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Air-sealing Coal Mines to Reduce Water Pollution.
NTIS: PB 190 770 :33 pages
The Bureau of Mines air-sealed a 77-acre, above-drainage coal mine to evaluate sealing as a means of reducing the acid and metallic salt contents in drainage from abandoned mines. An approximate reduction in acidity of 150 ppm (equivalent to 193 pounds per day) and in iron of 98 ppm were directly attributed to sealing. The topographical, hydrological, and other factors involved in air- sealing are discussed, and the construction used to seal the mine is described.
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 190 770
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division