Although no one has ever used a cofferdam at the 5000-foot depth of the Gulf oil leak, the immense, four-story, 100-ton concrete box arrived this morning at the site of the insane, absurd, horrid disaster. (The current spill area and projections, as of last night, are above.) They will begin to lower the monster critter at noonish. And they “believe” that the mix of oil, gas and water can safely be separated as the cofferdam funnels the leak materials up a pipe to a ship without, you know, exploding all over. Maybe so! Meanwhile, Louisiana residents have gone on an orgy-bender of seafood ingestion, since as of pretty much immediately they won’t have any anymore, and none of them will ever eat that garbage farm-raised crud that passes for shrimp.