The company's COO of six years, Paul Keller, has moved to the role of VP of major projects and technical support, continuing to lead optimisation and expansion initiatives at operations.

The COO position has been given to Bryant Schwengler, who was general manager at Trevali's copper-lead-zinc mine in New Brunswick, Canada.

Finally, Gerbrand van Heersen has also been appointed as senior vice president of business initiative/development. He was previously CFO of Rosh Pinah Zinc Corp.