Duterte's government has also ordered a stop to small-scale mining operations working outside the country's mining co-operatives system, a decision that touches gold miners.
The approval has been needed since President Vladimir Putin April signed a bill requiring Russian companies to delist their depositary receipts abroad.
The US Court of Appeals for the Ninth Circuit has declined to overturn a 2019 decision that blocked Hudbay Minerals' Rosemont copper project in Arizona.
Many of Korea Zinc’s renewable projects are in mining-heavy Australia, where billionaire resources magnate Andrew Forrest is planning a factory for making hydrogen-producing electrolyzers.