Joy walking miner

Joy walking miner

[′jȯi ¦wȯk·iŋ ′mīn·ər]
(mining engineering)
A continuous miner designed to make thin seams; a walking mechanism is used instead of caterpillar tracks for moving the miner.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.