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![]() Date: 2011-08-25 15:22:12Petroleum production United States Shale gas Hydraulic fracturing in the United States Environment of the United States Safe Drinking Water Act Natural gas Proppants and fracking fluids Oil well Hydraulic fracturing Petroleum Energy | Source URL: static.ewg.orgDownload Document from Source WebsiteFile Size: 918,59 KBShare Document on Facebook |