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Polymeric Sealant Used to Stop Shale Degradation in Coal Mines.
Franklin-JC; Weverstad-KD; Marquardt-RF
NTIS: PB 264 294 :8 pages
The Bureau of Mines substantially reduced shale degradation in a coal mine by two spray coat applications of a water-base epoxy sealant. More than 12,700 square feet of passageways were treated, and in 18 months only one failure occurred. This failure was due to improper spray application. Material costs averaged 13 cents per square foot, and labor costs were 7 cents per square foot. Labor included moving all materials into the mine, the setup time for each of the areas coated, and application of coatings.
NTIS Accession No.
NTIS: PB 264 294
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division