Joy longwall loading machine

Joy longwall loading machine

[′jȯi ¦lȯŋ‚wȯl ′lōd·iŋ mə‚shēn]
(mining engineering)
A modified Joy loader comprising a hydraulically elevated loading head fitted with mechanical gathering arms.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.