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\~ <br /> <br />Final Report <br />Geotechnical Design and Operational <br />Considerations for Highwall Mining, <br />Seneca IIW and Yoast Areas, <br />Seneca Mine <br />Submitted to: <br />Mr. Robert J. Shevling, P.E., P.G. <br /> <br />Engineering Manager <br />Seneca Coal Company <br />P.O. Box 670 <br />Hayden, CO 81639 <br />Submitted by: <br />]\SA Engineering, Inc. <br />15000 VV Sixth Ave.. Suite l00 <br />Golden, CO 8040] <br />(303)277-9920 <br /> <br />June 16, 2003 <br />