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Massachusetts gas explosions were result of 'overpressure': NTSB

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The National Transportation Board (NTSB)said Sunday that a series of gas explosions in Massachusetts resulted from gas flowing into homes at significantly greater flow rates than should have occurred. NTSB chairman Robert Sumwalt said his job now is to find out why that happened. For more info, please go to Subscribe to Global News Channel HERE: Like Global News on Facebook HERE: Follow Global News on Twitter HERE: