Laserfiche WebLink
<br />6.0 MA7QMUM ECONOMIC RECOVERY <br />' The Deserado Mine is planned for a maximum economic recovery within the constraints of safety and <br />existing technology. I.ongwall mining has been planned to the greatest extent possible since this method <br />' allows virtually 100 percent extraction of the panels. Room-and-pillaz mining is planned for those <br />azeas where longwall mining is not practical. The pillars in these panels will also be partially extracted <br />' as long as it could safely be done. An overall extraction rate of Crt percent is expected from the <br />room-and-pillaz panels. <br />' It has been stated that coal less than 4 feet in thickness or under less than 100 feet of overburden is <br /> considered unmineable for the reason of safety and equipment constraints. <br /> 7 <br />Pl <br />d <br /> ates <br />an <br />8 show a number of other areas left unmined which would otherwise be mineable under <br /> the thickness and overburden criteria. These areas aze not mined for one or more of the following <br />' reasons. <br />' 1. No mining in azeas 100-feet from the 100-yeaz flood plane. This boundary is shown in <br />Section 11 of the mine plans. <br />2. No mining where the reject percentage is expected to exceed 50 percent unless it is necessary <br />for mine development. Such areas aze marked in both the D and B Seam mine plans. <br />' 3. No multiple seam mining where the interburden between D and B Seams is less than 10 feet. <br />Such azeas aze shown in Section 33 of the D Seam mine plan and Sections 2, 4 and 11 of the <br />' B Seam mine plan. Mining in such azeas is planned only in the D Seam in Section 33, and <br />only in the B Seam in Sections 2, 4 and 11. <br />4. No room-and-pillar mining in D Seam if longwall mining is planned underneath in the B <br />Seam. Only longwall mining is planned in the D Seam if there is longwall mining planned <br />' underneath in the B Seam. If longwall in the D Seam is not practical, or economically feasible, <br />or it jeopardized relatively better reserves in the B Seam, the azea in question is lefr unmined. <br />5. No B Seam mining in the lease COC 5151 is planned since this coal cannot be economically <br />mined unles the area to the west of this lease is further explored, proved to contain recoverable <br />' coal and leased from the federal government. <br />37 <br /> <br />