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bumps

 
(bəmps)

(mining engineering) Sudden, violent expulsion of coal from one or more pillars, accompanied by loud reports and earth tremors.


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Sci-Tech 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.  Read more