Mineral Reserves and Resources

Contrast

Mineral Reserves and Resources

Total Proven & Probable Mineral Reserves

Total Proven & Probable Mineral Reserves as at December 31, 2019(1,2)



Tonnage Grade Metal
Mine Category Quantity Mt Zn % Pb % Ag g/t Zn M lbs Pb M lbs Ag K oz
Perkoa Mine Proven & Probable 2.06 12.80 - - 581 - -
Rosh Pinah Mine Proven & Probable 9.79 6.45 1.34 20.68 1,392 289 6,509
Caribou Mine Proven & Probable 2.66 6.61 2.52 75.04 388 148 6,417
Santander Mine Proven & Probable 1.86 4.86 0.39 24.92 199 16 1,487
Total Proven & Probable 16.37 7.10 1.26 27.39 2,560 453 14,413

(1) For additional detail respecting the Mineral Reserve contained zinc, lead and silver grades, see "Detailed Mineral Reserve and Mineral Resource Disclosure" and "Additional Information" within this news release.
(2) The M lbs (million pounds) and K oz (thousand ounces) contained metals is the total Proven + Probable Mineral Reserve estimation of all the mines on a 100% basis. Trevali’s ownership interest is 90% of Perkoa and 90% of Rosh Pinah.

Total Measured & Indicated Mineral Resources

Total Measured & Indicated Mineral Resources as at December 31, 2019(1,2,3)



Tonnage Grade Metal
Project Category Quantity Mt Zn % Pb % Ag g/t Zn M lbs Pb M lbs Ag K oz
Perkoa Mine Measured & Indicated 4.40 12.64 - - 1,223 - -
Rosh Pinah Mine Measured & Indicated 16.11 7.33 1.70 23.48 2,603 604 12,159
Caribou Mine Measured & Indicated 10.46 6.50 2.47 73.11 1,499 570 24,585
Santander Mine Measured & Indicated 3.58 4.89 0.55 29.76 386 43 3,425
Santander Pipe Project Measured & Indicated 3.77 6.67 0.01 12.08 555 1 1,465
Restigouche Project Measured & Indicated 1.08 5.00 3.30 46.30 119 79 1,613
Halfmile Project Measured & Indicated 7.80 6.94 2.35 36.00 1,199 407 8,980
Stratmat Project Indicated 4.70 5.30 2.10 49.00 550 214 7,300
Total Measured & Indicated 51.90 7.11 1.68 35.67 8,134 1,918 59,528

(1) For additional detail respecting the Mineral Resources contained zinc, lead and silver grades, see "Detailed Mineral Reserve and Mineral Resource Disclosure" and "Additional Information" within this news release.
(2) All Mineral Resources referred to in this news release are inclusive of stated Mineral Reserves. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
(3) The M lbs (million pounds) and K oz (thousand ounces) contained metals is the total Measured + Indicated Mineral Resource estimation of all mines and projects on a 100% basis. Trevali’s ownership interest is 90% of Perkoa and 90% of Rosh Pinah

Total Inferred Mineral Resources

Total Inferred Mineral Resources as of December 31, 2019(1,2,3)



Tonnage Grade Metal
Project Category Quantity Mt Zn % Pb % Ag g/t Zn M lbs Pb M lbs Ag K oz
Perkoa Mine Inferred 0.81 8.71 - - 155 - -
Rosh Pinah Mine Inferred 5.54 6.16 1.09 24.05 752 133 4,281
Caribou Mine Inferred 5.31 6.11 2.48 74.64 715 290 12,743
Santander Mine Inferred 1.07 3.93 0.24 24.97 93 6 861
Santander Pipe Project Inferred 1.31 5.37 0.02 7.42 156 1 313
Restigouche Project Inferred 0.58 6.10 4.30 67.83 77 55 1,256
Halfmile Project Inferred 6.50 5.62 1.51 23.00 806 216 4,720
Stratmat Project Inferred 2.40 4.80 2.10 39.00 252 110 3,000
Total Inferred 23.52 5.80 1.56 35.94 3,006 811 27,174

(1) For additional detail respecting the Mineral Resources contained zinc, lead and silver grades, see "Detailed Mineral Reserve and Mineral Resource Disclosure" and "Additional Information" within this news release.
(2) All Mineral Resources referred to in this news release are inclusive of stated Mineral Reserves. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
(3) The M lbs (million pounds) and K oz (thousand ounces) contained metals is the total Inferred Mineral Resource estimation of all mines and projects on a 100% basis. Trevali’s ownership interest is 90% of Perkoa and 90% of Rosh Pinah.