Gamsberg zinc prestrip nearly 50% complete – Vedanta
The prestripping of waste rock at the Gamsberg zinc mine project, in the Northern Cape, is close to the halfway mark, Vedanta Resources reported last week, when interim CEO Kuldip Kaura described as “strong” the quarterly production performances of the London-listed, India-rooted mining company’s zinc, Copper India and aluminium businesses.
In South Africa, Vedanta subsidiary Zinc International has committed more than 80% of the $400-million capital expenditure to the first phase of the Gamsberg zinc project, which is expected to have a mine life of 13 years and restore Vedanta’s Zinc International volumes to more than 300 000 t/y.
Vedanta reported 32-million-plus tons of waste rock had been prestripped at Gamsberg, out of a required 65-million to 70-million tons.
This is taking place at a time of a high-flying zinc price, which last week hit the $3 308.75/t mark – its highest point in ten years.
Mined metal production from Vedanta’s Zinc India in the six months to end-September was a 42%-higher 452 000 t, compared with the same period last year, driven by higher ore production across all mines.
In Southern Africa, quarterly zinc production in the three months to September 30 rose to a 33%-higher 42 000 t, which was 13% higher year-on-year. Production at Skorpion Zinc, in Namibia, soared 66% to 23 000 t, following a planned first-quarter refinery shutdown to restore the acid plant to full capacity.
Production at Black Mountain, in South Africa, increased to 20 000 t, a 23% better year-on-year performance, on better grades from improved drilling accuracy and higher recoveries from better operational efficiencies.
At Skorpion, most of the equipment is in place at the Pit 112 extension project, where waste mining hit record levels in the three months to September 30.
At Copper Zambia, mined metal production was 25 000 t, a 21% quarter-on-quarter achievement.
In Zambia, at the Konkola mine, ongoing improvement in equipment availability was reported; at the Nchanga opencast mine, improved production is expected in future quarters; at the Nchanga underground mine, targeted production is expected from the third quarter onwards; and, at the tailings leach plant, production increased in the cur-rent quar- ter on improved pump and plant availability.
Smelter use has improved on higher production and increased sourcing of third-party concentrates.
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