2017-12-20_REVISION - M1977219 - Laserfiche WebLink

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Exhibit D Mining Plan (cont) during exploration activities throughout the property, additional clay and sandstone reserves will be discovered that were not included in the current mining plan. If this occurs, either a new Area will be added or an existing area will be expanded to cover the new area . If at any time it is determined that the disturbed area will exceed the maximum allowed by the bond, a Technical Revision to increase the amount of area will be submit- ted. The maps and the Mining Timetable list show a series of 7 mining areas that are used to designate where mining will be done . Their sequencing does not denote the direction of mining and there are 2 small Areas labeled El & E2 that may also be mined in the future if they contain clay reserves . At this time mining is taking place in Area A. The Mining Plan Map shows that mining has ended in Areas A, B, & C and continuing in Area D. This was done to show that reclamation is running concurrent with mining, and not to indicate that mining will move in that direc- tion. As mining approaches the end in a given Area the Division will be notified in the Annual Report as to where mining will be done next . The sloping plan as described in the last amendment will not be changed at this time . There is adequate material generated by mining to backfill against the clay and sandstone working face . It is generated from precessing, mining the rock and clay and excess overburden that can be used as backfill material to create the slopes into the bottom of the mine at a rate of 3h to lv At no time would there be more then 1000 linear feet of sloping needed. The cross section on Map Exhibit F - Reclamation Plan shows how this sloping plan would look. Any unconsolidated materials on the top of the sandstone and any exposed clay bed below the solid sandstone will be reclaimed to 3h to lv slopes . The Typical Cross Section shown on the Reclamation Plan Map depicts the final surface configuration. For the most part, the topsoil and overburden above the solid sandstone consists of unconsolidated material ranging in thick- ness from a few inches to several feet . According to the Soils Report this unconsolidated material is a combination of top- soil/growth medium (0 to 7 inches averaging 2 . 7 inches) , and rocky dirt (overburden up to 8 feet thick) . The topsoil/growth medium will be stripped off the overburden and stockpiled on the perimeter of the mined area or placed on areas where mining has ended. The overburden found under the topsoil will be used to backfill previously mined areas or saved for use as root zone . The waste from the clay bed and unusable crusher fines left from sandstone processing, will be used for backfill or to build the 3h to lv slopes . The Area labeling in the revised Mining and Reclamation Timetables are there to label the mining areas within the mine and not necessarily to show the direction or timing of mining. In general, we propose that mining will continue in Area A and once that is done will move onto the northern end of Area S or the east side of Area B . 5 (revised 12/18/17)