From Climate Progress:
Three attempts to pump mud and 16 tries to stuff solid material into a breached Gulf of Mexico oil well failed to stop the flow, top BP executives said Saturday, and engineers and executives with the oil giant have decided to “move on to the next option.”
That option is a vaguely-defined cap called the "Lower Marine Riser Package". How is it different from the previous dome they tried to cap the leak with? They didn't say.
As the mood gets progressively grimmer in the Gulf, some voices have begun to express fear that the relief well - something BP says is the only permanent solution - may not even be able to make it stop. We won't know until August, when BP plans to put such a well in place.