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The iron is produced on the premises from the purest imported ores, and the manufacture of the steel is carried on by the most approved application of the open-hearth system with the Siemens furnace; the chemical and mechanical tests are such as to satisfy the most exacting demands of careful government officials; and the executive ability apparent in all the departments and the evident condition of discipline that pervades the whole establishment inspire confidence in the productions of the labor.
There were quartz crystals gleaming with lumps of free-milling gold, curling masses of silver and copper wire direct from the mines, gold nuggets of unusual size and brilliancy, and specimens of ores from the principal mines not only of that vicinity, but of the West. Observing Darrell's interest in the contents of the case, Mr.
Anybody could see; the zinc and lead ores were disseminated, rich and warm, in the loose rocks of the out-cropping.
That gives me a great big start I won't have to mine the ores and smelt the metals, as would have been necessary otherwise. However, it'll be plenty bad.
Ores from there, assayed in this city, showed them to be exceedingly rich in silver and gold silver predominating. There is an abundance of wood and water in the District. We are glad to know that New York capital has been enlisted in the development of the mines of this region.
In one year and a half from the discovery of gold at Goldfield the output reached four million dollars. These mines of the Nevada deserts excel in the richness and abundance of their ores, while in the future these camps bid fair to outrival in development all other sections of the United States.
Many attempts had been made in by-gone days to concentrate the iron in such ores by water processes, but with only a partial degree of success. The impossibility of obtaining a uniform concentrate was a most serious objection, had there not indeed been other difficulties which rendered this method commercially impracticable.
From the bottom of the furnace the liquid copper is drawn out and allowed to run into moulds where it finally cools. It is then known as copper matte. The copper still contains some impurities, and retains in addition whatever gold and silver may have been present in the ore. Most copper ores carry a small amount of these precious metals.
Those ships that brought colonists were in every instance expected to return to England laden with the commodities of Virginia. At first cargoes of precious ores were looked for. These failing, the Company must take from Virginia what lay at hand and what might be suited to English needs. In 1610 the Company issued a paper of instructions upon this subject of Virginia commodities.
He knew the value of ores, utilized various by-products that had formerly been thrown away, made plans for the betterment of his workers, and once sent a protest to the King against allowing women and children to be employed underground. But the price per ton of his product was out of proportion to the expenses. While other men mined the ore he wrote a book on "Subterranean Vegetation."
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