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5 years after BP spill, drillers push into riskier depths

5 years after BP spill, drillers push into riskier depths

Five years after the nation's worst offshore oil spill, the industry is working on drilling even further into the risky depths beneath the Gulf of Mexico to tap massive deposits once thought unreachable. Opening this new frontier, miles below the bottom of the Gulf, requires engineering feats far beyond those used at BP's much shallower Macondo well. But critics say energy companies haven't developed the corresponding safety measures to prevent another disaster or contain one if it happens — a sign, environmentalists say, that the lessons of BP's spill were short-lived. These new depths and larger reservoirs could exacerbate a blowout like what happened at the...

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