Here is a useful collection of relevant links to the steel construction industry:

American Institute of Architects, Michigan Chapter

American Institute of Steel Construction

American Welding Society

American Society for Testing & Materials

American National Standards Institute

Detroit Regional Chamber

IMPACT (Ironworker Management Progressive Action Cooperative Trust)

International Union of Operating Engineers

Ironworkers Local 25

Ironworkers Local 340

International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers

Management and Unions Serving Together

Michigan Department of Energy, Labor and Economic Growth (DLEG)

Michigan Secretary of State

Michigan Society of Professional Engineers

National Coordinating Committee for Multi-Employer Plans (NCCMP)

National Maintenance Agreements Policy Committee, Inc (NMAPC)

Operating Engineers Local 324

Steel Joist Institute

TAUC – The Association of Union Constructors

U.S. House of Representatives

U.S. Occupational Safety & Health Administration

U.S. Senate