Cerro rico, tierra rica
Towering above the city of Potosí, Cerro Rico is an enormous conical mountain and the richest silver field in mining history. It provided the Spanish Empire half of the world's silver during colonial times. Bolivia has recently discovered it also contains half of the world's lithium reserves in the Salar de Uyuni, located also in the Potosí region. The parallel stories of these two unique sites help create a compelling observational mosaic of mining life in Latin America: an elegy to the high plateaus of the Andes mountains and a stunning record of manual labor in southwestern Bolivia.
Starring
It's a documentary movie, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Brazil.