...mass spectrometry, particularly in the development of ion mobility spectrometry.
I think there's a lot to learn about the geochemistry of radionuclides from the place. While it scares the shit out of some people, I don't think the matter is quite as serious as credulous paranoia would have it. I wrote a rather long piece here on Hanford in response to an "I'm not an antinuke" antinuke here.
828 Underground Nuclear Tests, Plutonium Migration in Nevada, Dunning, Kruger, Strawmen, and Tunnels
It was a waste of time as far as addressing the antinuke, but a wonderful use of time for learning new things, one of which is that Hanford is kind of an Oklo redux that can tell us a great deal about the geology of radioactive materials. (The Oklo reactors were the naturally occurring nuclear reactors that operated a few billion years ago.)
It's interesting the discussion of mass spectrometry in the lecture, Laurence's "calutrons" at Oak Ridge. I actually did the Oak Ridge Tour when I took my son there for his undergraduate summer internship at the National Neutron Spallation Facility. There is a calcutron on display. After watching the lecture, I learned the etymology of "calcutron," the word.
It's a wonderful lecture. I highly recommend watching it. I wish that the entire course was on line.