An investigation to determine the cause of the accident will be conducted.

The three deposits included in the FS have a combined measured and indicated resource of 22.9 million tonnes grading 1.5% copper and 2.2% zinc.

The company's 50,000-metre drill program has confirmed the Golden Bear discovery zone (D1) and intersected two new mineralized zones.

The latest US inflation data came in slightly lower than expected, which may ease fears that the Fed will be forced to begin tapering soon.

CEO Mark Bristow said the company will strike a deal should an appealing one present itself, which he described as a mine that can produce 500,000 ounces of gold annually "for a long time".

Shrinking reserves and mine lives could lead to more deals, says David Garofalo.

Global mined zinc production will grow at the fastest pace since 2012 in 2021.

The project has an initial capital estimate of $645 million, but it will pay for itself in the first 2.3 years of production.