Assertion: protactinium's number | /r/HasProperty | run on thorium-based fuels
Facets:
value: the last decades
type: TEMPORAL
Source sentences:
text: So, although a number of nuclear reactors worldwide have been run on thorium-based fuels the last decades, and some have even been connected to the electrical grid, it may yet be a long time until our houses and streets are again lit up with thorium based technology.