Lead Ores
Lead Ores
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In our eReader you can find the full English version of the book. Read Lead Ores 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 Lead Ores
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Per cent.
Per cent.
Ounces per ton.
Ounces per ton.
*ossan ....
9'47 21-9 0-50 -ead ore ....
28-0 9-35 12-7 O-2O 'inc ore ....
40-8 7-0 9'7 0-157 x^pper ore 4-4 2-0 ~ 74 SOURCES OF SUPPLY OF LEAD ORES It is estimated that the reserves of zinc-lead ore in this mine total over half a million tons.
Operations on these deposits were extended in 1900, from which date up to 1914 about 200, 000 tons of zinc- lead ore and 2, 500 tons of copper ore, having a total value of approxi- mately 300, 000, were... produced.
The deposits of the Rosebery area [42] are worked by three companies, namely, the Tasmanian Copper Co. , the North Tasmanian Copper Co. , and the Primrose Mining Co. The ore of this district is said to have the following average composi- tion : blende 43-3 per cent. , pyrite 31 per cent. , galena 10-4 per cent. , chalcopyrite 1-2 per cent. , tetrahedrite o-i per cent. ; with 10 oz. Of silver and 3 dwt. Of gold to the ton. Operations are conducted at the Rosebery Mine, on the western slope of Mount Black, where several large and well-defined lodes have been opened up.
What to read after Lead Ores?
You can find similar books in the "Read Also" column, or choose other free books by T C F Thomas Clifford Fitzwilliam Hall to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Per cent.
Per cent.
Ounces per ton.
Ounces per ton.
*ossan ....
9'47 21-9 0-50 -ead ore ....
28-0 9-35 12-7 O-2O 'inc ore ....
40-8 7-0 9'7 0-157 x^pper ore 4-4 2-0 ~ 74 SOURCES OF SUPPLY OF LEAD ORES It is estimated that the reserves of zinc-lead ore in this mine total over half a million tons.
Operations on these deposits were extended in 1900, from which date up to 1914 about 200, 000 tons of zinc- lead ore and 2, 500 tons of copper ore, having a total value of approxi- mately 300, 000, were... produced.
The deposits of the Rosebery area [42] are worked by three companies, namely, the Tasmanian Copper Co. , the North Tasmanian Copper Co. , and the Primrose Mining Co. The ore of this district is said to have the following average composi- tion : blende 43-3 per cent. , pyrite 31 per cent. , galena 10-4 per cent. , chalcopyrite 1-2 per cent. , tetrahedrite o-i per cent. ; with 10 oz. Of silver and 3 dwt. Of gold to the ton. Operations are conducted at the Rosebery Mine, on the western slope of Mount Black, where several large and well-defined lodes have been opened up.
What to read after Lead Ores?
You can find similar books in the "Read Also" column, or choose other free books by T C F Thomas Clifford Fitzwilliam Hall to read onlineMoreLess
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