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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 ...
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]
The conservation and restoration of copper and copper-alloy objects is the preservation and protection of objects of historical and personal value made from copper or copper alloy. When applied to items of cultural heritage , this activity is generally undertaken by a conservator-restorer .
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 .
In 1973, the copper and gold minerals from the area had been exhausted and subsequently the activity and company were shut down. [ 3 ] During World War II between 1942 and 1945, the Japanese Empire sent approximately one thousand prisoners of war (POWs) to the gold mines surrounding the smelting plant.
Fukuoka #17 - Omuta, Branch Prisoner of War Camp was a Japanese prisoner-of-war camp located at the Mitsui Kozan Miike Kogyo-Sho coal mine and Mitsui Zinc Foundry in Shinminato-machi, Omuta-shi, Fukuoka-ken, Japan, during World War II. It was the largest POW camp in Japan.
Copper deposits in Wisconsin and Upper Peninsula of Michigan in the Mid-continental Rift System. Copper was discovered one mile northeast of Mineral Point in Iowa County of southwest Wisconsin in 1837 or 1838. The deposit was mined until 1842, then intermittently through 1875, producing an estimated 680 tonnes of copper. [72]
World War II [b] or the Second World War (1 September 1939 – 2 September 1945) was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all the world's countries—including all the great powers—participated, with many investing all available economic, industrial, and scientific capabilities in pursuit of total war, blurring the distinction between military and ...