Mining is no friend of the planet: erosion, deforestation, groundwater contamination, silting, the list goes on. Here's a more direct look at another of its impacts: the human cost.

The Devil's Miner, a documentary by Richard Ladkani and Kief Davidson observes the thousands of miners, hundreds of them children, scouring the silver mines at Cerro Rico, the "rich mountain" outside Potosi, Bolivia.