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  2. Iron mining in the United States - Wikipedia

    en.wikipedia.org/wiki/Iron_mining_in_the_United...

    Learn about the history, geology, and production of iron ore in the US, from colonial times to the present. Find out where and how iron ore is mined, processed, and exported in Minnesota, Michigan, and Utah.

  3. Direct reduced iron - Wikipedia

    en.wikipedia.org/wiki/Direct_reduced_iron

    Direct reduced iron (DRI) is iron produced from the direct reduction of iron ore by a reducing gas. Hot-briquetted iron (HBI) is a compacted form of DRI for easy transport and storage. Learn more about the history, chemistry, economy and food applications of DRI.

  4. Iron and steel industry in the United States - Wikipedia

    en.wikipedia.org/wiki/Iron_and_steel_industry_in...

    Learn about the history, types, and production of iron and steel in the US, the world's third-largest producer of raw steel. Find out the names, locations, and status of the remaining integrated and specialty steel mills in the country.

  5. Steelmaking - Wikipedia

    en.wikipedia.org/wiki/Steelmaking

    Steelmaking is the process of producing steel from iron ore and/or scrap, with different methods and alloying elements. Learn about the history, chemistry, and environmental impact of steelmaking, as well as the different processes such as basic oxygen, electric arc, and HIsarna.

  6. File (tool) - Wikipedia

    en.wikipedia.org/wiki/File_(tool)

    A file is a tool used to remove fine amounts of material from a workpiece, with one or more surfaces cut with sharp teeth. Learn about the different types of files, such as flat files, and their history from prehistoric times to the Industrial Revolution.

  7. Dannemora mine - Wikipedia

    en.wikipedia.org/wiki/Dannemora_mine

    Joachim Piper renewed the mining privileges at Dannemora in 1532 and devoted substantial resources to the mine, mainly producing iron but also other minerals. the ownership structure changed in 1545, and a dozen wealthy individuals entered as the owners, so that a number of Germans and even King Gustav Vasa took part.

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