Opinião das pessoas - Escrever uma crítica
Não foram encontradas quaisquer críticas nos locais habituais.
acid addition alloys Amblygonite American arch aromatic atmospheres average boiling Bureau of Mines capacity carbonate catalyst Chem Chemical chloride coal coke completed compounds concentrate consumption containing Copper Corp countries crystals deposits developed drift effect estimated feet FIGURE follows foreign fraction Fuel German heat hydrocarbons Hydrogenation important inches increased industry iron Italy Jour lepidolite lignite listed lithium minerals Low-Temperature manufacture material metal method miles mill million MONTHS obtained occur operation oxide Patent pegmatites percent Petroleum phenols plant pounds prepared present pressure production properties quantities reaction Recession recovered Refining reported reserves rock salt Searles Lake sets short sodium solution sources South spodumene steel stocks supply TABLE temperature tion tons translations United vanadium various wastes weight West World yield yieldable zone
Página 73 - extraction of the ores or minerals from the ground" includes the extraction by mine owners or operators of ores or minerals from the waste or residue of prior mining. The preceding sentence...
Página 78 - Violations. Any person who wilfully violates any provision of this order, or who, in connection with this order, wilfully conceals a material fact or furnishes false information to any department or agency of the United States, is guilty of a crime, and upon conviction may be punished by fine or imprisonment. In addition, any such person may be prohibited from making or obtaining further deliveries of, or from processing or using, material under priority control and may be deprived of priorities...
Página 73 - In order to obtain the commercially marketable mineral product or products, and so much of the transportation of ores or minerals (whether or not by common carrier) from the point of extraction from the ground to the plants or mills in which the ordinary treatment processes are applied thereto as is not in excess of 50 miles unless the Secretary or his delegate finds that the physical and other requirements are such that the ore or mineral must be transported a greater distance to such plants or...
Página 70 - Minerals, crude, or not advanced in value or condition by refining or grinding, or by other process of manufacture, not specially provided for.
Página 73 - As used in this paragraph the term "gross income from the property" means the gross income from mining. The term "mining", as used herein, shall be considered to include not merely the extraction of the ores or minerals from the ground but also the ordinary treatment processes normally applied by mine owners or operators in order to obtain the commercially marketable mineral product or products.
Página 73 - ... celestite, chromite, corundum, fluorspar, graphite, ilmenite, kyanite, mica, olivine, quartz crystals (radio grade), rutile, block steatite talc, and zircon, and ores of the following metals: antimony, bismuth, cadmium, cobalt, columbium, lead, lithium, manganese, mercury, nickel, platinum and platinum group metals, tantalum, thorium, tin, titanium, tungsten, vanadium, and zinc.
Página 73 - ... (D) in the case of lead, zinc, copper, gold, silver, or fluorspar ores, potash, and ores which are not customarily sold in the form of the crude mineral product...
Página 73 - ... crushing, grinding, and beneficiation by concentration (gravity, flotation, amalgamation, electrostatic, or magnetic), cyanidation, leaching, crystallization, precipitation (but not including as an ordinary treatment process electrolytic deposition, roasting, thermal or electric smelting, or refining), or by substantially equivalent processes or combination of processes used in the separation or extraction of the product or products from the ore, including the furnacing of quicksilver ores.