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The primary work completed to date was performed by AngloGold Ashanti (AGA) in 2006-2007. AGA carried out a modern and integrated exploration program consisting of stream geochemical sampling, rock sampling, mapping and airborne geophysics. This detailed exploration program included a 2006 diamond drilling program which intersected and defined three gold-copper porphyry mineralized zones - Dos Quebradas South, Manzanillo (formerly named Mandeval), and La Cumbre all located within the Quinchia concession. Fifteen holes were drilled to an average depth of 250 metres totalling 4090 metres.
La Cumbre porphyry was successfully tested by five drill holes resulting in the presence of widespread, low grade gold mineralization. Of the drill holes, a significant discovery was made at La Cumbre from hole DD-008 ('Discovery Drill Hole 8'). This hole intersected from 4.00 metres down hole, 278.65 metres of 0.74 g/t gold and 0.14% copper. This intersection was followed up with hole DD-018 which was collared and drilled 250 metres to the south. Significant low-grade gold mineralization was confirmed at surface and intermittently continued to 520 metres depth.
The historic drill program determined that La Cumbre porphyry target remains open at depth and to the north, south and east directions. Gold was intersected primarily from at or near surface in all drill holes and remained in mineralization at the end of 4 of the 5 drill holes.