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USLE calculation of premining and postming soil loss rates at three locations on <br />Carbon Junction Mine ( locations shown on attached map) <br />Location - Soil loss <br />natural/disturbed R K LS C P (tons/ac/yr) <br /> <br />North Pit - natural 40 0.28 28.73 0.010 1.00 3.22 <br />North Pit - disturbed 40 0.35 4.66 0.042 0.90 2.47 <br />PRSA - natural 40 0.28 43.81 0.010 1.00 4.91 <br />PRSA - disturbed 40 0.35 7.89 0.028 1.00 3.04 <br />Equipment yard - natural 40 0.28 2.43 0.040 1.00 1.09 <br />Equipment yard - <br />disturbed 40 0.35 0.43 0.120 1.00 0.72