Additional High-Grade Results From The 2021 Infill Drill Program At The Arctic Project

VANCOUVER - Trilogy Metals Inc. announced the fifth and final set of infill drilling results from the 2021 summer field season at the Arctic Project, part of the Upper Kobuk Mineral Projects (UKMP) located in Northwestern Alaska managed by Ambler Metals LLC, the joint venture operating company equally owned by wholly owned subsidiaries of Trilogy and South32 Limited. The 2021 Arctic drill program included 4,131 meters of diamond drilling, comprising 18 holes, that were designed to convert part of the resources from the Indicated category to the Measured category, and provide material for metallurgical testing and geotechnical information. The assay results are for the remaining nine infill/metallurgical drill holes from the 2021 summer field season.

Highlights based on a cut-off grade of 0.5% copper equivalent, significant zones of high-grade copper, zinc, lead, gold, and silver mineralization were intersected, including: Hole AR21-0190 intersected six mineralized intervals, including 19.50 meters of 4.75% copper, 7.83% zinc, 2.04% lead, 1.12 g/t gold and 87.93 g/t silver for a copper equivalent grade of 9.81%; 13.89 meters of 3.46% copper, 2.86% zinc, 0.10% lead, 0.26 g/t gold and 25.65 g/t silver for a copper equivalent grade of 4.94%; and 2.08 meters of 10.18% copper, 9.46% zinc, 1.53% lead, 4.51 g/t gold and 138.92 g/t silver for a copper equivalent grade of 18.26%.

Hole AR21-0189 intersected two mineralized intervals, including 10.42 meters of 6.78% copper, 13.14% zinc, 2.36% lead, 0.42 g/t gold and 102.65 g/t silver for a copper equivalent grade of 13.58%. Hole AR21-0187 intersected three mineralized intervals, including 6.83 meters of 6.57% copper, 9.69% zinc, 1.58% lead, 0.78 g/t gold and 86.95 g/t silver for a copper equivalent grade of 11.93%. Hole AR21-0186 intersected seven mineralized intervals, including 21.18 meters of 2.74% copper, 3.45% zinc, 0.89% lead, 0.88 g/t gold and 45.02 g/t silver for a copper equivalent grade of 5.26%; 10.07 meters of 3.53% copper, 2.31% zinc, 0.38% lead, 0.59 g/t gold and 59.40 g/t silver for a copper equivalent grade of 5.41%; and 6.68 meters of 3.18% copper, 3.24% zinc, 0.78% lead, 0.65 g/t gold and 68.99 g/t silver for a copper equivalent grade of 5.66%.

Hole AR21-0183 intersected three mineralized intervals, including 7.10 meters of 7.10% copper, 6.51% zinc, 0.38% lead, 0.19 g/t gold and 54.97 g/t silver for a copper equivalent grade of 10.23%. Hole AR21-0180 intersected eight mineralized intervals, including 8.90 meters of 2.20% copper, 2.55% zinc, 0.46% lead, 0.39 g/t gold and 34.61 g/t silver for a copper equivalent grade of 3.84%; and 7.07 meters of 2.38% copper, 1.27% zinc, 0.24% lead, 0.09 g/t gold and 18.28 g/t silver for a copper equivalent grade of 3.15%.

Hole AR21-0178 intersected six mineralized intervals, including 4.60 meters of 3.53% copper, 1.37% zinc, 0.10% lead, 0.13 g/t gold and 18.33 g/t silver for a copper equivalent grade of 4.31%. Hole AR21-0185 intersected four mineralized intervals, including 7.47 meters of 4.28% copper, 6.71% zinc, 1.26% lead, 0.37 g/t gold and 58.17 g/t silver for a copper equivalent grade of 7.92%.

Tony Giardini, President and CEO said, "These latest drilling results serve to reinforce that the Arctic deposit is truly unique given the very high grades and consistency of mineralization within the metalliferous horizons. All nine holes in this press release have exceptional high grades of not only copper but also zinc, lead, silver and gold. The polymetallic nature of the Arctic deposit, and the exploration upside in the surrounding 181,000-hectare land package, truly makes this an exceptional project which, we believe, has the potential to play a significant role in supplying the United States economy with a domestic stable, environmentally safe supply of critical and green metals for many years."