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SUBSIDENCE MONITORING DATA <br />Semi-annual Report, July -December 1992 <br />Cyprus Empire Coal Corporation, Eagle Mine No. 5 <br />A-Series Line (perpendicular) <br /> (1, 2) Surve El evations ft <br /> Profile Pre-mining Previous <br />Monitoring Distance Elevation Report (2) Subsidence ft <br />Point ft Northin Eastin ft 06/17/92 0929/92 This Period Total <br />Al 0 404287.8 1404480.0 6551.3 6551.0 0.0 6544.6 -0.4 -0.7 <br />A2 50 403394.5 1404266.4 6555.1 6554.7 0.0 6548.0 -6.7 -7.0 <br />A3 100 403345.3 1404260.5 6559.2 6558.9 0.0 6552.3 -6.6 -6.8 <br />A4 150 403295.8 1404254.3 6564.0 6563.8 0.0 6557.1 -0.7 -0.9 <br />AS 200 403245.8 1404249.1 6569.0 6568.7 0.0 6561.9 -6.8 -7.0 <br />A6 250 403196.9 1404243.1 6573.7 6573.4 0.0 6566.4 -7.0 -7.2 <br />A7 300 403147.9 1404236.7 6578.5 6578.2 0.0 6571.1 -7.1 -7.4 <br />A8 350 403098.5 1404231.1 6582.3 - - <br />A9 400 403048.4 1404225.2 6587.9 6587.6 0.0 6580.5 -7.1 -7.5 <br />A10 450 402999.9 1404218.3 6592.0 6591.7 0.0 6585.0 -6.7 -7.0 <br />A11 500 402949.9 1404213.2 6596.2 6595.9 0.0 6590.6 -5.3 -5.6 <br />A12 550 402899.3 1404206.9 6600.3 6600.0 0.0 6596.9 -3.2 -3.4 <br />A13 600 402850.8 1404201.3 6605.3 6605.1 0.0 6603.5 -1.5 -1.8 <br />A14 650 402803.4 1404195.9 6610.4 6610.1 0.0 6609.2 -0.9 -1.1 <br />A15 700 402752.0 1404189.8 6617.3 6617.0 0.0 6616.4 -0.7 -1.0 <br />A16 750 402702.7 1404183.5 6626.9 6626.7 0.0 6626.1 -0.6 -0.8 <br />A17 800 402654.2 1404178.6 6639.7 6639.4 0.0 6638.9 -0.5 -0.8 <br />A18 850 402604.4 1404172.3 6652.7 6652.4 0.0 6652.1 -0.3 -0.5 <br />NOTES: <br />(1) All pre-mining elevations represent post F-seam mining surtace elevations as of 04/16/1991. <br />(2) Baseline elevations reduced by 0.15 ft to reflect new elevation for control point AMOS as of 09/30/1992. <br />31DEC92 <br />