On 19 Jul 2013 at 7:44, Fox, Ian wrote:
> The only 3 metals that I know of that expand on solidification are Bi,
> Sb and Ga, and since Ga melts at 31 degC that must be the one. Quite
> what the relationship is with Gran Sasso I have no idea, except that
> it's the site of one of Italy's national labs...............
Yesss! They used it in one of their famous neutrino detectors...
regards
Matthias
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