Atico Mining Corporation announced additional positive results for the exploration program initiated in 2023 being carried out in an area of historical mining to expand tonnage at the El Roble mine. In addition, the Company reports the results for seven diamond drill core holes, which included 4.45m of 5.17% Cu, 10.47g/t Au and 4.90m of 9.35% Cu, 2.94 g/t Au. Exploration Drilling Program: The goal of the current surface and underground drilling program at the El Roble mine is to define zones of mineralization within the extent of main historic massive sulphide body that were not exploited by previous operators and also to expand the historically identified resource.

During the first quarter of 2023, the Company began a drill program to test the main mineralized body and the immediately adjacent area. A total of 7,880 meters of drilling were completed during this program, of which final results for the remaining drill holes are still pending and will be reported as soon as the assay results for mineralized intercepts are received. El Roble Mine: The El Roble mine is a high grade, underground copper and gold mine with nominal processing plant capacity of 1,000 tonnes per day, located in the Department of Choco in Colombia.

Its commercial product is a copper-gold concentrate. Since obtaining control of the mine on November 22, 2013, Atico has upgraded the operation from a historical nominal capacity of 400 tonnes per day. El Roble has Proven and Probable reserves of 1.00 million tonnes grading 3.02% copper and 1.76 g/t gold, at a cut-off grade of 1.3% copper equivalent with an effective date of September 30, 2020.

Mineralization is open at depth and along strike and the Company plans to further test the limits of the deposit. On the larger land package, the Company has identified a prospective stratigraphic contact between volcanic rocks and black and grey pelagic sediments and cherts that has been traced by Atico geologists for ten kilometers. This contact has been determined to be an important control on VMS mineralization on which Atico has identified numerous target areas prospective for VMS type mineralization occurrence, which is the focus of the current surface drill program at El Roble.