Biden himself has said little about why his administration has blocked some mines while touting the need to boost domestic production of critical minerals.
The bid by a green billionaire to buy Australia's most polluting company may have stumbled at the first hurdle, but it's likely the race is far from over, writes Clyde Russell.
Costs were up "mainly due to lower gold production, the drawdown of ore stockpiles at certain operations, higher operating costs and inflationary pressures," the company said.