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  2. Drilling and blasting - Wikipedia

    en.wikipedia.org/wiki/Drilling_and_blasting

    The decision whether to construct a tunnel using a TBM or using a drill and blast method includes a number of factors. Tunnel length is a key issue that needs to be addressed because large TBMs for a rock tunnel have a high capital cost, but because they are usually quicker than a drill and blast tunnel the price per metre of tunnel is lower. [ 2 ]

  3. Ebbw Vale Steelworks - Wikipedia

    en.wikipedia.org/wiki/Ebbw_Vale_Steelworks

    The partnership erected a blast furnace and casting shop against the hillside, which created a weekly output of 25 tons of pig iron per week. Called "Pen y cae" after the farming hamlet by the locals, the partners adopted the river's name to form the Ebbw Vale Furnace Company Ltd (EVC), hence naming both the works and the developing township.

  4. Direct reduction - Wikipedia

    en.wikipedia.org/wiki/Direct_reduction

    The coking plant that feeds a battery of blast furnaces is just as expensive as the blast furnace and requires a specific quality of coal. [ 63 ] [ 64 ] Conversely, many direct-reduction processes are disadvantaged by the costly transformation of ore into pellets: these cost on average 70% more than raw ore. [ 65 ]

  5. History of the iron and steel industry in the United States

    en.wikipedia.org/wiki/History_of_the_iron_and...

    Cleveland's first blast furnace was built in 1859. In 1860, the steel mill employed 374 workers. By 1880, Cleveland was a major steel producer, with ten steel mills and 3,000 steelworkers. [10] The city of Gary, Indiana was founded in 1906 by United States Steel Corporation to serve the Gary Works.

  6. Blast from the past: Researchers discover oldest US gun ...

    www.aol.com/blast-past-researchers-discover...

    Researchers in Arizona say they have discovered the oldest gun in the U.S., a cannon used during the first European expedition across the Southwest.

  7. Inventory - Wikipedia

    en.wikipedia.org/wiki/Inventory

    The concept of inventory, stock or work in process (or work in progress) has been extended from manufacturing systems to service businesses [1] [2] [3] and projects, [4] by generalizing the definition to be "all work within the process of production—all work that is or has occurred prior to the completion of production". In the context of a ...

  8. Blast from the past: Fragment of Revolution-era cannon ...

    www.aol.com/blast-past-fragment-revolution-era...

    When construction on a house near the site began in the 1950s, “they found a lot of artifacts from the iron furnace,” Stout said, “including a cannon fragment.

  9. AOL Mail for Verizon Customers - AOL Help

    help.aol.com/products/aol-mail-verizon

    AOL Mail welcomes Verizon customers to our safe and delightful email experience!