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  2. Marble Cliff Quarry Co. - Wikipedia

    en.wikipedia.org/wiki/Marble_Cliff_Quarry_Co.

    In the early 1840s, quarry activities began in the area to mine a narrow belt of Columbus and Delaware limestone [2] which stretched all the way from the Scioto River to the Olentangy River adjacent to Marble Cliff, Ohio. [citation needed] The Columbus formation stone was roughly 100 feet thick with the Delaware limestone deposit above at 16 to ...

  3. Category:Mining in Ohio - Wikipedia

    en.wikipedia.org/wiki/Category:Mining_in_Ohio

    Pages in category "Mining in Ohio" The following 10 pages are in this category, out of 10 total. This list may not reflect recent changes. B. Big Muskie; C.

  4. Jeffrey Manufacturing Company - Wikipedia

    en.wikipedia.org/wiki/Jeffrey_Manufacturing_Company

    The plant had an internal railway more than 10 miles long, used to transfer material between departments. The company produced conveyor belts, power transmission systems, mining machinery and locomotives. [9] At the start of World War One, the company was the largest producer of mining locomotives and coal cutting machines in the world. [10]

  5. Ohio files $17M lawsuit against former mine company over ...

    www.aol.com/news/ohio-files-17m-lawsuit-against...

    (The Center Square) – Ohio Attorney General Dave Yost filed a $17 million lawsuit Tuesday against a northern Ohio company that dates back six decades. The lawsuit says the United States Gypsum ...

  6. Central Ohio Coal Company - Wikipedia

    en.wikipedia.org/wiki/Central_Ohio_Coal_Company

    At one time, they owned and operated Big Muskie in the Cumberland, Ohio area. [2] They were responsible for fueling the AEP Muskingum River Power Plant at Relief, Ohio. [3] From the 1960s to the late 1980s, the company employed nearly 1,000 people in southeastern Ohio, [4] producing up to 1.7 million tons of coal annually. [5]

  7. Energy in Ohio - Wikipedia

    en.wikipedia.org/wiki/Energy_in_Ohio

    Ohio was a world leader in oil production in the late 19th and early 20th centuries. The Ohio oil and natural gas industries employ 14,400 citizens, resulting in $730 million in wages. The industries paid $202 million in royalties to landowners, and $84 million in free energy. [7]

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