California Contractors' State License Board
9821 Business Park Drive
Sacramento, CA 95826
Telephone:  (916) 255-3900;   Fax: (916) 366-9130 

http://www.cslb.ca.gov/

CSLB has an automated,

toll-free number (1-800-321-2752)

you can use to order an application or get other information.

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 

Newsletter

Occupational Safety and Health Administration