. Bulletin. ^ notingon the contour map the ultimate production per acre of differentwells or the initial production of each well. (See fig. 39, on p. 180.) 3. The most favorable undrilled tracts for the accumulation ofoil and gas, when the underground contour map is used in conjunc- BUREAU OF MINES. Each peg represents an

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou