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March 4, 1964

S. A. Levin, L.R. Powers, and E. Von Halle, Union Carbide Corporation Nuclear Division, 'Nth Power Evaluation'

Union Carbide Nuclear Company updates their previous study on the ease with which other nations could secretly create nuclear weapon facilities using the gas centrifuge.

April 22, 1960

A.R. Luedecke, General Manager, Atomic Energy Commission, to Philip J. Farley, Department of State

The AEC agrees to initiate talks with Western European nations in the attempt to control nuclear proliferation through the classification of gas centrifuge technology.

April 9, 1960

Atomic Energy Commission, 'Gas Centrifuge Method of Isotope Separation,' AEC 610/15

Having read the Union Carbide and General Electric reports on gas centrifuges, and taking into account West Germany and The Netherlands’ unwillingness to classify their programs, the AEC looks into other courses of action, including collaboration with the other two nations and even declassifying their own program.

March 23, 1960

Philip J. Farley, special Assistant to the Secretary of State, to Algie A. Wells, Director, Division of International Affairs, Atomic Energy Commission, 'Control of and Cooperation in Gas Centrifuge Research and Development Program'

As West Germany and The Netherlands developed ultra-centrifuges without a classification policy, the AEC discuss ways to keep the technology under wraps without arousing suspicion from the other members of Euratom.

February 26, 1960

S.A. Levin, D. E. Hatch, and E. Von Halle, 'Production of Enriched Uranium for Nuclear Weapons by Nations X, Y, and Z by Means of the Gas Centrifuge Process,' Operations Analysis Division, Union Carbide Nuclear Company

A Union Carbide Nuclear Company study to determine how quickly and easily foreign countries could develop and utilize gas centrifuges with the goal of creating nuclear weapon facilities. The study determines that, due to the cheap cost and relatively small size of the centrifuges, even un-industrialized countries such as Cuba could achieve this technology within 8 years if helped by a larger nation.

February 19, 1960

A.A. Wells, Director, Division of International Affairs, to Philip J. Farley, Special Assistant to the Secretary of State for Disarmament and Atomic Energy, 'Control of and Cooperation in Gas Centrifuge Research and Development Program'

The development of the gas centrifuge method, according to this report, would make production of U-235 (and by extension, nuclear weapons) possible for as many as 20-30 foreign countries. The U.S. is thus forced to consider its strategy for how to limit proliferation despite this new, cheap technology.

December 7, 1959

C. L. Marshall, Director, Division of Classification, to A. A. Wells, Director, Division of International Affairs, 'Cooperation in the Field of Gas Centrifuge'

US Atomic Energy Commission classification director C. L. Marshall explains to international affairs director A. A. Wells that the design for the gas centrifuge must be classified for fear of providing an “unfriendly nation” a low-energy consuming method for “the separation of heavy isotopes…an important part of a [nuclear] weapons program.”

September 29, 1976

Discussion between SWAPO with Dr Henry Kissinger, US Secretary of State, in New York

Dr. Kissinger expresses his proposal for a conference on Namibia to be attended by SWAPO (South West Africa People's Organization), Turnhalle members, and South Africa. The Conference concerned the ongoing struggle for independence by Namibian guerrillas from South African rule. Kissinger pledged US support to SWAPO as the leading force in Namibia, but Namibian delegates responded that they would not attend the conference unless South Africa met all preconditions including the withdrawal of troops from Namibian territory.

March 10, 1980

The North-South Dialogue and Potential Codel Visit to North Korea

Assistant Secretary Holbrooke informs the American Embassy in Seoul that Ambassador Kim Yong-sik and the ROK are extremely upset by Congressman Solarz's intent to go to Pyongyang. He emphasizes that Solarz is aware of US policy toward North Korea and would not carry a message from the US during his visit.

March 10, 1980

Congressman Solarz Visit to North Korea

The Department of State notes that the ROK media reported LDP Diet member Mihara's decision not to go to Pyongyang, heightening the visibility and sensitivity of a visit by Congressman Solarz to the DPRK.

Pagination