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After the outbreak of World War II, the demand for copper rose as it was used in ammunition and other military equipment. The US Mint researched ways to reduce or eliminate the usage of copper in cent production. The mint struck pattern coins in various metals, using the obverse design of the Colombian two centavo coin. [1]
1943 steel cents are U.S. one-cent coins that were struck in steel due to wartime shortages of copper. The Philadelphia , Denver , and San Francisco mints each produced these 1943 Lincoln cents . The unique composition of the coin ( low-grade steel coated with zinc , instead of the previously 95%-copper-based bronze composition) has led to ...
In North America, copper mining began with marginal workings by Native Americans. Native copper is known to have been extracted from sites on Isle Royale with primitive stone tools between 800 and 1600. [12] Copper metallurgy was flourishing in South America, particularly in Peru around 1000 AD; it proceeded at a much slower rate on other ...
The German Nazi Party looted and stole art, gold and other objects that had been either plundered or moved for safekeeping at various storage sites during World War II. These sites included salt mines at Altaussee and Merkers and a copper mine at Siegen .
The whaler on HMS Sheffield being manned with an armed boarding party to check a neutral vessel stopped at sea, 20 Oct 1941. The Blockade of Germany (1939–1945), also known as the Economic War, involved operations carried out during World War II by the British Empire and by France in order to restrict the supplies of minerals, fuel, metals, food and textiles needed by Nazi Germany – and ...
Military production during World War II was the production or mobilization of arms, ammunition, personnel and financing by the belligerents of the war, from the occupation of Austria in early 1938 to the surrender and occupation of Japan in late 1945.
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Copper is sometimes used in decorative art, both in its elemental metal form and in compounds as pigments. Copper compounds are used as bacteriostatic agents, fungicides, and wood preservatives. Copper is essential to all living organisms as a trace dietary mineral because it is a key constituent of the respiratory enzyme complex cytochrome c ...