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Maleki, H. and W. Koontz, 1999, Case Studies of Progressive Pillar Failure in Two <br />Mines using Wide Pillars, 19~' International Conference in Ground Control in Mining, <br />WV University, pp 278-285. <br />Carrol C. 2003. Fractures in the Mesa Verde Group at Somerset Coalfield, Delta and <br />Gunnison Counties, Co, Co Geological Survey, Denver, Co. <br />Tifft R. 1995. Unpublished report. <br />Kiger 2004, personal communications. <br />Cragg 2005, personal communications. <br />MTI 2004, Overburden Stability Evaluation at Terror Creek Crossing, Internal report <br />prepared by Maleki Technologies, Inc. for BRL. <br />Stewart C., 2006. A Determination of Angle of Draw D-Seam Longwall Mining, BRL <br />internal report. <br />Disclaimer <br />Other supporting data and information relied upon during the course of this investigation <br />and used in preparation of this report was provided by BRL including geologic data, rock <br />mechanic tests, available subsidence monitoring effects, published reports and literature <br />and personal communications with BRL staff and other contractors. MTI makes no <br />representation or warranty of the accuracy of the data used in preparation of this report. <br />Maleki Technologies, Inc. Page 39 <br />