To extend the temporary suspension of duty on a mixture of barium carbonate, strontium carbonate, calcium carbonate, and 1-methoxy-2-propanol acetate, for use as emitter suspension cathode coating.

Amends the Harmonized Tariff Schedule of the United States to extend the temporary suspension of duty on a mixture of barium carbonate, strontium carbonate, calcium carbonate, and 1-methoxy-2-propanol acetate, for use as emitter suspension cathode coating.