Mineral Resources of the United StatesU.S. Government Printing Office, 1927 |
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Página 132
... deposits of the West , the copper ores of the Lake Superior region , and other ores in which copper is the most abundant base metal paid for . The lead and zinc ores are those in which lead or zinc is the only or chief base metal ...
... deposits of the West , the copper ores of the Lake Superior region , and other ores in which copper is the most abundant base metal paid for . The lead and zinc ores are those in which lead or zinc is the only or chief base metal ...
Página 18
... DEPOSITS AUSTRALASIA It is reported that from the working of 300 to 400 yards of gravel on Yodda and Gira rivers , in Papua , during the year ending June 30 , 1921 , 208 ounces of osmiridium was saved , as well as some gold . More ...
... DEPOSITS AUSTRALASIA It is reported that from the working of 300 to 400 yards of gravel on Yodda and Gira rivers , in Papua , during the year ending June 30 , 1921 , 208 ounces of osmiridium was saved , as well as some gold . More ...
Página 20
... deposits gave out . The Transvaal Platinum ( Ltd. ) was formed by Mr. Baumann to work this and all or part of the following adjoining properties : Rietfontein No. 1638 , Rietfontein No. 3 , Doornhoek No. 896 , Kromkloof No. 1637 ...
... deposits gave out . The Transvaal Platinum ( Ltd. ) was formed by Mr. Baumann to work this and all or part of the following adjoining properties : Rietfontein No. 1638 , Rietfontein No. 3 , Doornhoek No. 896 , Kromkloof No. 1637 ...
Página 21
... deposits ; Nylstroom Platinum ( Ltd. ) , which holds an option over the southwestern part of Rietfontein No. 3 and several of the adjoining farms ; Waterberg Platinum ( Ltd. ) ; and Central Platinum ( Ltd. ) . The prevailing rock is the ...
... deposits ; Nylstroom Platinum ( Ltd. ) , which holds an option over the southwestern part of Rietfontein No. 3 and several of the adjoining farms ; Waterberg Platinum ( Ltd. ) ; and Central Platinum ( Ltd. ) . The prevailing rock is the ...
Página 23
... deposits in these countries , it may 1 The figures for imports and exports in the tables in this report have been compiled by J. A. Dorsey , of the United States Geological Survey , from records of the Bureau of Foreign and Domestic ...
... deposits in these countries , it may 1 The figures for imports and exports in the tables in this report have been compiled by J. A. Dorsey , of the United States Geological Survey , from records of the Bureau of Foreign and Domestic ...
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Términos y frases comunes
alloys aluminum amalgamation amounted antimony Arizona bauxite bismuth bullion California cent of copper cents a pound Colorado containing copper Creek crude cyanidation decrease deep mines deposits district.-The domestic dredges Dry and siliceous dry gold exported feet ferromanganese figures galena gold and silver Gold Silver Copper grade gross tons Idaho included under Miscellaneous increased lead and zinc lead-zinc lithopone long tons manganese metal Mexico mill Mineral production Missouri Montana Nevada nickel operated ounces Fine ounces ounces of gold ounces of silver output pig iron Pittman Act placer mines plant platinum pounds of copper pounds of lead Pounds Pounds production of gold Quantity Value quicksilver recovered recovery refined reported scrap shaft shipments shipped Short tons Value siliceous Silver Copper Lead smelter smelting sphalerite spiegeleisen sulphide tons Value Short Total value troy ounces United Utah Value Pounds Value Value Short tons vanadium white arsenic yielded zinc concentrates zinc oxide
Pasajes populares
Página 126 - ... all pigments containing lead, dry or in pulp, or ground in or mixed with oil or water, not specially provided for, 30 per centum ad valorem.
Página 144 - Lead-bearing ore of all kinds, one and onehalf cents per pound on the lead contained therein : Provided, That on all importations of lead-bearing ores the duties shall be estimated at the port of entry, and a bond given in double the amount of such estimated duties for the transportation of the ores by common carriers bonded for the transportation of appraised or unappraised merchandise to properly equipped sampling or smelting establishments, whether designated as bonded warehouses or otherwise.
Página 65 - For this reason the smelter reports must be relied on for the silver production. As may be seen by inspection of the table, the quantity of silver produced in any year bears no direct ratio to the quantity of lead concentrates smelted during that year. The reason for this is that the silver content is so small in quantity that the silver bullion is stored and refined in batches.
Página 144 - ... estimated duties for the transportation of the ores by common carriers bonded for the transportation of appraised or unappraised merchandise to properly equipped sampling or smelting establishments, whether designated as bonded warehouses or otherwise. On the arrival of the ores at such establishments they shall be sampled according to commercial methods under the supervision of Government officers, who shall be stationed at such...
Página 56 - County, the extreme northwestern county of the State. The ores have the same structural relations as in the upper Mississippi district generally, that is, they occur disseminated through the limestone, or in openings in it called "crevices," "pitches," or "flats," depending on their attitude to the horizontal.
Página 262 - about " is used, it Is understood that 5 per cent more or less of the quantity may be delivered. (c) Should the seller fail to make deliveries as specified in the contract, the purchaser has the option of...
Página 97 - ... merchandise to properly equipped sampling or smelting establishments, whether designated as bonded warehouses or otherwise. On the arrival of the ores at such establishments they shall be sampled according to commercial methods under the supervision of Government officers, who shall be stationed at such establishments, and who shall submit the samples thus obtained to a Government assayer, designated by the Secretary of the Treasury, who shall make a proper assay of the sample and report the...
Página 549 - Approximate distribution, by producing States and Territories, of the production of gold and silver in the United States in 1923 [Figures supplied by the US Bureau of the Mint) • Gold valued at $20.67+ a fine ounce.
Página 314 - The following table shows the shipments of iron ore from Cuba since the opening of the mines in 1884. The statistics of the shipments of Cuban iron ore are collected by the United States Geological Survey.
Página 88 - But the intake at least into these channels of soldiers he said had averaged 8,000 per month. That was in his public statement. As I have understood it from all sources over there, there is considerably more at the end of the year than there was at the beginning. And you say so, too. How does that tie in with such a rosy report here that we are winning everything? Because in spite of the fine things you have done, it seems to me you still have a very formidable, determined, effective foe over there....