Rodeo
Mineral Resources Engineering, NI 43-101 Technical Report: Preliminary Economic Assessment, Rodeo Project, Rodeo, Durango, Mexico, May 27, 2020
Tetra Tech, NI 43-101 Technical Report - Mineral Resource Estimate, Jan. 26, 2017
El Quevar
Amec Foster Wheeler E&C Services Inc., NI 43-101 Technical Report on Updated Mineral Resource Estimate, Feb. 26, 2018
Amec Foster Wheeler E&C Services Inc., NI 43-101 Technical Report on Preliminary Economic Assessment, Sept. 4, 2018
Velardeña
Tetra Tech, Preliminary Economic Assessment & NI 43-101 Technical Report, May 8, 2020
Tetra Tech, NI 43-101 Technical Report - Preliminary Economic Assessment, Feb. 20, 2015
Santa Maria
Tetra Tech, NI 43-101 Technical Report - Updated Preliminary Economic Assessment, Sept. 14, 2018