This section is from the book "Scientific American Reference Book. A Manual for the Office, Household and Shop", by Albert A. Hopkins, A. Russell Bond. Also available from Amazon: Scientific American Reference Book.
All the above-mentioned materials were used last year to produce 17,-821,307 tons of pig iron. This makes a column twice the height of the Eiffel Tower, the tallest monument to human skill in the world.
 
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