On the one-year anniversary of the Gulf oil spill that killed 11 workers and produced what has been called the greatest environmental disaster in U.S. history, BP, p.l.c. today filed blockbuster lawsuits in federal district court in New Orleans seeking over $80 billion in damages against Transocean Ltd., the owner and operator of the doomed Deepwater Horizon rig, Cameron International Corp., the manufacturer of the failed blowout preventer, and Halliburton, responsible for the well's concrete.

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