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
A6126 662 BALZI, Gildo 01 Jan 1800 - 01 Jan 1800
A1838 3027/2/1 PART 39 Malaysia - Political - General 1969 - 1969
A1838 3107/3/1/4 China - Communist Party - Evolution of Central Organisations of Chinese Communist Party 1921-58 1961 - 1961
AWM54 179/5/10 PART 10 [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 10 of 13] 1944 - 1946
A6122 566 CPA Qld Women's Sub-Committee 1954 - 1955
A6126 1026 Kay, Helen 1956 - 1956
A5799 208/1953 Antarctica 1953 - 1953
A5799 276/1952 JIB - [portion of title exempt] 1952 - 1952
A1838 3127/2/1/8 PART 2 ROK [South Korea] Political - General - Intelligence reports 1980 - 1980
AWM54 179/5/1 PART 5 [Chemical Warfare - Trials:] Reports from the Chemical Defence Board, Research and Experimental Section, Innisfail, Queensland [Part 5 of 10] 1944 - 1944
A6122 553 CPA [Communist Party of Australia] NSW [New South Wales] Student Committee 1949 - 1949
AWM54 179/5/17 PART 4 [Chemical Warfare - Trials:] Far Eastern Technical Unit, Research Section, Pacific Warfare Board - Reports No 4, 5 and 6 1945 - 1945
A1838 563/10/3 PART 5 Communism - SEATO - Information Committee 1956 - 1956
A3092 221/10/1/6 [Title exempt] 18 Jul 1958 - 26 Aug 1958
A6122 972 Communist Party of Australia. Western Australia, Carlisle Branch 1949 - 1958
B3476 163K New Guinea - Milne Bay: Wireless Telegraph Codes 1943 - 1945
A10872 100/1/8 Australian service in wartime [Australian Secret Intelligence Service, ASIS] 1952 - 1981
A6119 277 CHRISTESEN, Clement Byrne Part 3 1955 - 1956
AWM193 32 PART 1 [Eastern Command "G" Branch records:] Anti sabotage: vulnerable points, 22/8/39 - 1/9/39 Part 1 1939 - 1939
K279 1980/671 PART 1 Defence (Army) Swanbourne and Springhill - training facilities for SASR [Special Air Service Regiment] [Department of Works/Construction] 1980 - 1982