Drilling Continues At Old Sport Horizon---Successfully Identifies Two Off-Hole Anomalies After Down Hole Geophysics Completed
VANCOUVER, BC, May 18, 2007 -- Grande Portage Resources Ltd. (TSX-V GPG) ("Grande Portage" or "the Company") announces that it has collared 5 holes (holes MW07-48 to MW07-52) on the Old Sport Horizon and is in the process of starting the 6th hole (MW07-53).
The first hole, MW07-48, targeted resources defined by previous operators and successfully intersected the Old Sport Horizon from 584.00-587.53 metres; this interval averaged 0.63% copper, 0.45 g/t gold, 1.47 g/t silver and 40.69% iron over 3.53 metres. Included in this intercept is a higher grade interval assaying 1.27% copper, 0.79 g/t gold, 3.40 g/t silver and >50% iron over 0.76 metres.
The second hole of the program, MW07-49, was also designed to test previously outlined underground resources and lies approximately 160 metres south-southwest of hole MW07-48. This hole deviated from the intended track and intersected minor stringers and veinlets of magnetite and pyrite-chalcopyrite at the projected location of the Old Sport Horizon. The third hole, MW07-50 was located approximately 1100 metres south-southeast from hole MW07-49 and was intended to test the 41409 Zone as defined by underground drilling in the early 1970's. The 41409 Zone was defined by underground drilling from a development drift and is located approximately 120 metres beyond the southern limit of the underground mining development. This hole was abandoned at 30 metres depth in a fault zone. A second hole from the same location was then collared to test the same target, hole MW07-51. This hole deviated considerably from the intended track and by-passed the Old Sport Horizon due to the degree of deviation.
The final hole completed to date, MW07-52, was located approximately 660 metres south of hole MW07-50 and MW07-51 and was drilled to test the magnetic anomaly defined by the 2006 airborne survey that is coincident with the underground development. The hole was collared well past any historic underground development. The hole was abandoned at 443.8 metres in a fault zone, prior to reaching the Old Sport Horizon.
Crone Geophysics Identify Downhole Anomalies
The Company contracted Crone Geophysics and Exploration Ltd., of Mississauga, Ontario to complete borehole surveying of selected holes. Crone has completed their work and surveyed holes MW07-48 and MW07-51. The survey successfully identified large off-hole electromagnetic (EM) conductors at the projected depth of the Old Sport Horizon in both these holes. The Company is currently reviewing this data and will drill both of the anomalies.
Grande Portage has been exploring this area under the premise that there exists significant remaining tonnage at the old open pits peripheral to the magnetite zones and in the Old Sport Horizon either along strike extensions or within the old workings. The 2006 airborne geophysics completed confirmed potential strike extensions over 8 kilometres while a review of former reports suggest a copper cut off grade had been previously used to delineate mineable ore. Substantial amounts of mineralized skarn material remain untested.
Management
The Company wishes to announce that effective immediately, Alistair MacLennan will serve as Chairman of the Board, Ian Klassen will be President and George Nicholson, P. Geo. has been appointed Vice President, Exploration.
Warren Robb, P. Geo., and George Nicholson, P. Geo., are the qualified persons for this project, and have reviewed and verified the contents of this news release.
ON BEHALF OF THE BOARD OF DIRECTORS
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Alistair MacLennan, Chairman
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