Humberstone and Santa Laura Saltpeter Works are two former saltpeter refineries located in northern Chile. They were declared a UNESCO World Heritage Site in 2005, as a testament to the historical imp
Industrial sector of Humberstone Saltpeter Works
View of Humberstone
Exterior of Humberstone Theater
Interior of Humberstone Theater
Sodium nitrate
Videos
Sodium nitrate is the chemical compound with the formula NaNO3. This alkali metal nitrate salt is also known as Chile saltpeter to distinguish it from ordinary saltpeter, potassium nitrate. The minera
Humberstone and Santa Laura Saltpeter Works
…Humberstone and Santa Laura Saltpeter Works are two former saltpeter refineries located in northern Chile. They were declared a UNESCO World Heritage Site in 2005, as a testament to the historical importance of saltpeter…
Dusičnan sodný
Advertisement for sodium nitrate fertilizer from Chile on a wall of a village in the Algarve area of Portugal
Mines of Chile, green is sodium nitrate area