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I.A.S Mining Plan A complete descriptionof the mining system is included previously in this section. <br />BME intends to extract coal from the D coal seam by utilizing both longwall and room and pillar, with <br />pillar extraction methods. The mine is being developed by driving a series of mains and submains with <br />continuous miners. These entries serve as the arteries for coal conveying and ventilation. The mains <br />and submains, which will remain open for the life of the mine, are supported by roof bolts. Additional <br />support may include timbers, steel arches, steel mats, steel mesh and shotcrete. <br />The room and pillar sections will be laid out with amultiple-entry development system. A series of <br />rooms and crosscuts will then be mined from the main entries on a spacing to be determined by the <br />prevailing geological conditions. Coal will be cut by continuous miners. <br />After a panel of rooms has been completed, and if conditions allow, the intervening pillars will be <br />extracted, retreating toward the mains. The extraction of most of the pillar coal on the retreat will result <br />in caving of the roof some 50 to 100 feet behind the active mining area. Upon completion of a room <br />and pillar section, the caved area will be sealed off and protected with adequate barrier pillars. <br />The mine layout and the mining systems planned far the Deserado Mine are designed to maximize the <br />recovery of coal in the safest and most environmentallyacceptable manner. <br />I.A.6 Subsidence <br />I.A.6.a Subsidence Area Survey. BME has or will be mining coal from Federal Leases C-023703, <br />D-047201, C-0126669, C-8424, C-8425, C-44693 and COC-51551. Map No. 1 shows the permit <br />boundary and surface facilities. Map 2 shows the mineral and surface ownership in and adjacent to <br />the permit boundary. The surface within the permit area lies within a semiarid region whose main use <br />is winter livestock grazing and wildlife habitat. <br />A detailed pre-construction survey of the property found that six building structures and a county road <br />existed within the permit boundary. These structures were located adjacent to the abandoned Staley <br />Gordon Mine. The structures were a mine tipple, barn, change house, power house, fan house and <br />scale. The change house and power house were demolished as part of the Ventilation Entry <br />construction. The otherfour structureswere demolished in 1986. Rio Blanco County Road 65 crosses <br />the permit area from SE to NW. During construction, numerous structures and facilities were built <br />within the permit area. These facilities are shown on Map 1. <br />Rio Blanco county Special Use Permit#81-1 <br />ExhibitB-Mining Plan <br />September2000 <br />7 <br />