Lithograph by Le Pelletier after J J Roseau, printed by zincography on coated paper. Auguste Baboneau's asphalt mine company had works in La Presta, near Travers, Switzerland, and in Chavaroche, near Annecy, France, as well as in Avenue Richerand, Paris. The first two are shown on either side of a 'locomotive boiler', a steam engine for heating the asphalt with a worker hand-cranking it. In the bottom left and right corners are shown the ingredients of asphalt: barrels of rocks, powder, filler and bitumen.
© Science Museum / Science & Society Picture Library