Andrew Carnegie：Autobiography of Andrew Carnegie, Additional Excerpt 341

One day he sent us a report of analyses of ore remarkable for the absence of phosphorus. It was really an ore suitable for making Bessemer steel. Such a discovery attracted our attention at once. The owner of the property was Moses Thompson, a rich farmer, proprietor of seven thousand acres of the most beautiful agricultural land in Center County, Pennsylvania. An appointment was made to meet him upon the ground from which the ore had been obtained. We found the mine had been worked for a charcoal blast furnace fifty or sixty years before, but it had not borne a good reputation then, the reason no doubt being that its product was so much purer than other ores that the same amount of flux used caused trouble in smelting. It was so good it was good for nothing in those days of old.

Source： https://www.gutenberg.org/ebooks/17976
Locator：Additional excerpt 341 · Verified：2026-10-19 · Verification：Short excerpt

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