San Marco Resources Inc. announced that Phase 1 exploration drilling results from its 100% owned Chunibas copper/silver project, located in Sonora State, Mexico have been received. San Marco and a wholly-owned subsidiary of Antofagasta plc have entered into an earn-in agreement to jointly explore and drill test several copper-silver rich mineralized targets mapped on surface. Antofagasta is funding all activities during the Phase I exploration program, to a maximum of USD 700,000. Initial results from the program confirm the existence of a typical copper-silver Manto-Type system. This initial program consisted of approximately 1,640 metres of diamond drilling distributed over 7 shallow drill holes. Five holes tested 1.2 km of the NW-SE striking mineralized corridor, whilst the remaining two holes tested approximately 400m width along one NE - SW section perpendicular to the corridor. The initial drill campaign achieved and confirmed the down-dip and along strike continuity of alteration, mineralization and receptive rock units mapped on surface. Highlights of the mineralized intervals are as follows: Drill hole CHD18-05: 7.45 meters @ 0.1% Cu and 2.3 g/ton Ag; 22 meters @ 0.05% Cu and 0.7 g/ton Ag; Drill hole CHD18-06: 3.0 meters @ 0.08% Cu and 0.6 g/ton Ag; and Drill hole CHD18-07: 6.0 meters @ 0.06% Cu and 0.3 g/ton Ag.