15. Recommendations adopted at the Tenth Consultative Meeting, done at Washington September 17-October 5, 1979.

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.”