PERMFILE134368

• Permit No: C1981022
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Water Communication Potential from Overlying Workings /Abel, 1992
• Section_Exhibit Name: Exhibit 2.04-E4 Part 6
• Media Type: D
• Archive: No

Sanborn Creek Project Paqe 2 August 21, 1992

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TABLE OF CONTENTS
EXECUTIVE SUMMARY 3
INTRODUCTION . 4
SEAM INTERACTION ANALYSIS METHODS 4
CHIMNEY COLLAPSE PREDICTION. 6
TROUGH SUBSIDENCE PREDICTION 13
"C" AND "D" SEAM INTERACTION ANALYSIS 16
"C" AND "E" SEAM INTERACTION ANALYSIS 17
OTHER POTENTIAL WATER PROBLEMS. 17
CONCLUSIONS 18
REFERENCES CITED. 19
APPENDIX - TROUGH SUBSIDENCE CALCULATION SHEETS 20