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coal beds and the topography of Huntsman Ridge, the cover above <br /> the underground workings will remain more or less constant to the <br /> west of Huntsman Ridge. <br /> The Mine Plan Area encompasses those areas which <br /> will be needed for mining over the next 40 years . The Permit <br /> Area applied for in this application is the same as the mine plan <br /> area. Even though the permit area will not change over the life <br /> of the mine, it is anticipated that the underground sequence of <br /> operations will require updating at 5 year intervals for the life <br /> of the mine. Signs and markers delineating the extent of the <br /> mine plan/permit area are posted to comply with the provisions of <br /> Rule 4 .02. <br /> b . Anticipated sequence of mining and reclamation <br /> Mine production, coal preparation, transportation <br /> and supporting services are organized and scheduled to achieve <br /> the most efficient production consistent with safety, market <br /> demand, and protection of the environment . All coal will be <br /> produced by underground mining methods . Conceptually each of the <br /> five mines are very similar in layout, organization and operation. <br /> Because of the physiography and geology of Coal Basin the similarity <br /> of the mines is not always immediately apparent . As each mine <br /> progresses further from the outcrop the increased cover above the <br /> active workings significantly decreases the viability of room and <br /> pillar mining. Although the entries and headings are presently <br /> t <br /> being mined by room and pillar methods longwall mining will be <br /> the dominate mining method during the remainder of the five year <br /> term of this permit . <br />