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• <br />EXHIBIT 20 <br />Revised May, 1997 <br />PERMIT REVISIONS DURING THIRD FIVE-YEAR PERMIT TERM <br />The following is a summary of revisions which have been submitted, reviewed, <br />approved or pending since the permit renewal dated November 5, 1992. <br />Minor Revisions <br />1. Minor Revision No. 21 -Topsoil Removal for Dragline Relocation <br />Submitted: October 15, 1992 <br />Action: Approved Nuaember 4, 1992 <br />2. Minor Revision No. 22 -Blasting Reports <br />Submitted: November 2, 1992 <br />Action: Approved January 27, 1993 <br />3. Minor Revision No. 23 -Upper Goodspring Creek Monitoring <br />Submitted: December 9, 1992 <br />Action: Approved December 24, 1992 <br />• <br />• <br />4. Minor Revision No. 24 -Coal Stockpile Expansion <br />Submitted: January 11, 1993 <br />Action: Approved January 26, 1993 <br />5. Minor Revision No. 25 -Swell Factor Analysis <br />Submitted: August 11, 1993 <br />Action: Approved August 17, 1993 <br />6. Minor Revision No. 26 -Operator Name Change -Internal Reorganization <br />Submitted: January 27, 1994 <br />Action: Approved February 18, 1994 <br />7. Minor Revision No. 27 - 1994 Development Drilling <br />Submitted: March 17, 1994 <br />Action: Approved April 10, 1994 <br />8. Minor Revision No. 28 -Sediment Control Measures <br />Submitted: December 27, 1994 <br />Approved: January 4, 1995 <br />9. Minor Revision No. 29 -Updated Ownership & Control <br />Submitted: February 22, 1995 ' <br />Approved: March 10, 1995 <br />10. Minor Revision No. 30 -West Pit Pond Slide <br />Submitted: June 26, 1995 <br />Withdrawn <br />11. Minor Revision No. 31 -Exploration Drilling Within the Permit Area <br />Submitted: October 18, 1995 <br />Approved: November 6, 1995 <br />1l~ `~~~ <br />