Private equity firm Waterton Global Resource Management, which now owns about 7 percent of Hudbay, called meeting after the Canadian base and precious metals refused a proposal for board changes.
The company is also seeking direct talks with the country's government, as it's been excluded so far from negotiations between controlling shareholder, Barrick Gold, and President John Magufuli.
With its biggest stock overhang and a deal around its flagship asset in Indonesia close to being solved, the miner has said all options are open, even potentially a sale of the entire company.
BHP Billiton Ltd. is boosting sales of the top-quality nickel that’s needed for electric vehicle batteries, another sign that the world’s biggest miner is targeting more opportunities in the booming sector.