pick-a-back conveyor

pick-a-back conveyor

[′pik·ə‚bak kən‚vā·ər]
(mining engineering)
A short conveyor that advances with a loader or continuous miner at the face of a mine and loads coal on the main haulage system.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.