2010-12-17_REVISION - C1981019 (129)

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Collom Area Geology Pre - Feasibility Report 0 7.0 Correlation, Geological Database and Geological Modeling 7.1 Seam Correlation Upon the conclusion of the 2004 Exploration Program, the Collom Exploration Team correlated the newly acquired drill hole data with respect to existing seam correlations. This was a significant body of work because few of the pre - existing drill holes in the CMA penetrated seams below the °GABC" series. Therefore, correlation of the seams below the °GABC' required more effort than the seams above. The Collom Exploration team prepared cross - sections using the geophysical logs of all available drill holes to guide the correlation. Changes to correlations were noted on drill hole printouts and then updated in the drill hole database. The Collom Exploration Team tied the seam correlations from the Collom • Area on the west side of Wilson Creek to the Colowyo mine area on the east side of Wilson Creek. The Collom exploration team also tied the correlations to additional drilling data located west of the CMA. Most of the pre -2004 drill hole data did not contain any lithological data other than coal and undifferentiated stone. Therefore, during the correlation process, the Collom Exploration team reviewed the geophysical logs of the older data and logged primary sand bodies, depths of weathering and burned zones of all the drill hole data west of Wilson Creek. These items were also noted on drill hole printouts and added to the drill hole database. As part of the correlation process, the Collom Exploration Team reviewed the extent of each seam with respect to burn limits. Using the results of the 2004 drill data and aerial images, the Collom Exploration team updated the burn lines extents for each seam. These extents were then transferred to • August 2005 Page 25 of 38