Convention, Volume 1;Volume 38;Volume 56 |
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Halaman 66
... dredge into the pond . As the dredge moves forward , it carries its pond with it and sufficient make up water has to be supplied to compensate for seepage and evaporation . In electrically operated gold dredges , the current is ...
... dredge into the pond . As the dredge moves forward , it carries its pond with it and sufficient make up water has to be supplied to compensate for seepage and evaporation . In electrically operated gold dredges , the current is ...
Halaman 84
National Electric Light Association. Convention. SUCTION DREDGING The suction dredge consists essentially of a hull ... dredge from side to side , the dredge being pivoted on a " spud " at the opposite end . In one particular typical case ...
National Electric Light Association. Convention. SUCTION DREDGING The suction dredge consists essentially of a hull ... dredge from side to side , the dredge being pivoted on a " spud " at the opposite end . In one particular typical case ...
Halaman 97
... case where we had a small power house with a dredge operating from it , and whenever this dredge struck a large boulder it would bring the power house to a stand - still . In the main dredging districts that we serve we have so many dredges ...
... case where we had a small power house with a dredge operating from it , and whenever this dredge struck a large boulder it would bring the power house to a stand - still . In the main dredging districts that we serve we have so many dredges ...
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MOORE President PanamaPacific | 6 |
2Report of Committee on Typical Power Sales | 63 |
II | 87 |
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