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EXHIBIT C - MINING PLAN <br />1. General Plan <br />Colorado Stone Quarries (CSQ) acquired the assets of Sierra Minerals on April 26, 2004 and continued <br />the same operations. The Mining and Reclamation Permit as well as all other permits and a long term <br />lease from OMYA. Inc. was transferred to Colorado Stone Quarries. The Division of Minerals and <br />Geology (now DRMS) approved the transfer from Sierra to Colorado Stone on May 28, 2004. <br />The underground room and pillar plan has been developed to provide a design to provide for safe and <br />long -term operation of the underground quarry. The marble blocks are mined with large diamond wire <br />saws with water applied for cooling and dust control. As of 2013, most activity is taking place in the <br />Portal #5 area, and the mining first occurs at the upper level of the good marble and it is then mined <br />below, leaving pillars for support at required distances. The blocks are removed from the mine and <br />hauled to the load out area in the Town of Marble. <br />The quarry is an underground operation and will remove material from areas already developed in the <br />marble seam underground. There are existing waste marble piles that remain from prior operators as <br />well as Colorado Stone Quarries in the past five years. These areas are shown on Map C -2. <br />CYMC's activities involved the construction of the private access road, extension of existing waste <br />piles, construction of access roads on the existing waste piles, and construction of storm water control <br />features. <br />Productions rates anticipated by Colorado Stone Quarries should reach 3200 tons of marble annually, <br />with about the same amount of waste blocks, and 100 tons a year of fines. The fines will be small, less <br />than 50 mesh, and will be high in moisture content (higher than 50% moisture) when placed upon mud <br />drying dumps. The materials will be blended in the dumps to prevent the fines from causing sediment <br />run off and wind dispersal. The sediment system redesigned for this permitting action will ensure that <br />Yule Quarry January 2014 17 <br />