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These estimates are valid for the additional areas included in the revised permit <br />boundaries due to their similarity, limited size, and proximity to the original <br />permit area. <br />The Thompson ranch house and associated buildings are located over the main <br />Southfield mine entries that were designed to provide full support. This area has <br />not been previously undermined by historic mining activities in the vicinity. Since <br />the main entries were developed using a full support design, minimal or no <br />subsidence occurred. <br />The ranch buildings are situated upon two (2), ten (10) acre surface tracts <br />conveyed to the Thompson's by Robert Jackson and Edward Cribbs on June 16, <br />1965. The associated transfer of surface ownership included a specific reservation <br />giving the grantor (Cribbs-Jackson) the right to mine the coal and contained an <br />explicit waiver of all rights to surface support and released the grantors from all <br />liability for damage resulting from subsidence. A copy of the deeds as recorded is <br />included in Exhibit 23, Subsidence Information. Dorchester mined coal from the <br />Cribbs-Jackson property, including the area underlying the Thompson surface, <br />pursuant to a lease executed in May, 1978, between Dorchester and Cribbs- <br />Jackson. The reserved mining rights and subsidence waiver in the recorded deeds <br />constitute valid properly rights which were conveyed to Dorchester by the Cribbs- <br />Jackson lease and were subsequently transferred to EFCI. While Dorchester's and <br />subsequently, EFCI's liability for subsidence damage is expressly limited, the <br />CDMG requires monitoring of all potentially affected structures within projected <br />subsidence limits, <br />Damage to county roads within the mine area was expected to be characterized, <br />in extreme cases, by surface cracking or buckling and vertical displacements as a <br />result of subsidence troughs. The locations of these features were expected to <br />occur wherever roads intersect the center portions of the mine panels, and rib <br />side and end lines, with buckling occurring at centers and cracking occurring near <br />rib side and end lines. In practice, mining-related subsidence had little or no <br />discernible impact on area roads. <br />TR-36 2.05.6-57 Revised -October 2003 <br />