(b) of materials in ponderable quantities which can be used in the production of nuclear energy, such as lithium 6, lithium 7, nitrogen 15 and boron 10;
(b) d’ábhair i gcainníochtaí inmheáite is féidir a úsáid chun fuinneamh núicléacha tháirgeadh, mar litiam-6, litiam-7, nitrigin-15 agus bórón-10;