The deal will add $35 million in annual revenue, the South Portland company says.
The new layoffs will affect insulators, shipfitters and metal preparation technicians.
Settlement ends more than two years of legal trouble for best-selling author Greg Mortenson
Shares of the carmaker slid as much as 9 percent to $137.62 after reports of the latest fire.
Safety say the proposal would put more pressure on companies to comply with safety rules and make it easier for employees and the public to identify businesses with poor safety records.
Much of the gain came from a buildup in company stockpiles