boomer
n.— «For some projects, such as the blast furnace, union tradesman from as far away as New York and California—known in construction as “boomers” and travelers—are coming to Northwest Indiana and Illinois to work. “There is currently a severe shortage of trained craftsman nationally.”» —“Construction jobs building” by Keith Benman Times (Munster, Indiana) May 14, 2006. (source: Double-Tongued Dictionary)