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
19

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
A1838 TS690/4/5 PART 6 JIC London reports 1969 - 1975
AWM54 179/5/7 PART 4 [Chemical Warfare - Trials:] Reports from Australian Field Experimental Station, Proserpine, Queensland (May 1945) [part 4 of 10] 1945 - 1945
A1838 3107/20/1 PART 1 China - Secondary Industries - Power & Oil 1949 - 1973
A2031 268/1945 268/1945 : Destruction of Japanese crops in South West Pacific area 1945 - 1945
A1533 1957/2081 Counterfeit US currency passed in Curacao 1957 - 1968
AWM54 179/5/8 PART 6 [Chemical Warfare - Trials:] Munitions Supply Laboratories. Abstract reports indexed in records of Chemical Defence Board [Part 6 of 23] 1944 - 1944
A12391 R18 The Satellite Intelligence and Security Services, June 1974 1974 - 1974
A6122 500 Communist Party of Australia - Branches Victoria AbbotsfordBrewery Branch 1949 - 1949
AWM54 179/5/8 PART 16 [Chemical Warfare - Trials:] Munitions Supply Laboratories. Abstract reports indexed in records of Chemical Defence Board [Part 16 of 23] 1945 - 1945
A3411 48 South-East Asia Treaty Organisation. Second Meeting of the Council of Ministers held at Karachi (from 6-8 March 1956) 1956 - 1956
A1838 3020/11/87/1 PART 1 North Vietnam - Chinese Communist aid to North Vietnam 1951 - 1974
AWM54 179/5/14 PART 11 [Chemical Warfare - Trials:] Dugway Proving Grounds. Mobile Chemical Warfare Section Unit, 1945-1946 1945 - 1946
A7452 A391 PART 1 Hope Commission inquiry [RCSIA] into Sheraton Hotel incident 1983 - 1986
A1838 1495/1/9/4 PART 4 Antarctic - International Geophysical Year - Russian Participation 1956 - 1956
A1209 1961/1375 SEATO - Intelligence Committee report of the meeting 1961 - 1962
AWM54 179/1/15 [Chemical Warfare - General:] Headquarters Army Service Forces, Office of the Chief of Chemical Warfare, Washington 25 DC - Chemical Warfare Intelligence Bulletins, Nos 39-56, Aug 1944 - Jun 1945 1944 - 1945
A7936 B/5/10 Estimates 1957-1958 1957 - 1957
A1838 917/2 United Nations Anglo-Argentine dispute Falkland Islands 1964 - 1970
A12389 BB7 The [portion of title exempt] Case - January 1975 1966 - 1975
A816 14/301/530 The Defence Department's Programme 1952-53 1952 - 1953