Minerals YearbookThe Bureau, 1973 - Mineral industries |
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... Gold , by J. M. West 539 Graphite , by David G. Willard 561 Gypsum , by Avery H. Reed 569 Helium , by Gordon W. Koelling 577 Iron ore , by F. L. Klinger and Harold J. Polta 585 Iron and steel , by F. E. Brantley 609 Iron and steel scrap ...
... Gold , by J. M. West 539 Graphite , by David G. Willard 561 Gypsum , by Avery H. Reed 569 Helium , by Gordon W. Koelling 577 Iron ore , by F. L. Klinger and Harold J. Polta 585 Iron and steel , by F. E. Brantley 609 Iron and steel scrap ...
Page 1
... gold reserves declined slightly during 1971. Most of this was in the first half of the year ; the reserve was level dur- ing the second half of the year . 1 Economist , Office of Economic Analysis . 2 Commodity research specialist ...
... gold reserves declined slightly during 1971. Most of this was in the first half of the year ; the reserve was level dur- ing the second half of the year . 1 Economist , Office of Economic Analysis . 2 Commodity research specialist ...
Page 11
... gold is collected from a cyan- ide slurry on activated carbon . Gold - bearing carbon is stripped using hot water under pressure yielding a concentrated gold solu- tion and barren carbon for recycle . Pilot plant tests of the new carbon ...
... gold is collected from a cyan- ide slurry on activated carbon . Gold - bearing carbon is stripped using hot water under pressure yielding a concentrated gold solu- tion and barren carbon for recycle . Pilot plant tests of the new carbon ...
Page 16
... gold . Some of the above actions involved pow- ers granted the President by law ; the others were passed without great difficulty . Only three laws passed in 1971 dealt di- rectly with minerals . They all dealt with import regulations ...
... gold . Some of the above actions involved pow- ers granted the President by law ; the others were passed without great difficulty . Only three laws passed in 1971 dealt di- rectly with minerals . They all dealt with import regulations ...
Page 57
... gold , zinc , barite , and gypsum mines . Recent mining developments in the U.S. have been strongly influenced by mine health and safety requirements and environ- mental considerations , and future trends are expected to reflect the ...
... gold , zinc , barite , and gypsum mines . Recent mining developments in the U.S. have been strongly influenced by mine health and safety requirements and environ- mental considerations , and future trends are expected to reflect the ...
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add to totals alloys alumina aluminum antimony average avoid disclosing individual barite bauxite bituminous bituminous coal Bureau of Mines Canada carbon cement cent Chemical chromite clay coal coke Colorado company confidential data concentrates consumed copper Corp countries creased crude oil declined decreased disclosing individual company District domestic estimated exports feldspar ferroalloys ferrochromium fluorspar furnace gasoline Germany gold grade gypsum imports for consumption Includes increased independent rounding individual company confidential industry iron and steel Japan lead lignite long tons magnesium manganese material ment metal Mexico mica mill million barrels million cubic feet million tons mineral molybdenum natural gas liquids nickel nonmetal North Dakota Ohio operations ounces output oxide Pennsylvania percent petroleum plant pounds production refined refineries reported Republic scrap shipments smelter sold stocks Table tantalum Texas thousand short tons tion tons Value totals shown United Kingdom Utah Value thousands Withheld to avoid yearend zinc