TRADES: The Michigan construction and manufacturing industries already face a shortage of skilled workers, and that shortage is likely to worsen. Associated Builders and Contractors West Michigan chapter, Downriver Career Technical Consortium and Michigan Workforce Development Institute talk about efforts to attract more young people to the skilled trades for well-paying jobs. Includes references to Grand Rapids, Muskegon, Saginaw, Jackson, Kalamazoo, Flat Rock, Madison Heights and Detroit. For news and business sections. By Kristia Potsema. FOR GRAND RAPIDS BUSINESS, CORP!, DETROIT, HOLLAND, LUDINGTON, MANISTEE, GREENVILLE, IONIA, MONROE AND ALL POINTS.