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Improving the Self-sealing Brattice.
NTIS: PB 297-263 :95 pages
A refined and improved self-sealing brattice for use in coal mine rescue and recovery operations for directing the flow of air was developed and tested. The brattice is made from a lightweight, low- cost material that meets Mine Safety and Health Administration flammability requirements. The units can be erected using pins, spads, or lightweight extensible poles. Tests were conducted to determine leakage rate from minimal to a maximum of 1.5 In h2o. The ability to handle reverse flows was demonstrated and a nonflammable foam was used as an auxiliary sealing agent.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB 297-263
Goodyear Aerospace Corp.
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division