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63:since the 18th century.
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74:Pittsburgh Coal Company
145:monroeville coal mine.
96:, on the North by the
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76:, which later became
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114:Pittsburgh coal seam
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163:"Pittsburgh Field"
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170:. Retrieved
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272:Courthouse
249:Government
172:2007-11-18
120:References
65:U.S. Steel
61:Pittsburgh
45:Washington
29:coalfields
534:Nicknames
514:Hospitals
426:Green Man
327:Education
317:Libraries
267:City Hall
33:Allegheny
580:Category
490:timeline
464:Filming
385:HYP Club
342:Regional
292:InterGov
108:See also
601:80°00′W
598:40°05′N
524:Museums
480:History
443:Dialect
421:theatre
411:Culture
352:Economy
322:Transit
307:Sheriff
282:Council
257:Airport
37:Fayette
561:Sports
544:Region
448:Yinzer
297:Police
287:Events
47:, and
41:Greene
639:This
519:Media
468:films
332:Parks
277:Mayor
645:stub
485:name
455:Flag
337:Port
312:Fire
88:and
67:and
57:Coal
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