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BLUE RIBBON COAL COMPANY <br />BENCH PIEZOMETER MEASUREMENTS <br /> P-1 P-2 P-3 P-4 <br />6/85 -21.5 -48.2 <br /> -21.8 -48.3 <br /> -21.8 -98.5 <br /> -21.6 -47.6 -32.1 <br /> -20.1 -49.1 -36.7 <br /> -20.6 -49.6 -40.3 -20.3 <br />12/85 -21 -50.1 -42.7 -21.3 <br /> -21.4 -44.6 -21.9 <br /> -21.5 -45.4 -22.3 <br /> -21.7 -46.1 -23.5 <br /> -21.7 -46.3 -23.6 <br /> -21.5 -46.7 -24.5 <br />6/86 -22.6 -46.8 -25.5 <br /> -21.7 -47.4 -26.6 <br /> -21.6 -47.5 -26.1 <br /> -16.2 -47.7 -25.9 <br /> -16.7 -47.3 -26.4 <br /> -14.7 -44.3 -27.2 <br />12/86 -14.2 -43.4 -27.2 <br /> -14.1 -42.9 -27.5 <br /> -19 -42.5 -27.9 <br /> -13.9 -42 -28.3 <br /> -13.9 -43.9 -28.5 <br /> -14 -45.7 -28.7 <br />6/87 -19.1 -47.6 -29 <br /> -16 -47.9 -29.1 <br /> -17.8 -48.1 -29.2 <br /> -19.7 -48.4 -29.4 <br /> -19.8 -48.8 -29.1 <br /> -19.9 -49.4 -28.9 <br />12/87 -20 -49 -28.6 <br />