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Highwall Reduction <br />Assume 12 ft. maximum highwall <br />Cut and fill to 3H:1V <br />Approximate pit perimeter = 9,000 Ift. <br />Volume of material to be moved calculated: <br />V = 9,000 Ift. X 54 ft.2 = 486,000 ft.3 =18,000 yd S. 3 <br />HiCFh%AlnII <br />Fill <br />12 ft. . <br />18 ft. 18 ft.