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In page Fracking by country:
"Ukraine has a long history of hydraulic fracturing, since it has been used there since the 1950s.[1] There has also been a strong recent interest of the hydraulic fracturing industry in Ukraine.[2] According to the U.S. Energy Information Administration, Ukraine has third-largest shale gas reserves in Europe at 128 trillion cubic feet.[3] Since 2011, approximately 22 domestic and foreign-owned companies have been engaged in hydraulic fracturing in Ukraine.[citation needed]
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