During an earthquake, tsunami, or nuclear meltdown, the safest place to be is in a mine.
So says Stuart Freedman, Lawrence Berkeley National Laboratory's spokesperson for the KamLAND neutrino experiment, whose 1879 glass photomultiplier tubes emerged from the earthquake unscathed. Both KamLAND and the Super-Kamiokande experiment, which contains 11,146 glass bulbs each 20 inches in diameter, are ensconced 3300 ft underground in the Mozumi mine. This is to protect both American-Japanese collaboration experiments from solar radiation that would obscure their data.
Unfortunately, it appears that the KEK-Tsukuba facility may have suffered extensive damage. The article further reported on J-PARC facility that survived the earthquake and the tsunami.