Antarctica and ice shelves south of 60° S for the purposes of the Treaty System. The treaty was signed by twelve countries including the Soviet Union (and later Russia), the United Kingdom, Argentina, Chile, Australia, and the United States. It set aside Antarctica as a scientific preserve, established freedom of scientific investigation and environmental protection, and banned military activity on Antarctica. This was the first arms control agreement established during the Cold War. In 1983 the Antarctic Treaty Parties began negotiations on a convention to regulate mining in Antarctica. A coalition of international organisations launched a public pressure campaign to prevent
Trondheim Airport, Jonsvatnet Trondheim Airport, Jonsvatnet Trondheim Airport, Jonsvatnet () was a water aerodrome located at Valset on the lake of Jonsvatnet in Trondheim, Norway. The airport was built as the first permanent airport serving Trondheim and initially was used for Norwegian Air Lines' (DNL) routes which commenced in 1935. Ahead of the 1936 season the airport was equipped with permanent installations, including wharfs and a small terminal building. In 1937 the airport was used by Widerøe, before DNL returned the following year. During World War II the airport was taken over by the Luftwaffe, which used the ice on the lake as