Fracking is also known as horizontal natural gas drilling. (Carolyn Cole/Los Angeles Times/MCT)
Fracking is also known as horizontal natural gas drilling. (Carolyn Cole/Los Angeles Times/MCT) Los Angeles Times/MCT
Fracking is also known as horizontal natural gas drilling. (Carolyn Cole/Los Angeles Times/MCT) Los Angeles Times/MCT

Fracking drives growth in sand mining, raises new health-risk questions

October 13, 2014 03:52 PM

UPDATED October 13, 2014 08:24 PM

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