[Ditto]

The thorium approach was abandoned because it didn’t produce materials for nuclear weapons.

Really? Then explain why the United States never used Light Water reactors to produce weapons materials.

[DuncanWaring]

I don’t know the details.

The explanation I’ve heard for the discontinuation of the US government thorium reactor program was that it was somehow inconsistent with the rest of the uranium/plutonium activities, which were oriented towards weapon production.