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  2. Anthracite - Wikipedia

    en.wikipedia.org/wiki/Anthracite

    An American football trophy custom-made from anthracite. Anthracite generally costs two to six times as much as regular coal. In June 2008, the wholesale cost of anthracite was US$150/short ton, [25] falling to $107/ton in 2021; it makes up 1% of U.S. coal production. [26]

  3. Geology of Ohio - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Ohio

    A limestone quarry on Kelley's Island, Ohio. Ohio has varied natural resources. In 2016, 64.92 million tons of limestone and dolomite valued at $615 million was quarried, along with 12.23 million tons of coal, worth $541 million. Sand and gravel, salt, sandstone and conglomerate all have production over one million tons.

  4. List of quarries in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_quarries_in_the...

    Zimmerman Kame, NRHP-listed glacial kame and archaeological site in McDonald Township, Hardin County, Ohio, was a commercial gravel pit ending in the 1970s; Dravo Gravel Site, an archeological site with artifacts from the Archaic period above the Great Miami River in Miami Township, Hamilton County, Ohio, located in what is now a gravel pit

  5. Pittsburgh coal seam - Wikipedia

    en.wikipedia.org/wiki/Pittsburgh_coal_seam

    The primary reason for the switch from wood to coal was one of economics. In 1809, a cord of wood cost $2.00 and a bushel of coal cost $0.06, delivered. The coal was plentiful and laborers, working in mines within a mile of Pittsburgh, earned about $1.60 per week and could produce as many as 100 bushels of coal daily. [22]

  6. History of anthracite coal mining in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/History_of_anthracite_coal...

    Prior to the Civil War, the industry involved many small-scale mines with short-term leases resulting in increasing production levels but an overall trend of falling prices. In 1830, anthracite coal was selling for $11 per ton, in 1840 it was $7 per ton, and by 1860 it was $5.50 a ton in NYC, while total production was increasing. [20]

  7. Crushed stone - Wikipedia

    en.wikipedia.org/wiki/Crushed_stone

    Crushed stone has one of the lowest average by weight values of all mineral commodities. The average unit price increased from US$1.58 per metric ton, f.o.b. plant, in 1970 to US$4.39 in 1990. However, the unit price in constant 1982 dollars fluctuated between US$3.48 and US$3.91 per metric ton for the same period.

  8. Sand mining - Wikipedia

    en.wikipedia.org/wiki/Sand_mining

    Sand pit along the Mississippi River, United States Artificial lake with frac sand dredger. Sand mining is the extraction of sand, mainly through an open pit (or sand pit) [1] [failed verification] [2] but sometimes mined from beaches and inland dunes or dredged from ocean and river beds. [3]

  9. Harrison County History of Coal Museum - Wikipedia

    en.wikipedia.org/wiki/Harrison_County_History_of...

    Harrison County was a top coal-producing county in Ohio. The general history of mining in this county and Eastern Ohio is covered by Ida Mae Stull. She was nationally recognized as the country's first woman coal miner, [2] to the decline of the industry during the 1980s. Items from local mines are also on display.

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