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Books Bücher 1 - 7 von 7 in ... (3) Ores that are too low in silver and lead to be used directly as a source...
" ... (3) Ores that are too low in silver and lead to be used directly as a source of these metals and too low in iron and manganese to be used for the manufacture of spiegeleisen and ferromanganese are sent to the smelters to be used for fluxing purposes... "
Bulletin - United States Geological Survey - Seite 25
von Geological Survey (U.S.) - 1910
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Mineral Resources of Alaska: Report on Progress of ..., Ausgaben 376-379

Geological Survey (U.S.), Alfred Hulse Brooks - 1909 - 418 Seiten
...ores. A fourth class of manganiferous silver ore is too low in silver and lead to be used primarily for these metals and too low in iron and manganese to be used for the manufacture of iron-manganese alloys. This ore is sold to the smelters as flux, the iron and manganese becoming waste...
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Manganese Deposits of the United States with Sections on Foreign Deposits ...

Edmund Cecil Harder - 1910 - 298 Seiten
...pp. 162-63. c Andrussow, N., Guide des excursions du VII Congrte g<Sol. internat., 1897, XXIX, p. 13. Manganiferous silver ores occur abundantly in the...their content of iron and manganese oxides. The silver and lead present, however, are recovered during the smelting, while the iron and manganese pass into...
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Manganese Deposits of the United States with Sections on Foreign Deposits ...

Edmund Cecil Harder - 1910 - 298 Seiten
...Andrussow, N., Guide des excursions du VII Congr&i giSol. internal., 1897, XXIX, p. 13. MANGANIFEROUS SILVER ORES. Manganiferous silver ores occur abundantly...iron and manganese to be used for the manufacture of spiegcleisen and ferromanganese are sent to the smelters to be used for fluxing purposes on account...
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Congressional Serial Set

1911
...There is a third class of manganiferous silver ore too low in silver and lead to be used primarily for these metals and too low in iron and manganese to be used for the manufacture of iron-manganese alloys. This ore is sold to the smelters as flux, the iron and manganese becoming waste...
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Mineral Resources of the United States, Teil 1

United States. Bureau of Mines - 1913
...class of manganiferous silver ore is too low in silver and lead to be used primarily for their content of these metals and too low in iron and manganese to be used for tho manufacture of ironmanganese alloys. This ore is sold to the smelters as flux, the iron and manganese...
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Mineral Resources of the United States, Teil 1

United States. Bureau of Mines - 1913
...class of manganiferous silver ore is too low in silver and lead to be used primarily for theh1 content of these metals and too low in iron and manganese to be used for the manufacture of ironmanganese alloys. This ore is sold to the smelters as flux, the iron and manganese becoming waste...
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Mineral Resources of the United States, Teil 1

United States. Bureau of Mines - 1909
...There is a third class of manganiferous silver ore too low in silver and lead to be used primarily for these metals and too low in iron and manganese to be used for the manufacture of iron-manganese alloys. This ore is sold to the smelters as flux, the iron and manganese becoming waste...
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