The Making of America, Volume 6Robert Marion La Follette De Bower, Chapline & Company, 1907 - Inventors |
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Page 169
... mass , glowing so fiercely that the unaccustomed eye cannot gaze upon it for long at a time . The dark figures moving about quickly and silently in the gloom and numerically they seem hopelessly inadequate to cope with such a monster ...
... mass , glowing so fiercely that the unaccustomed eye cannot gaze upon it for long at a time . The dark figures moving about quickly and silently in the gloom and numerically they seem hopelessly inadequate to cope with such a monster ...
Page 308
... mass to cool slowly . As cast iron can retain in combination a much larger proportion of carbon when molten than when solid , the cooling of the mass causes the carbon to separate out , forming scales of graphite disseminated throughout ...
... mass to cool slowly . As cast iron can retain in combination a much larger proportion of carbon when molten than when solid , the cooling of the mass causes the carbon to separate out , forming scales of graphite disseminated throughout ...
Page 310
... mass is kept moist for several weeks , in order to insure the expulsion of any air bubbles which may have been formed in the mixing . This stage of the work is called tem- pering . A portion of the tempered mixture of the proper weight ...
... mass is kept moist for several weeks , in order to insure the expulsion of any air bubbles which may have been formed in the mixing . This stage of the work is called tem- pering . A portion of the tempered mixture of the proper weight ...
Contents
Mineral Resources of the United States | 1 |
Americas Underground Workers | 15 |
Platinum | 16 |
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American anthracite asphaltum average bauxite Bessemer Bessemer process bituminous blast furnace borax brown hematite buckets California carbon Carnegie cars cent clay coal coke color Colorado Comstock lode Connellsville considerable copper cost crystals cyanide process deposits district drifts drill electric engineer exports extensive fire damp fuel gold grade graphite gypsum hematite hoisting important inches increase iron and steel iron industry iron oxide known Lake Superior lead less limestone locomotives machine magnetites manufacture material metal method miles million mills mineral mines motor natural gas Nevada North obtained Ohio open hearth operation output Pennsylvania petroleum pig iron pipe Pittsburg plants plates pounds production pump pyrite quantity quartz railroad rails railway red hematite region rich rock salt sand shaft short tons silver smelting solution steam Steel company stone supply surface talc tion tons trade United Utah veins Virginia wire zinc