Tin-Mining in Spain Past And Present
Tin-Mining in Spain Past And Present
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If only miner-like methods, and proper and reasonable economy be employed, there is no reason why a large proportion of the prospects along the tin-belt should not be made handsomely^ remunerative. There are, at the present moment no fewer than seven distinct prospects between Coruiia and Zamora, including two in Portugal, in course of development by English Companies, while several others are about to be started. In the case of four out of the seven the indications of a good return are excelle...nt, while in that of the othera 32 a sufficient depth has not been attained to justify a forecast of their worth.
The statement, sometimes made, that ^'tin does not go deep in Spain/' is an error which carries on its face its own confutation. Not only is there no reason why the conditions under which the mineral occurs here should differ from those which obtain in other stanniferous districts, but in the deep gorges of the Douro, as I have myself had occasion to observe, it occurs both on the tops of the hills and close down to the water*s edge, some 500 feet below, while what may lie below the level of the river beds, the most likely depth, be it remem- bered, at which to find true fissure veins, is still an unknown quantity since no shafts, sunk so deep, exist.^**^ Tin there is, then, in quantity, and she offers herself to the intelligent miner under the most favorable conditions, being, in general, exceptionally free from those impurities, which make the processes .of dressing and smelting difficult and costly.
What to read after Tin-Mining in Spain Past And Present?
You can find similar books in the "Read Also" column, or choose other free books by Borlase, William Copeland, 1848-1899 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
If only miner-like methods, and proper and reasonable economy be employed, there is no reason why a large proportion of the prospects along the tin-belt should not be made handsomely^ remunerative. There are, at the present moment no fewer than seven distinct prospects between Coruiia and Zamora, including two in Portugal, in course of development by English Companies, while several others are about to be started. In the case of four out of the seven the indications of a good return are excelle...nt, while in that of the othera 32 a sufficient depth has not been attained to justify a forecast of their worth.
The statement, sometimes made, that ^'tin does not go deep in Spain/' is an error which carries on its face its own confutation. Not only is there no reason why the conditions under which the mineral occurs here should differ from those which obtain in other stanniferous districts, but in the deep gorges of the Douro, as I have myself had occasion to observe, it occurs both on the tops of the hills and close down to the water*s edge, some 500 feet below, while what may lie below the level of the river beds, the most likely depth, be it remem- bered, at which to find true fissure veins, is still an unknown quantity since no shafts, sunk so deep, exist.^**^ Tin there is, then, in quantity, and she offers herself to the intelligent miner under the most favorable conditions, being, in general, exceptionally free from those impurities, which make the processes .of dressing and smelting difficult and costly.
What to read after Tin-Mining in Spain Past And Present?
You can find similar books in the "Read Also" column, or choose other free books by Borlase, William Copeland, 1848-1899 to read onlineMoreLess
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