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f <br /> CONSTRUCTION PROCEDURES AND MODIFICATIONS <br /> COAL REFUSE DISPOSAL FACILITY AND <br /> 'ROCK TUNNEL WASTE DISPOSAL FACILITY <br /> COAL BASIN MINES, REDSTONE, COLORADO <br /> FOR ACID-CONTINENT RESOURCES, INC. <br /> GEO-HYDRO CONSULTING, INC. <br /> JOB NUMBER 1028 - 008 <br /> MAY, 1934 <br /> 12 GE04fynao CONSULTING,INC. <br />