The Magazine of History: With Notes and Queries. Extra numbers, Issue 181, Volume 46 - Issue 188, Volume 47W. Abbatt., 1933 |
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Page 160
... gold and pulverized quartz are constantly being splashed by the falling of the stampers ; and should the rock not be pulverized sufficiently fine to pass through these discharge - screens it again falls back upon the bed - plate to ...
... gold and pulverized quartz are constantly being splashed by the falling of the stampers ; and should the rock not be pulverized sufficiently fine to pass through these discharge - screens it again falls back upon the bed - plate to ...
Page 161
... gold than his neighbor . One of the first used , as well as one of the most useful and most important , is the Mexican Rastra . * Though rude in its construction and simple in its working , it is one of the most effectual methods of ...
... gold than his neighbor . One of the first used , as well as one of the most useful and most important , is the Mexican Rastra . * Though rude in its construction and simple in its working , it is one of the most effectual methods of ...
Page 163
... gold . Quicksilver should also be kept very free from grease , as it cannot be too clean ; and should invariably be ... gold is there saved , in proportion , to the ton . The amalgam is then taken out of the crevices in the bottom of the ...
... gold . Quicksilver should also be kept very free from grease , as it cannot be too clean ; and should invariably be ... gold is there saved , in proportion , to the ton . The amalgam is then taken out of the crevices in the bottom of the ...
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