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  2. Engelhard - Wikipedia

    en.wikipedia.org/wiki/Engelhard

    An Engelhard silver bar An Engelhard poured 2 oz 99.99% pure gold bar. Engelhard Corporation was an American Fortune 500 company headquartered in Iselin, New Jersey, United States. It is credited with developing the first production catalytic converter. In 2006, the German chemical manufacturer BASF bought Engelhard for US$5 billion.

  3. List of mints - Wikipedia

    en.wikipedia.org/wiki/List_of_mints

    Asahi Refining Private [27] United States: Golden State Mint 1974 Private [28] United States: Mason Mint 2015 Private [29] United States: Monarch Precious Metals 2008 Private [30] United States: The Ohio Mint 2021 Private [31] United States: Regency Mint 1999 Private [32] United States: Scottsdale Mint 2008 Private [33] United States: Sunshine ...

  4. Bullion - Wikipedia

    en.wikipedia.org/wiki/Bullion

    The London bullion market is an over-the-counter market for wholesale trading of gold and silver. The London Bullion Market Association (LBMA) coordinates activities of its members and other participants in the London bullion market. The LBMA sets and promotes quality standards for gold and silver bullion bars.

  5. File:100 Troy oz. Silver Bullion Bar from Johnson Matthey.jpg

    en.wikipedia.org/wiki/File:100_Troy_oz._Silver...

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  6. Precious metal - Wikipedia

    en.wikipedia.org/wiki/Precious_metal

    1,000 oz silver bar. A metal is deemed to be precious if it is rare. The discovery of new sources of ore or improvements in mining or refining processes may cause the value of a precious metal to diminish. The status of a "precious" metal can also be determined by high demand or market value.

  7. Patio process - Wikipedia

    en.wikipedia.org/wiki/Patio_process

    The introduction of amalgamation to silver refining in the Americas not only ended the mid-sixteenth century crisis in silver production, it also inaugurated a rapid expansion of silver production in New Spain and Peru as miners could now profitably mine lower-grade ores.

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