Whether or not these are rank and file DUers or corporate operatives will be difficult to tell, but there will certainly be the potential for them to organize because the nuke industry has very sophisticated PR operations (I know because I have been engaged with them off and on for many years because I have worked as an antinuke activist and been engaged in NRC hearings and litigation)
Don't worry your ugly little head, I doubt this will be a problem. Honestly, what makes you think they'd waste their time with DU? Aside from being the most un-active activists on the planet (DUAC, DUAC), there aren't enough of you nutcases to warrant even passing attention. Kos, maybe...they at least have the numbers that make them worthy of attention. But if it helps you with your self esteem to think "big brother" is interested in anything you have to say, by all means let those words spew and fester.
Cindie