Metro

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.