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
20

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
A6980 S250758 Black September - terrorist activity - Part 2 1973 - 1973
A6122 1023 Communist Party of Australia - Victoria, Schools 1949 - 1956
A1838 100/4/13 Named country [imposed title, original title wholly exempt] 1956 - 1979
A6122 563 CPA [Communist Party of Australia] - Committees NSW [New South Wales] - School Committee 1949 - 1949
A6122 737 Communist Party of Australia - Queensland - Sergeants Branch 1949 - 1949
A10872 100/1/1 PART 1 Australian Service : Charter and Functions, Part 1 [Australian Secret Intelligence Service, ASIS] 1952 - 1957
A1838 1212/5 Correspondence - cables. Overseas telecommunication channels. Cable and radio links. International and national communication bodies. 1938 - 1960
A816 14/301/412 Planning for co-operation in British Commonwealth defence (from conclusions of Council of Defence 1950) 1950 - 1951
MP1155/1 V1962/30229 Paas, May 1961 - 1962
A6119 343 Ian Frank George MILNER volume 3 1944 - 1957
A12385 AI/1 Boyle Mr Michael Dorrington Correspondence 1972 - 1975
A6122 700 C P of A [Communist Party of Australia] Queensland - Wilston/Grange Branch 1949 - 1949
AWM54 244/2/26 PART 9 [Demolitions - Schemes:] Operation Demolition Plan: Volunteer Defence Corps - Sketches and maps for demolition plans, Queensland and Victoria [Part 9 of 15] [Oversize item] 1939 - 1945
A4311 686/13 [Research Methods Conference, Melbourne, November 1958]. Cold War Problems - Economic Penetration by [portion of title exempted], 25th September 1958 1958 - 1958
SP1714/1 N61439 Danish and other suspects 1942 - 1945
A6119 96 Ric Prichard THROSSELL Volume 2. 1954 - 1954
J27 MB11700 NEWMAN, William George - service number 3865; war widow Lucretia; [file only contains information on Lucretia NEWMAN] - [Box 139] 1976 - 1983
AWM54 179/1/20 PART 10 [Chemical Warfare - General:] Allied Land Forces, South West Pacific Area: Technical Notes and Staff Notes - Chemical Warfare, Mar 1943 [Part 10 of 19] 1943 - 1943
A7936 B/2/2A File amendments [portion of title exempt] 1977 - 1979
A6122 755 Communist Party of Australia. Branches NSW, East Mascot Branch 1949 - 1949