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MINING PLAN EXHIBIT D <br /> 1.General Mining Plan <br /> All mining has been completed in the western portion of this pit. There remains 5.64 acres <br /> unmined in the eastern side of the pit. The eastern most 1.84 acres of that 5.64 acres will not <br /> be mined. It is currently used as the topsoil stockpile area and will be graded to its pre-permit <br /> level when the topsoil stockpile is removed. These areas are shown on Exhibit C. <br /> Mining of the remaining 3.80 acres will begin in the north end and proceed east to the west <br /> boundary of the topsoil stockpile area, then south till all minable gravel in that 3.80 acres is <br /> mined. The 4—8 inches of topsoil will be stripped and moved to the stockpile area or placed <br /> directly on the 3H:1V slopes created along the north and east boundaries of the excavated area. <br /> Approximately 1 foot of overburden will be excavated along with approximately 12 feet of <br /> gravel and hauled to the directly to the crusher or stockpiled on the pit floor with a frontend <br /> loader. Other equipment used on site may include dozers, excavators and gravel trucks. The <br /> overburden will be incorporated in finished gravel products. There is expected to be about <br /> 3,000 cubic yards of topsoil and 75,000 to 80,000 cubic yards of gravel. Product will be crushed <br /> and stored in pit areas previously mined. All final slopes around the outer perimeter of the <br /> mined area will be mined 3H:1V to reduce the amount of reclamation required after mining. <br /> Highway trucks will haul sellable material to market from the processing site. Truck traffic will <br /> use Sundown Road. <br /> 2.Mining Timetable <br /> With 75,000 cubic yards of gravel is approximately 110,000 tons of product. Gray Rock <br /> anticipates 15,000 to 20.000 tons in sales at this time. This makes the remaining life of this <br /> mine 5 to 7 years. <br /> 3.Mine Facilities and Operation <br /> No change from the previously approved mining plan. <br /> Moonscape Pit, November 2023 D 1 <br />