Crewmen aboard the motor vessel Joe Griffin look on as the mobile offshore drilling unit Q4000 lowers a pollution containment chamber, Gulf of Mexico, May 6, 2010. The chamber was designed to cap the oil discharge that was a result of the Deepwater Horizon incident. Crewmen aboard the motor vessel Joe Griffin look on as the mobile offshore drilling unit Q4000 lowers a pollution containment chamber, Gulf of Mexico, May 6, 2010. The chamber was designed to cap the oil discharge that was a result of the Deepwater Horizon incident. SHARE: Download: Full Size (8.68 MB) Tags: Photo Essays Credit: VIRIN: 191019-E-WOR57-576.jpg Photo Gallery