Velardeña operates a poly-metallic underground mine and a 2.0Mt/a ore mill. The project restarted in May 2013 and included an underground mine and a poly-metallic 6kt/d ore concentrator. The capital investment was US$204.0 million. In 2016 Peñoles authorised an expansion of the mill from 6kt/d to 7kt/d ore. Completion of this project was expected for the second half of 2018.