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TABLE OF CONTENTS <br />4.19 PROTECTION OF UNDERGROUND MINING................................................................................................4-74 <br />4.20 SUBSIDENCE CONTROL............................................................................................................................4-74 <br />4.21 COAL EXPLORATION................................................................................................................................4-74 <br />4.21.1 Scope..............................................................................................................................................4-74 <br />4.21.2 General Responsibility of Persons Conducting Coal Exploration.................................................4-75 <br />4.21.3 Required Documents......................................................................................................................4-75 <br />4.21.4 Performance Standards..................................................................................................................4-75 <br />4.21.5 Requirements for a Permit.............................................................................................................4-76 <br />4.22 CONCURRENT SURFACE AND UNDERGROUND MINING............................................................................4-76 <br />4.23 AUGER AND HIGHWALL MINING.............................................................................................................4-77 <br />4.23.1 Scope..............................................................................................................................................4-77 <br />4.23.3 Performance Standards..................................................................................................................4-77 <br />4.23.4 Maximize Recoverability of Mineral Reserves...............................................................................4-77 <br />4.23.5 Undisturbed Areas of Coal Shall Be Left in Unmined Sections.....................................................4-78 <br />4.23.6 Abandoned or Active Underground Mine Workings......................................................................4-78 <br />4.23.7 Surface Mining Activities and Highwall Mining............................................................................ <br />4-78 <br />4.23.8 Prevent Pollution of Surface and Groundwater and to Reduce Fire Hazards...............................4-78 <br />4.23.9 Division shall prohibit Auger (Highwall Mining) Mining.............................................................. <br />4-78 <br />4.23.10 Backfill and Grading Requirements..............................................................................................4-79 <br />4.23.11 Highwall Shall be Eliminated........................................................................................................4-79 <br />4.24 OPERATIONS IN ALLUVIAL VALLEY FLOORS...........................................................................................4-79 <br />4.25 OPERATIONS ON PRIME FARMLANDS.......................................................................................................4-79 <br />4.26 MOUNTAINTOP REMOVAL.......................................................................................................................4-79 <br />4.27 OPERATIONS ON STEEP SLOPES...............................................................................................................4-79 <br />4.28 COAL PROCESSING PLANTS AND SUPPORT FACILITIES NOT LOCATED AT OR NEAR THE MINE SITE OR NOT <br />WITHIN THE PERMIT AREA FOR THE MINE...........................................................................................................4-79 <br />4.29 IN-SITU PROCESSING...............................................................................................................................4-79 <br />4.30 CESSATION OF OPERATIONS....................................................................................................................4-79 <br />4.30.1 Temporary......................................................................................................................................4-79 <br />4.30.2 Permanent......................................................................................................................................4-80 <br />RULE 6 BLASTERS TRAINING AND CERTIFICATION.................................................................................6-1 <br />Table of Contents iv Date Revised: 4/9/18 <br />Revision No: MR -184 <br />