Aripuanã Zinc Project

Project Website: www.projetoaripuana.com.br

Notes:

  1. CIM definitions were followed for Mineral Resources.
  2. Mineral Resources are reported using a US$46/t Net Smelter Return (NSR) block cut-off value for stratabound material and a US$42/t Net Smelter Return (NSR) block cut-off value for stringer material.
  3. The NSR is calculated based on US$1.26 per lb Zn, US$1.01 per lb Pb, US$3.08 per lb Cu, US$1,471 per ounce Au, and US$21.80 per ounce Ag.
  4. Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability.
  5. Numbers may not add due to rounding.