Interview with President & CEO George Ogilvie. Arizona Sonoran Copper is developing the Cactus Copper Project in the U.S. and recently announced a partnership with Rio Tinto, which now holds 7% of the shares. Currently, mine engineers are working on the pre-feasibility study, which is expected to be released in late summer. This will be followed directly by the feasibility study and project financing. The company is also drilling on the immediately adjacent Parks/Salyer area and hopes for significantly larger total resource.