Weapon grade uranium must reach ninety percent purity
While nuclear power plants typically run on fuel enriched to just five percent, creating a nuclear weapon requires a far more intensive concentration process.
Uranium is a naturally occurring radioactive element with unique properties that allow it to power cities or level them. To be useful for either, it must undergo enrichment, a process that increases the concentration of the isotope uranium 235. This isotope is the essential component of nuclear fuel, but the level of concentration required depends entirely on the intended use.