I loved that story back then... with the advent of optical lattice clocks, and smaller sources, etc... have you done an update to the experiment?
http://www.leapsecond.com/great2016a/
And in 2018 I was asked to be part of a "time travel" episode on a History channel show. We used Palomar Mountain in California:
http://www.leapsecond.com/great2018a/
Each experiment was a little different; different combination of clocks, different audience, different mountain, different elevations, different latitude, etc.
Of all the clocks you own, what's your favourite and why?