BP cements Gulf oil well, sets up for permanent kill
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BP pumped cement down its blown-out Gulf of Mexico oil well on Thursday, sealing it off and setting up a planned permanent kill later this month of the source of the world's worst marine spill.
The cementing operation, to continue through Friday, followed earlier injections of heavy drilling mud this week that had subdued the upward pressure of the oil and gas. The deep-water Macondo well was provisionally capped in mid-July. (Reuters)
