33(1)(a)

contains information or matter the disclosure of which under this Act could reasonably be expected to cause damage to the security, defence or international relations of the Commonwealth
Section 33(1)(a) of the Archives Act 1983

1010

closed files

cite this as a reason you're not allowed to see them
60

years

is the average age of closed files that cite this reason, based on the date of their earliest content
108

series

contain closed files that cite this reason
18

years

is the average age of decisions to closed files citing this reason

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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 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
A1838 748/2/4 PART 1 Vietnam - Industry and raw materials 1955 - 1971
A1838 1495/3/2/3 PART 1 Antarctic - Heard Island 1933 - 1949
A6122 1356 CPA [Communist Party of Australia] - Interest in and use of the media - Volume 1 1959 - 1968
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
A5954 865/4 [Establishment of an Australian Secret Service] - Modified plan 5 September 1951 1951 - 1951
A1209 1961/891 Report of the SEATO [South East Asia Treaty organisation] communications - Electronics committee - Fifth meeting 1961 - 1961
A6119 439 HEISER, Ronald Oswald 1949 - 1959
A12389 A21 ASIO Commonwealth Security Conferences 1975 - 1975
A6122 548 CP of A [Communist Party of Australia - State Committee Tasmania - Volume 2 1949 - 1949
A7452 A127 PART 1 Royal Commission into Intelligence and Security [RCIS] - third report 1976 - 1976
A816 11/301/778 Meeting of Defence Ministers, London, June, 1951. Correspondence relating to Cabinet agenda 1951 - 1951
D174 H5410/4/5 Project Ikara - Guidance System E C M 1959 - 1964
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
A6122 1319 United Nations Association, Western Australia 1949 - 1962
A7452 A124 PART 1 Inquiry into intelligence and security organisations [RCIS] - terms of reference and appointment of Royal Commissioner 1973 - 1974
A1838 851/12/23 Joint Intelligence Committee (London) - Weekly Review of Current Intelligence on the Middle East. 1956 - 1957
A6122 869 CPA [Communist Party of Australia] - (Western Australia) - Kalamunda branch 1949 - 1956
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
A6119 463 JOHNSTON, Elliott Frank - Part 1 1940 - 1953