O3 Mining prefeasibility outlines 10-year mine life, $435M capex for Marban gold project

O3 Mining (TSXV: OIII; US-OTC: OIIIF) has completed a prefeasibility study for its 100% owned Marban gold project, demonstrating its potential to become the next gold producer in the mining region of Val-d'Or, Que. The study showed robust project economics...

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