[tony549]

The First molten salt reactor experiment (MSRE) was conducted in the mid to late 60’s by ORNL. It was initially operated using U235 but was later switched to U233 (bred from U238).

[nuke_road_warrior]

The First molten salt reactor experiment (MSRE) was conducted in the mid to late 60’s by ORNL. It was initially operated using U235 but was later switched to U233 (bred from U238).

Wikipedia article here https://en.wikipedia.org/wiki/Molten-Salt_Reactor_Experiment