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Several hits there state that GE left the nuclear biz years ago. They have scaled down their energy holdings as well.
Did you see the part where I said it "was" in the nukes business and may still be? While they may not be in it nowadays up to their eyeballs, I'm guessing they still get some work for parts, components, etc. (albeit nuke production nowadays is fortunately in a lull, absent Dubya/McSame/neocon RRW work).
I'm not saying they're the "worst of the worst", but like any large conglomerate, they're hardly w/o gummint contracts, including, I'm sure, a fair number related to weapons systems.
Cheers,