Newcrest Mining has given an upbeat assessment of its damaged Cadia mine in New South Wales, but has confirmed the mine's gold production in fiscal 2018 will be lower than recent years.

Mining at Cadia has been halted for almost a month after a seismic event damaged parts of the underground mine on April 12 and the market has been eagerly awaiting updates given Cadia delivered 70 per cent of Newcrest's earnings before interest and tax in fiscal 2016.