Spanish journalist Samanta Villar Fans spent 21 days working in an artesanal tin mine in Bolivia in 2009. She filmed it for her programme 21 Days.
The full programme can be seen on Facebook at: https://www.facebook.com/samantavillarfans/videos/1183636485105974/UzpfSTM2Njc2NzkxNjk4NzU5NjpWSzoyNjk2Nzk1MjkzNjY5NDM3/