BP oil spill: failed safety device on Deepwater Horizon rig was modified in China

BP ordered the owner of the Deepwater Horizon rig, whose explosion led to the worst environmental disaster in US history, to overhaul a crucial piece of the rig's safety equipment in China, the Observer has learnt.

http://www.guardian.co.uk/environment/2010/jul/18/deepwater-horizon-blow-out-preventer-china