Vast numbers of Chinese workers were employed in the construction of the US transcontinental railroad through the Sierra Nevada in the 19th century. Snowsheds, visible on the right and left, were used to keep avalanches from blocking the line. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source |
Taille de l’image : | 3300 px × 2231 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |