. Bulletin. A. THIN VERTICAL SECTION OF COAL (X 200) FROM THE OAK MINE, SECOND B. ANOTHER CROSS SECTION FROM SAME COAL AS ABOVE. (X 200)15G BUREAU OF MINES BULLETIN 117 PLATE Llll . ! = -s*»-»_ Jr- ** -»^ 3 * >#$s£S25*3£S^ « i Sbm rjfW;rt!tJ u .iSTT -£ . ■J IUSJIHkkvu* ^-iS?^ K. ^i^pB^^^^^^^Hi^^^^B iHU. , ■»_; .1. AREA FROM PLATE XLIV, .4. (X 200)

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou