Sewell Mining Town

Sewell is an uninhabited Chilean mining town located on the slopes of the Andes in the commune of Machalí in Cachapoal Province, Libertador General Bernardo O'Higgins Region, at an altitude of between 2,000 and 2,250 metres. In 2006, it was designated as a UNESCO World Heritage Site. It is known as a former company town, developed by Braden Copper Company for housing the workers associated with the operations of El Teniente, the largest underground copper mine in the world.

At the town's peak in 1960, some 16,000 people lived here. After the government acquired a majority interest in the mine, and even more so after copper mining was nationalized in 1971, the government company moved workers into the valley. It built the Copper Highway to provide commuting access for them to the mine and related operations.