BHP Billiton has announced second-quarter iron ore output rose to a record nine percent, driven by demand from China.
Iron ore output increased to 27.75 million metric tons in the three months ending 31 December from 25.4 million tons a year earlier, according to BHP.
The company also reports first production was successfully achieved at seven major projects including Koala underground diamond mine, Pinto Valley (copper in concentrate) iron ore mine Rapid Growth Project 3 and Ravensthorpe, which produces nickel.
BHP is currently trying to buy rival Rio Tinto - the world's third-largest mining company - for US$100bn.
BHP's three-for-one all share offer made in November was rejected by Rio on the grounds it undervalued its mines and future prospects.
By staff writer
