abnormal place
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abnormal place
(ab′nör·məl ′plās)
(mining engineering) An area in a coal mine where the geological conditions render mining uneconomical.
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McGraw-Hill Science & Technology Dictionary
McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
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