Companies such as Harley Davidson Motor Co. in Milwaukee, Illinois Tool Works Inc. in Glenview, Ill. and Essve Tech Inc., a manufacturer of corrugated steel pipes in Alpharetta, Ga., are actively recruiting women to fill the shortage caused by a growth spurt in U.S. manufacturing due to lower energy costs, reshoring a more competitive labor market as Baby Boomers continue to retire. The U.S. Department of Labor estimated last spring that 241,000 factory jobs remained unfilled.