Nchanga UG (KCM Vedanta) - Zambian Copperbelt (sitios de interés)
Descripción del sitio
RESOURCE BASE
Reserves: 18 mt at 2.7%
Resources: 30 mt at 2.6%
Resources: 30 mt at 2.6%
4.3.1.1 Nchanga Underground Mine
The mine was and is accessed by two vertical shafts approximately 945 m deep, both equipped to hoist ore,waste, personnel and materials.
The mining method used was block caving; however, since the orebodies were shallow dipping the block caving method applied was a variation on the traditional method. The mining area was undercut by long-hole drilling and blasting and the ore was allowed to cave into a series of finger raises from which it was pulled by scraperwinches into the ore handling system. The rate of caving was carefully controlled to ensure efficient extraction of the ore and limited dilution, a mining method characterised by a high development ratio.
Nchanga Underground was and remains a wet mine pumping 75,000 to 85,000 m3 of water day. Most of this water was pumped from the 2800 level and some from the 1600 level. Water control in the mine was good and did not hamper the mining operations.
The mine was and is accessed by two vertical shafts approximately 945 m deep, both equipped to hoist ore,waste, personnel and materials.
The mining method used was block caving; however, since the orebodies were shallow dipping the block caving method applied was a variation on the traditional method. The mining area was undercut by long-hole drilling and blasting and the ore was allowed to cave into a series of finger raises from which it was pulled by scraperwinches into the ore handling system. The rate of caving was carefully controlled to ensure efficient extraction of the ore and limited dilution, a mining method characterised by a high development ratio.
Nchanga Underground was and remains a wet mine pumping 75,000 to 85,000 m3 of water day. Most of this water was pumped from the 2800 level and some from the 1600 level. Water control in the mine was good and did not hamper the mining operations.
Vedanta Resources Plc (LSE:VED)
Konkola Copper Mines Plc