Constantine Metal Resources shareholders on Tuesday approved the company’s acquisition by another junior mineral exploration company, American Pacific Mining.

The vote all but finalized the acquisition, which was announced in August but still needs to be approved by the Supreme Court of British Columbia. Once it’s finalized, Constantine shares will be delisted from the TSX Venture Exchange, a Canadian stock exchange.

Constantine operates and owns a minority share of the Palmer Project, an exploratory mixed-metals mining operation northwest of Haines and Klukwan. American Pacific’s largest project is the Madison copper-gold mine in Montana, under option to joint venture with a subsidiary of Rio Tinto Group, one of the world’s biggest mining companies.

American Pacific will own 45% of the Palmer Project, with Japan-based Dowa Metals and Mining owning the majority of the project. Dowa is fully financing the project’s $18 million 2022 budget, but American Pacific will have an opportunity to contribute funding by the end of the year to mitigate dilution.

Constantine Mining — the joint venture between Dowa and Constantine Metal Resources — has been gearing up to begin construction of a 1.25-mile-long underground ramp beneath Saksaia Glacier and a nearby mountain. The tunnel would allow the companies to obtain greater understanding of the mineral deposit and to develop a feasibility study that would inform a decision on whether to build a full-scale mine.

Constantine Metal Resources CEO and president Garfield MacVeigh said in an August paid commentary in the CVN that the current Palmer Project leadership team would stay intact and continue working with contractors, consultants and businesses in Haines.