Copper Mountain Mining Corporation, a formerly independent Canadian resource company focused on the mining, exploration, and development of copper-gold-silver properties, operates as a wholly-owned subsidiary of Hudbay Minerals Inc. following its acquisition in 2023 and the subsequent consolidation of full ownership of its flagship Copper Mountain mine in British Columbia in April 2025. The company centers its activities on the open-pit Copper Mountain mine located 20 kilometers south of Princeton, British Columbia, which spans approximately 6,354 hectares across 135 crown-granted mineral claims, 145 located mineral claims, 14 mining leases, 12 fee simple properties, and seven cell claims; the mine employs a conventional crushing, grinding, SAG mill, ball mill, pebble crusher, and flotation circuit with a 45,000 tonnes per day processing capacity to produce copper concentrates with gold and silver by-products. Originally founded in 2006 and headquartered in Vancouver, British Columbia, the company previously held a 75% interest in the mine alongside Mitsubishi Materials Corporation until Hudbay acquired the remaining 25% stake for an initial US$4.5 million plus deferred and contingent payments totaling up to US$44.25 million and assumed approximately US$104 million in related loan obligations, enhancing Hudbay's copper production profile in a tier-1 jurisdiction with projected output increases to 60,000 tonnes annually by 2027.