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EXHIBIT D — MINING PLAN <br />BROWNSTONE QUARRY AMENDMENT — 2015 <br />The mining plan is executed in sequential stages to minimize the amount of disturbed land at any one <br />given time. This 4.4 acre area has a high quality Brownstone formation, often referred to as the <br />Plainview Formation on geologic maps, which averages 15 feet thick (confidential). The Brownstone <br />formation features an average 30 degree dip from horizontal to the east with the strike running in a <br />north/south orientation. The quarry walls will be roughly vertical to maximize the efficient extraction of <br />the cubical and rectangular shapes of the stone with an excavator. The stratum of material immediately <br />below the Brownstone is shale which will represent the quarry floor that follows the 30 to 34 degree dip <br />of the sandstone formation. The low volume nature of this operation, maximum of 4 to 5 thousand tons <br />sold per year, lends itself to small areas, of about 75' x 75', being excavated sequentially from north to <br />south. Topsoil will be stripped where present on the west side, stockpiled and planted with native seed <br />to prevent runoff. Topsoil on the central to east side of the amendment area will be pushed up and <br />stockpiled on the extreme east side and seeded for runoff protection. A strata of overburden, 1' to 55' <br />thick from west to east, is moved to the vacant adjacent area which exposes the Brownstone formation <br />in about 75' x 75' stages, to minimize affected areas at any one time. The total depth of the excavation, <br />including overburden and Brownstone, at the east border of the amendment area is expected to <br />approach 70'. The total depth of the excavation on the west border of the amendment area is expected <br />to approach 15', which is the depth of the Brownstone formation. Excess overburden is stockpiled in an <br />area approximately 500 feet to the north on the existing permitted area. No blasting is necessary as the <br />formation has existing horizontal and vertical seams. An excavator is used to extract and separate the <br />Brownstone, which is the primary commodity, into saw blocks, boulders, veneer and rubble. No <br />secondary commodities are sold in the operation. Front end loaders with forks are then used to move <br />the separated material to the appropriate place in the quarry layout for stockpiling and/or fabrication. <br />As the Brownstone in a given area is excavated, the overburden and rubble are placed back in the <br />adjacent vacant excavation to minimize double handling and as a first step in the reclamation process. <br />The excavation is generally moving from north to south along the strike in the existing permitted area <br />and will continue in the same manner in the proposed 4.4 acre amendment. Considering the current <br />market demand for Brownstone products and supply available in this proposed area, the overall <br />expectation is an increased 10 years of operation (confidential) given a consistent market demand going <br />forward. Due to the variability, for example size of blocks, color and texture, in Brownstone several <br />different areas in the existing permitted area are worked in co-ordination with the demand of a given <br />order or market trend. <br />The excavated area provides for a stormwater retention/detention system when a significant rain or <br />snow occurs. The collected stormwater is held until it can slowly leach through the ground below or it <br />will be pumped out to flow to the natural drainage basin if held longer than 72 hours. Stone Wholesale, <br />Inc. currently operates under Colorado Department of Public Health and Environment Stormwater <br />permit number COR34-1454. An administrative continuation has been issued for the permit as the <br />original expired on 09/30/2012. As a backup feature to this plan to prevent stormwater runoff, a 4' to 5'