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• <br /> LIST OF FIGURES <br /> IV-1 Typical Layout of Three-Entry System IV-8 <br /> IV-2 Typical Four-Entry System IV-9 <br /> IV-3 Typical Layout of Five-Entry System IV-10 <br /> IV-4 Typical Rooming Section IV-11 <br /> IV-5 Typical Pillar Panel IV-12 <br /> IV-6 Typical Partial Pillar Panel Layout IV-13 <br /> IV-7 Flow Schematic - No. 5 Mine Settling Ponds IV-38 <br /> IV-8 Plan View - No. 5 Mine Settling Ponds IV-39 <br /> IV-9 Cross-Section A-A' IV-40 <br /> IV-10 Cross-Section B-B' IV-41 <br /> IV-l0a Retaining and Wing Walls IV-44d <br />• IV-lOb Cross-Sections A-A', B-8' and C-C' IV-73a <br /> IV-11 Typical Seal Plan IV-75 <br /> IV-12 Subsidence Above Room and Pillar Workings IV-155 <br /> IV-13 Predicted Subsidence Profile - 3rd East IV-173 <br /> IV-14 Predicted Subsidence Profile - 2nd West IV-174 <br /> IV-15 Predicted Subsidence Profile - No. 9 Mine Alluvial Valley IV-175 <br /> IV-16 Caving and Subsidence IV-181 <br /> IV-17 Relationship Between Depths and Room Center for Different <br /> Thickness of Seam for 20-f t. Rooms. IV-189 <br /> iV-18 Pillar Design Model IV-191 <br /> IV-19 Typical Subsidence Monument IU-199 <br />• <br />(REV. 12/13/83) <br />