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<br />SUBSIDENCE MONITORING DATA <br />Semiannual Report, January -June 1992 <br />Ttrtrerttymile Coal Comparry, Foidel Cn:ek Iliine <br /> 5 Eleva tions <br /> Prarnining Previous <br />Map23A Profile Elevation Report Subsidence <br />Pont Distance Nath~ Ea ft 12103/91 02/03/92 06RY1J92 This Peri Total <br />B.Series line (perp endicula <br />8-22 0 41951.3 12226.2 6822.8 6822.7 8822.8 6822.6 -0.1 -0.2 <br />8-21 50 419D3.3 12227.9 6825.2 6825.0 8825.1 6825.4 0.3 0.2 <br />8-20 100 418526 12228.8 8826.6 6826.5 6826.6 6826.8 0.3 02 <br />8-19 15D 41803.7 12227.9 6829.1 6829.D 8829.1 6829.3 0.3 0.2 <br />8-18 200 41752.8 12230.5 &631.5 6831.5 6831.6 6831.8 0.3 0.3 <br />8-17 300 41654.0 12230.3 6835.6 6635.3 6835.4 6835.6 0.2 -0.0 <br />B-1B 400 41553.9 12231.3 6837.2 683T.D 6837.1 6837.2 0.2 -0.D <br />8-15 500 41453.8 12233.5 6840.5 6640.4 8840.3 6840.5 0.2 0.0 <br />8-14 650 44303.9 12234.3 684T.5 6847.2 684T.2 6647.4 0.2 -0.1 <br />8-13 725 41229.7 12237.0 6849.6 6849.3 6849.2 6848.5 0.2 -0.1 <br />?~ 4 I 1100 4D8524 12242.1 6872.7 6868.9 6868.9 6869.0 0.1 3.7 <br />8-12 1450 40503.1 12242.9 6898.5 6895.2 6895.2 &6.952 -0.0 3.3 <br />8-11 1550 404027 12245.3 6903.7 6900.6 6900.5 8900.6 -0.0 -3.1 <br />8-10 1700 40251.9 12248.0 6907.7 6904.5 6904.5 6904.5 -0.0 3.2 <br />B- 9 1800 40151.3 12248.5 6911.7 6908.0 6907.9 6908.0 0.0 ~.7 <br />B- 8 1900 4DD522 12250.& 6915.5 6911.3 6911.2 8911.2 -0.1 X4.3 <br />& 7 2000 38952.8 12251.9 6920.5 6915.9 6915.9 8915.9 -0.0 -4.6 <br />8.6 2050 39903.0 12252.3 6923.3 6918.9 6918.9 6918.9 -0.0 ~.4 <br />B-5 2100 39854.5 12251.T &926.1 6922.2 6922.0 6822.1 -0.1 -4.0 <br />B- 4 2150 39803.3 12251.T 6929.6 6925.9 6925.9 6925.9 -0.0 3.7 <br />B- 3 2200 39751.6 12253.0 6933.5 6930.3 6930.2 &9302 -0.1 ~.3 <br />B- 2 2300 39652.0 12254.3 6935.3 Destroyed Destroyed <br />B- 1 2400 39553.3 12254.1 6943.2 694D2 6940.2 69402 -0.0 ~.0 <br />A-Series Line (cerrt erline) <br />Ar 2 0 48849.8 12040.6 6862.1 6858.3 6858.4 Noc surveyed -02 -4.0 <br />Ar 3 100 40851.4 12138.0 6867.3 6863.5 6863.3 Nat surveyed -02 -4.0 <br />h 4 200 40852.4 12242.1 6872.7 6868.9 6868.9 Nat surveyed -0.0 -3.8 <br />A- 5 300 408562 12340.8 6876.3 6872.5 6872.4 Not surveyed -0.1 -3.9 <br />A- fi 375 40853.3 12414.9 6878.5 6874.7 6874.6 Not surveyed -0.1 -3.9 <br />A- 7 465 40857.3 12506.1 6878.5 6874.8 6874.8 Not 0.0 -3.7 <br /> <br />