Boeing will expand its manufacturing site in Helena, Mont. by nearly 50% to support demand for Boeing commercial airplanes and new work for the Boeing 787-10 Dreamliner. Boeing Chairman, President and CEO Jim McNerney made the announcement at the Montana Jobs Summit in Butte. The nearly $35m expansion will add more than 55,000 ft² of manufacturing space, bringing the Boeing Helena facility to 167,099 ft². Construction will begin this fall on the south side of the existing facility, with estimated completion by the fourth quarter of 2014. Boeing expects the expansion and increased work to add 20-25 people to the 144-person workforce. Boeing Helena manufactures complex parts for the 737, 747, 767 and 787 models from hard metals like titanium. Combined with its supply network in Montana, Boeing contributes significantly to the state’s economy.