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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 ...
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 ...
Operation Copper was carried out by the Allied commando unit Z Special Unit, during World War II.The objective of the mission was to investigate the Japanese defences on Muschu Island, capture a Japanese officer for interrogation and discover the location of two naval guns on the island that covered the approaches to Wewak Harbour.
The origin of the cooperation stemmed from a 1940 visit by the Aeronautical Research Committee chairman Henry Tizard, during which Tizard arranged to transfer UK military technology to the US in the event that Hitler's planned invasion of the UK should succeed.
Timeline of the United Kingdom home front during World War II (1939–1945) Timeline of the Molotov–Ribbentrop Pact (1918–1941) Timeline of Sweden during World War II (1939–1945) Timeline of the Netherlands during World War II (1939–1945) Chronology of the liberation of Dutch cities and towns during World War II
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The history of Arizona during World War II begins in 1940, when the United States government began constructing military bases within the state in preparation for war. Arizona 's contribution to the Allied war effort was significant both in terms of manpower and facilities supported in the state.