BHP Billiton has delivered a 12th consecutive first-half iron ore production record, and increased output in many other commodities.
In the December quarter, BHP Billiton increased its Western Australian iron ore output by 3 per cent (compared to the same period last year) to 42.2 million tonnes, bringing the half year total to 82 million tonnes.
Analysts were slightly disappointed by the figure, with many forecasting production between 45-49 million tonnes.
The world's biggest miner has recommitted to its forecast of 183 million tonnes of iron ore production this financial year, with a new piece of infrastructure now raising its port capacity to 220 million tonnes per annum.
BHP Billiton says its Queensland coal mines, many of which had been hit by industrial action, were finally nearing supply chain capacity towards the end of the December quarter, and the economies of scale resulting from that should push production costs down and boost profit margins.
The company says its overall metallurgical coal (used for steelmaking) production was up 5 per cent in the December quarter 2012 compared to the same period a year earlier.
BHP Billiton also recorded record production at its New South Wales coal mines, which produce thermal coal for power generation.
Overall, thermal coal output was up 8 per cent for the quarter, despite temporary outages at two US mines.
BHP also booked a 3 per cent rise in petroleum output, with a 5 per cent rise in crude oil and liquids, and a 2 per cent increase in natural gas production.
The company is expecting to produce the equivalent of 240 million barrels of oil this financial year.
The world's biggest miner also reported a substantial ramp up in production at its massive Escondida copper mine in Chile, with production expected to be up 20 per cent this financial year compared to last.
Olympic Dam copper production fell in the December half due to a planned smelter outage but, overall, the company's copper output was up 5 per cent for the quarter.
Uranium production was up 12 per cent, due to better recoveries from Olympic Dam.
Positive reaction Investors have generally welcomed the BHP Billiton report, with the company's shares up around 1 per cent to $36.94 in the first hour of trade.
Fat Prophets resources analyst David Lennox says the results are solid, given the global economic backdrop.
"One of China slowing, certainly one of global weakness, uncertainty in Europe in terms of their economic growth, uncertainty in the main markets of the US in terms of their economic growth as well," he said.
However, Mr Lennox says falls in commodity prices during the period mean those high volumes will not necessarily translate into strong revenues.
"Sales will benefit significantly for both companies (BHP and Rio Tinto) because of volume increases across their key commodity groups, however when they come to report there will be unfortunately be negative variances because prices between the periods will have actually weakened off, so they will not produce record revenue numbers this year," he added.
BHP Billiton announces its half year profit on the 20th of February.