Konkola ?1 Shaft (KCM Vedanta) - Zambian Copperbelt (sitios de interés)
Descripción del sitio
Vedanta Resources Plc
Indian controlled, but London listed diversified miner, Vedanta is reported to be poised to float off Konkola Copper Mines, its major Zambian copper producer for around US$ 7.3bn
KCM listing on the London Stock Exchange deferred to 2011
September 24, 2008:
Vedanta not to pursue in view of changes in global fiancial markets
September 9, 2008: Restructuring Presentation
Merge Vedanta's 79.4% holding in KCM into Sterlite
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Resource base:
Konkola (Ore Shale Only)
Proved 4.12Mt at 3.28% Cu, 0.28% AsCu
Probable 16.36Mt at 3.32% Cu, 0.33% AsCu
Konkola (FW & HW)
Measured 1.16Mt at 2.57% Cu, 0.61% AsCu
Indicated 24.81Mt at 2.46% Cu, 0.50% AsCu
Inferred 16.83Mt at 1.87% Cu, 0.51% As Cu
Konkola Deep Mine Project (KDMP)
Measured 1.60Mt at 3.53% Cu, 0.43% AsCu
Indicated 103.93Mt at 4.37% Cu, 0.44% AsCu
Inferred 87.10Mt at 4.10% Cu, 0.62% As Cu
3.5.1.3 Production and Mine Life
The reserves report, updated to August 2005, accounts for only 20.5 Mt of ore reserves. In addition, the total measured, indicated and inferred in situ ore resources of the existing Konkola and the new Konkola Deep Mine sum up to approximately 235 Mt. However, the 17 Mt of inferred resources associated with the existing mine are likely to be inaccessible leaving a practical total of 214 Mt of reserves and mineable resources (allowing for losses and dilution). According to the IMC projections the total ore production until 2035 will be approximately 164 Mt. The remaining 50 Mt ore would allow for another 8 years of mine operation at 6 Mtpa capacity. However, it has to be noted that the mineable resources include approximately 78 Mt of inferred resources. Assuming that all of the remaining 50 Mt of mineable resources at the end of the plan are inferred, the mine plan to 2035 already includes approximately 28 Mt of the production from inferred resources.
The reserves report, updated to August 2005, accounts for only 20.5 Mt of ore reserves. In addition, the total measured, indicated and inferred in situ ore resources of the existing Konkola and the new Konkola Deep Mine sum up to approximately 235 Mt. However, the 17 Mt of inferred resources associated with the existing mine are likely to be inaccessible leaving a practical total of 214 Mt of reserves and mineable resources (allowing for losses and dilution). According to the IMC projections the total ore production until 2035 will be approximately 164 Mt. The remaining 50 Mt ore would allow for another 8 years of mine operation at 6 Mtpa capacity. However, it has to be noted that the mineable resources include approximately 78 Mt of inferred resources. Assuming that all of the remaining 50 Mt of mineable resources at the end of the plan are inferred, the mine plan to 2035 already includes approximately 28 Mt of the production from inferred resources.
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3.3.1 Mining Facilities
The underground mine had two shaft sections, 1 shaft and 3 shaft. These areas were linked but run as separate production units. No 1 Shaft was the first to be sunk and is to a depth of 1,070 m, and 3 shaft is to a depth of 600 m. Both shafts were equipped for hoisting ore and waste plus personnel and materials. The rock hoisting capacity of each shaft was approximately 2.15 Mtpa. However, shaft capacity was not a production constraint as ore generation was significantly below these levels.
Haulage levels were being mined at 60 m vertical spacing, although previously these had been at greater intervals. The lowest haulage level was the 950 m haulage. The mining methods in use were sub-level open stoping (SLOS), and longitudinal room and pillar. SLOS was mechanised, but lack of development in the years prior to 2005 had limited the number of stopes available for production. The mining equipment available was in good condition and well maintained.
Konkola was and remains an extremely wet mine with pumping requirements of around 240,000 m3 of water per day to enable stoping operations to be maintained in a dewatered state. Water control consists of a series of settlers and sumps on various levels. Total installed pumping capacity was reported to be 480,000 m3 per day. Water control within the mine is good and the mining conditions are generally dry.
The underground mine had two shaft sections, 1 shaft and 3 shaft. These areas were linked but run as separate production units. No 1 Shaft was the first to be sunk and is to a depth of 1,070 m, and 3 shaft is to a depth of 600 m. Both shafts were equipped for hoisting ore and waste plus personnel and materials. The rock hoisting capacity of each shaft was approximately 2.15 Mtpa. However, shaft capacity was not a production constraint as ore generation was significantly below these levels.
Haulage levels were being mined at 60 m vertical spacing, although previously these had been at greater intervals. The lowest haulage level was the 950 m haulage. The mining methods in use were sub-level open stoping (SLOS), and longitudinal room and pillar. SLOS was mechanised, but lack of development in the years prior to 2005 had limited the number of stopes available for production. The mining equipment available was in good condition and well maintained.
Konkola was and remains an extremely wet mine with pumping requirements of around 240,000 m3 of water per day to enable stoping operations to be maintained in a dewatered state. Water control consists of a series of settlers and sumps on various levels. Total installed pumping capacity was reported to be 480,000 m3 per day. Water control within the mine is good and the mining conditions are generally dry.