The Australian competition regulator hopes to decide on a proposed iron ore joint venture between Rio Tinto and BHP Billiton by the end of May, the head of the regulatory body said on television on Tuesday.

The Australian Competition and Consumer Commission, which began its probe in December, had first planned to hand down its decision in February, then raised concerns in March about the plan by the world's second- and third-largest iron ore miners.

Read the full article.

See our latest Iron ore prices and graphs