Biggest changeMINERAL RESOURCES Summary Gold Mineral Resources at End of the Fiscal Year Ended December 31, 2022 (1)(2)(3)(11) Measured Mineral Resources Indicated Mineral Resources Measured + Indicated Mineral Resources Inferred Mineral Resources Coeur Ownership Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Mexico Palmarejo Mine, Mexico (4) 100% 4,030 0.066 267 16,704 0.054 907 20,734 0.057 1,174 5,633 0.067 380 United States Rochester Mine, USA (7) 100% 94,296 0.002 187 15,507 0.002 27 109,803 0.002 214 77,001 0.002 148 Kensington Mine, USA (5) 100% 2,412 0.276 665 1,309 0.293 384 3,721 0.282 1,049 1,246 0.282 351 Wharf Mine, USA (6) 100% 1,166 0.022 26 13,303 0.020 267 14,469 0.020 293 3,149 0.020 63 Lincoln Hill Project, USA (9) 100% 4,642 0.012 58 27,668 0.011 306 32,310 0.011 364 22,952 0.011 255 Wilco Project, USA (10) 100% — — — — — — — — — 25,736 0.021 531 Total Gold 106,546 0.011 1,203 74,491 0.025 1,891 181,037 0.017 3,094 135,717 0.013 1,728 Summary Silver Mineral Resources at End of the Fiscal Year Ended December 31, 2022 (1)(2)(3)(11) Measured Mineral Resources Indicated Mineral Resources Measured + Indicated Mineral Resources Inferred Mineral Resources Coeur Ownership Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Mexico Palmarejo Mine, Mexico (4) 100% 4,030 4.39 17,689 16,704 3.42 57,062 20,734 3.61 74,751 5,633 3.19 17,948 United States Rochester Mine, USA (7) 100% 94,296 0.33 31,452 15,507 0.34 5,332 109,803 0.33 36,784 77,001 0.34 26,151 Lincoln Hill Project, USA (9) 100% 4,642 0.34 1,592 27,668 0.31 8,655 32,310 0.32 10,247 22,952 0.36 8,163 Wilco Project, USA (10) 100% — — — — — — — — — 25,736 0.13 3,346 Canada Silvertip Mine, Canada (8) 100% 680 11.46 7,798 6,375 8.21 52,317 7,055 8.52 60,115 1,873 7.70 14,414 Total Silver 103,648 0.56 58,531 66,254 1.86 123,366 169,902 1.07 181,897 133,195 0.53 70,022 Summary Zinc Mineral Resources at End of the Fiscal Year Ended December 31, 2022 (1)(2)(3)(11) Measured Mineral Resources Indicated Mineral Resources Measured + Indicated Mineral Resources Inferred Mineral Resources Coeur Ownership Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Canada Silvertip Mine, Canada (8) 100% 680 9.9 % 134,462 6,375 9.7 % 1,230,898 7,055 9.7 % 1,365,360 1,873 10.1 % 378,088 Summary Lead Mineral Resources at End of the Fiscal Year Ended December 31, 2022 (1)(2)(3)(11) Measured Mineral Resources Indicated Mineral Resources Measured + Indicated Mineral Resources Inferred Mineral Resources Coeur Ownership Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Canada Silvertip Mine, Canada (8) 100% 680 7.7 % 104,870 6,375 4.8 % 617,279 7,055 5.1 % 722,149 1,873 4.4 % 165,985 31 (1) Certain definitions: The term “resource” means that it is a concentration or occurrence of material of economic interest in or on the Earth’s crust in such form, grade or quantity that there are reasonable prospects for economic extraction.
