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SUBSIDENCE MONITORING DATA <br />Semi-annual Report, January -June 1993 <br />Twentymile Coal Company, Foidel Creek Mine <br />Monitoring Line 3000 <br /> Survey Elevations (ft) <br /> <br />Map23A <br />Profile Pre-mining <br />Elevation Previous <br />Report <br />Subsidence <br />Point Distance Northin Eastin ft N/A 03/24/93 06/23/93 This Period Total <br />3023 0 37531.22 8521.257 6781.07533 6781.03 6780.993 -0.1 -0.1 <br />3022 48 37529.79 8569.481 6781.339 6781.281 6781.234 -0.1 -0.1 <br />3021 95 37527.12 8616.686 6778.39233 6778.342 6778.298 -0.1 -0.1 <br />3020 149 37530.12 8670.54 6787.499 6787.436 6787.388 -0.1 -0.1 <br />3019 197 37530.81 8718.273 6802.826 6802.753 6802.719 -0.1 -0.1 <br />3018 249 37530.77 8769.794 6810.88633 6810.797 6810.754 -0.1 -0.1 <br />_ __ <br />3017 ___ <br />300 37530.79 __ <br />8821.278 6819.04367 6818.94 6818.905 -0.1 -0.1 <br />3016 349 37530.57 8869.819 6825.266 6825.127 6825.088 -0.2 -0.2 <br />3015 399 37530.67 8920.428 6831.99367 6831.796 6831.763 -0.2 -0.2 <br />3014 448 37531 8969.591 6837.13967 6836.877 6836.846 -0.3 -0.3 <br />_ <br />3013 497 37531.11 9018.439 6839.63967 6839.268 6839.233 -0.4 -0.4 <br />3012 549 37530.64 9070.441 6844.794 6844.227 6844.19 -0.6 -0.6 <br />_ <br />3011 574 37530.52 9094.792 6847.23433 6846.532 6846.493 -0.7 -0.7 <br />_ <br />3010 648 37530.06 9169.646 6850.224 6848.994 6848.953 -1.3 -1.3 <br />_ <br />3009 723 37530.72 9244.664 6853.60533 6851.751 6851.704 -1.9 -1.9 <br />3008 799 37530.88 9319.957 6856.72733 6854.314 6854.236 -2.5 -2.5 <br />3007 872 37530.74 9392.74 6866.19467 6863.389 6863.31 -2.9 -2.9 <br />3006 946 37531.16 9467.596 6877.44533 6874.382 6874.302 -3.1 -3.1 <br />3005 1021 37532.34 9543.063 6885.442 6882.119 6882.029 -3.4 -3.4 <br />3004 1077 37531.13 9598.33 90.934 <br />68 6887.491 6887.388 -3.5 -3.5 <br />3003 1179 37530.89 9699.995 _ <br />6900.88 6897.335 6897.255 -3.6 -3.6 <br />3002 1279 37531.0_3 9800.246 __6905.465 6901.938 6901.831 -3.6 -3.6 <br />3001 1376 37531.91 9896.774 6911.053 6907.607 6907.507 -3.5 -3.5 <br /> <br />