Extracting sulphur. 19th Century artwork of workers shovelling sulphur ore into kilns. Heating the ore melts the sulphur,which is collected in pools. Image from 'La Science Illustree' Louis Figuier (1895) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 5447 px × 3862 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |