 | 1897 - 298 halaman
...then shaken and held in such a way that the gravel and sand are gradually washed out, care being taken to avoid letting out the finer and heavier parts that...gold comes in contact with the mercury, it combines and forms an amalgam. This process is continued until enough amalgam has been formed to pay for 'roasting'... | |
 | A. C. Harris - 1897 - 572 halaman
...taken to avoid letting out the finer and heavier parts that have settled to the bottom. Finally'all that is left in the pan is whatever gold may have...gold comes in contact with the mercury it combines and forms an amalgam. This process is continued until enough amalgam has been formed to pay for 'roasting'... | |
 | Horace Fletcher Clark, Charles C. Heltman, Charles F. Consaul - 1898 - 450 halaman
...gravel or sand in his pan, which is a broad, shallow dish, made of strong sheet iron; he then puts in water enough to fill the pan, and gives it a few...mercury. As soon as the gold comes in contact with mercury it combines with it and forms an amalgam. The process is continued until enough amalgam has... | |
 | William Ogilvie - 1898 - 184 halaman
...gravel or sand in his pan, which is a broad, shallow dish, made of strong sheet steel ; he then puts in water enough to fill the pan, and gives it a few...pound or two of mercury. As soon as the gold comes into contact with the mercury it combines with it and forms an amalgam. The process is continued until... | |
 | 1898 - 790 halaman
...and some black sand which almost invariably accompanies it. This black sand is nothing but pulveri2ed magnetic iron ore. Should the gold thus found be fine,...formed to pay for "roasting" or "firing." It is then squee2ed through a buckskin bag, all the mercury that comes through the bag being put back into the... | |
 | Cecil Clement Longridge - 1902 - 184 halaman
...recover the gold, the nuggets are picked out, and the sands and fine gold are thrown into a vessel with water and a pound or two of mercury. As soon as the gold comes in contact with this, it is amalgamated. When there is enough amalgam to pay for roasting, it is collected, the mercury... | |
 | Astrid Sigel, Helmut Sigel - 1997 - 656 halaman
...so-called pan or hand amalgamation was used, especially for fine ores. The contents of the pan were thrown into a barrel containing water and a pound or two of mercury. The process was continued until there was enough amalgam formed to pay for the roasting or firing.... | |
 | A. C. Harris - 1897 - 572 halaman
...then shaken and held in such a way that the gravel and sand arc gradually washed out, care being taken to avoid letting out the finer and heavier parts that...gold comes in contact with the mercury it combines and forms an amalgam. This process is continued until enough amalgam has been formed to pay for 'roasting'... | |
| |
... to avoid letting out the finer and heavier parts that have settled to the bottom. Finally all that is left in the pan is whatever gold may have been in the dish, and some black sand which almost invariably accompanies it. This black sand is nothing... 