Drillers produce core sampling during geological work during exploration of the kaolin and clay deposits. Zaporozhye region, Ukraine. June 2012

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Photo credit: © Dmytro Tsykhmystro / Alamy / Afripics
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Keywords: clay, conducting, core, deposits, drillers, exploration, geological, june, kaolin, produce, refractory, region, screening, secondary, ukraine, work, zaporizhia