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• _6_ • RIDER TO MINING PERMIT Permit Date June 4, 1984 Permit No. C-044-81 The following additional stipulations and conditions form an integral part of the foregoing permit: Stipulations attached to September 2, 1983 Findings Document. See Attachment A Stipulations attached to April 9, 1984 Findings Document. 25. EMPIRE ENERGY CORPORATION SHALL PERFORM A MINIMUM OF 7W0 ADDITIONAL COMPLETE CHEMICAL AND PHYSICAL ANALYSES ON ROOF, FLOOR, INTERBURDEN (ROCK SPLIT) AND COAL STRATA FROM REPRESENTATIVE LOCATIONS IN THE EAGLE N0. 9 MINE'S PERMIT AREA. RESULTS OF THESE ANALYSES SHALL BE SUBMITTED TO THE DIVISION WITHIN 60 DAYS OF THE ISSUANCE OF THIS PERMIT. 26. THE DIVISION DIRECTS EMPIRE ENERGY CORPORATION TO INSTALL AND MONITOR ONE SET OF SURVEY MONUMENTS OVER A SET OF DEVELOPMENT MAINS AT THE EAGLE ND. 9 MINE. THE MONUMENT SERIES OVER THE DEVELOPMENT MAINS AND MONUMENT SERIES H AND I SHALL BE INSTALLED NINETY (90) DAYS PRIOR TO MINING. THE SURVEY MONUMENTS SHALL BE PLACED OVER MINE AREAS WHICH WILL BE MINED WITHIN TWELVE (12) MONTHS OF THE TIME THAT MINING BEGINS. TWO MONTHLY MEASUREMENTS OF THE SURVEY MONUMENT ELEVATIONS SHALL BE MADE PRIOR TO UNDERMINING THE SETS OF SURVEY MONUMENTS. ONE MEASUREMENT OF THE SURVEY MONUMENT ELEVATIONS SHALL BE MADE IMMEDIATELY AFTER DRIVING THE DEVELOPMENT MAINS AND AFTER ROOM AND PILLAR ADVANCE. ALL SUBSEQUENT MONITORING OF SURVEY MONUMENT ELEVATIONS SHALL BE MADE QUARTERLY. ALL DATA FROM THIS SUBSIDENCE MONITORING SHALL BE SUBMITTED IN THE COMPANY'S SEMI-ANNUAL SUBSIDENCE REPORT. 27. THE DIVISION DIRECTS EMPIRE ENERGY CORPORATION TO VISUALLY MONITOR THE IRRIGATION DITCHES WITHIN THE ANGLE OF DRAW OF THE ACTIVE WORKINGS AND THE LAND SURFACE OVERLYING THE EAGLE N0. 9 MINE IN THE YAMPA RIVER BIG BOTTOM ALLUVIAL VALLEY FLOOR. THE COMPANY SHALL CONDUCT THIS MONITORING ON A WEEKLY BASIS DURING THE PERIOD BETWEEN SNOWMELT AND THE END OF THE GROWING SEASON OF EACH YEAR. MONITORING SHALL COMMENCE AS THE AREA IS UNDERMINED AND THE MONITORING RECORDS SHALL BE KEPT ON FILE AT THE MINE OFFICE. IF SUBSIDENCE DAMAGE IS OBSERVED, THE COMPANY SHALL IMMEDIATELY NOTIFY THE DIVISION AND SHALL INSTITUTE THEIR MITIGATIVE PLAN PROPOSED IN SECTION 4.6.4, PAGE IV-194a OF THE PERMIT APPLICATION. 28. NO EXTRACTION OF COAL SHALL OCCUR IN THE CONTESTED LANDS OF THE EAGLE N0. 9 MINE UNTIL THE MINED LAND RECLAMATION BOARD MAKES A FINAL DECISION CONCERNING EMPIRE ENERGY CORPORATION'S RIGHT OF ENTRY ONTO CONTESTED LANDS (AS DESCRIBED BELOW). EMPIRE ENERGY CORPORATION IS REQUIRED TO CONDUCT MAINTENANCE, RECLAMATION AND OTHER ANCILLARY OPERATIONS AT THE EAGLE N0. 9 MINE AS DESCRIBED IN PERMIT APPLICATION C-044-81.