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iii iiiiiiiiiiiu iii <br />999 <br />COLOWYO COAL COMPANY <br />GENTLEMEN: <br />[ This report provides recommendations for <br />the preliminary design a[ waste dumps, <br />including slope angles and embankment heights, <br />I proximity of waste dumps to pit slopes, and <br />stability of dragline on spoil banks. Also <br />included are the field and laboratory data <br />I collected in the course of the investigation. <br />W. A. WAHLER AND ASSOCIATES <br />6" C// <br />I J. P. Connell <br />I Hager, Mining Engineering <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />1 <br /> <br />