 | Joseph Archer - 1801 - Počet stránok 320
...twelve cwt. of lead from each ton of ore, and about twenty-four ounces of filver from each ton of lead. There are two or three veins of lead ore in the quarry,...all of them feeming to take their courfe into the commons : upon one of thefe veins in the commons, fome miners, in the' year 1769, were at work, and... | |
 | Joseph Archer - 1801 - Počet stránok 322
...twelve cwt. of lead from each ton of ore, and about twenty-four ounces of filver from each ton of lead. There are two or three veins of lead ore in the quarry,...all of them feeming to take their courfe into the commons : upon one of thefe veins in the commons, fome miners, in the year 1769, were at work, and... | |
 | Hely Dutton - 1802 - Počet stránok 368
...about eighteen months, fixty or feventy tons of lead ore, which yielded, about twelve hundred of lead from each ton of ore, and about twenty-four ounces...thefe veins in the commons, fome miners in the year 1 769 were at work, and raifed upwards of ten tons of ore, which they difpofed of, when wafhed, to... | |
 | John D'Alton - 1838 - Počet stránok 960
...each ton of ore, and about twenty- four ounces of silver from each ton of lead. There are, he adds, two or three veins of lead ore in the quarry, all of them seeming to take their course in the commons. Kilmainham gave the title of Baron to the family of Wenman,... | |
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Jones's quarry, there were raifed, in the years 1767 and 1768, in the fpace of about eighteen months, fixty or feventy tons of lead ore, which yielded, about twelve hundred of lead from each ton of ore, and about twenty-four ounces of filver from each... 