AP: New Test Results Due at Wyoming Fracking Site

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New results are expected to be released later today of tests on groundwater near a Wyoming gas field where the U.S. government linked fracking to water contamination in late 2011.

The Associated Press reports that the U.S. Geological Survey has been taking samples from a well near Pavillion, Wyo., which had earlier been contaminated. Hydraulic fracturing, or "fracking," had been taking place at a nearby gas field. Fracking is the practice of pumping highly pressurized water, sand and chemicals into wells in order to enhance gas flows in rock formations deep in the earth's core.

The latest round of testing included representatives from the USGS, the U.S. Environmental Protection Agency, the State of Wyoming and two American Indian tribes, the Northern Arapaho and Eastern Shoshone who live on the Wind River Reservation near Pavillion.