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<br />MIATING PLAN <br /> <br />E}Q-IIBTT D (Continued) <br />20 foot barrier pillar will be maintained below the "upper level" (see Map Exhibit D-1A) <br />or the surface where applicable. <br />Two additional portals are planned and are shown on Map Exhibit D-1. Each of <br />the two subsequent portals will be put in as the then current portal is about to be <br />abandoned; the portals will be put into the footwall of the surface mining operation. Each <br />portal will disturb no more than 4 acres +/-, spoil areas included. Within one year after <br />any post-law portal is abandoned, reclamation of that azea will begin. Therefore no more <br />than 2 portals will be active at one time. These additional portals will be identified in the <br />annual reports. The mining methods in these new portals will no[ be changed. <br />Surface Mining (Map Exhibit D-1, D-1B end Figure 1) <br />Clays mined using open mining methods will be mined in two stages. The current <br />workings are located in Stage 1. Mining will continue both north and south from the <br />current workings to within approximately 50 feet of the permit boundary. Mining in <br />Stage 2 may begin prior to completion of all of the surface mining in Stage 1. <br />The current surface mining operation has been under a 110 Permit (see Map <br />Exhibit C for azea affected under the 110 Permit). The clay removed from this azea has <br />left a footwall approximately 75 feet in vertical height. Mining will continue downward <br />along this footwall, leaving no more than 150 feet of footwall exposed. Any overburden <br />(see Figure 1) or topsoil encountered during this period will be stockpiled to the east of <br />the current workings. The clay will be stockpiled on the mining floor and removed by <br />truck as needed. A ramp will be constructed to the pit floor to provide equipment access <br />and to be used by the trucks for removing the clay. <br />After full depth is reached at the current mining location, the topsoil from the next <br />area to be mined will continue to be stockpiled along the east edge of the azea shown as <br />major disturbance on Exhibit D-1. The overburden from where the topsoil was removed <br />will then be used to partially backfill the azea where the fixll <br />(Revised May 22, 2000) <br />9 <br />