'Source materials' means uranium containing the mixture of isotopes occurring in nature: uranium whose content in uranium-235 is less than the normal: thorium; any of the foregoing in the form of metal, alloy, chemical compound or concentrate: any other substance containing one or more of the foregoing in such a concentration as shall be specified by the Council, acting by a qualified majority on a proposal from the Commission.
Ciallaíonn 'bunábhair' úráiniam ina bhfuil an meascán iseatóipí atá sa nádúr; úráiniam ar lú ná an normal an cion d'úráiniam-235 atá ann; tóiriam; aon cheann de na hábhair roimhe seo i bhfoirm miotail, cóimhiotail, comhdhúile ceimicí nó tiubhachain; substaint ar bith eile ina bhfuil ceann amháin nó níos mó de na hábhair roimhe seo i dtíubhachan mar a shonróidh an Chomhairle, ag gniomhú di tri thromlach cáilithe ar thogra ón gCoimisiún.