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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 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]
The Copper Kings were industrialists Marcus Daly, William A. Clark, James Andrew Murray and F. Augustus Heinze. They were known for the epic battles fought in Butte, Montana , and the surrounding region, during the Gilded Age , over control of the local copper mining industry, the fight that had ramifications for not only Montana, but the ...
The German Nazi Party stored art, gold and other objects that had been either plundered or moved for safekeeping during World War II at various storage sites. These sites included salt mines at Altaussee and Merkers and a copper mine at Siegen.
During World War II unemployment by 1945 had fallen to 1.9% from 14.6% in 1940. 20% of the population during the war was employed within the armed forces. [ 36 ] The beginning years of World War II shows a spike in employment, but towards the end of the war decreased significantly.
Swedish iron ore was an important economic and military factor in the European theatre of World War II, as Sweden was the main contributor of iron ore to Nazi Germany.The average percentages by source of Nazi Germany’s iron ore procurement through 1933–43 by source were: Sweden: 43.0 Domestic production (Germany): 28.2 France: 12.9. [1]
Botallack was a submarine mine with tunnels extending under the sea, in places for half a mile. Over its recorded lifetime the mine produced around 14,500 tonnes of tin, 20,000 tonnes of copper, and 1,500 tonnes of arsenic.