Inquiries about procedures for nuclear export controls from nuclear nations to nonnuclear states led to the formation of the Zangger Committee, or the Non-Proliferation Treaty Exporters Committee. Fears among the nuclear states about proliferation of nuclear weapons technology resulted in the formation of this committee in early 1974. It was in part a progression of the Nuclear Non-Proliferation Treaty (NPT) of 1970. The committee was named after its chair, Claude Zangger, a Swiss official. Representatives from advanced industrial countries held a series of secret meetings to determine policy. This committee established a “Trigger List” of special nuclear materials that could only be exported under International Atomic Energy Agency (IAEA) safeguards. News of a nuclear test in India in May 1974 showed that this committee was not going to be effective unless a more active approach was undertaken. A larger, less secret London group formed the London Suppliers Guidelines to fill this void. The Zangger Committee meets in Vienna twice a year, and the deliberations are kept secret. By 1994, the Zangger Committee consisted of representatives from 29 nations. In 1999 the Zangger Committee is still active and includes all nuclear weapons states (23 nations are presented on the Zangger Committee) except for France and China. Both France and China refuse to cooperate on nuclear export controls.