Imanjen13, that is a good question the deserves a good answer. The hill of silver still contains veins that have not been mined, according to COMIBOL and supposedly confirmed by Behre Dolbear. The bulk of the silver ore has been taken out of Cerro Rico over the last 400+ years but there is still enough ore in the hill that can me mined efficiently by a small operation such as FMNJ.
And, according to FMNJ, there is a large amount of silver ore to be mined out of the tailings project at Pulacayo.
That's why I'm still in FMNJ.
Trueheart