 | Royal Society of Arts (Great Britain) - 1818 - 998 strani
...method of separating, purifyi ng, and refining copper from the ore, so as . to render it fit for those purposes to which fine copper is now applied, and by a process cheaper than and superior to any hitherto known or in use ; the gold medal, or fifty guineas. Certificates... | |
 | Royal Society of Arts (Great Britain) - 1801 - 1116 strani
...method of separating, purifying, and refining Copper from the Ore, so as to render it fit for the finest purposes to which fine Copper is now applied, and...higher in price; the GOLD MEDAL, or FIFTY GUINEAS. CERTIFICATES that not less than three tons have been so prepared or refined, and a quantity not less... | |
 | 1805 - 632 strani
...method of separating, purifying, and refining copper from the ore, so as to render it fit for the finest purposes to which fine copper is now applied, and by a process superior to any hitherto known or m use, and not higher in price ; the gold medal, or fifty guineas. Certificate! that not less than... | |
 | Royal Society of Arts (Great Britain) - 1815 - 778 strani
...method of separating, purifying, and refining copper from the ore, so as to render it fir for those purposes to which fine copper is now applied, and...process superior to any hitherto known or in use; the gold medal, or fifty guineas, Certificates that not less than three tons have been so prepared... | |
 | Luke Herbert - 1825 - 396 strani
...method of separating, purifying, and refining copper from the ore, so as to render it fit tor those purposes to which fine copper is now applied, and by a process cheaper than and superior to any hitherto known or in use.— The Gold Medal, or Fifty Guineas. REFINING... | |
 | Royal Society of Arts (Great Britain) - 1825 - 946 strani
...than 14 Ibs. of the copper so refined. Refining Zinc from the Ore. 54. For refining zinc from the ore, by a process superior to any hitherto known or in use, and rendering it fit for the purpose of making fine brass ; — the Gold Medal, or Fifty Guineas. Conditions... | |
 | 1826 - 488 strani
...method of separating, purifying, and refining copper irom the ore, so as to render it fit for those purposes to which fine copper is now applied, and by a process cheaper than, and superior to, any hitherto known or in use; — ike Gold Medal, or Fifty Guineas.... | |
 | Perry Fairfax Nursey - 1833 - 502 strani
...reûued, to be produced to the Society. Refining Zinc from the Ore. 8. For refining zinc from the ore, by a process superior to any hitherto known or in use, and rendering it fit for the purpose of making fine brass: — the Gold Isis Medal, or Thirty Pounds. Conditions... | |
 | Monthly literary register - 1809 - 752 strani
...method of separating, purifying, and refining copper from the ore, soa* to render it fit for the finest purposes to which fine copper is now applied, and...in use, and not higher in price; the gold medal, or fiftv guineas. Certificates that not less than three ton* have been so prepared or refined, and & qnanl'ty... | |
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Ore, so as to render it fit for the finest purposes to which fine Copper is now applied, and by a process superior to any hitherto known or in use, and not higher in price; the GOLD MEDAL, or FIFTY GUINEAS. CERTIFICATES... 