Iowa Division of Labor             
1000 East Grand Avenue 
Des Moines, IA 50319-0209

Telephone:  (515) 242-5871  
http://www.state.ia.us/iwd/labor/index.html 

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