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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.
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 ...
For the first few years, [2] [9] [10] they were gold-plated bronze, then later (perhaps starting in the 1930s, [11] [12] [13] 1945, [14] or 1982/1983; [15] [16] [17] different sources disagree), they were made of britannia metal plated with copper then nickel silver then gold, except for three years during WWII, from 1942 to 1945, during which ...
Arizona's Camp Florence, on the Florence Military Reservation, was the first permanent alien enemy camp constructed during World War II. Construction began during 1942 to house 3000 internees, with room to expand to 6000. The initial construction budget was $4.8 million.
In antiquity, copper's durability and resistance to rust or corrosion proved valuable. Copper's relationship with man is thought to date back over six thousand years. [1] Coppersmith is one of the few trades that have a mention in the Bible. [2] Copper was particularly worked in England, with ores smelted in Wales as early as the 1500s.
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Sulitjelma Mines (Norwegian: Sulitjelma gruber) was a Norwegian mining company that extracted copper, pyrite, and zinc at Sulitjelma in Fauske Municipality in Nordland county, Norway. Operations started with a test mine in 1887. From 1891 to 1933, the business was registered as a Swedish company called Sulitelma Aktiebolags Gruber.