| http://www.w3.org/ns/prov#value | - Pennsylvania is the greatest mining State in the Union; its iron-mines and petroleum-wells supply half the iron and most of the oil used in the country; its bituminous coal-beds in the W. are extremely rich, and the anthracite deposits of the E. are unrivalled; in manufactures, too, it ranks second among the States; these are very varied, the most valuable being iron, steel, and shipbuilding.
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