a. Any dull, hollow sound produced in a coal seam or associated strata as a result of mining operations. See also: outburst; crump; rock bump; rock burst. Nelson
b. Sudden failure of the floor or walls of a mine opening, generally accompanied by a loud report and a sharp shock or jar. Long
c. An earth tremor occasioned by a rock failure, when that failure causes no damage to the workings. Spalding
d. A noise caused by a break in the roof underground. Mason
e. The actual movement due to the roof break. Mason
f. A sudden floor uplift due to a break in the floor. Mason
g. In coal mining, shock due to the movement of coal, floor, or roof strata, with sufficient violence to be heard and to shake the workings. Pryor, 3
h. Rebound caused by a sudden release of tension on the drill stem when a core breaks or snaps free of the bottom of the borehole. Long
i. A sharp, upward blow applied to the drivepipe, casing, or drill stem with a drive hammer. Long
Source:
Dictionary of Mining, Mineral, and Related Terms












    What Topic Is Your Geology Paper On?  

 ENTER YOUR TOPIC HERE:    

Over 70,000 Research Papers, Essays & Term Papers - Ready to Download!

<Navigation>


Search!


<Index>

Acoustics
Agriculture
Anthropology
Archaeology
Architecture
Biology
Biotechnology
Cancer
Chemistry
Composers
Dance
Electronics
Environment
Fine Art
Geology
Invertebrate
Plant
Political Science
Psychology
Scientists
Sociology


<Top Level>

WebRef.org
About Us
Copyright Notice
Privacy Statement


Iverson Software: Providing Reliable & Innovative Education Solutions since 1987!

About Us  DeveloDex™  OptiMall™  Success Tools  Tabularium™  WebRef™

Google
Search WWW Search webref.org


K12 Shipping
JourneyEd.com is the leading supplier of discounted software to students and faculty.


icon



Easy CGI Web Hosting
This site hosted by EASY CGI Web Hosting
Iverson Software Co., is not responsible for typographical errors. Information deemed to be accurate, but not guaranteed. Offers subject to change at any time. Copyright © 1987-2006 Iverson Software Co. Some material copyright of their respective holders. All Rights Reserved Worldwide.