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1 <br />.' <br />_1 <br />L~ <br />_' <br />TABLE OF CONTENTS <br />EXECUTIVE SUMMARY 1 <br />INTRODUCTION . 4 <br />MINING ENVIRONMENT. 5 <br />CHIMNEY SUBSIDENCE POTENTIAL. 11 <br />LONGWALL PANEL TROUGH SUBSIDENCE PREDICTION 15 <br />LONGWALL PANEL GROUP SUBSIDENCE PREDICTION. 24 <br />PREDICTED LANDSLIDE SUBSIDENCE EFFECTS. 41 <br />CONCLUSIONS 95 <br />REFERENCES . 4 6 <br />APPENDIX A. INDIVIDUAL LONGWALL GROUP MAPS 48 <br />APPENDIX B, GRAPHS USED TO PREDICT SUBSIDENCE EFFECTS. 49 <br />ii <br />