Mineral Resources of the United States, Parte1U.S. Government Printing Office, 1927 |
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Página 17
... dredge , on Cottonwood Creek , Shasta County , had worked out its ground and been abandoned in August , 1922. The dredges in Sacramento and San Joaquin valleys were about as productive as usual . The total recovery of crude platinum by ...
... dredge , on Cottonwood Creek , Shasta County , had worked out its ground and been abandoned in August , 1922. The dredges in Sacramento and San Joaquin valleys were about as productive as usual . The total recovery of crude platinum by ...
Página 19
... dredges in operation during that year . In preparation for 1923 opera- tions , about $ 400,000 worth of repair parts were obtained in England . At least two American - built dredges and one Putiloff dredge are reported in operation at ...
... dredges in operation during that year . In preparation for 1923 opera- tions , about $ 400,000 worth of repair parts were obtained in England . At least two American - built dredges and one Putiloff dredge are reported in operation at ...
Página 20
... dredges in the first year of its existence , now disposes of 23. During the current working year 5 of them have been restored and 2 new ones have been built , of which 1 is electric . Here it is necessary to observe that these dredges ...
... dredges in the first year of its existence , now disposes of 23. During the current working year 5 of them have been restored and 2 new ones have been built , of which 1 is electric . Here it is necessary to observe that these dredges ...
Página 331
... dredges ) amounting to $ 1,022,728 , and the net loss in gold output for the year was $ 1,291,333 , or 9 per cent , as com- pared with 1922. The quantity of silver increased 15 per cent , but the value decreased 6 per cent : Copper ...
... dredges ) amounting to $ 1,022,728 , and the net loss in gold output for the year was $ 1,291,333 , or 9 per cent , as com- pared with 1922. The quantity of silver increased 15 per cent , but the value decreased 6 per cent : Copper ...
Página 334
... dredges , 17 deep gold quartz mines , 2 copper mines , 2 silver mines , and 1 lead mine . The ten largest gold - producing companies , in order of output , were the Yuba Consolidated Gold Fields ( 6 dredges ) , Natomas Co. of California ...
... dredges , 17 deep gold quartz mines , 2 copper mines , 2 silver mines , and 1 lead mine . The ten largest gold - producing companies , in order of output , were the Yuba Consolidated Gold Fields ( 6 dredges ) , Natomas Co. of California ...
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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 County 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 increase lead and zinc lead-zinc lessees lithopone long tons manganese metal Mexico mill 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 quicksilver recovered recovery refined reported scrap shaft shipments shipped Short tons Value siliceous Silver Copper Lead small lot 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 140 - 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 259 - Composition or red brass : Shall consist of red scrap brass, valves, machinery bearings, and other parts of machinery, including miscellaneous castings made of copper, tin, zinc...
Página 122 - Acetate, white, 2^ cents per pound; acetate, brown, gray, or yellow, 2 cents per pound; nitrate, arsenate, and resinate, 3 cents per pound; and all other lead compounds not specially provided for, 30 per centum ad valorem. PAR. 48.
Página 140 - ... 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 95 - ... 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 122 - ... per pound; 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 87 - The Bureau of Foreign and Domestic Commerce records imports of "flint, flints, and flint stones, unground," from several countries. These imports are partly flint pebbles for use in grinding mills and partly material for uses such as are listed above. The figures can not be accurately separated. "Flint, flints, and flint stones, unground" imported for consumption in the United Stales, 1918-1923 • Quantities not recorded prior to July, 1918.
Página 298 - States, 1810-1923, in gross tons [Exclusive after 1905 of ore containing 5 per cent or more of manganese] • Includes ore produced by owners of blast furnaces, estimated by census at 800,000 tons.
Página 97 - The price of zinc has been taken from market reports; the price of zinc olende and the figures of weekly sales are those published in the Joplin daily papers. To eliminate the sharp weekly fluctuations and to obtain a curve more easily comparable with the price curves, the weekly sales have been averaged by months, the result being shown by the broken line. The price of prime western zinc at the beginning of the year in the St. Louis market was 7.05 cents, and after declining a little it rose in...
Página 56 - The galena ore, assaying 70 per cent lead and about 4.5 ounces of silver a ton, was shipped to the St. Louis plant of the National Lead Co. IOWA The lead and zinc deposits of Iowa extend along Mississippi River for nearly 80 miles, in Dubuque, Clayton, and Allamakee counties. No shipments of lead or zinc concentrates from mines in Iowa have been reported since 1918. KANSAS By JP DUNLOP Mine production of lead and zinc in Kansas...