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RT @USGS_Pubs: Case study: import reliance on essential barite for #oil and gas #exploration https://t.co/C8TlVGOTqw https://t.co/kFyYroM0Hp
RT @USGS_Pubs: Case study: import reliance on essential barite for #oil and gas #exploration https://t.co/C8TlVGOTqw https://t.co/kFyYroM0Hp