Timmy Couvillion first saw the oil plume at the bottom of the Gulf of Mexico more than two months ago, but the memory still makes his skin crawl. His small marine construction company had been hired by the U.S. Coast Guard for its biggest job in years: containing the longest offshore spill in American history. To prepare for the work, his crew dropped a submersible robot 450 feet below the ocean surface to view the source of the pollution through its cyclops eye. The pictures it sent back were chilling. A hole as wide as a basketball court had opened on the sea floor and thousands of gallons of Louisiana sweet crude gushed through. Amberjack, a popular sport fish, meandered through millions of toxic oil bubbles rising through the dark water. “We saw a volcano coming up,” Couvillion recalled in a recent interview. “I had no […]