Hathor Exploration Limited
TSX VENTURE : HAT

Hathor Exploration Limited

August 11, 2006 11:27 ET

Hathor Exploration Limited: High-Resolution Airborne Magnetic Survey Started on Russell South Property

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Aug. 11, 2006) - Hathor Exploration Limited ("Hathor") (TSX VENTURE:HAT) is pleased to announce that it has started a high-resolution, airborne tri-axial gradiometric survey in the area of its Russell South property. Results obtained from this survey will be used to help identify and map favourable structural features and lithostratigraphic units, which are key elements in the search for unconformity-related uranium deposits in the Athabasca Basin of northern Saskatchewan.

The survey is being performed by Goldak Airborne Surveys of Saskatoon, SK. Goldak has been providing exploration geophysical services for over 35 years and was the first survey company to offer fixed-wing 3-axis magnetic gradiometer surveys in North America. Goldak are recognized as experts in this field and their services are consistently used for uranium exploration in the Athabasca Basin by many companies including AREVA Resources Canada Inc. (formerly COGEMA Resources Inc.) and Cameco Corporation.

The Russell South property is comprised of eight claims totalling 25,919 hectares (64,047 acres), that are either 90% or 100%-owned by Roughrider. This property is centred some 20 km northeast of the formerly-producing Key Lake mine and approximately 50 km southwest from Cameco and AREVA's McArthur River mine. At the McArthur River mine, NI 43-101 compliant proven and probable ore reserves average 24.28% U3O8 - the equivalent of about 40 oz gold/tonne using July 31, 2006 spot metal prices.

The Russell South property covers both the Western Wollaston geological domain (the geology that hosts the McArthur River mine) and also the Western Wollaston - Eastern Wollaston Transition Zone geology that is an important ore-forming parameter in the uranium metallogenesis at the Maverick Zone on the adjoining Moore Lake property of International Uranium Corporation ("IUC") and JNR Resources Inc. Since 1999, their property has been aggressively explored with over 80,404 metres of diamond drilling in 224 drill holes and exploration continues with 3 drills currently on site. This transition zone is marked by a magnetic signature that the Goldak survey should outline in significant detail.

Magnetic gradiometry refers to the practice of measuring 3 orthogonal magnetic gradients along with the total field measurement to more completely describe the magnetic field over a specific area. Sophisticated acquisition and processing techniques are required to ensure that the small gradient signals are accurately measured. Goldak utilizes extensively modified and field proven Piper PA-31 Navajo aircraft with state of the art hardware and navigation systems. Threedimensional navigation is used whenever possible to ensure consistency from line to line, and their GPS based gradient rotation or "ADS system" determines the attitude of the aircraft and rotates the measured gradients to remove the effects of aircraft maneuvers or crosswinds. The result is a consistently oriented vector set, which increases the value of the gradients over non-rotated datasets.

The main product of any magnetic survey is a gridded total field map, and the major advantage of good gradient information is the possibility of dramatically improving the quality of that grid. Standard gridding methods are poor at "connecting the dots" when interpolating between lines. Linear trends may appear as boudinage or, worse, a series of short parallel features trending perpendicular to the line direction. Goldak's Gradient Variable Trend or "GVT" Gridding method utilizes the horizontal gradient vector to determine the local trend of the data and ensures that these trends are honoured. This results in a much more realistic looking grid with better continuity between dataset lines.

Gradient information is also useful during the interpretation of the data. Inversion, modeling and many advanced processing techniques require gradient information. Independently measured gradients provide more detail and more robust results than gradients derived from a single total field measurement. The measured gradients can also be integrated to yield an anomalous total field map which is free of diurnal and regional effects.

For more information on Hathor, its subsidiary Roughrider Uranium Corp. and their projects please visit our web site at http://www.hathor.ca or contact Stephen Stanley at 604-684-6707.

Hathor Exploration Limited

Stephen G. Stanley, Director


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Contact Information

  • Hathor Exploration Limited
    Stephen Stanley
    Director
    (604) 684-6707
    (604) 684-9277 (FAX)
    www.hathor.ca