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its capability of safely mining a high percentage of the inplace <br /> coal resource under more than 1500 feet cover . Shortly there- <br /> after Mid-Continent pioneered a volley firing technique to <br /> control coal outbursts, and remote radio control of continuous <br /> miners . These developments resulted in improved safety and made <br /> heretofore unminable coal minable. Latest world-wide, state-of- <br /> art mining technology is employed in Coal Basin to insure maximum <br /> recovery of the available coal resource. <br /> In 1979 Mid-Continent contracted to participate in <br /> a multi-lift longwall mining demonstration for the U. S . Depart- <br /> ment of Energy to investigate and demonstrate the feasibility of <br /> increasing resource recovery by mining thick underground coal <br /> seams with superimposed longwall panels . If successful, the <br /> mining demonstration will prove the feasibility for increased <br /> coal recovery in thick underground coal seams throughout the <br /> United States . In addition, portions of the mining demonstration <br /> will be the development of a safe mining system for recovering <br /> deep coal at depths of cover in excess of 3, 000 feet . The <br /> results of this important demonstration/research should be <br /> available by 1989 . <br /> 3 . Operation description <br /> a . Description of mine plan area <br /> The Mid-Continent Resources Coal Basin Mine <br /> r Plan Area is located on both sides of Huntsman Ridge with the <br /> Y <br /> t <br /> mine entries and facilities all existing on the east slope within <br /> lthe topographic basin (Coal Basin) drained by Coal Creek, tributary <br /> �J <br />