PACIFIC RIDGE COMPLETES AIRBORNE MAGNETIC SURVEY AT MARIPOSA


An airborne magnetometer survey has been completed over a portion of Pacific Ridge Exploration Ltd.’s Mariposa gold property in the Yukon’s White gold district. The survey covered the area of six gold-in-soil targets detected during the 2010 exploration program, including the 3,500-metre-long by 600 m wide Skookum Jim gold anomaly.

The high-resolution aeromagnetic survey was conducted by Precision GeoSurveys Inc. of Vancouver, B.C., using a helicopter-mounted cesium vapour magnetometer. A total of 900 line kilometres were flown along 100-metre-spaced lines and 1,000-metre-spaced tie lines. Results are currently being processed and will be subsequently interpreted together with geochemical datasets.

Recent work by Pacific Ridge, and also by some companies within the White gold district, has shown that structural discontinuities are favourable hosts for gold mineralization. Both airborne and ground magnetic surveys have been successfully used as mapping tools for delineation of these structures, as well as alteration patterns and underlying rock types. The integration of geophysical results with gold-in-soil geochemical trends is therefore considered an effective method for identification of drill targets.

Follow-up ground magnetic and electromagnetic surveying will also be conducted in advance of this year’s drill program at Mariposa. This survey will be conducted at greater detail than the aeromagnetic coverage and will provide optimum definition of targets for initial drill holes. Commencement of drilling is planned for mid-June.

During the period to April 7, 2011, exercise of 15-cent share purchase warrants has resulted in the issuance of 1,205,643 common shares with funds received in the amount of $180,846.

The technical information in this release has been reviewed by Janice Fingler, PGeo, who acts as the company’s qualified person for the purposes of NI 43-101.

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