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
A5954 1599/8 Higher Defence Organisation Constitution and Terms of Reference of Chemical Defence Board ... Chemical and Biological Warfare Subcommittee ... New Weapons and Equipment Committee ... Chemical Defence Board 1945 - 1948
A1838 3081/9/12 Papua New Guinea - Defence arrangements with Australia, ANZUK [Australia, New Zealand and United Kingdom] and SEATO [South East Asia Treaty Organisation] 1975 - 1986
A6122 1099 Communist Party of Australia - Illegal organisation (photos) 1949 - 1956
A6119 173 Claudio ALCORSO 1949 - 1954
A1838 TS666/57/5 Probability of Indonesia becoming Communist and threat therefrom [74 pp] 1956 - 1957
A1209 1961/97 SEATO Tank investigation team - report on the best class of tank for use in Thailand. 1961 - 1961
A1945 83/1/12 The likelihood of global war up to mid 1963 [10 pages] 1958 - 1958
A5954 1414/6 Minister of Defence - Republic of Indonesia. 1955 - 1955
A6122 1036 Communist Party of Australia. Western Australia. Social Activities 1949 - 1958
A1838 3107/38/2 PART 2 China - Relations with Australia - Chinese Representation in Australia 1973 - 1975
A1209 1959/916 SEATO - Logistics Committee meeting Bangkok - August 1959. Report 1959 - 1959
AWM54 179/5/7 PART 8 [Chemical Warfare - Trials:] Reports from Australian Field Experimental Station, Proserpine, Queensland (Sep 1945) [Part 8 of 10] 1945 - 1945
A1838 563/10/8 Communism - SEATO Council representations 1956 - 1957
A1945 249/3/9 SEATO - Records of meetings of council representatives [2cms] 1961 - 1961
A12933 136 Cabinet Paper No 136 : [title exempt] - File No LC1106 23 Aug 1977 - 23 Aug 1977
A6122 567 CPA Victoria - Disputes Committee 1954 - 1955
A2031 14/1968 Release of intelligence [portion of title withheld] 15 Feb 1968 - 15 Feb 1968
A7452 A164 East Timor - reported deployment of Sabre aircraft and Nomad aircraft 1977 - 1977
A6122 1031 Communist Party of Australia - campaigns to increase membership and gain public support 1949 - 1956
A432 1968/2197 Shooting of Yugoslav in Act - press reports of Ustashi activity 1968 - 1968