Matches in DBpedia 2014 for { ?s ?p <http://dbpedia.org/resource/Category:Mining_in_Pennsylvania> . }
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- Clearfield_Coalfield subject Category:Mining_in_Pennsylvania.
- Coal_Strike_of_1902 subject Category:Mining_in_Pennsylvania.
- Connellsville_Coalfield subject Category:Mining_in_Pennsylvania.
- Henry_Blake_Hays subject Category:Mining_in_Pennsylvania.
- Huber_Breaker subject Category:Mining_in_Pennsylvania.
- James_H._Hays subject Category:Mining_in_Pennsylvania.
- Keystone_Bituminous_Coal_Ass'n_v._DeBenedictis subject Category:Mining_in_Pennsylvania.
- Molly_Maguires subject Category:Mining_in_Pennsylvania.
- Nittany_Furnace subject Category:Mining_in_Pennsylvania.
- Pennsylvania_Coal_Co._v._Mahon subject Category:Mining_in_Pennsylvania.
- Pittsburgh_Coalfield subject Category:Mining_in_Pennsylvania.
- Pittsburgh_coal_seam subject Category:Mining_in_Pennsylvania.
- St._Nicholas_coal_breakers subject Category:Mining_in_Pennsylvania.
- Streets_Run subject Category:Mining_in_Pennsylvania.
- Westmoreland_County_coal_strike_of_1910–11 subject Category:Mining_in_Pennsylvania.
- Workingmen's_Benevolent_Association_of_Schuylkill_County subject Category:Mining_in_Pennsylvania.
- Category:Anthracite_Coal_Region_of_Pennsylvania broader Category:Mining_in_Pennsylvania.
- Category:Coal_mining_disasters_in_Pennsylvania broader Category:Mining_in_Pennsylvania.
- Category:Mines_in_Pennsylvania broader Category:Mining_in_Pennsylvania.
- Category:Mining_communities_in_Pennsylvania broader Category:Mining_in_Pennsylvania.
- Category:Mining_museums_in_Pennsylvania broader Category:Mining_in_Pennsylvania.