In October, China suspended purchases of Australian coal as Beijing continued to tightly control imports amid soured political relations with Canberra.
While the company had other projects in the country, the Bayan Khundii gold project went from greenfield prospect to being its main asset in roughly nine months.
The miner said it won't meet its coal export commitments due to the damage caused by cyclone Debbie, which struck Australia’s north-east coast last week.
Damage to rail lines in cyclone-hit Queensland have disrupted the shipment of between 15 million and 20 million tonnes of coking coal destined to Asia.