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SUBSIDENCE MONITORING DATA <br />Semi-annual Report, January -June 1991 <br />Cyprus Empire Coal Corporation, Eagle Mine No. 5 <br />S-Series Line (perpendicular) <br /> 03/1988* Surve Elevations (ft) <br /> Profile Pre mining Previous <br />Monitoring Distance Elevation Survey Subsidence (ft) <br />Point (ft) Northin Eastin (ft) 11/16/90 04/17/91 This Period Total <br />S1 D 402299.8 1408229.6 7160.6 7157.2 7154.1 -3.0 -6.7 <br />S2 100 402200.1 1408218.5 7175.3 7169.0 7166.7 -2.2 -8.6 <br />S3 200 402100.8 1408208.0 7186.0 7171.4 7176.4 -1.0 -9.6 <br />S4 300 402001.5 1408196.9 7195.6 7187.0 7186.4 -0.6 -9.2 <br />SS 400 401901.6 1408186.3 7203.4 7194.6 7194.2 -0.4 -9.2 <br />S6 500 401802.9 1408175.9 7210.2 7202.5 7202.2 -0.3 -8.0 <br />S7 600 401703.9 1408165.1 7216.5 7212.3 7212.1 -0.2 -4.4 <br />S8 700 401605.3 1408154.6 7226.5 7224.1 1223.9 -0.2 -2.5 <br />S9 800 401506.2 1408144.2 7238.2 7236.6 7236.5 -0.1 -1.8 <br />S10 900 401406.8 1408134.0 7251.3 7250.2 7250.1 -0.1 -1.2 <br />S11 1000 401307.2 1408123.5 7263.4 7262.8 7262.7 -0.0 -0.1 <br />S12 7100 401207.1 1408113.6 7274.6 7274.1 7274.1 -0.0 -0-5 <br />S13 1150 401157.2 1408108.1 7279.4 7278.9 7278.9 -0.0 -0.4 <br />S14 1210 401097.7 1408101.7 7284.9 7284.5 7264.5 0.0 -0.3 <br />S15 1240 401067.4 1408098.3 7286.9 7286.6 7286.6 0.0 •0.3 <br />S16 1340 400967.9 1408087.5 7292.4 7292.1 7292.2 0.0 -0.3 <br />S17 1440 400868.8 1408076.8 7294.5 7294.3 7294.4 0.1 -0.1 <br />• All pre-mining elevations represent post-F-seam mining surface elevations <br />