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Exhibit D - MINING PLAN <br /> The Edmundson Clay Mine is located in The Dakota Sandstone and Purgatoire Formation of the lower <br /> Cretaceous, with buff sandstone and buff conglomeratic sandstone and dark-gray shale. <br /> EXISTING MINING PLAN <br /> The operation will be extraction only with no on-site processing. It will be a comparatively low volume <br /> operation with clay extraction projected to be in the 5,000-10,000 tons per year range. <br /> As provided in Rule 1.6—Cessation and Termination,Section 1.62, the applicant hereby states that the <br /> affected lands could be used less than 180 days per year. This is not to be construed by the Board as a <br /> cessation of operation. <br /> The clay deposit ranges from 4' to 12' in thickness and is overlain by sandstone caprock ranging in depth <br /> from 3'to 6'. The caprock overburden will either be ripped or shot and then dozed to the pit <br /> perimeters. Topsoil is virtually non-existent on the caprock except for occasional pockets which will be <br /> segregated and stockpiled for replacement in reclamation. The applicant will commit to grading topsoil <br /> stockpiles no steeper then 3H:1V slopes and seeding with a perennial cover crop to preserve the <br /> integrity of the topsoil. <br /> The proven clay lies roughly in 2 parallel fingers separated by a small swale and running from northwest <br /> to southeast. Extraction will begin on the eastern finger and proceed from northwest to southeast.The <br /> caprock will be removed from the surface with a dozer. The clay deposit will be extracted by front-end <br /> loader and loaded in haul trucks for transport to the applicant's processing plant in Pueblo. <br /> No haul roads will be constructed. Access to the mine is over existing ranch roads. <br /> Projected life of the proven deposit is estimated at 15 years. <br /> PROPOSED CHANGES <br /> The proven deposit of clay has been exhausted and no additional mining or extraction of material is <br /> planned to take place at this site. The site is under final reclamation. <br /> 5 <br /> SUMMIT BRICK AND TILE COMPANY- EDMUNDSON CLAY MINE NOVEMBER 2023 <br />