ScientificAmerican1903-09-26.jpg Scientific American 1903-06-20ThumbnailsScientific American 1903-12-12aScientific American 1903-06-20ThumbnailsScientific American 1903-12-12aScientific American 1903-06-20ThumbnailsScientific American 1903-12-12aScientific American 1903-06-20ThumbnailsScientific American 1903-12-12aScientific American 1903-06-20ThumbnailsScientific American 1903-12-12a
The Bessemer copper process. Casting the final product into molds. Details of converter air tube and chest. Water-jacket furnace. First blow, partial removal of iron and sulphur.



Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past

Restoration by: magscanner