When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Metallurgy in pre-Columbian America - Wikipedia

    en.wikipedia.org/wiki/Metallurgy_in_pre...

    South American metal working seems to have developed in the Andean region of modern Peru, Bolivia, Ecuador, Chile, and Argentina with gold and native copper being hammered and shaped into intricate objects, particularly ornaments. [1] [5] Recent finds date the earliest gold work to 2155–1936 BC. [1] and the earliest copper work to 1432–1132 BC.

  3. Metallurgy in pre-Columbian Mesoamerica - Wikipedia

    en.wikipedia.org/wiki/Metallurgy_in_pre...

    West Mexican smiths worked primarily in copper during the initial period, with some low-arsenic alloys, as well as occasional employment of silver and gold. Lost-wax cast bells were introduced from lower Central America and Colombia during this phase, along with several classes of cold-worked ornaments and hand tools, such as needles and tweezers.

  4. History of the United States dollar - Wikipedia

    en.wikipedia.org/wiki/History_of_the_United...

    Silver and gold coins are produced by the U.S. government, but only as non-circulating commemorative pieces or in sets for collectors. All circulating notes, issued from 1861 to present, will be honored by the government at face value as legal tender. This means that the federal government will accept old notes as payments for debts owed to the ...

  5. Cross of Gold speech - Wikipedia

    en.wikipedia.org/wiki/Cross_of_Gold_speech

    When silver prices rose relative to gold as a reaction to the California Gold Rush, silver coinage was worth more than face value, and rapidly flowed overseas for melting. Despite vocal opposition led by Tennessee Representative (and future president) Andrew Johnson , the precious metal content of smaller silver coins was reduced in 1853. [ 6 ]

  6. Global silver trade from the 16th to 19th centuries - Wikipedia

    en.wikipedia.org/wiki/Global_silver_trade_from...

    Potosí's deposits were rich and Spanish American silver mines were the world's cheapest sources of it. The Spanish acquired the silver, minting it into the peso de ocho to then use it as a means of purchase; that currency was so widespread that even the United States accepted it as valid until the Coinage Act of 1857. [5]

  7. Coinage Act of 1873 - Wikipedia

    en.wikipedia.org/wiki/Coinage_Act_of_1873

    The Coinage Act of 1873 or Mint Act of 1873 was a general revision of laws relating to the Mint of the United States.By ending the right of holders of silver bullion to have it coined into standard silver dollars, while allowing holders of gold to continue to have their bullion made into money, the act created a gold standard by default.

  8. Silver mining in the United States - Wikipedia

    en.wikipedia.org/wiki/Silver_mining_in_the...

    No silver is known to have been mined in New Mexico prior to the silver discovery in 1863 near Magdalena in Socorro County. The major silver-mining area of Silver City in Grant County was discovered in 1866. [25] A rancher found the Lake Valley silver deposits in Sierra County in 1876. The deposits are bedded manto-type deposits in Paleozoic ...

  9. Comstock Lode - Wikipedia

    en.wikipedia.org/wiki/Comstock_Lode

    The Comstock Lode is a lode of silver ore located under the eastern slope of Mount Davidson, a peak in the Virginia Range in Virginia City, Nevada (then western Utah Territory), which was the first major discovery of silver ore in the United States and named after American miner Henry Comstock.