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COAL BASIN MINE PERMIT APPLICATION <br /> MID-CONTINENT RESOURCES, INC. <br /> CARBONDALE, COLORADO <br /> CHAPTER II <br /> MINE OPERATION PLAN <br /> A. OPERATION PLAN - ESTIMATED AREA FOR <br /> LIFE OF OPERATION <br /> 1 . General. <br /> Mid-Continent mines coal from two seams, separated by approximately 450 vertical <br /> feet. The operation is situated in a high mountain basin, known as Coal Basin. <br /> Mining is underground, at depth. <br /> Construction of surface facilities began in 1953, and mining began in 1956. <br /> Operations have been continuous since then. <br /> During the preceding permit term (1983-1988) the operations were modernized to <br /> allow for greater efficiency. Although the modernization program is not yet <br /> complete, the operation has changed substantially and major facets of the <br /> modernization program are operational. <br /> This chapter describes the operations at Coal Basin at the time of permit application <br /> submittal (December, 1987), and in the future. <br /> Because of the changes made during the last several years to the Coal Basin <br /> operations, Mid-Continent submitted, and MLRD approved, Permit Revisions, <br /> Technical Revisions and Minor Revisions. A chronological listing of these revisions, <br /> from 1982-1987, is included as App. II-B-4. <br /> The most significant changes to Mid-Continent's operations have resulted from the <br /> Adit/Rock Tunnel Project, and the new refuse disposal area. Calculations, designs, <br /> supporting data and background materials generated in planning these projects, in <br /> 1 <br />