Explanatory notes
… elsewhere in the Nomenclature : (A) Tungsten (wolfram) (heading 81.01), molybdenum (heading 81.02), tantalum … (heading 81.03), magnesium (heading 81.04), cobalt, including cobalt mattes and other intermediate products of … chromium, hafnium, rhenium, thallium, cadmium, germanium, vanadium, gallium, indium and niobium (columbium) (heading …