Leonard Owen
... that Leonard Owen oversaw the building of Calder Hall, the world's first nuclear power station to produce electricity on a commercial scale?
... that <b id="mwAoU"><a href="./Leonard_Owen" id="mwAoY" rel="mw:WikiLink" title="Leonard Owen">Leonard Owen</a></b> oversaw the building of <a href="./Sellafield#Calder_Hall_nuclear_power_station" id="mwAoc" rel="mw:WikiLink" title="Sellafield">Calder Hall</a>, the world's first nuclear power station to produce electricity on a commercial scale?