The International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers, AFL-CIO (IW), is a trade association whose beginnings go back to the 1890s. The IW represents 120,000 members in North America.
The International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers, AFL-CIO (IW), is a trade association whose beginnings go back to the 1890s. The IW represents 120,000 members in North America.