Second quarter 2024 compared to second quarter 2023
Production
During the three months ended June 30, 2024, total tonnes milled of 93,687 were 17% lower than in the same period in 2023. Metal production for gold, silver, copper, lead, and zinc decreased by 36%, 9%, 46%, 56%, and 43%, respectively, during the three months ended June 30, 2024 as compared to the same period last year, as a result of the lower tonnes processed and the lower metal grades that was expected and in line with the 2024 mine plan.
Grades & Recoveries
During the three months ended June 30, 2024, all of the ore processed came from the Arista system with an average gold grade of 1.27 g/t and silver grade of 102 g/t, compared to an average gold grade of 1.59 g/t and silver grade of 86 g/t, respectively, for the same period in 2023. For the three months ending June 30, 2024, the average gold grade was 20% lower and average silver grade was 19% higher when compared to the same period in 2023. As shown in the Technical Report Summary for DDGM incorporated by reference in the 2023 Annual Report (the “Technical Report Summary”), the ore grades are generally expected to decline over time in line with the life of mine average shown in the estimates of mineral reserves (as defined by subpart 1300 of Regulation S-K, “Mineral Reserve”) and mineral resources (as defined by subpart 1300 of Regulation S-K, “Mineral Resource”) tables contained therein (the “Mineral Reserve and Mineral Resource Tables”). As grades decline, recoveries are expected to decline as well. Our base metals average grades during the three months ended June 30, 2024 were 0.26% for copper, 1.00% for lead, and 2.59% for zinc. The copper and zinc grades were lower by 30% and lead grades were lower by 39%, as compared to same period in 2023.
Gold and silver recoveries for the three months ended June 30, 2024 were 77.1% and 85.5%, respectively, reflecting a 3% decrease for gold and a 7% decrease for silver over the same period in 2023. Copper, lead, and zinc recoveries for the three months ended June 30, 2024 were 74.7%, 65.8%, and 83.2%, respectively. Recoveries for copper, lead, and zinc in the three months ended June 30, 2024 when compared to the same period in 2023, declined by 6%, 12%, and 2%, respectively. As shown in the Technical Report Summary incorporated by reference in the 2023 Annual Report, future recoveries and grades are expected to align with the life of mine average shown in the Mineral Reserve and Mineral Resource Tables.
Year-to-date 2024 compared to year-to-date 2023
Production
During the six months ended June 30, 2024, total tonnes milled of 192,576 were 16% lower than in the same period in 2023. Metal production for gold, silver, copper, lead, and zinc decreased by 35%, 16%, 31%, 52%, and 42%, respectively, during the six months ended June 30, 2024, as compared to the same period last year, as a result of the lower tonnes processed and the lower metal grades that was expected and in line with the 2024 mine plan.
Grades & Recoveries
During the six months ended June 30, 2024, all of the ore processed came from the Arista system with an average gold grade of 1.59 g/t and silver grade of 95 g/t, compared to an average gold grade of 1.97 g/t and silver grade of 90 g/t, respectively, for the same period in 2023. To date in 2024, the average gold grade was 19% lower and the average silver grade 6% higher. As shown in the Technical Report Summary for DDGM incorporated by reference in the 2023 Annual Report (the “Technical Report Summary”), the ore grades are generally expected to decline over time in line with the life of mine average shown in the estimates of mineral reserves (as defined by subpart 1300 of Regulation S-K, “Mineral Reserve”) and mineral resources (as defined by subpart 1300 of Regulation S-K, “Mineral Resource”) tables contained therein (the “Mineral Reserve and Mineral Resource Tables”). As grades decline, recoveries are expected to decline as well. Our base metals average grades during the six months ended June 30, 2024 were 0.32% for copper, 1.13% for lead, and 2.71% for zinc. The copper, lead, and zinc grades were lower by 14%, 33%, and 29%, respectively, as compared to same period in 2023.