Copper
Copper is a chemical element with the symbol Cu (from Latin: cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement. Copper is one of the few metals that can occur …
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The National Archives · 1 January 1982 English
e , and there is also important production of copper, lead and zinc (excluding the Soviet U n i o n … n , Bulgaria is Europe's ^ h i r d largest copper producer, after P o l a n d and Yugoslavia). 4 . …
The National Archives · 1 January 1982 English
have to increase their imports from the West of copper, lead, zinc, cobalt, titanium and bauxite. The … prepared in 1978 Afghanistan I possesses deposits of copper, iron ore, chrome, gold, mercury, beryl, emeralds … Soviet-aided project in Afghanistan is the $.600 million copper mining and smelting complex at Ainak, south of … planned annual capacity of 140,000 tons of pure copper. By world standards the Ainak deposits are large … ore containing an estimated 4.7 million tons of copper. The Russians plan also to exploit the iron ore …
The National Archives · 1 January 1982 English
materials. Romania is self-sufficient for 60fo of its copper and of its bauxite needs. There is some low-grade …
The National Archives · 1 January 1982 English
I d . T h e TONOLLI TUBI METALLICI COPPER/BRASS/BRONZE/COPPER NICKEL TUBES Ive the [ r n k e y for: …
The National Archives · 1 January 1982 English
of co-operation: the development of the Udokan copper deposits; the construction in the USSR of a plant …
The National Archives · 1 January 1982 English
tenia, coking coal in the Jiu Valley, and iron and copper ores were brought into production. In the electric …
The National Archives · 1 January 1982 English
A file containing documents concerning a visit to Bulgaria and Romania by the Foreign Office minister Malcolm Rifkind in September–October 1982. Subjects covered in the file include the original planning …
materials. It is self-sufficient for 60% of its copper and 50% of its bauxi needs. There is some low-grade … materials. It is self-sufficient for 60% of its copper and 50$ of its bauxi I needs. There is some low-grade …
The National Archives · 1 January 1982 English
Production and deliveries for export of coal, copper, sulphur and other items had all increased. I took …
The National Archives · 1 January 1982 French
A file of correspondence and reports concerning the economic situation in Yugoslavia. The documents cover discussions with Yugoslav officials on the country's current economic situation; the pessimistic views of British …
tons. * k) In the non-ferrous metallurgy sector copper ore production fell by 5 % , probably due to a … switch to deeper mining. However, electrolitic copper production improved modestly to 123,873 tons. …
The National Archives · 1 January 1982 English
A file containing documents relating to the Soviet economy. Subjects covered in the file include the problems caused by a shortage of mineral fertilisers; Soviet economic growth at its lowest …
There is to be a rise in the output of aluminium, copper, I o T l r a T ° t h e r n° n- f e r r 0 U S …
