With pressure from the public and courts growing for Brazil’s government to do more, Vice President Hamilton Mourão said Monday that 5,000 more troops will be dispatched to help clean up oil polluting the nation’s northeastern coast. Mourão told reporters about 600 tons of crude had been recovered since the sludge began appearing at the start of September. “The most we can do today is have trained people to collect this oil that is reaching our beaches,” Mourão said, adding that investigations into the source of the contamination continued.