main-and-tail haulage

main-and-tail haulage

[′mān ən ′tāl ′hȯl·ij]
(mining engineering)
A single-track haulage system that is operated by a haulage engine with two drums, each with a separate rope.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.