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  2. Keeling Coal Company - Wikipedia

    en.wikipedia.org/wiki/Keeling_Coal_Company

    An underground transportation system connecting the Ormsby mine with other local coal mines was begun in 1867. [4] Like many mine railroads in the Pittsburgh area, this was a 3 ft 4 in (1,016 mm) narrow gauge line. [5] After the coal was removed, it was transported underground from the South Hills to industries along the Monongahela river.

  3. National Mine Map Repository - Wikipedia

    en.wikipedia.org/wiki/National_Mine_Map_Repository

    The Green Tree facility provides and stores, digitally and in microfilm (aperture cards), [4] over 182,000 maps of abandoned mines. This repository contains maps of mine workings from the 1790s to the present day. [5] It serves as a point of reference for mine maps and other information for both surface and underground mines throughout the ...

  4. Pitt Lake's lost gold mine - Wikipedia

    en.wikipedia.org/wiki/Pitt_Lake's_lost_gold_mine

    Jackson deposited $8,700 in gold in the Bank of British North America in San Francisco—an affiliate of a Canadian bank. Before he died, Jackson, suffering from the hardships of the search, sent a letter and a map with the information about the location of the treasure to a friend in Seattle called Shotwell.

  5. Mount Washington, Pittsburgh (mountain) - Wikipedia

    en.wikipedia.org/wiki/Mount_Washington...

    In the early history of Pittsburgh, Mount Washington was known as Coal Hill, but Coal Hill was actually on the south bank of the Monongahela River. [1] Easy access to the Pittsburgh coal seam's outcrop near the base of Mount Washington allowed several mines to operate there. Also, rock was quarried from the hill.

  6. Pittsburgh coal seam - Wikipedia

    en.wikipedia.org/wiki/Pittsburgh_coal_seam

    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] The Pittsburgh seam was America's principal seam of coal production during the late nineteenth and early twentieth century. [23]

  7. Old School RuneScape - Wikipedia

    en.wikipedia.org/wiki/Old_School_RuneScape

    Old School RuneScape is a massively multiplayer online role-playing game (MMORPG), developed and published by Jagex.The game was released on 16 February 2013. When Old School RuneScape launched, it began as an August 2007 version of the game RuneScape, which was highly popular prior to the launch of RuneScape 3.

  8. Experimental Mine, U.S. Bureau of Mines - Wikipedia

    en.wikipedia.org/wiki/Experimental_Mine,_U.S...

    In 1910, the newly created U.S. Bureau of Mines leased a 38-acre tract of land from the Pittsburgh Coal Company and opened the Experimental Mine. One of the early findings in the Experimental Mine demonstrated that coal dust by itself was capable of propagating an explosion even in the absence of any methane gas .

  9. Darr Mine disaster - Wikipedia

    en.wikipedia.org/wiki/Darr_Mine_disaster

    The mine was operated by the Pittsburgh Coal Company. It was located on the west side of the Youghiogheny River and along the route of the Pittsburgh and Lake Erie Railroad . Most of the miners and other mine laborers lived in the nearby community of Jacobs Creek and took a "sky ferry" ( aerial tramway ) across the Youghiogheny River to the ...

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