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"Nearly half a century ago, Duquesne Light needed an efficient way to move coal from its Warwick Mine near Bobtown, in Greene County, to the Monongahela River, where it could be loaded on barges for..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.observer-reporter.com/article/20130331/NEWS01/130339916/0/LIFESTYLES05>