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<br />TABLE III-1 <br />SUBSIDENCE PREDICTIONS <br />u <br />MINING <br />METHOD LONGWALL AVG. <br />DEPTH (FT) AVG. SEAM <br />HEIGHT (FT) MAX. VERT. <br />SUBSIDENCE <br />(FT) MAX. HORIZ. <br />TENSILE <br />STRAIN* <br />LONGWALL LW1 550 8.5 6.4 7550 <br />D-SEAM LW2 700 8.3 5.9 5500 <br /> LW3 765 8.3 5.6 4800 <br /> LW4 925 8.6 5.2 4100 <br /> LW5 990 8.8 5.1 3850 <br /> LW6 1090 9.2 5.9 3790 <br /> LW7 1210 9.0 5.2 3000 <br /> LW8 1290 8.5 4.6 2670 <br /> LW9 1400 8.5 4.2 2400 <br /> LW10 650 7.6 6.6 6600 <br /> LW11 500 7.9 7.0 9100 <br /> LW12 400 8.5 7.7 12400 <br /> LW13 1000 6.5 5.0 3300 <br /> LW14 900 6.8 5.6 4000 <br /> LW15 850 6.4 5.4 4100 <br />LONGWALL LW1B 280 7.6 6.8 15900 <br />B-SEAM LW2B 400 7.7 6.9 11300 <br /> LW36 450 7.8 7.0 10100 <br /> LW4B 500 7.9 7.0 9100 <br /> LW5B 500 7.9 7.0 9100 <br /> LW66 600 7.8 6.9 7400 <br /> LW7B 700 8.0 6.7 6200 <br /> LW86 650 7.1 6.2 6200 <br />Micro-strain <br />Midterm Review (8/2002) III-12 <br />