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Chapter II <br />e. Old Refuse Pile- Topsoil. <br />• For reclamation of the old refuse pile, 45,152 cubic yards of combined A and B <br />horizon material has been spread over the pile at depths of 6" to 12" between <br />1977-1987. All available A and B horizon material which could be found in the area <br />has been used for the purpose. <br />6. Overburden. <br />As defined under 1.04(83) of the regulations, overburden is not applicable to the <br />Mid-Continent operations. <br />1.04 (83) "Overburden" means for surtace coal mining activities, materials of any <br />nature, consolidated or unconsolidated, that overlies a coal deposit, excluding <br />topsoil. <br />Materials which were excavated in construction of the Adit/Rock Tunnel are covered <br />under Section II-B-9 as underground development waste. <br />7. Coal Handling Structures. <br />a. Adit/Rock Tunnel to Load-out. <br />• Conveyor belts are used extensively in the Mid-Continent operations. See Exhibit <br />II-B-7. <br />Coal is transported from the working face through one entry of the Adit/Rock Tunnel <br />via conveyor belt. The belt carries the coal out the portal of the Adit/Rock Tunnel <br />and overland to the raw coal stockpile(s), where it is deposited. <br />The overland conveyor system which carries coal from the mine to the Preparation <br />Plant is a covered belt, 48" wide, which extends 5,350'. The segment of the <br />overland conveyor system which extends from the Adit/Rock Tunnel to the first <br />transfer is 3600' long; the segment extending to the M-bed coal stockpile is 350' <br />long; to the B-bed coal stockpile is 650' long. <br />The section extending over the tunnel yard is elevated on trusses and bents. The <br />section from the transfer point to the M-bed storage pile is elevated, on trusses, <br />over the road. <br />The overland conveyor is covered, to minimize dust emissions, and the belt itself is <br />turned in order to prevent coal falling on the ground beneath. <br /> <br />36 <br />