Interactive graphic: The ins and outs of fracking

Published: Sunday, Jun. 30, 2013 - 12:00 am
Last Modified: Wednesday, Mar. 19, 2014 - 7:08 pm

Hydraulic fracturing or “fracking” is a method of extracting oil and gas that are inaccessible by conventional drilling. Fracking has become increasingly common over the past decade and accounts for a large proportion of oil and gas production in the United States. Fracking involves freeing the gas or oil trapped in non-permeable layers of shale by fracturing the layer, thus freeing up the gas or oil. Click the button to begin the process:


Graphic by Mitchell Brooks mbrooks@sacbee.com
Sources: McClatchy Tribune, ProPublica, FracFocus

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