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O3 Mining Awarded UL ECOLOGO® Certification for Responsible Mineral Exploration

TSXV:OIII | OTCQX:OIIIF - O3 Mining TORONTO, Sept. 7, 2021 /PRNewswire/ - Aligned with our commitment to sustainability, O3 Mining Inc. (TSXV:OIII) (OTCQX:OIIIF) ("O3 Mining" or the "Corporation") is proud to announce that it has received UL 2723