Laserfiche WebLink
MINING PLAN EXHIBIT D (Continued) <br />• <br />20 foot barrier pillaz will be maintained below the "upper level" (see Map Exhibit D-lA) <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 azeas included. Within one year after <br />any post-law portal is abandoned, reclamation of that area will begin. Therefore no more <br />than 2 portals will be active at one time. Tbese additional portals will be identified in the <br />annual reports. The nilning methods in these new portals will not be changed. <br />Surface Mining (Map Exhibit D-1, D-1B and 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 al] 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 full <br />• - _ - - <br />(Revised May 22,2000) <br />9 <br />