Uranium is naturally present in the rocks of the earth, and the abundance of fissionable 235 U was at least 3% or higher at all times prior to reactor startup.
And the abundance of fissionable 235 U was at least 3% or higher at all times before reactor startup. Uranium is naturally present in the rocks of the earth.
Uranium is naturally present in the rocks of the earth. And the abundance of fissionable 235 U was at least 3% or higher at all times before reactor startup.
Uranium is naturally present in the rocks of the earth. And the abundance of fissionable 235 U was at least 3% or higher at all times before reactor startup.