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.~ <br />• <br />and exploration technology; and the market price for uranium are <br />primary factors which could cause variations in the resource develop- <br />ment schedule (timetable) discussed below. <br />As of July, 1977, mining was considered seventy-five percent <br />complete down to the eleventh level or down to an elevation of 5400 feet. <br />Thus far no mining of ore has been done below this level. Tlie present <br />ore reserves, based upon indicated and inferred ore probability as defined <br />by the U.S. Bureau of dines and Geological Survey, are sufficient to sustain <br />mining operations for approximately ten years or until the year 1987. <br />Table D-2 shows the ore reserves based upon the most recently available <br />data and presents information relative to the size and location of each <br />area to be worked along with information regarding the depth and approximate <br />thickness of the ore deposit. <br />• Table D-2 <br />*Total Ore Reserves <br />Location of Ore <br />Down Through 11 <br />12th Level/5300 <br />13th Level/5200 <br />14th Level/5100 <br />15th Level/5000 <br />16th Level/4900 <br />17th Level/4800 <br />18th Level/4700 <br />19th Level/4600 <br />20th Level/4500 <br />23rd Level/4200 <br />th Level <br />ft. <br />ft. <br />ft. <br />ft. C~~~J~~~~IAL <br />ft. <br />ft. <br />ft. <br />ft. <br />Total Ore Reserves <br />*Indicated and inferred <br />Size of Reserve, Tons <br />783,215 <br />85,219 <br />90,064 <br />82,478 <br />88,706 <br />73,522 <br />108, 5:.0 <br />15,000 <br />84 0 <br />7,000 <br />16,800 <br />1,692,774 <br />The resource development schedule shown in Table D-3 is based upon <br />• experience in the previously developed levels of the mine, ar~d upon <br />D-17 <br />