Geology And Mining Industry of Leadville Colorado With Atlas
Geology And Mining Industry of Leadville Colorado With Atlas
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In our eReader you can find the full English version of the book. Read Geology And Mining Industry of Leadville Colorado With Atlas Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Geology And Mining Industry of Leadville Colorado With Atlas
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A considerable amount of so-called "Chinese talc" is found throughout the rich ore bodies, doubt- less the product of alteration of stringers of porphyry in the original limestone. South of the dike no considerable quantity of rich ore had been found at the time of examination, as the map shows ; explorations had, AMIE MINE.
473 however, by no means covered all the possible ground in which it might occur, so that the statement, that the southern ore body previously observed does not extend as f...ar east as this, rests on rather negative evidence. In only one point in the southern workings had a raise been made which found the Wash resting directly on the ore horizon. Elsewhere the covering of White Porphyry still remained. The actual width of the outcrop of the ore horizon in this ground is deduced from observations in the adjoining mines.
The workings of the Amie mine have been intelligently and systemat- ically conducted from the very commencement, so that it has had advan- tages in the cost of extraction of ore over other mines, and has been able to mine even the low-grade iron at a profit.
What to read after Geology And Mining Industry of Leadville Colorado With Atlas?
You can find similar books in the "Read Also" column, or choose other free books by Samuel Franklin Emmons to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A considerable amount of so-called "Chinese talc" is found throughout the rich ore bodies, doubt- less the product of alteration of stringers of porphyry in the original limestone. South of the dike no considerable quantity of rich ore had been found at the time of examination, as the map shows ; explorations had, AMIE MINE.
473 however, by no means covered all the possible ground in which it might occur, so that the statement, that the southern ore body previously observed does not extend as f...ar east as this, rests on rather negative evidence. In only one point in the southern workings had a raise been made which found the Wash resting directly on the ore horizon. Elsewhere the covering of White Porphyry still remained. The actual width of the outcrop of the ore horizon in this ground is deduced from observations in the adjoining mines.
The workings of the Amie mine have been intelligently and systemat- ically conducted from the very commencement, so that it has had advan- tages in the cost of extraction of ore over other mines, and has been able to mine even the low-grade iron at a profit.
What to read after Geology And Mining Industry of Leadville Colorado With Atlas?
You can find similar books in the "Read Also" column, or choose other free books by Samuel Franklin Emmons to read onlineMoreLess
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