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<br />' TABLE OF CONTENTS <br />' Page <br /> 1.0 SUMMARY OF MAJOR RESULTS OF THE SUBSIDENCE STUDY ............... ...............1 <br />' <br /> 2.0 FIELD DIFFERENTIATION OF CRACKS IN MINING AREAS ......................... ...............3 <br />' 2.1 Subsidence Cracks ............................................................................................. <br />2 <br />2 .................3 <br /> . <br />Construction Cracks ........................................................................................... .................4 <br /> 2.3 Desiccation cracks .............................................................................................. .................4 <br />3.0 OVERVIEW OF FIELD SUBSIDENCE STUDIES DURING AUGUST 27-29, 2002.........6 <br />' 4.0 OBSERVATIONS AND EVALUATIONS ALONG TRAVERSES AND AT INDIVIDUAL <br />LOCATIONS ON AUGUST 27 THROUGH 29 ......................................................:...... ...7 <br />' 4.1 Subsidence Observations and Evaluations on August 27, 2002 ...................................... ...7 <br />4.1.1 Traverse A-A' .................................................................................................... ...7 <br />4.1.2 Traverse B-B' .................................................................................................... ...7 <br />' <br />4.1.3 Traverse C-C' .................................................................................................... ...8 <br />4.1.4 Traverse D-D' .................................................................................................... ...8 <br />' 4.1.5 Traverse E-E' .................................................................................................... ...9 <br />4.1.6 Traverse F-F' .................................................................................................... .10 <br />' 42 Subsidence observations and evaluations on August 28, 2002 ....................................... .11 <br />4.2.1 Traverse G-G' ................................................................................................... .11 <br />4.2.2 Traverse H-H' .................................................................................................... .15 <br />' <br />4.2.3 Traverse I-I' ....................................................................................................... .17 <br />4.2.4 Traverse J-J' ..................................................................................................... .17 <br />' 4.3 Subsidence Observations on August 29, 2002 ................................................................. .18 <br />4.3.1 Traverse K-K' .................................................................................................... .19 <br />' 4.3.2 Traverse L-L' ..................................................................................................... .20 <br />