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TABLE OF CONTENTS <br />• 1.0 <br />2.0 <br />3.0 <br />4.0 <br />5.0 <br />Page <br />SUMMARY OF MAJOR FINDINGS ................................................................................1 <br />FIELD RECOGNITION OF SUBSIDENCE AND NON-SUBSIDENCE FEATURES IN <br />THE WEST ELK MINE AREA ....................................................................................... ..5 <br />2.1 Subsidence Cracks and Compression Features ............................................................... ..5 <br />2.2 Construction Cracks .......................................................................................................... ..6 <br />2.3 Desiccation Cracks ............................................................................................................ ..7 <br />2.4 Gravity-Induced Cracks ..................................................................................................... ..8 <br />SUBSIDENCE PREDICTION ........................................................................................ 10 <br />3.1 E1 Panel Subsidence Monitoring Grid ............................................................................... 11 <br />3.2 Monument Dam/Minnesota Reservoir Monitoring Data .................................................... 12 <br />OVERVIEW OF FALL 2009 FIELD STUDIES ............................................................... 15 <br />TRAVERSES AND OBSERVATIONS IN THE BOX CANYON, APACHE ROCKS, AND <br />SOD MINING AREAS ................................................................................................... 17 <br />5.1 Traverse A-A ...................................................................................................................... 17 <br /> 5.1.1 Location 1 ........................................................................................................ 18 <br /> 5.1.2 Photographic Observation Point 8 and 8A ...................................................... 20 <br />5.2 Traverse B-B...................................................................................................................... 23 <br />5.3 Traverse C-C' .................................................................................................................... 24 <br />5.4 Traverse D-D ..................................................................................................................... 24 <br /> 5.4.1 Location 2 ........................................................................................................ 25 <br /> 5.4.2 Location 3 ........................................................................................................ 26 <br />5.5 Traverse E-E ...................................................................................................................... 27 <br /> 5.5.1 Location 4 ........................................................................................................ 28 <br /> 5.5.2 Location 5 ........................................................................................................ 32 <br /> 5.5.3 Photographic Observation Point 1 ................................................................... 34 <br />5.6 Traverse F-F ...................................................................................................................... 35 <br /> 5.6.1 Location 6 ........................................................................................................ 37 <br /> 5.6.2 Photographic Observation Point 2 ................................................................... 37 <br />5.7 Traverse G-G..................................................................................................................... 38 <br />5.8 Traverse H-H ..................................................................................................................... 38 <br /> 5.8.1 Location 7 ........................................................................................................ 39 <br /> 5.8.2 Photographic Observation Point 3 ................................................................... 39 <br />5.9 Photographic Observation Point 4 ..................................................................................... 42 <br />5.10 Photographic Observation Point 5 ..................................................................................... 43 <br />5.11 Traverse 1-1 ........................................................................................................................ 44 <br /> 5.11.1 Location 8 ........................................................................................................ 45 <br /> 5.11.2 Location 9 ........................................................................................................ 48 <br />5.12 Traverse J-J ....................................................................................................................... 51 <br /> 5.12.1 Location 10 ...................................................................................................... 51 <br /> 5.12.2 Location 11 ...................................................................................................... 52 <br /> 5.12.3 Location 12 ...................................................................................................... 53 <br /> 5.12.4 Location 13 ...................................................................................................... 56 <br />5.13 Traverse K-K ...................................................................................................................... 57 <br /> 5.13.1 Photographic Observation Point 12 ................................................................. 58 <br /> 5.13.2 Location 14 ...................................................................................................... 59 <br /> 5.13.3 Location 15 ...................................................................................................... 59 <br /> 5.13.4 Location 16 ...................................................................................................... 60 <br />5.14 Traverse K1-K1 .................................................................................................................. 60 <br /> 5.14.1 Photographic Observation Point 13 ................................................................. 60 <br />5.15 Traverse K2-K2 .................................................................................................................. 62 <br />5.16 Traverse K3-K3' ................................................................................................................. 62 <br />5.17 Traverse L-L ...................................................................................................................... 62 <br />5.18 Traverse L1-L1 .................................................................................................................. 63 <br />5.19 Location 17 ........................................................................................................................ 63 <br />5.20 Photographic Observation Point 6 ..................................................................................... 64 <br />5.21 Photographic Observation Point 7 ..................................................................................... 64