Technically, it's in Kendall Sq., so not really "Downtown," to the extent that Cambridge actually has a "downtown". Every now and then, they'll offer a public tour of the reactor, but I have yet to be able to score a ticket--they're very limited, and are all taken within hours of availability. And during lat year's open house, due to my own bad planning, I missed out on a tour of the fusion research lab.
Originally Posted by Worker 11811
Given that my entire neighborhood is surrounded by biotech research labs, MIT's reactor is not high on my list of worries.
I'd be really surprised if the fuel was really "weapons grade." Technically, I suppose, any "highly-enriched uranium" could be fashioned into a bomb, but I'd guess what they had was way below what is usually used in bombs.