Region 8 of the Environmental Protection Agency includes Montana. This site is an excellent source for local and regional environmental information, including information about local Superfund sites.
"The Montana Department of Agriculture manages more than 30 programs, from marketing and business enhancement to licensing and regulating various activities to protect agricultural producers, consumers and the environment."
The DoJ includes the Attorney General's Office, Driver Services, Consumer Protection, Gaming Regulation, Law & Water Rights, Victim Services, & law enforcement resources.
"The Montana Historical Society Research Center collects, preserves, and provides access to a wide array of research collections, including manuscripts, government records, books, maps, and photographs about Montana and the west."