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Gold Dredging
Mining engineer Cecil Longridge offers a detailed introduction to the art and science of gold dredging, a common method...... more |
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Gold Dredging
Mining engineer Cecil Longridge offers a detailed introduction to the art and science of gold dredging, a common method...... more |
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Hydraulic Mining; Volume 3
This work has been selected by scholars as being culturally important, and is part of the knowledge ... more |
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Hydraulic Mining, Part 2
This work has been selected by scholars as being culturally important, and is part of the knowledge ... more |
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Hydraulic Mining; Volume 3
This work has been selected by scholars as being culturally important, and is part of the knowledge ... more |
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Hydraulic Mining, Part 2
This work has been selected by scholars as being culturally important, and is part of the knowledge ... more |
