Analysis of information sources in references of the Wikipedia article "Light-water reactor" in English language version.
... Afterwards, responding to Weinberg's interest, the fuel elements were arranged in lattices in water and the multiplication factors determined. ...
... We were so nervous because there had never been a reactor fueled with enriched uranium go critical before. ...
... We were so nervous because there had never been a reactor fueled with enriched uranium go critical before. ...