Apprenticeship Information - Management and Unions Serving Together http://www.must.org Asscociated General Contractors - Greater Detroit Chapter http://www.detroit.agc.org Building Trades Department, AFL-CIO http://www.buildingtrades.org National AFL-CIO http://www.aflcio.org Michigan State AFL-CIO http://www.miaflcio.org International Union of Painters and Allied Local 42 http://www.iupat-local42.org Sheet Metal Workers Local 80 http://www.sheet80.org