Andrew Carnegie：Autobiography of Andrew Carnegie, Additional Excerpt 276

The Lucy Furnace became the most profitable branch of our business, because we had almost the entire monopoly of scientific management. Having discovered the secret, it was not long (1872) before we decided to erect an additional furnace. This was done with great economy as compared with our first experiment. The mines which had no reputation and the products of which many firms would not permit to be used in their blast furnaces found a purchaser in us. Those mines which were able to obtain an enormous price for their products, owing to a reputation for quality, we quietly ignored. A curious illustration of this was the celebrated Pilot Knob mine in Missouri. Its product was, so to speak, under a cloud. A small portion of it only could be used, it was said, without obstructing the furnace. Chemistry told us that it was low in phosphorus, but very high in silicon. There was no better ore and scarcely any as rich, if it were properly fluxed. We therefore bought heavily of this and received the thanks of the proprietors for rendering their property valuable.

Source： https://www.gutenberg.org/ebooks/17976
Locator：Additional excerpt 276 · Verified：2026-10-19 · Verification：Short excerpt

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