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Highwall Reduction <br />Assume 40 ft. maximum highwall <br />Cut and fill to 31-1:1V <br />Approximate pit perimeter = 21000 Ift. <br />Volume of material to be moved calculated: <br />V =2,000 Ift. X 21400 ft.? = 4,800,000 ft.3 =177,,778 yds. 3 <br />Fill = 21400 ft.2 <br />Highwall <br />Cut <br />I <br />I <br />40 ft. <br /> <br />60 ft. <br />60 ft.