… hafnium, rhenium, thallium, cadmium, germanium, vanadium, gallium, indium and niobium (columbium), and articles of …
Explanatory notes
… hafnium, rhenium, thallium, cadmium, germanium, vanadium, gallium, indium and niobium (columbium), and articles of … from the ore germanite (copper germano‑sulphide) and from gasworks’ flue dusts. It is a greyish‑white metal with … used in alloying with steel, copper, aluminium, etc. (E) GALLIUM Gallium is obtained as a by‑product in the …