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  2. List of bullion dealers - Wikipedia

    en.wikipedia.org/wiki/List_of_bullion_dealers

    This list of bullion dealers includes notable companies and organizations that deal in precious metals, such as gold and silver. This list is incomplete ; you can help by adding missing items . ( September 2014 )

  3. Elemetal - Wikipedia

    en.wikipedia.org/wiki/Elemetal

    Walter Luhrman founded a precious metals refinery in Jackson, Ohio under the name Jackson Precious Metals in 1974. It would run into financial difficulties in the 1990s and he would sell it to Alan Stockmeister, a Jackson native who own owned many local area businesses, including the local newspaper.

  4. Valcambi - Wikipedia

    en.wikipedia.org/wiki/Valcambi

    An example of a Valcambi minted gold bar. Valcambi is a precious metals refining company located in Balerna, Switzerland, and a subsidiary of Rajesh Exports Limited.Valcambi is owned by European Gold Refineries, which is owned by Global Gold Refineries AG, which in turn is 95% owned by REL Singapore PTE Ltd. and 5% by Rajesh Exports Limited India.

  5. Engelhard - Wikipedia

    en.wikipedia.org/wiki/Engelhard

    In 1904, he purchased Baker & Co., a platinum smelting and refining business located in Newark and in 1905, he established Hanovia Chemical and Manufacturing Company also in Newark. Engelhard became the world's largest refiner and fabricator of platinum, gold and silver, a producer of silver and silver alloys in mill forms, operator of the ...

  6. Gold mining - Wikipedia

    en.wikipedia.org/wiki/Gold_mining

    Cyanide leaching "heap" at a gold mining operation near Elko, Nevada. On top of the large mounds of ore, are sprinklers dispensing a solution of cyanide. The dominant method for refining gold is a cyanide extraction method, or gold cyanidation, introduced in the late 1800s. This a metallurgical technique used to extract gold from lower grade ...

  7. Refining (metallurgy) - Wikipedia

    en.wikipedia.org/wiki/Refining_(metallurgy)

    In metallurgy, refining consists of purifying an impure metal. It is to be distinguished from other processes such as smelting and calcining in that those two involve a chemical change to the raw material, whereas in refining the final material is chemically identical to the raw material. Refining thus increases the purity of the raw material ...

  8. Garfield Refining - Wikipedia

    en.wikipedia.org/wiki/Garfield_Refining

    Garfield Refining is a Philadelphia, Pennsylvania based refinery specializing in the purchase of precious metal, including gold, silver, platinum and palladium. The company was founded in 1892 and was originally called Eastern Smelting. [ 1 ]

  9. ASARCO - Wikipedia

    en.wikipedia.org/wiki/Asarco

    Refining at the mines as well as at a copper refinery in Amarillo, Texas, produce 375,000,000 pounds (170,000,000 kg) of refined copper each year. ASARCO's hourly workers are primarily represented by the United Steelworkers. ASARCO has 20 superfund sites across the United States, and it is subject to considerable litigation over pollution.

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