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jeffrey mining machine

  • History of the Jeffrey Mining Corporate Center - State Library of Ohio

    A Short History of the Jeffrey Mining Corporate Center. 1876. The Lechner Mining Machine Co. was incorporated to build coal mining machinery. At that time, the...

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  • Jeffrey's Manufacturing History in Columbus - The Jeffrey Company

    For 111 years, from 1888 to 1999, Jeffrey mining machinery and .... By 1887, eleven years after the mining machine venture was started, the operation was.

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  • Jeffrey Manufacturing Company mine ventilation fan and employee ...

    Items 1 - 20 of 100 ... Jeffrey Colmol Mining Machine. See more detail Buy Now. Jeffrey Colmol ... Jeffrey Colmol Mining Machine. Jeffrey Heliminer Mining Machine.

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  • Shaping Columbus: Joseph A. Jeffrey, Columbus' coal-mining king ...

    Feb 24, 2012 ... Joseph A. Jeffrey was a deliberate and disciplined opportunist who was so enthralled with the model of a mining machine he saw in a city...

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  • The Jeffrey Company: Home

    In 1876 Joseph A. Jeffrey and others formed a partnership to build the world's first coal mining machines. That business eventually became The Jeffrey...

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  • Jeffrey

    In 1877, Joseph Jeffrey, an Ohio bank executive and founder of the Commercial National Bank, happened by chance to view a crude model of a machine...

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  • Jeffrey Chan @ drjkcc - Google Sites

    Jeffrey Chan. ... I am a researcher in data mining/machine learning/data science, with a particular interest in graphs and networks. I also have interests in the...

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  • Our History

    In 1876, banker Joseph Jeffrey, inventor Francis Lechner, and several others formed a partnership to develop a machine to mine underground coal. At that time...

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  • Jeffrey Mining Machinery Company

    Jeffrey Mining Machinery Company added 14 new photos from January 30, 2015 to the .... Mining Machine Co. was incorporated to build coal mining machinery.

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  • Jeffrey Mining Machinery Company

    Jeffrey Mining Machinery Company added 14 new photos from January 30, 2015 .... of patterns cut on the wall of a coal mine by a Colmol mining machine, 1950.

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