(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 ís féidir a úsáid chun fuinneamh núicléach a tháirgeadh, mar litiam-6, litiam-7, nitrigin-15 agus bórón-10;