Based on Skorpion Zinc’s initial life-of-mine estimate, the project was expected to be exhausted by around 2014–2015.
That was the horizon Anglo American set when it commissioned the mine and refinery in 2003, designed to run for roughly 11 years on the known oxide orebody.
Everything beyond that point was borrowed time, achieved through life-extension measures such as mining lower-grade ore, adjusting the pit design and processing marginal material.
These steps pushed the end date out first to 2017, then to 2020, but they could not alter the reality that the economically viable oxide reserves were finite.
Skorpion Zinc began as a geological curiosity in Namibia’s far south—an oxide zinc deposit in a desert palaeochannel that metallurgists struggled to commercialise for decades.
Anglo American finally cracked the flowsheet in the early 2000s, building a world-first refinery that used atmospheric leach and solvent-extraction/electrowinning (SX-EW) to make Special High Grade zinc metal.
The complex—mine and refinery—was commissioned in 2003 at a capital cost of roughly US$450 million, instantly becoming one of Namibia’s flagship industrial assets.
When Anglo American brought Skorpion online, the nameplate refinery capacity was 150,000 tonnes per year of Special High Grade (SHG) zinc.
In practice, output averaged between 130,000 and 150,000 tonnes in its early years, before declining as the orebody aged and grade fell.
By the time Vedanta Resources acquired the asset in 2010, production was closer to 90,000 tonnes per year, with a forecast that the life-of-mine could be extended through further pit cutbacks and possible feed blending from satellite deposits.
Under Vedanta Zinc International, Skorpion’s reported output in 2018 was around 84,000–90,000 tonnes, although the refinery still had the technical capacity to run higher if ore feed were available.
Seven years after commissioning, Anglo exited the zinc business. In December 2010, Vedanta Resources (through Sterlite) bought Skorpion as part of a larger zinc package, paying about US$707 million for the mine itself within a US$1.338 billion portfolio deal.
It slotted the Namibian operation into “Vedanta Zinc International,” alongside assets in South Africa and Ireland. The new owner promised life extensions, higher throughput and a second act for a deposit many assumed was nearing its end.
For a time, production held up. Company guidance and releases in FY2018 put Skorpion’s refined output around 84–90 kt for the year, with quarterly prints near 22 kt before the geology began to bite.
The refinery’s nameplate hovered near 90 ktpa. Management talked up incremental gains even as geotechnical headaches multiplied on the mining side.
But the rock mass wouldn’t cooperate.
In late 2019, a significant slope failure in the central pit choked the ore supply, and the refinery shifted into a stop-start mode; maintenance shutdowns were pulled forward, and operations sputtered.
By the end of March 2020, after a series of pit wall collapses, Skorpion was placed into care and maintenance.
Internal filings and environmental reports recorded the exact stark cause: repeated slope failures that left the open pit unsafe and the operation without a viable mine plan.
Vedanta’s public stance for the next few years was that Skorpion could restart—after dewatering, redesigning the pit, and later converting the plant to treat sulphide feed from regional sources.
Restart dates slipped with each passing season. Meanwhile, site conditions worsened.
Independent investigators who visited in 2025 described a waterlogged, equipment-stripped mine, workshops gutted, tailings and dumps without visible rehab, and a refinery with corroded tanks, dry circuits, and no power supply.
They concluded the “restart” would require an effective rebuild rather than a modification.
The finances were no sturdier. A new dossier in August 2025 argued that Vedanta had booked only about US$15–16 million (≈ N$282 million) for decommissioning and site restoration—an amount critics said wouldn’t begin to address the pit failure scar, let alone tailings, waste rock, drainage, security and basic stabilisation.
For context, closure at Australia’s Century zinc mine—bigger, but comparable in complexity—has been guided in the hundreds of millions of dollars, highlighting how small Skorpion’s provision looked against any plausible rehab bill.
The report warned that, once residual inventory was sold, Skorpion would be tipped into liquidation, leaving the Namibian state with environmental liabilities and little recourse to chase funds abroad.
Looked at over two decades, Skorpion’s story is a study in extremes.
It starts with technological audacity: a purpose-built SX-EW refinery processing oxide zinc ore that few elsewhere could manage, a capital-intensive bet that paid off for years.
It continues with an ownership handover at the top of the last commodity cycle and a series of life-of-mine stretch goals that kept the metal flowing.
And it ends in the hard physics of geomechanics and cash flow: pit walls that wouldn’t hold, a refinery starved of feed, and a balance sheet provision for closure that—measured against what’s on the ground—reads more like a rounding error than a plan.
Today, the Skorpion complex stands as a rusting cautionary tale on Namibia’s southern horizon—a reminder that mines don’t just run out of ore; they can be undone by geology, governance, and the gap between promises and provisions.
Whether anyone will shoulder the cost to make the site safe and whole again is no longer a question of engineering. It’s a political and financial one, and the meter is still running.
