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• <br />References <br />Mark C, and F. Chase 1997. Analysis of Retreat Mining Pillar Stability, NIOSH IC 9446. <br />Brinton J. 2009. Personal communications with BRL geologic staff. <br />Hunt, G. 2004. E-mail communications. <br />Maleki, H. 2002. The Application of Geotechnical Monitoring to Stability Evaluation and Mine <br />Designs, Proc. of SME meeting, Arizona. <br />Stewart, C, 2003 and 2009, Personal communications with chief engineer formerly with BRL. <br />MTI 2003, Design of Geotechnical Data Collection Plan, Internal report by Maleki <br />Technologies, Inc. to Bowie Resources, LLC. <br />MTI 2004, Overburden Stability Evaluation at Terror Creek Crossing, Internal report by Maleki <br />Technologies, Inc. to Bowie Resources, LLC. <br />Disclaimer • <br />MTI has completed this geotechnical work using sound engineering judgment and experience in similar mines based <br />on geologic evaluations and mine layouts/support systems selected by BRL. However, most rock mechanics <br />problems are data limited, and the analytical techniques used by MTI have many limitations that cannot take into <br />account all unknown variability in geologic conditions. Assessments of the stability of mine openings and the face <br />presented in this report, are opinions based on comparative analyses of limited data, and do not present predictions <br />of mining conditions. Localized instabilities hazardous to mine personnel can occur at random in any underground <br />opening and cannot be predicted in advance of mining. Identification and control of local instabilities are the <br />responsibilities of the BRL. MTI makes no warranty or guarantee as to the safe outcome of the use by BRL of any <br />data, recommendation, suggestion, discussion or consultation provided by MTI. <br />Other supporting data and information relied upon during the course of this investigation and used in preparation of <br />this report was provided by BRL and other subcontractors including geologic data, rock mechanic tests, stress <br />measurements published reports and literature and personal communications with BRL staff. MTI makes no <br />representation or warranty of the accuracy of the data used in preparation of this report. <br />E <br />Maleki Technologies, Inc. Page 6