From the BP May 29 press release
Despite successfully pumping a total of over 30,000 barrels of heavy mud, in three attempts at rates of up to 80 barrels a minute, and deploying a wide range of different bridging materials, the operation did not overcome the flow from the well.
The Government, together with BP, have therefore decided to move to the next step in the subsea operations, the deployment of the Lower Marine Riser Package (LMRP) Cap Containment System.
BP also has recently come out in denying the existence of underwater plumes of oil/dispersant. BP clashes with scientists over deep sea oil pollution. Hopefully scientists can manage their public relations better this time and finally gain more credibility than BP.
Today I was just saying how it's hard to really feel empathetic with Louisianans over this spill when many of them still support the oil industry and ridiculed those who warned of inevitable environmental destruction. Ironically, right after I said that a Louisianan congresswoman came on the radio and talked about how she and her constituents are against the 6 month off-shore drilling moratorium imposed by Obama.