Takoma Park MD is a nuclear free zone, by ordinance. I'm a member of the NFTPC committee that reports on these issues to the city council. The text of the ordinance calls (in part) for city contracts to be ineligible if made with nuclear weapon manufacturers. [1]
Until ca. 2002, the city relied on an apparently-now-defunct nonprofit in Baltimore called "Nuclear Free America" for a publication called "Prime Nuclear Weapons Contractors: U.S. Departments of Defense and Energy Broad Nuclear Definition - Fiscal Year 2002 With Parent Company/Prime Contractor Cross References." [2] The document has not been released in some time, and tracking down the folks responsible has not been all that useful (although we know who they are and have been in contact). [3]
So here's the question: are there publicly-available resources for researching, on a case-by-case basis, the ties of corporations to manufacture and maintenance of nuclear weaponry? Seems like a good business library should provide the relevant information. We'd want to track known subsidiaries to parent companies, and cross-reference that list to a list of companies known to be in the business of contracting with DOD and DOE on nuclear weapons-related work. For example, a question has come up about "3M."
For just a little bit more about NFTPC you can check out our new-and-not-very-active-yet blog. [4]
[1] Section 14.04.060. See: http://takomaparkmd.gov/code/html/_DATA/TITLE14/Chapter_14_04_NUCLEAR_FREE_ZON.html
[2] For the front matter from the most recent publication, see: http://www.takomaparkmd.gov/clerk/agenda/items/2005/022805-4a.pdf
[3] Richard Torgerson is current, or perhaps immediate-past president of NFA. See his bio here: http://www.progressive-asset.com/who/team.html
[4] http://nftpc.blogspot.com/