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| TITLE |
Different Methods of Alluvial Mining in Victoria |
| SUMMARY |
... boring) under the centre of the lead, bores are put up from the back of the drive and the water drained, until it is possible to construct a rise into the wash ... |
| PUBLISHED |
1902 |
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| TITLE |
Large-Diameter Core Drill For Geologic Exploration |
| SUMMARY |
... Until recently, such exploration has consisted mainly of small- diameter (diamond or shot) core drilling, wash-boring, trenching, test- pitting, tunneling, and ... |
| AUTHOR |
Moneymaker, Berlin C. ; Fox, Portland P. |
| PUBLISHED |
1938 |
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Showing: 1 to 10 of 475 matches for "WASH BORING"
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9 next
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