Keywords: Bethlehem Steel Blast Furnace A drawing.png Bethlehem Steel Etats-Unis au début du 20ème siècle Bethlehem Steel Blast Furnace A drawing United States at the beginning of 20th century 1917 http //babel hathitrust org/cgi/pt id wu 89074783119;view 1up;seq 255 Blast-furnace construction in America p 239 Joseph Esrey Johnson Jr 1870-1919 Custom license marker 2013 06 25 PD-old PD-US Uploaded with UploadWizard Drawings of blast furnaces Bethlehem Plant Blast furnaces Blast furnaces skip hoists |