Uranium
Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years. The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which has 143 neutrons). Uranium has the highest atomic …
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The National Archives · 1 January 1982 English
resource is iron ore. Fairly small deposits of uranium, gold, silver and antimony are also present. …
The National Archives · 1 January 1982 English
barite and graphite. An important and high-grade uranium deposit has also been reported in the south-west …
The National Archives · 1 January 1982 English
A file of correspondence and reports concerning the Soviet attitude towards the Falklands War. The documents cover discussions with Soviet officials on the crisis, outlining the British and Soviet positions; …
INCLUDING THE SUPPLY OF 100 KGS OF ENRICHED URANIUM FOR ARGENTINA'S RESEARCH REACTORS. 5. THE USSR …
The National Archives · 1 January 1982 English
and zinc, and there may be some development of uranium resources. However, even if the pace of industrialisation …
The National Archives · 1 January 1982 French
A file containing documents concerning the extension to West Berlin of international agreements by West Germany. Subjects covered in the file include a series of protests against such arrangements by …
ROUTINE BONN • ro > OUR TELEGRAM 288 ANGOLAi URANIUM 1. WEST GERMAN CHARGE HERE SAYS THAT HE HAS BEEN … NASCIMENTO TO URGE F I N A L I SAT ION OF THE URANIUM CONTRACT» BUT THAT ALL REQUESTS FOR AUDIENCES … NASCIMENTO'S OBSTRUCTIVE A T T l T U I > F T ( r T H E URANIUM CONTRACT MAY THEREFORE BE P O L I T I C A L …
The National Archives · 1 January 1982 English
the signing of the contract for enrichment of uranium of British origin in the Soviet Union in 1980-1989 …
The National Archives · 1 January 1982 English
resources, apart from coal, mainly brown, and uranium which goes to the Soviet Union for processin …
The National Archives · 1 January 1982 Russian
A file containing documents concerning Anglo-Soviet relations. Subjects covered in the file include inconsistency and confusion in Western policy towards the Soviet Union over several years; Soviet efforts to give …
INCLUDING THE SUPPLY OF 100 KGS OF ENRICHED URANIUM FOR ARGENTINA'S RESEARCH REACTORS. » 5. THE …
The National Archives · 1 January 1982 English
A file containing documents concerning a visit to Bulgaria and Romania by the Foreign Office minister Malcolm Rifkind in September–October 1982. Subjects covered in the file include the original planning …
and zinc, and there may be some development of uranium resources. However, even if the pace of industrialisation … and zinc, and there may be some development of uranium resources. However, even if the pace of industrialisation …
The National Archives · 1 January 1982 English
jurisdictional issues, including the Westinghouse/ RTZ uranium case. Coincidentally and happily his firm has transferred …
