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TABLE OF CONTENTS <br /> 4.23.2(1) Undisturbed Areas of Coal Shall be Left in Unmined Sections...........................................21 <br /> 4.23.2(2) Abandoned or Active Underground Mine Workings...........................................................21 <br /> 4.23.2(3) Contemporaneous Surface and Auger(Highwall)Mining...................................................21 <br /> 4.23.2(4) Prevention of Pollution of Surface and Ground Water and Fire Hazards............................22 <br /> 4.23.2(5) Holes Not Need to be Plugged.............................................................................................22 <br /> 4.23.2(6) Division Shall Prohibit Auger(Highwall)Mining...............................................................22 <br /> 4.23.2(7) Backfill and Grading Requirements.....................................................................................22 <br /> 4.25 OPERATIONS ON PRIME FARMLANDS .......................................................................22 <br /> 4.26 MOUNTAINTOP REMOVAL............................................................................................22 <br /> 4.27 OPERATIONS ON STEEP SLOPES..................................................................................22 <br /> 4.28 FACILITIES NOT LOCATED AT THE MINESITE.........................................................23 <br /> 4.29 IN SITU PROCESSING......................................................................................................23 <br /> 4.30 CESSATION OF OPERATIONS........................................................................................23 <br /> 4.30.1 Temporary............................................................................................................................23 <br /> 4.30.2 Permanent.............................................................................................................................23 <br /> iv Revision Date: 10/27/20 <br /> Revision No.: TR-143 <br />