Reuters: London-based BP Plc’s plan to lower a giant containment dome to trap oil from a blown-out Gulf of Mexico oil well on the sea floor hit a technical obstacle on Saturday in the form of methane hydrates, or flammable ice, a BP executive said on Saturday. BP officials are scrambling for a solution after methane hydrates stopped up the 98-ton containment dome as they were maneuvering it into place, Doug Suttles, BP’s chief operating officer, told reporters at a briefing in …