper-gold concentrate from the copper flotation circuit and doré bullion from the gold flotation/carbon-in-leach circuit.
The plant currently produces approximately 17,000 tonnes of concentrate per month at a grade 22.5% copper with credits received for gold in concentrate and gold in bullion.
2010 Facts and Stats
- Copper in concentrate produced (tonnes): 36,969
- Gold produced (ounces): 81,766
- Cash cost of production: $0.90 per lb of copper
- Type of mine: open pit
- Current estimated mine life: 6.5 years
- Employees:1,216
Expansion
- The main focus is on optimizing the recently completed expansion which increased throughput capacity to 3.8 million tonnes per year. The higher throughput combined with enhanced recoveries will allow annual copper production to rise to approximately 50,000 tonnes by 2012.
- Ongoing exploration at and near the mine is focused on identifying additional feedstock to extend the life of the operation.