South Australia's Olympic Dam has helped BHP to its highest gold haul in 14 years.

Gold shines for BHP

Iron ore, copper and petroleum may dominate the headlines, but BHP's output of gold has quietly hit a 14 year high.

Aurizon said it was writing down the value of its rolling stock - carriages and locomotives - by $29 million before tax.

Aurizon to cut 300 jobs

The freight rail operator has written off its investment in Aquila Resources and said it was shedding about 300 jobs in response to weak coal prices.

The big four banks lent $1 billion to Arrium.

Arrium's overseas bankers baulk at Whyalla loan

Arrium's overseas banks have sought clarification before signing off on a crucial $50 million federal government loan that is hoped will improve the viability of the company's loss-making Whyalla steel plant.

Northern Star boss Bill Beament reckons gold prices may run higher if Donald Trump wins his way to the White House.

US election a Trump card for gold

Gold prices will surge if Donald Trump is successful in winning his way to the White House, says one of Australia's fastest growing gold miners

Gutnick attends court in 2001.

Gutnick is once again a diamond in the rough

In his many legal disputes, Joseph Gutnick has always relied on Australian courts, even when dealing with his own close-knit religious community. Now those same courts may come back to bite him.

BHP Billiton appears to have missed its iron ore export target from Western Australia.

BHP set to miss iron ore target

BHP Billiton appears to have fallen short of its iron ore export target, with declarations by rival miners suggesting BHP has shipped less than 260 million tonnes from Port Hedland during the 2016 financial year.