Careers in Mining Geology And Management University Governance And Teaching T
Careers in Mining Geology And Management University Governance And Teaching T
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In our eReader you can find the full English version of the book. Read Careers in Mining Geology And Management University Governance And Teaching T 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 Careers in Mining Geology And Management University Governance And Teaching T
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I know the impression grew that the Homestake was a great low-grade mine. It was profitable even when mined that way, but it became much more so when the ore was mined more selectively. That made it a relatively high-grade mine, and greatly increased profits But for years they failed to recognize just how the gold was distri buted in the folded rocks. They simply mined everything that came, so the ore that went to the mill was so diluted that the average grade in gold was very low. Even so, the... operation was profitable, but they were turning out a small fraction of the gold that the mills could have produced if mining had been strictly confined to where the gold was.
N: Would their technology at that time have permitted this sort of selec tive mining?
169 McL: Probably not. That is, the geology was quite obscure. It took a lot of very careful mapping and study by a succession of geologists to know just how gold occurs and how the ore bodies are distributed. They are in ancient sedimentary rocks that are very tightly folded and, to use the geological term, metamorphosed.
What to read after Careers in Mining Geology And Management University Governance And Teaching T?
You can find similar books in the "Read Also" column, or choose other free books by Donald H Donald Hamilton Mclaughlin to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
I know the impression grew that the Homestake was a great low-grade mine. It was profitable even when mined that way, but it became much more so when the ore was mined more selectively. That made it a relatively high-grade mine, and greatly increased profits But for years they failed to recognize just how the gold was distri buted in the folded rocks. They simply mined everything that came, so the ore that went to the mill was so diluted that the average grade in gold was very low. Even so, the... operation was profitable, but they were turning out a small fraction of the gold that the mills could have produced if mining had been strictly confined to where the gold was.
N: Would their technology at that time have permitted this sort of selec tive mining?
169 McL: Probably not. That is, the geology was quite obscure. It took a lot of very careful mapping and study by a succession of geologists to know just how gold occurs and how the ore bodies are distributed. They are in ancient sedimentary rocks that are very tightly folded and, to use the geological term, metamorphosed.
What to read after Careers in Mining Geology And Management University Governance And Teaching T?
You can find similar books in the "Read Also" column, or choose other free books by Donald H Donald Hamilton Mclaughlin to read onlineMoreLess
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