Nevada Zinc Corporation announced the production of bench scale high-grade zinc sulfate monohydrate. The sample was produced from the multiphase pilot plant program being conducted by Hazen Research Inc. for the Company's Lone Mountain zinc project.Hazen completed bench scale crystallization work to recover zinc sulfate from purified pregnant leach solution ("PLS"). Evaporation was carried out at 60°C using a rotary evaporator. Approximately 60% of the purified PLS mass was evaporated from the solution, crystallizing a mixture of zinc sulfate heptahydrate and zinc sulfate monohydrate. The crystallized product was dehydrated to zinc sulfate monohydrate at 80°C. The dehydrated zinc sulfate product was identified by x-ray diffraction (XRD) as zinc sulfate monohydrate, with no other phases detected. The product has assayed 97%-99% zinc sulfate monohydrate by titration. The sample was assayed at 37.6% Zn by inductively coupled plasma optical emission spectroscopy ("ICP-OES") and 18.7% total sulfur by combustion (LECO). Ca and Mg assayed 0.01% and 0.03%, respectively. ICP-OES analyses of relevant impurities (As, Cd, Co, Pb, Mo, Co, Ni) were below the reported detection limit for each element (<50 ppm). Additional analyses of impurities are in progress to better define at lower detection limits. While zinc content in commercial zinc sulfate products can vary due to product specifications and applications, the typical zinc grade in zinc sulfate monohydrate is 35.5% Zn.