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    Read the NTSB report on the Merrimack Valley gas fires, explosions

    LAWRENCE, MA - 9/14/2018:Aftermath scenes of Lawrence gas exposion, an interior view of a home destroyed by fire on 60 Jefferson Street Lawrence. (David L Ryan/Globe Staff ) SECTION: METRO TOPIC 15lawrencepic
    David L Ryan/Globe Staff
    An interior view of a home destroyed by fire on 60 Jefferson Street in Lawrence.