33(1)(b)

contains information or matter: (i) that was communicated in confidence by, or on behalf of, a foreign government, an authority of a foreign government or an international organisation (the foreign entity) to the Government of the Commonwealth, to an authority of the Commonwealth or to a person who received the communication on behalf of the Commonwealth or an authority of the Commonwealth (the Commonwealth entity); and (ii) which the foreign entity advises the Commonwealth entity is still confidential; and (iii) the confidentiality of which it would be reasonable to maintain
— Section 33(1)(b) of the Archives Act 1983

425

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61

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48

series

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25.614117647058823

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Here's some examples of closed files that cite this reason…

Series Control Symbol Title Contents dates
AWM54 179/1/20 PART 16 [Chemical Warfare - General:] Australian Military Forces: Technical Notes and Staff Notes - Chemical Warfare [Part 16 of 19] 1945 - 1945
A1838 851/12/23 Joint Intelligence Committee (London) - Weekly Review of Current Intelligence on the Middle East. 1956 - 1957
A5462 510/4/4 [US government] and OIR reports to Department of External Affairs 02 Aug 1956 - 20 Dec 1957
A12389 BB2 [portion of title exempt] Production October 1971 - April 1973 1971 - 1973
AWM54 179/5/6 PART 9 [Chemical Warfare - Trials:] Reports by 2/1 Australian Chemical Warfare Laboratory, RAE [Part 9 of 12] 1944 - 1944
A9954 SE/13/D32 ADDENDUM 1 Action taken by member governments on the recommendations of the committee - paper contributed by Thailand 07 Nov 1960 - 07 Nov 1960
A816 11/301/778 Meeting of Defence Ministers, London, June, 1951. Correspondence relating to Cabinet agenda 1951 - 1951
A7359 BOX 10/14 [Supplementary questions re British Security Service] [TITLE EXEMPT] 1944 - 1944
AWM54 179/5/14 PART 21 [Chemical Warfare - Trials:] Dugway Proving Grounds. Mobile Chemical Warfare Section Unit, 1945-1946 1945 - 1946
A3411 50 SEATO Council 1957 Canberra. Daily verbatim record. 1957 - 1957
A1838 TS694/2/3/4 PART 2 [Modified title: Exchange of information] 1968 - 1969
A1209 1961/891 Report of the SEATO [South East Asia Treaty organisation] communications - Electronics committee - Fifth meeting 1961 - 1961
AWM54 179/5/20 [Chemical Warfare - Trials:] 1) Revision of basic sampling and venting periods for Chemical Weapons; 2) A review of information derived from trials in the tropics up to May 1944; 3) Reports on trials held in Townsville, Canungra, Holdsworthy, to determine the effect of wearing respirators A/CAS light 1943 - 1944
A1838 TS163/11/52 PART 1 Egypt - Relations with the USSR [1 page] 1955 - 1955
A9954 SE/10/D3 Agenda item 3b. The inter-relations between Communist parties in the Treaty area and their role in furtherance of International Communist objectives. Collated paper presented by the United States 1959 - 1959
A5954 865/4 [Establishment of an Australian Secret Service] - Modified plan 5 September 1951 1951 - 1951
AWM54 179/5/10 PART 3 [Chemical Warfare - Trials:] Headquarters, San Jose, Project Division. Reports by technical staff, San Jose Project 1945-1946, Bi Weekly progress reports 1945, San Jose Project reports, Field Tests, 1944 [Part 3 of 13] 1944 - 1946
A2031 30/1959 South East Asian Trade Organization - Tenth Military Advisers Meeting - South East Asian Trade Organization Military Planning Office plan 5/59 1959 - 1959
A1838 748/2/4 PART 1 Vietnam - Industry and raw materials 1955 - 1971
AWM54 179/1/20 PART 9 [Chemical Warfare - General:] Allied Land Forces, South West Pacific Area: Technical Notes and Staff Notes - Chemical Warfare, Feb 1943 [Part 9 of 19] 1943 - 1943