Equinox previously forecast RDM production at 70,000-80,000 ounces of gold for this year or 11% of its consolidated production, based on the mid-point of the firm's production guidance of 625,000-710,000 ounces of gold.  

Guidance will be updated when RDM has resumed operations, the firm said. 

"Discussions with regulatory authorities are ongoing and the TSF raise contractor is ready to mobilize and commence work," the firm said. 

Equinox Gold expects that full operations could restart as soon as two months from the receipt of regulatory approval, which is anticipated during the second quarter of this year. 

RDM had a net asset value of C$245 million or C$0.73 per share, making up roughly 5.1% of company-wide net asset value, said Mike Parkin, an analyst at National Bank of Canada.  

BMO Capital Markets said it had adjusted its model to reflect 45 days of downtime in the second quarter and 60 days of downtime in the third quarter. leading to a 40% reduction in production for the mine this year.

"Our annual production forecast at RDM has been reduced to 41,000 ounces from from 69,000 ounces," it said.

RDM was shut down earlier this year due to the dam having more than acceptable water levels in it after Brazil's regulatory TSF requirements were revised. 

The firm highlighted the risk of regulatory approvals in a previous results release. 

The TSF has been designed and is operated to industry best practices and is regularly inspected and audited by independent parties and inspected periodically by Brazilian government regulators, the firm said.

Shares in the firm were 2.1% or C$0.15 higher at C$7.14, giving the firm a market valuation of C$2.1 billion. 

Equinox made a loss of US$19.9 million in the first quarter of this year.