HomeAntarctica Status Lists ...15. Recommendations adopted at the Tenth Consultative Meeting, done at Washington September 17-October 5, 1979. hide 15. Recommendations adopted at the Tenth Consultative Meeting, done at Washington September 17-October 5, 1979. Depositary – Treaty Affairs Office of Treaty Affairs Entered into force April 8, 1987 for X-2 thru X-8, November 6, 1989 for X-1 and X-9. Article IX, paragraph 4, of the Antarctic Treaty provides that recommended measures “shall become effective when approved by all the Contracting Parties whose representatives were entitled to participate in the meetings held to consider those measures.” Download status lists [128 KB] Tags Antarctic Multilateral Treaties