The Encyclopedia Americana: A Library of Universal Knowledge, Količina 7Americana corporation, 1931 |
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Stran 486
... practice , notably the expense and liability to loss . The Seger cones per- form the same service and are very inexpen- sive . The cones range in numbers from 1 to 36 and back from -1 to -22 . In practice two or three cones ...
... practice , notably the expense and liability to loss . The Seger cones per- form the same service and are very inexpen- sive . The cones range in numbers from 1 to 36 and back from -1 to -22 . In practice two or three cones ...
Stran 655
... Practice of Copper Smelting ) ( New York 1911 ) ; Wiard , E. S. , ' Theory and Practice of Ore Dressing ' ( New York 1915 ) ; Weed's ' Mining and Copper Handbook . ' RICHARD FERRIS , Editorial Staff of The Americana . COPPER , Discovery ...
... Practice of Copper Smelting ) ( New York 1911 ) ; Wiard , E. S. , ' Theory and Practice of Ore Dressing ' ( New York 1915 ) ; Weed's ' Mining and Copper Handbook . ' RICHARD FERRIS , Editorial Staff of The Americana . COPPER , Discovery ...
Stran 659
... practice that is now going out of use is carried back to the stamp , or , under better practice , passes directly to a set of rolls that crushes it to a smaller size , thus liberating the included copper and increasing by so much the ...
... practice that is now going out of use is carried back to the stamp , or , under better practice , passes directly to a set of rolls that crushes it to a smaller size , thus liberating the included copper and increasing by so much the ...
Vsebina
PALMER WALTER | 128 |
PICKERING WILLIAM | 285 |
SEE THOMAS J J Ph D | 361 |
Avtorske pravice | |
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