Copper Ridge Explorations Inc. has announces that it has completed a five hole 1537m drill program at its Duke Island copper-nickel-platinum-palladium (Cu-Ni-PGE) property in SE Alaska. The company has the right to earn up to a 65% interest in the property from Quaterra Resources Inc. Best results from the program included .294% copper and .075% nickel over 4.9m and .148% copper and .039% nickel over 13.4m over two separate intervals in hole DK10-08. Despite drilling to depths of up to 468m, the targeted basal contact of the mineralized intrusion was not encountered. The drilling determined that zoning within the ultramafic complex is more complex than anticipated and that what had been thought to be the basal contact, as interpreted through several geophysical techniques, was in fact rafts of partially assimilated sedimentary rocks. The combination of high sulphide content and graphite related to the sediments produced strong electromagnetic conductors.