Germain Sommeillers 18151871 compressed air rock drill used in the Mont Cenis and St Gothard railway tunnels. Sommeiller engineer of Mont Cenis tunnel. Wood engraving, Paris, 1874 Editorial Stock Photo - Afloimages
Germain Sommeiller's (1815-1871) compressed air rock drill used in the Mont Cenis and St Gothard railway tunnels. Sommeiller engineer of Mont Cenis tunnel. Wood engraving, Paris, 1874