But it is clear that these experts provided a considerable amount of sensitive information about Urenco Group gas centrifuges. Urenco[12] is owned by Ultra-Centrifuge Nederland (Dutch),[13] Uranit GmbH (German) and British Nuclear Fuels plc (UK)[14] in three equal shares. The assistance was broad in scope, occurred regularly in the period 1988–1990, and included many advanced Urenco technologies.