The chamber is the latest idea BP engineers are trying after an oil rig drilling a well for BP exploded on April 20, killing 11 workers. It sank two days later.
The chamber is intended to siphon off the gusher via a mile-long pipe onto a ship. The idea is to keep the siphon going until a relief well can be drilled in two to three months that would allow the blownout well to be capped. MSNBC