English: Three Bessemer converters blowing in Mobile, Alabama, at different stages. From the foreground to the background : beginning with yellow silica sparkles, decarburizing with white-bluish flame, end of blowing with brownish fumes. Painting by John Roderick Dempster MacKenzie.
Français : Trois convertisseurs Bessemer à différents moments du soufflage à Mobile (Alabama). Du premier-plan à l'arrière-plan : début de soufflage avec des projections jaunes de silice ; décarburation avec une grande flamme blanche-bleuâtre ; fin de soufflage avec des fumées brunâtres. Peinture de John Roderick Dempster MacKenzie.
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