Vista Gold Corp. announced that recent high pressure grinding roll crusher and ore sorting tests on high-grade samples confirm previous test results. The Company also announced its plans to complete fine grinding and leaching tests in the first quarter of 2019 and to follow these results with updated preliminary feasibility study economics in the second quarter of 2019. Additional HPGR and ore sorting tests were completed on two, 2.5 tonne samples from Mt Todd's Batman deposit containing 1.39 and 1.70 grams of gold per tonne respectively. This testing program confirmed two important results: HPGR crushing followed by screening results in increased concentration of gold in the fine fraction, and the small amount of gold lost in the rejected material is proportionally lower when sorting higher-grade material. As with previous tests, the samples were HPGR crushed at the facilities of Thyssen Krupp Industries in Germany and screened at 16 millimeters ("mm"), approximately 5/8 inches. The coarse fraction (+16mm) was sent to the facilities of Tomra Sorting Solutions in Germany, where 2-stage (x-ray transmission and laser) sorting tests were completed using production-sized and commercially available equipment.