LAWRENCE, Mass. (AP) — Some Massachusetts homeowners and small businesses are still struggling to return to normalcy after September's dramatic gas pipeline explosions, even as the utility responsible says the vast majority of customers have heat and hot water again. Columbia Gas said this week that only about 150 customers who opted to do required repairs themselves are still waiting for service to be restored, calling its work in the Merrimack Valley "substantially complete."Read more on NewsOK.com