Notes

1. Scott Wilson, CPG, President of RDA is responsible for this mineral resource estimate and is an independent Qualified Person as such term is defined by NI 43-101
2. Reasonable prospects of eventual economic extraction were assessed by enclosing the mineralized material in the block model estimate in 3D wireframe shapes that were constructed based upon geological interpretations as well as adherence to a minimum mining unit with geometry appropriate for underground mining.
3. The cutoff grade of 2.9% ZnEq considered parameters of:
   1. Metal selling prices: Au-$2200/oz, Ag-$27/oz, Cu-$4.25/lb., Pb-$0.90/lb., Zn-$1.25/lb.
   2. Recoveries of Au 86.2%, Ag 94.3%, Cu 93.1%, Pb 0%, Zn 95.3%
   3. Costs including mining, processing, general and administrative (G&A).
4. Zinc Equivalent Grade (“ZnEq”) is estimated by the formula: ZnEq = Zn% + ((Cu% * 78.20)+(Pb% * 0)+(Ag opt * 25.46)+(Au opt * 1896.40))/23.83
5. There are no known legal, political, environmental, or other risks that could materially affect the potential development of the mineral resources.
6. Mineral resources are not mineral reserves and do not have demonstrated economic viability.
7. Figures may not add up due to rounding.
8. Tonnages shown in tables 2 and 3 are short tons