§ Mr. Kaufmanasked the Secretary of State for Trade if he will state the quantities of strategic nuclear material transferred between the United Kingdom and other countries in the last 10 years.
§ Mr. Norman Lamont[pursuant to his reply, 27 April 1981, c. 336]: Strategic nuclear material is not a defined term, but is taken to mean separated plutonium and highly enriched uranium—that is, uranium enriched to 40 per cent. or more in the isotope U-235. From 1971, transfers of these materials in consignments larger than gram quantities for civil purposes have been in gross terms:
Exports of plutonium 3,210 kg. Imports of plutonium 560 kg. Exports of HEU 660 kg. Imports of HEU 640 kg. All the above exports have been for use in materials testing reactors or in research, and have been subject to the application of relevant bilateral or multilateral safeguards agreements.