Chimeneas de Labrar, Copper smelting chimneys in Freirina, Chile.

Chimeneas de Labrar consists of three brick chimneys built in 1846, each with a square base and a metal frame, rising about 18 meters. The refractory bricks and lime mortar came from England. Slag fields and the ruins of the workers' settlement surround them.

In 1830 the French engineer Carlos S. Lambert founded a smelting plant with reverberatory furnaces in Atacama. By 1871 about 90 such furnaces operated in Chile, producing 39,000 tons of fine copper. The Labrar works closed around 1895 as ore grades fell and US competition grew.

These chimneys come from an era when local copper production made Chile one of the world's leading suppliers of the metal. Visitors can still see traces of this industrial past that shaped the region's identity.

The site is located south of Freirina in a dry area and is easy to reach during daytime hours. Visitors should bring water and sun protection, as there is little shade on-site.

The furnaces were later dismantled so their English-made refractory bricks could be reused, which is why only the three chimneys survive. The slag field was so large that it covered much of the surrounding area, and in 1903 some 4,450 tonnes of copper were smelted at an average grade of 14%.