Andrew Carnegie：Autobiography of Andrew Carnegie, Additional Excerpt 337

We continued to develop our blast-furnace plant, every new one being a great improvement upon the preceding, until at last we thought we had arrived at a standard furnace. Minor improvements would no doubt be made, but so far as we could see we had a perfect plant and our capacity was then fifty thousand tons per month of pig iron.

Source： https://www.gutenberg.org/ebooks/17976
Locator：Additional excerpt 337 · Verified：2026-10-19 · Verification：Short excerpt

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