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Progress Report 2 on Tatum House Subsidence issues Page 3 <br />July 13, 1995 <br />The Bureau of Mines is using some of their data collected from subsidence studies <br />conducted in the western United States to test the parameters used in the SDPS <br />software. They are using two or three mines that they have a complete set of data. <br />This information will be available later this summer. <br />As a further help I was directed to IC-9099 Surface Subsidence Ouer Longwall <br />Panels in the Western United States, a study at the Price River Coal Co No. 3 Mine <br />Utah. Although this study was originally designed to measure the effects of mining <br />two adjacent longwall panels, one panel was converted to a limited extraction room <br />and pillar before the study was completed. In fact mining stopped completely in <br />both panels before they were mined out because of a mine fire. As with the Allen <br />Mine significant subsidence was measured on the surface that is outside of the <br />influence of retreat or longwall mining. <br />