0 a common metal, such as lead, tin, or copper, that reacts easily with other chemicals and is not a precious metal -- 賤金屬（如鉛、錫、銅）
Sooner or later the time comes—and it comes sooner in the case of base metal mining—when the mine is worked out.
The ordinary mortal would probably agree that the words "base metal" are clear enough.
Admittedly, sanctions will affect, and are affecting, the tobacco trade, the base metal industries, such as asbestos and chrome, and others.
I do not understand whether that £3,200,000 is to include some of the base metal of 1922 to 1924.
Proof versions will be struck in silver and base metal.
The statutory exemption is for "pins of base metal".
I do not quarrel at all with the tax generally, but the base metal mining industry has largely departed from this country.
Was it done by putting base metal in?
