Extensible Face Ventilation Systems - Duct and Brattice.
NTIS: PB/265-067 Available for Reference At Bureau Libraries :209 pages
This report describes the results of a 2-year investigation of extensible face ventilation techniques and systems for use at the working face in underground coal mines. The objective was to provide a safe and convenient method of maintaining the extensible system within 10 feet of the face, thereby ensuring good ventilation. A summary of approximately 20 extensible ventilation systems proposed or tried in the past is included for reference, together with a detailed description of the design, construction, and underground testing of a new extensible brattice panel and a new fiberglass duct system.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB/265-067 Available for Reference At Bureau Libraries