Ironworker-Management Progressive Action Cooperative Trust	Occupational Safety and Health Administration
The National Institute of Occupational Safety and Health	The Pacific NW Region X OSHA Education Center
Ironworkers Local 86 Seattle WA.	Ironworkers District Council Of The Pacific Northwest
International Association of Bridge, Structural, Ornamental, and Reinforcing Iron Workers	Evergreen Safety Council
Training & Inspection Resource Center	HAMMER Training and Education Center
OSHA Standard Interpretations	Washington State's Safety Standards for Construction Work, Steel Erection