Tinka Resources Limited filed an updated independent National Instrument 43-101 Technical Report on the Mineral Resource Estimate for the Ayawilca Property, Department of Pasco, Peru. There are no material differences in the NI 43-101 Technical Report from the information disclosed in the News Release. Part of the Zinc Zone Mineral Resource is now classified as Indicated, incorporating a higher-grade portion of the deposit. In addition, the updated Inferred Mineral Resource is of a similar size and grade to the previous Zinc Zone resource reported in November 2017. The updated Tin Zone Inferred Mineral Resource is also substantially larger. This resources update follows a very successful drilling program, with the Company completing approximately 20,000 metres during 2018. Key Highlights of Updated Mineral Resources at Ayawilca. Indicated Zinc Zone Mineral Resource of 11.7 million tonnes grading 6.9% zinc, 0.16% lead, 84 g/t indium and 15 g/t silver (8.1% zinc equivalent "ZnEq"), containing: 1.8 billion pounds of zinc, 983 tonnes of indium, 5.8 million ounces of silver and 42 million pounds of lead. Inferred Zinc Zone Mineral Resource of 45.0 million tonnes grading 5.6% zinc, 0.23% lead, 67 g/t indium and 17 g/t silver (6.7% ZnEq), containing: 5.6 billion pounds of zinc, 3,003 tonnes of indium, 25.2 million ounces of silver and 230 million pounds of lead. Inferred Tin Mineral Resource of 14.5 million tonnes grading 0.63% tin, 0.21% copper, and 18 g/t silver (0.70% tin equivalent "SnEq"), containing: 201 million pounds of tin, 67 million pounds of copper and 8 million ounces of silver. The Tin Zone and Zinc Zone resources do not overlap. The Mineral Resources have an effective date of November 26, 2018 and are reported above an NSR cut-off value of USD 55/tonne, as estimated by Roscoe Postle Associates Inc. of Toronto, Canada. Other key assumptions, parameters, and methods are: CIM definitions were followed for Mineral Resources. Prior to compositing to two metre lengths, high Sn, In, and Ag values were cut to 4%, 350 g/t to 550 g/t, and 100 g/t to 170 g/t depending on area, respectively. Block model grades within the wireframe models were interpolated by inverse distance cubed. The NSR value was based on estimated metallurgical recoveries, assumed metal prices and smelter terms, which include payable factors, treatment charges, penalties, and refining charges. Density was estimated to be between 3.5 t/m3 and 3.7 t/m3 for the Zinc Zones and 3.9 t/m3 for the Tin Zone. The drill hole pacing within the area assigned as Indicated category commonly ranges from 40 m to 70 m. For the Zinc Zone Metal price assumptions were: USD 1.15/lb Zn, USD 300/kg In, USD 15/oz Ag, and USD 1.00/lb Pb. Metal recovery assumptions were: 90% Zn, 75% In, 60% Ag, and 75% Pb. The NSR value for each block was calculated using the following NSR factors: USD 15.34 per % Zn, USD 4.70 per % Pb, USD 0.18 per gram In, and USD 0.22 per gram Ag. The NSR value was calculated using the following formula: NSR = Zn(%)*USD 15.34+Pb(%)*USD 4.70+In(g/t)*USD 0.18+Ag(g/t)*USD 0.22. The ZnEq value was calculated using the following formula: ZnEq = NSR/US$15.34 For the Tin Zone: Metal price assumptions were: USD 9.00/lb Sn, USD 2.85/lb Cu, and USD 15/oz Ag. Metal recovery assumptions were: 86% Sn, 75% Cu, and 60% Ag. The NSR value for each block was calculated using the following NSR factors: USD 155.21 per % Sn, USD 37.59 per % Cu, and USD 0.22 per gram Ag. For the Tin Zone, the NSR value was calculated using the following formula: USD NSR = Sn(%)*USD 155.21+Cu(%)*USD 37.59+Ag(g/t)*USD 0.22. The SnEq value was calculated using the following formula: SnEq = NSR/USD 155.21.