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Anglický jazyk
Andrews, E: Molybdenum (Classic Reprint)
Excerpt from Molybdenum
Here we have no defined fissure or reef such as one looks for-when prospecting for gold and silver. Our only plan is now to follow the molybdenite - bearing quartz.* No one can tell you how the pipe will run, for no two pipes...
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Excerpt from Molybdenum
Here we have no defined fissure or reef such as one looks for-when prospecting for gold and silver. Our only plan is now to follow the molybdenite - bearing quartz.* No one can tell you how the pipe will run, for no two pipes underlay in quite the same way. The pipe may broaden or become pinched, it may run vertically or bend over, it may keep on a general underlie; but it generally twists over and round like a bent corkscrew. '_sometimes, however, molybdenite occurs in true veins or dykes (of quartz with felspar) _ih payable quantities. The prospector must use his own judgment as to whether a vein is worth exploiting.
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- Vydavateľstvo: Forgotten Books
- Formát: Paperback
- Jazyk: Anglický jazyk
- ISBN: 9781334491351
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