The Dugald River mine in North-West Queensland has delivered a 50 per cent lift in revenue as owner MMG reports record first-half financial results in 2026.

Profit after income tax across the group increased 141 per cent to $1.93 billion ($US1.366 billion) for the half year alongside record revenue, EBITDA and EBIT figures.

MMG runs the Las Bambas copper mine in Peru, the Kinsevere copper and cobalt mine in the Democratic Republic of the Congo, the Khoemacau copper mine in Botswana and the Rosebery polymetallic mine in Tasmania in addition to its Dugald River operation.

Dugald River, about 65km north-west of Cloncurry, produced 87,186 tonnes of zinc in zinc concentrate for the six months to June 30, up 3 per cent year-on-year.

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Revenue from the site increased by about $160 million ($US112.8 million) to more than $480 million ($US340.3 million) and EBITDA lifted 92 per cent to about $180 million ($US126.9 million).

The result was driven by higher mill throughput, consistently strong zinc recoveries above 90 per cent, stronger silver and zinc prices, and lower treatment charges, the company said.

On the other side of the coin, the first half of 2026 also saw higher production costs compared to the same time in 2025.

The $63 million ($US44.7 million) lift in expenses mainly stemmed from unfavourable foreign exchange rate movements and increased mining costs associated with higher development metres, greater ground support requirements and higher volumes of ore mined.

The company incurred additional rail and trucking costs of about $14 million due to rail disruptions caused by flooding during the period, while processing costs increased in line with higher volumes.

Dugald River remains on track to achieve its 2026 zinc production guidance of 170,000-180,000 tonnes of zinc in zinc concentrate.