Vancouver, B.C. – August 9th, 2018: San Marco Resources Inc. (SMN: TSX-V) (“San Marco” or the “Company”) announces it has signed an earn-in agreement (the “Agreement”) with a wholly-owned subsidiary of Antofagasta plc (“Antofagasta”) over San Marco´s 100% owned Chunibas Project in Sonora State, Mexico (the “Project”).