Cadia Gold Mine near Orange in the central west of New South Wales has not mined any ore for almost two weeks after it halted underground work on July 22.

One of the largest gold mines in the world has been told it must comply immediately with clean-air laws or risk further action, including licence suspension and court orders.

Planning approval has been granted for a $2 billion expansion of the Cadia Valley gold and copper mining complex near Orange, the NSW government says. Govt approves mine expansion near Orange.