small pollution containment chamber, known as the top hat
GULF of MEXICO- A small pollution containment chamber, known as the top hat, on the deck of the motor vessel Gulf Protector May 10, 2010. The chamber will be used in an attempt to contain an oil leak that was caused by the mobile offshore drilling unit Deepwater Horizon explosion. (USCG) 10Spill0510-G-8744K-034