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Collom Area Geology Pre - Feasibility Report <br />were generated and reviewed. Apparent anomalies in the contours were <br />investigated and the raw data reviewed and corrected, if necessary. <br />The drill hole database contains tools to view various permutations of seam <br />composite values. During the modeling process, those data with apparent <br />anomalies were reviewed to determine if a "better" composite value could be <br />obtained by including or excluding sample plies near seam contacts. When such <br />changes were determined to improve the composite quality, the database was <br />adjusted to reflect the changes. Some changes affected both the sample and <br />lithology data in the database. <br />After a comprehensive review of the coal quality data and database, the lithology <br />and quality data were re- exported from the database and re- modeled in <br />MineScape. A complete suite of dry basis coal quality isopleth maps reside in <br />Appendix I. <br />August 2005 Page 30 of 38 <br />