Oregon Construction Contractors Board
700 Summer Street NE, Suite 300
P.O. Box 14140
Salem, OR 97309-5052
Telephone: (503) 378-4621 ext. 4900
Fax: (503) 373-2007
http://www.oregon.gov/CCB/index.shtml/ 

Bureau of Alcohol, Tobacco, Firearms, and Explosives

http://www.atf.gov

Department of the Interior

http://www.doi.gov

Department of Transportation

http://www.dot.gov

Explosives Academy 

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Occupational Safety and Health Administration