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
A6119 1421 HEALY, Michael aka McCRACKEN, Francis, Volume 3 [6 pages - all of these contain exemptions] 1963 - 1963
AWM54 179/5/7 PART 7 [Chemical Warfare - Trials:] Reports from Australian Field Experimental Station, Proserpine, Queensland (Aug 1945) [Part 7 of 10] 1945 - 1945
A1838 100/6/1 Relations with foreign services [imposed title, original title wholly exempt] 1954 - 1957
A1209 1961/1244 SEATO - Military Advisers 15th Conference - Report. 1961 - 1961
E1568 17 Northern Territory Force - Operational Plan No. 1/66 1942 - 1976
A5954 2365/2 Meeting of [a UK officer] with Defence Committee 8 April 1954 1954 - 1954
A6122 516 CP of A [Communist Party of Australia] General Motors Holdens Fishermen's Bend Branch - Victoria 1954 - 1955
A10872 100/1/4 Staff questions arising from change in method of working [Australian Secret Intelligence Service, ASIS] 1957 - 1980
A1209 1960/725 Title exempt 1960 - 1960
AWM54 179/5/14 PART 10 [Chemical Warfare - Trials:] Dugway Proving Grounds. Mobile Chemical Warfare Section Unit, 1945-1946 1945 - 1946
A1838 694/2/3/4 PART 9 [Modified title: Exchange of information] 1973 - 1974
A1838 699/1/4 Australian, New Zealand and United States talks (1963) on security situation in South West Pacific 1963 - 1963
A1838 TS3006/10/4 PART 3A South East Asia intra regional relations - Malaysia/Singapore [3 pages] 1966 - 1969
A4940 C1952 Antarctic policy 1958-1960 1958 - 1960
A6122 860 Communist Party of Australia - Western Australia, Swan branch. 1949 - 1956
A1838 100/6/1/5 Relations with foreign services [imposed title, original title wholly exempt] 1956 - 1974
A6122 845 Communist Party of Australia - South Australia. Edwardstown 1949 - 1957
A12391 R19 Czechoslovak Intelligence: Czechoslovak Ministry of Interior: Foreign Counterintelligence 1972 - 1972
A6122 971 Communist Party of Australia. South Australia. Gas Company 1949 - 1958
A6119 804 OLLIER, Rose Marie Volume 5 1953 - 1958