_GENERAL DOCUMENTS - C1981017 (219)

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- 9 - XX. Bondings - Rule 2.05.4 (2 ) (d ) Total bond calculated to reclaim the Coal Basin P1ine complex is $2 ,609 ,326. This is calculated through Technical Revision No. 10, Permit Revision No. 2 , and Hinor Revision No. 11 . Mid-Continent Resources has submitted a Deed of Trust with an appraised value of $3,340,000 as collateral bond. Mid-Continent Resources has committed $3,000,000 of this property value to the bond for the Coal Basin Mines. This allows a window of bond for new revisions to the permit without revising the bond documents. The proposed operation is in compliance with the requirements of this section. XXI. Sealing Drill Holes and Underground Openings - Rules 2.05.4 (2 ) (g) and 4.07 This section remains valid for the existing permit. XXII. Subsidence - Rules 2.05.6(6) and 4.20 On February 3, 1986 the Division approved a technical revision requesting deletion of the semi-annual subsidence monitoring for the Coal Basin Mines. The operator agreed to several conditions placed upon the approval of this technical revision: 1 . If any unanticipated surface disturbance (cracking, cratering or landsliding) manifests itself within the area potentially affected by subsidence (angle of draw equals 20.5° ) , the operator will be required to immediately reinstitute the subsidence monitoring program. 2. All existing monuments will be left in place and maintained. 3. All existing monuments will be resurveyed at the conclusion of the current five year permit term, to determine whether additional subsidence manifests itself. 4. A subsidence monitoring program will be required above any double-pass long wall operations, in order to determine the ultimate subsidence factor above that relatively untested extraction technique. These conditions have all either been complied with or committed to by the operator in the permit renewal application.