BHP Group’s (ASX:BHP) copper production fell short of market expectations in the September quarter, with weaker output across its major operations weighing on an otherwise mixed start to FY2027.
Bank firm Barclays (LSE:BARC) reports that the mining giant produced 401,000 tonnes of copper in Q1, representing a 19% decrease year-on-year and 7% below consensus estimates.
Group production on a copper-equivalent basis was 1% below expectations, although BHP maintained its FY27 production and unit cost guidance.
Operational challenges affected several key assets. This includes the Escondida Mine in Chile, where production fell 23% year-on-year to 253,000 tonnes, 8% below consensus.
Lower throughput, winter weather, maintenance, reduced ore grades, and a previously reported fatality-related stoppage contributed to the decline.
Production at the Spence Mine was also 12% below expectations amid maintenance requirements and ongoing recovery challenges, while BHP’s Copper South Australia division missed consensus by 14%. This comes after a conveyor belt failure occurred at the Carrapateena operation, resulting in seven weeks of lost production.
Despite the softer quarter, BHP maintains its FY27 copper production guidance of 1.65 million tonnes (Mt) to 1.8Mt of copper (Cu).
Barclays says the unchanged outlook suggests limited revisions to consensus earnings forecasts at this stage.
Revolver Resources
These latest findings highlight operational challenges facing even the world’s largest diversified miners as they seek to sustain copper output from established assets.
With production at several of BHP’s major operations falling short of expectations simultaneously, the September quarter underscores the importance of execution, ore grades, and processing performance in determining supply.
For copper developers and explorers, the result offers a reminder that bringing new supply to market will depend on demand, commodity prices, and the industry’s ability to develop projects capable of delivering reliable production.
On the development front, Revolver Resources (ASX:RRR) is nearing production via its Diane Project in Queensland.
Diane is a historical mine that produced 63,758 tonnes of copper ore with an average grade of 22.7% Cu between 1979 and 1983.
Managing Director Pat Williams previously told Mining.com.au that the company has been on a nearly two-year journey conducting studies, engineering, and planning to get ready for construction and operations.
“We’re on the cusp of that right now. We’re planned, designed, engineered, permitted, and we’re ready to go. We just need to close out funding and get going,” Williams said.
“We’re certainly constructing this year, commissioning this year. We may see a little bit [of copper production] towards the end of the year, but we’re on track to commence and get going.”
Revolver also owns Project Osprey, which contains iron oxide-copper-gold (OCG) and Mount Isa-style mineralisation systems.
Lincoln Minerals and Future Metals
BHP’s production shortfall also puts a spotlight on the pipeline of future copper supply.
As established mines navigate operational disruptions, explorers are working to identify and advance deposits that will underpin the next generation of production.
This includes Lincoln Minerals’ (ASX:LML) Minbrie Copper Project in South Australia’s Eyre Peninsula.
In August, the company completed aircore holes across the project, confirming that mineralisation continues up dip at the Eagle Ridge discovery within Minbrie.
Lincoln says it plans to test the mineralisation down dip and along strike through targeted diamond drilling in the December quarter.
The company controls 17km of target stratigraphy at Minbrie, including about 1.7km of untested strike at Eagle Ridge. A review and re-assaying of the historical core in 2025 identified copper and base metal mineralisation that had not been tested during earlier iron ore exploration.
Future Metals (ASX:FME) also owns an exploration portfolio in the Alice Downs Corridor — a copper-platinum group metals-nickel sulphide position within 20km of the Panton Project in Western Australia.
The majority of the project lies under cover, which has limited the effectiveness of historical surface sampling. There is potential for blind deposits with no surface anomalism.
In September, Future Metals defined a maiden copper-nickel-gold exploration target at the Eileen Bore Main prospect.
The target comprises 12–15Mt grading 0.35–0.45% Cu, 0.15–0.22% nickel (Ni), and 0.10–0.15 grams per tonne gold (Au), equivalent to 0.62–0.86% copper-equivalent (CuEq). It represents about 74,900–128,300 tonnes of contained CuEq metal.
Reverse circulation drilling is planned next year, alongside an integrated review of the broader 18km Alice Downs Corridor to refine existing targets.
BHP’s quarterly shortfall is not proof of a looming copper deficit, but it highlights the challenge of sustaining production from existing mines.
However, for explorers and developers, there is an opportunity to contribute to the next generation of copper supply.
Write to Aaliyah Rogan at Mining.com.au
Main image: BHP
