Merrimack Valley September 13, 2019 8:05 am 1 Year Since Merrimack Valley Explosions It’s been one year since thousands of residents in Lawrence, North Andover and Andover were affected by the natural gas pipeline explosions in the Merrimack Valley. US & World Videos 3:22 Forecast: Seasonable Wednesday 1:53 Former MSP recruit speaks about trainee's death, academy conditions 1:51 Crews working to fix water main issue in Dorchester 2:14 2 candidates get early jump on race to unseat Norfolk County DA 3:04 Former MSP trainee who knew dead recruit details racist, bullying allegations at academy