Oklahoma hit with 70 frackquakes in one week

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Oklahoma hit with 70 frackquakes in one week
http://www.usatoday.com/story/news/2016/01/07/small-earthquakes-shaking-oklahoma-blamed-deep-injection-wells/78421444

A state report last year noted a connection between hydraulic fracturing and some earthquake "swarms," and state officials say there's a potential risk to the public due to the increase in quakes. Experts say the quakes are likely being caused by injection wells, which are particularly deep wells into which drilling byproducts and wastewater are injected