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<br /> <br />This lowering action would be consistent with the type of <br />cracks seen in the house, i.e., opening upward. <br />Another factor of importance is the changes in the structure <br />shown by comparing the historical picture with the present <br />photograph. The significant changes are: <br />1. Five rafter poles are missing in the front of the <br />house. Two poles are missing above the center of <br />the windows on the top floor. Three poles are <br />missing above the doorway and windows on the first <br />floor. <br />2. A water drain gutter mounted on the south wall <br />below the extended roof drain scuppers on the <br />second floor roof in the historical photograph is <br />missing on the present structure. This drain <br />trough was connected to a pipe at the back (west <br />side) of the second floor. <br />3. The two support poles present at the front edge of <br />the small porch at the front of the house are not <br />present in the historical photograph. <br />Conclusions <br />The Tatum building complex is well outside any potential <br />mining-related subsidence influence--even when <br />conservatively assuming that 75 percent of the coal had been <br />extracted and only 11 percent of the overburden is hardrock <br />(Figures 3 and 4). With only 34 percent actual coal <br />extraction, and 50 percent actual hard rock, it is highly <br />unlikely that any surface subsidence has occurred over the 1 <br />North entry. This conclusion is substantiated by two facts: <br />1) no railroad repair has taken place over the 1 North entry <br />within the zone of expected maximum deformation other than <br />normal maintenance; and 2) the subsidence monitoring over <br />the similarly-configured 3 North entry shows no measurable <br />subsidence. Furthermore, if the building complex was being <br />influenced by mine related subsidence, the garage, patio, <br />and concrete included in this area would be damaged. The <br />cracks in the house would be tension type, and, therefore, <br />wider at the base becoming narrow upwards. The water <br />draining into the 1 North entry is from the coal bearing <br />stratigraphic interval. The overburden fs too consolidated <br />to subside as a result of water withdrawal, and since <br />subsidence has not progressed upwards, there are no cracks <br />that could impact the shallow alluvial wells. <br />The most likely causes of the damage to the Tatum House are <br />modifications to the structure, poor maintenance, and/or <br />stress applied to the structure by soil movement associated <br />7 <br />