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Subsidence Evaluation For <br />Exhibit 608 South d Divide Mining Arna Page 36 <br />• <br />Peng, Syd S and D.Y. Geng. 1982. "Methods of Predicting the Subsidence Factors, Angle of <br />Draw and Angle of Critical Deformation:' Proceedings of Stale-of--the Art of Ground <br />Control in Longwall Mining and Mining Subsidence Conference. Litt-eton, Colorado. <br />Peng, Syd S and S.M. Hsuing. 1986. "Guidelines for Subsidence Abatement over Abandoned <br />Mined Land:' Annual Report (July 1, 1985 -June 3Q 1986). Submitted to West <br />Virginia Department of Energy. <br />• <br />• <br />c-~ aorzxaa~a~ssi-03x~m~r,~msoaaxasmo <br />831-032.690 <br />WirgMWaterEngineers, Inc. <br />