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Table of Contents <br />Page <br />EXECUTNE SUMMARY ................................................. <br />l .0 INTR ODU CT] ON ........................................................ <br />2.0 SITE CHARACTERIZATIONt .................................... <br />2.1 Site Geology and Seam Settings ........:...................... <br />2.2 Drilling Program and Site Observations ................... <br />2.3 Physical Properly Test Resu]ts .................................. <br />3.0 HIGHWALL MINING CONSIDERATIONS ............. <br />3.1 System Overview ...................................................... <br />3.2 Mining Parameters .................................................... <br />3.3 Roof Stabi]it)+ ............................................................ <br />4.0 EMPIRICAL PII.LAR DESIGN .................................. <br />5.0 NUMERICAL 1`9ODELING ANALYSIS ................... <br />5.1 Design Procedure/Development of Modeling Cases <br />5.2 LAMODEL Analysis ................................................ <br />5.3 UDEC Analysis ......................................................... <br />6.0 OPERATIONAL CONSIDERATIONS ...................... <br />REFERENCES .................................................................... <br />Tables <br />]. Summary of ph)+sica] characteristics of the tea+o study areas .......................................3 <br />2. Summary of physical propert)+ test results for cores from the Yoast Area .................5 <br />3. Summary of ph)+sical property test results from the Peabody database ......................5 <br />4. Superior Highv~+a]] Miner parameters ..........................................................................7 <br />5. Effect of seam dip on minability, Seneca II\\' Area .......................... <br />.........................8 <br />6. Effect of seam dip on minability. Yoast Area .............................................................9 <br />7. Calculated RI`QR. and Q ratings ................................................................................11 <br />8. Geometric parameters for numerical models ............................................................IS <br />9. Design and modeling parameters ..............................................................................17 <br />] 0. Summary of input parameters used in UDEC analysis of the Seneca ]IVV and <br />Yoast Areas ................................................................................................................19 <br />Fisures <br />1. Seneca 17\\' and Yoast Areas. hightval] mining blocks and joint orientations. <br />2. Seneca IT\\' Area. Wadee Seam cover. <br />3. Seneca IT\\' Area. \\tadee Seam bottom elevation. <br />4. Seneca Il\\' Area. \Yadge Seam thickness <br />5. Seneca II\\t Area. \\tad~e/Base Creek interburden thickness. <br />6. Seneca II\\' Area. Saee Creek Seam cover. <br />"1. Seneca II\\% Area. Saee Creek Seam bottom elevation. <br />8. Seneca II\\' Area. Sage Creek Seam thickness. <br />• <br />• <br />• <br />