Anibal Pinto Saltpeter Office.

The Pampa salitrera of Chile (1890).

Explosives plant, Calama.

Pampa Unión. Former Bolivian territory. Pampa Unión, in Chile's Antofagasta region, was a thriving town in the late 19th century due to rich saltpeter deposits. Originally under Bolivian sovereignty, the area gained significance before the War of the Pacific (1879-1884), attracting economic development and international interest. At its peak, Pampa Unión was a bustling center for the saltpeter industry. However, the early 20th century saw the industry's decline with the advent of synthetic alternatives, leading to the town's abandonment. Today, Pampa Unión stands as a ghost town, symbolizing the rise and fall of the saltpeter industry and the territorial changes resulting from the War of the Pacific.

Pedro de Valdivia.

Nitroglycerin transport cart. Explosives production plant for the mining industry. Calama, Chile.