Gold in placer. Placer mining is a type of open cast mining in which minerals are extracted from alluvial,rather than from subterranean,deposits | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Svensson, Kaj R. |
Taille de l’image : | 3488 px × 4650 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |