Keywords: Bessemer steel gun tube samples.png Bessemer process No crack appeared procédé Bessemer Aucune fissure n'est apparue http //archive org/details/sirhenrybessemer00bessrich Sir Henry Bessemer F R S An autobiography p 194 1905 Henry Bessemer 1813-1898 PD-old PD-US Images from Sir Henry Bessemer F R S An autobiography by H Bessemer |