No great shakes: Quakes triggered by drilling waste seem weaker than natural ones, study says

  • by: SETH BORENSTEIN , Associated Press
  • Updated: August 18, 2014 - 7:04 PM

WASHINGTON — 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.

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