The appeals court upheld Florence Copper's right to mine its property within the town, and confirmed the awarding of $1.7 million in legal fees and costs to Florence Copper.
Negotiations over the 36-month contract have been lengthy and at times fractious, with members voting to reject a previous offer and strike on March 9.
A 200,000-strong Brazilian claimant group failed to resurrect a 5.0 billion pound ($6.9 billion) English lawsuit against the mining giant over the Fundão dam failure.