Report of the Bureau of Mines of the Department of Internal Affairs of Pennsylvania . ^gsllllll«IIIIIIS^|^sll|||||||g M a; o .11: -o . c en -< OJ • c 0 Q. C rt t5 : 0 :• 1-5 • m t< ?o •a . ^ ? 0) 0 ??^B ?•; c > :^^ : : :X . ? ? ? §^::;t, . . |i. -^ c . ?«c ?-• t: ;2e 5 : :WmU Oi ^rt X • o u n^w : .«rj o ;> - o ??^•^r,^?! c b CD 4, 3 ; -i ; ;p-iSfe i^w^-^m^i^ ;|e^ f?s^e= ;=|s>°c.

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcoalmin, bookyear1900