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Less shake from artificial quakes, fed study says http://apocadocs.com/s.pl?1408465616 
 
Man-made earthquakes, a side effect of some high-tech energy drilling, cause less shaking and in general are about 16 times weaker than natural earthquakes with the same magnitude, a new federal study found.
People feeling the ground move from induced quakes -- those that are not natural, but triggered by injections of wastewater deep underground-- report significantly less shaking than those who experience more normal earthquakes of the same magnitude, according to a study by U.S. Geological Survey geophysicist Susan Hough. 
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[Read more stories about: 
fracking] 
 
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'Doc Michael says:
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Frackquakes are more lubricated. 
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