multiple-entry system

multiple-entry system

[′məl·tə·pəl ′en·trē ‚sis·təm]
(mining engineering)
A system of access or development openings generally in bituminous coal mines involving more than one pair of parallel entries, one for haulage and fresh-air intake and the other for return air.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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