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EXHIBIT C — Mining Plan <br />Mining operations will begin upon issuance of the Limited Impact (110(2)) permit from <br />the Colorado Division of Mining Reclamation and Safety, Storm Water Permit and <br />Fugitive Particulate Control Plan from the Colorado Department of Public Health and <br />Environment, Right of Way Grant from the BLM and Special Use Permit from Rio <br />Blanco County, with an expected start date of May 15, 2013. The planned mine life is 8 <br />years with completion of mining operations by October 31, 2020. <br />The material to be mined is oil shale, a fine grained sedimentary rock which contains <br />relatively large amounts of solid organic matter known as kerogen which requires <br />heating to elevated temperatures of 400 to 500 °C to liberate the kerogen as a gas or <br />liquid hydrocarbon. Overburden covering the mine zone is also oil shale but is much <br />lower in grade than the material to be mined. The purpose of the mining operation is to <br />supply oil shale to an offsite testing facility which conducts laboratory and pilot plant <br />scale research and development operations. There will be no processing of any type <br />conducted at the mine site. The small scale research operation to be supplied with <br />product from this mine requires annual production from the mine of only 8,000 to 9,000 <br />tons of oil shale rock so only one short term mining activity and one or two hauling <br />activities are expected to be conducted each year at the site. <br />The zone to be mined is a 40 foot vertical section located 20 feet above and 20 feet <br />below the mahogany marker. The Mahogany Marker is a visually identifiable 6 inch thick <br />layer of volcanic ash which is continuous throughout the Green River Oil Shale <br />Formation and is used as a mining marker to maintain the proper mining horizon. The <br />marker is exposed at the mine site and will be used to maintain the mining interval as <br />excavation progresses. Overburden covering the mine zone ranges from 10 to 60 feet in <br />depth. <br />The 5 acre mine site is approximately 275 feet in width and 800 feet in length. The <br />existing 16 foot wide unpaved access road enters the mine site at a point on the <br />southwest boundary approximately 400 feet northwest of the southeastern boundary <br />(map El). The southeastern 1.75 acres of the 5 acre site have been previously disturbed <br />and the southeastern 1 acre of the disturbed portion of the site will be prepared for <br />reclamation as one of the first activities of the mining operation. Broken rock on the <br />disturbed 1.75 acre site will be used to re- contour the southern .55 acre area to an <br />approximately 2H:1V slope before application of top soil and seeding. The portion of the <br />existing drainage within the previously disturbed area will be cleared of rock and two 48 <br />inch diameter by 35 foot in length culverts which are sized to handle flow volumes from <br />a 100 year storm event (see attached Drainage Report (100 Year Flood)) will be placed in the <br />drainage to create a temporary crossing for use during the mining operations and will be <br />1 <br />