SolGold faces a possible shareholder revolt as the mining heavyweights that backed the company and its huge Ecuadorian copper deposit grow increasingly frustrated by the management’s decisions.

BHP Group is SolGold’s biggest shareholder and Australian gold major Newcrest Mining is No. 2, having both positioned themselves for a seat at the table when it’s time to finance and build the project. Neither was pleased with SolGold’s decision earlier this year to sell a royalty stream — while the deal provided funding, it meant giving up a piece of future profits. The company has also faced setbacks in its mine-planning process.