But the Trust's Juliet Lyon told BBC Wales that the overcrowding did, nevertheless, cause operational problems.

BBC: Jail crowding worse than ever

In "every contributing cause where Halliburton is named, the operational responsibility lies solely with BP, " Halliburton said.

WSJ: Final Oil-Spill Report Chastises BP, Others

Now efforts are made to develop operational integrated forecasting and warning systems, considering various hazards in coastal zones altogether that cause coastal inundation.

UNESCO: Communication and Information