Solar evaporation, salt manufacture, Syracuse, New York, USA, 20th century. Artist: Keystone View Company
Solar evaporation, salt manufacture, Syracuse, New York, USA, 20th century. Collecting, draining and hauling salt. Stereoscopic card. Detail
The Cathedral, Marston Salt Mine, Northwich, Cheshire, England, 19th century
The Cathedral, Marston Salt Mine, Northwich, Cheshire, England, showing the pillars of salt that have been left to support the ceiling of the cavern which has been left after the excavation of rock
