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Mineral Resources United States: "A Ten Talent Nation" ~ 1923 American Motion Picture Corporation
🕑 Added 2020-10-24 23:54:25 +0000 UTCmore at http://quickfound.net/
Silent, with title cards.
Originally a public domain film from the National Archives or Library of Congress Prelinger Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
https://en.wikipedia.org/wiki/Mining_in_the_United_States
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/
Mining in the United States has been active since the beginning of colonial times, but became a major industry in the 19th century with a number of new mineral discoveries causing a series of mining rushes. In 2015, the value of coal, metals, and industrial minerals mined in the United States was US $109.6 billion. 158,000 workers were directly employed by the mining industry.
The mining industry has a number of impacts on communities, individuals and the environment. Mine safety incidents have been important parts of American occupational safety and health history. Mining has a number of environmental impacts. In the United States, issues like mountaintop removal, and acid mine drainage have widespread impacts on all parts of the environment. As of January 2020. the EPA lists 142 mines in the Superfund program...
https://en.wikipedia.org/wiki/Gold_mining_in_the_United_States
Gold mining in the United States has taken place continually since the discovery of gold at the Reed farm in North Carolina in 1799. The first documented occurrence of gold was in Virginia in 1782. Some minor gold production took place in North Carolina as early as 1793, but created no excitement. The discovery on the Reed farm in 1799 which was identified as gold in 1802 and subsequently mined marked the first commercial production.
The large scale production of gold started with the California Gold Rush in 1848.
The closure of gold mines during World War II by the War Production Board Limitation Order No. 208 in autumn 1942 was a major impact on the production until the end of the war.
US gold production greatly increased during the 1980s, due to high gold prices and the use of heap leaching to recover gold from disseminated low-grade deposits in Nevada and other states.
In 2019 the United States produced 200 tonnes (6.4 million troy ounces) of gold (down from 210 tonnes in 2018) from 12 states, worth about US$8.9 billion, and 6.1% of world production, making it the fourth-largest gold-producing nation, behind China, Australia and Russia. Most gold produced today in the US comes from large open-pit heap leach mines in the state of Nevada. The US is a net exporter of gold...
https://en.wikipedia.org/wiki/Silver_mining_in_the_United_States
Silver mining in the United States began on a major scale with the discovery of the Comstock Lode in Nevada in 1858. The industry suffered greatly from the demonetization of silver in 1873 by the Coinage Act of 1873, known pejoratively as the "Crime of 73", but silver mining continues today.
United States mines produced 1,170 tons of silver in 2014, 17% of the silver it used. 63% of consumption was imported, from Mexico, Canada, Peru and Chile, and the remainder was derived from recycling. Three US mines had silver as their primary product, and 39 mines reported silver as a byproduct of gold and base metals production. Alaska was the country's leading silver-producing State, followed by Nevada and Idaho.
Interest in silver mining increased in recent years because of an increased price for the metal: the average silver price increased from $4.39 per troy ounce for the year 2001, to $13.45 per troy ounce for 2007. In 2011, silver prices rose to almost $49 per troy ounce in April before dropping to around $34 per troy ounce in late June. In March 2016, the silver price was around $15 per troy ounce...
https://en.wikipedia.org/wiki/Iron_mining_in_the_United_States
https://en.wikipedia.org/wiki/Copper_mining_in_the_United_States
https://en.wikipedia.org/wiki/Coal_mining_in_the_United_States
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