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[ferro-alloys.com]Mining giant BHP (ASX, LON, NYSE: BHP) has shelved a planned $2.5 billion expansion of its Olympic Dam copper, gold and uranium mine in South Australia after studies of the ore body revealed weaker than expected results.

While the mine yielded more than 50,000 tonnes of copper in the three months to Sep. 30 — the highest quarterly production since 2015 — BHP decided against proceeding with the brownfield expansion project.

“The studies have shown that the copper resources in the southern mine area are more structurally complex, and the higher grade zones less continuous than previously thought,” BHP said in a statement.

“We have decided the optimal way forward for now is through targeted debottlenecking investments, plant upgrades and modernisation of our infrastructure.”

BHP also slashed the operation’s copper production forecast from 350,000 tonnes a year to 300,000, after assessing more than 400 km of drilling samples. The company said it now had an “improved knowledge” of the ore body, adding that the long-term opportunity for Olympic Dam was unchanged.

“Our enhanced understanding of the resource in the Southern Mine Area and the promising results from Oak Dam provide strong foundations for unlocking the full growth potential of this asset,” BHP said.

This is not the first multi-billion dollar project at Olympic Dam the miner has walked away from in the past decade. In 2012, it put an already long-awaited expansion of the mine on the back burner as a result of falling commodity prices and higher costs.

­Andrew Mackenzie, the company’s chief executive at the time, even said the project would need a “technological miracle” to make it happen.

“Future-facing” metal

The world’s largest miner said it would continue to study longer-term options for growth. BHP is currently in the midst of a $2.5 billion expansion of its Spence copper mine in Chile, which was slated to open by the end of the year.

Covid-related disruptions, however, have moved first production date to early 2020, BHP said in April.

In the last four years, the company — already the world’s largest listed copper miner — has boosted exploration spending to find new deposits of the metal, used in construction, renewable energy and electric vehicles.

BHP became last year the top shareholder in Australian miner SolGold (LON:SOLG) (TSX:SOLG), which is developing the Cascabel copper-gold project in Ecuador. The asset has the potential to become one of the largest copper-gold assets ever discovered, with an estimated productive mine-life of 55 years.

That doesn’t seem enough for BHP. Its new chief executive, Mike Henry, said in February the company needed more “future-facing” metals, such as copper. A month later, chairman Ken Mackenzie said the miner was in a strong position to make acquisitions if there were opportunities because of coronavirus.

“I’m not sure if there will be any opportunities that will come from this, but if there are, we are actually in a position to act,” Mackenzie said.

The company has five major projects underway with a combined budget of $10.9 billion.

Potash cost blow out

One of BHP’s other growth projects, the Jansen potash project in Saskatchewan, Canada, remains on track for a final investment decision in mid-2021, BHP said.

(Mining.com)

• [Editor:王可]