Valterra Platinum Invests In Underground Mining At Mogalakwena To Unlock Higher Grade Ore Reserves

Image credit: Reuters

Mogalakwena in Limpopo province, north of Johannesburg, is the world's largest open-pit platinum group metals (PGM) mine, comprising five open pits. The ore body of its Sandsloot pit, where the underground mine is being developed, has higher grades of ore.

Platinum miners in South Africa have faced declining ore grades for years. To keep production going, companies have had to mine deeper underground, which makes operations more expensive and risky.

The mine is the crown jewel of Valterra's portfolio, contributing about 50% of the company's PGM production. The project to develop the Sandsloot underground mine is a nod of confidence in the future of PGMs, used primarily in autocatalysts and jewellery.

Prices of the white metals have mostly slid in the past two years, with demand hit by the rise of battery electric vehicles, which don't require them, leading miners to cut supply.

In July, the company said it had begun the feasibility study for the underground project with a targeted completion and investment decision in the first half of 2027.

"We're also envisioning a trial mining ...in the back end of 2026," Stephan Nothnagel, general manager of Mogalakwena underground mining studies, told reporters during a media tour of the mine.

"If it meets our capital allocation, we will be able to truck the first ore out of the top part of the ore body to the surface," Nothnagel said, adding that ramping up to a 3.6 to 4.5 million tonne a year operation was possible beyond 2030.

With the underground mine, Valterra hopes to achieve its targeted 10% to 50% overall increase in Mogalakwena concentrate production, it said in July.

Martin Poggiolini, executive head of corporate strategy, and Agit Singh, Valterra's head of processing operations, said the company is scaling up demand across existing markets such as hydrogen production and fuel-cell electric vehicles and creating demand in new segments.

"So we have really good confidence in the fundamentals around the PGM sector in the short term and certainly in the longer term," Singh said.