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Prior to 1976 all development and production <br /> of coal was done with mining sections consisting of a continuous <br /> miner, loading machine and shuttle cars . In 1976 longwall mining <br /> was introduced and production is now and will continue to be by <br /> both longwall and continuous mining methods . Underground coal <br /> haulage is by belt conveyors from the section dump points to the <br /> surface. <br /> Planned mine developments are shown on <br /> Exhibit II-A-2. All development will be done with continuous <br /> miners . If rock dikes are encountered they will be blasted with <br /> explosives . Production panels will be mined with mechanized <br /> longwall methods utilizing hydraulic powered shields for roof <br /> support and a shearing machine for actual cutting of the coal . <br /> Mid-Continent Resources and the Department of <br /> 4 <br /> Energy have entered into a contract to demonstrate the feasibility <br /> of multilift mining in thick coal seams . The Dutch Creek (#l) <br /> mine was selected as the site for this demonstration which will <br /> require approximately eight to ten years to complete. Briefly, the <br /> objective of the demonstration is to extract a second longwall <br /> panel immediately below a previously mined panel. A successful <br /> demonstration will substantially increase recoverable coal reserves <br /> from thick coal seams . <br /> (2) Dutch Creek No. 2 Mine. <br /> Dutch Creek No. 2 Mine is essentially a drift <br /> mine in the Dutch Creek seam and is located stratigraphically <br /> approximately 450 ft. above the Dutch Creek No . 1 Mine and L. S . <br />