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  2. Category:Mining in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Category:Mining_in...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us

  3. List of ghost towns in Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/List_of_ghost_towns_in...

    A coal mining ghost town, often known as Humphries after the owner of the mine. [27] Claghorn: Indiana County: East Wheatfield Township: Along the Ghost Town Trail: Cokeville: Broad Fording Westmoreland County: Derry Township: Submerged a Pennsylvania Canal & coal mining ghost town, under the waters of Conemaugh River Lake. [28] Cold Spring ...

  4. Bear Valley Strip Mine - Wikipedia

    en.wikipedia.org/wiki/Bear_Valley_Strip_Mine

    The Bear Valley Strip Mine is an abandoned coal strip mine located in Coal Township, Northumberland County, to the southwest of the town of Shamokin, Pennsylvania. It lies in the Western Middle Field of the Anthracite belt in the Ridge-and-Valley Appalachians , where the Pennsylvanian Llewellyn Formation is exposed.

  5. Coal mining in Plymouth, Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Coal_Mining_in_Plymouth...

    About 1806, Abijah Smith came to Plymouth from Derby, Connecticut, intending to mine, ship, and sell coal.Smith and Lewis Hepburn, his business partner, bought a 75-acre plot (Lots 45 and 46 on the Plymouth Township Warranty Map) on the east side of Coal Creek, and in the fall of 1807, Smith floated an ark down the Susquehanna River loaded with about fifty tons of anthracite coal, shipping it ...

  6. Robertsdale, Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Robertsdale,_Pennsylvania

    The last of the deep coal mines closed in the early 1950s. Mine #1 closed in 1951. As the demand for coal continued to slacken, RI&C shut down in 1956 along with the EBT and both were sold to the Kovalchick Salvage Company of Indiana, Pennsylvania. Limited deep mining resumed under contractors and contract surface mining continued into the 1990s.

  7. Yogo sapphire - Wikipedia

    en.wikipedia.org/wiki/Yogo_sapphire

    The mine shaft was 280 feet (85 m) deep and contained two Yogo ore-bearing veins. [84] The portion of the dike they had mined was an extension of the main dike. [85] The Vortex Mine, renamed Yogo Creek Mining, [18] was successful for years but eventually declined and closed in 2004. [85] A 0.19-carat (0.038 g) diamond cut cornflower blue Yogo ...

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  9. Category:Coal towns in Pennsylvania - Wikipedia

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