Biggest change(8) Rounding of short tons, grades, and troy ounces, as required by reporting guidelines, may result in apparent differences between tons, grades, and contained metal contents. 32 MINERAL RESOURCES Summary Gold Mineral Resources at End of the Fiscal Year Ended December 31, 2023 (1)(2)(3)(11) Measured Mineral Resources Indicated Mineral Resources Measured + Indicated Mineral Resources Inferred Mineral Resources Coeur Ownership Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Mexico Palmarejo Mine, Mexico (4) 100% 5,674 0.070 396 15,500 0.060 926 21,174 0.062 1,322 4,207 0.091 381 United States Rochester Mine, USA (7) 100% 110,460 0.002 200 27,170 0.002 47 137,630 0.002 247 135,104 0.002 267 Kensington Mine, USA (5) 100% 1,653 0.289 477 1,278 0.268 342 2,931 0.279 819 1,567 0.248 388 Wharf Mine, USA (6) 100% 1,666 0.024 40 22,150 0.021 458 23,816 0.021 498 7,125 0.021 149 Lincoln Hill Project, USA (9) 100% 4,642 0.012 58 27,668 0.011 306 32,310 0.011 364 22,952 0.011 255 Wilco Project, USA (10) 100% — — — — — — — — — 25,736 0.021 531 Total Gold 124,095 0.009 1,171 93,766 0.022 2,079 217,861 0.015 3,250 196,691 0.010 1,971 Summary Silver Mineral Resources at End of the Fiscal Year Ended December 31, 2023 (1)(2)(3)(11) Measured Mineral Resources Indicated Mineral Resources Measured + Indicated Mineral Resources Inferred Mineral Resources Coeur Ownership Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Tons (000s) Grade (oz./ton) Ounces (000s) Mexico Palmarejo Mine, Mexico (4) 100% 5,674 4.56 25,875 15,500 3.85 59,701 21,174 4.04 85,576 4,207 4.50 18,933 United States Rochester Mine, USA (7) 100% 110,460 0.29 31,587 27,170 0.41 11,237 137,630 0.31 42,824 135,104 0.34 45,959 Lincoln Hill Project, USA (9) 100% 4,642 0.34 1,592 27,668 0.31 8,655 32,310 0.32 10,247 22,952 0.36 8,163 Wilco Project, USA (10) 100% — — — — — — — — — 25,736 0.13 3,346 Canada Silvertip Mine, Canada (8) 100% 734 10.56 7,749 6,418 7.78 49,919 7,152 8.06 57,668 2,345 6.86 16,084 Total Silver 121,510 0.55 66,803 76,756 1.69 129,512 198,266 0.99 196,315 190,344 0.49 92,485 Summary Zinc Mineral Resources at End of the Fiscal Year Ended December 31, 2023 (1)(2)(3)(11) Measured Mineral Resources Indicated Mineral Resources Measured + Indicated Mineral Resources Inferred Mineral Resources Coeur Ownership Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Canada Silvertip Mine, Canada (8) 100% 734 9.9 % 145,703 6,418 10.7 % 1,371,074 7,152 10.6 % 1,516,777 2,345 10.3 % 481,791 Summary Lead Mineral Resources at End of the Fiscal Year Ended December 31, 2023 (1)(2)(3)(11) Measured Mineral Resources Indicated Mineral Resources Measured + Indicated Mineral Resources Inferred Mineral Resources Coeur Ownership Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Tons (000s) Grade (%) Pounds (000s) Canada Silvertip Mine, Canada (8) 100% 734 7.9 % 115,648 6,418 5.1 % 653,008 7,152 5.4 % 768,656 25,736 4.3 % 199,815 33 (1) Certain definitions: The term “resource” means that it is a concentration or occurrence of material of economic interest in or on the Earth’s crust in such form, grade or quantity that there are reasonable prospects for economic extraction.
These internal controls include quality assurance and quality control (“QA/QC”) programs in the collection, analysis, verification, storage, reporting and use of drillhole, assay, metallurgical and other technical and scientific information, including the following: • Third-party fully certified labs are used for assays used in public disclosure or resource models ; • Drill programs include insertion of blank, duplicate, and certified reference materials; • QA/QC program with sufficient results for the analytical programs; 28 • All core and reverse-circulation samples have been cataloged and stored in secure and designated areas on company property; • Data is subject to validation, which includes checks on downhole surveys, collar coordinates, geological data, and assay data; • Prior to use in mineral resource or mineral reserve estimation, the selected data to support estimation are downloaded from the database into a project file and reviewed for improbable entries and high values; • Written procedures and guidelines are used to support estimation methods and approaches; • Completion of annual technical statements on each mineral resource and mineral reserve estimate by qualified persons.
These internal controls include quality assurance and quality control (“QA/QC”) programs in the collection, analysis, verification, storage, reporting and use of drillhole, assay, metallurgical and other technical and scientific information, including the following: • Third-party fully certified labs are used for assays used in public disclosure or resource models; • Drill programs include insertion of blank, duplicate, and certified reference materials; • QA/QC program with sufficient results for the analytical programs; • All core and reverse-circulation samples have been cataloged and stored in secure and designated areas on company property; • Data is subject to validation, which includes checks on downhole surveys, collar coordinates, geological data, and assay data; • Prior to use in mineral resource or mineral reserve estimation, the selected data to support estimation are downloaded from the database into a project file and reviewed for improbable entries and high values; • Written procedures and guidelines are used to support estimation methods and approaches; • Completion of annual technical statements on each mineral resource and mineral reserve estimate by qualified persons.
Stage: Exploration Location: Northern British Columbia, Canada (10 miles south of the Yukon Territory Border) Mine Type: Underground Metals/Mineralization: Silver, Zinc and Lead; carbonate-hosted massive sulfide deposit Product: Concentrate Ownership: 100% Land Position & Mineral Tenure: • Sixty-six (66) contiguous mineral claims containing approximately 39,375 hectares (97,298 acres) and two mining leases containing approximately 1,528 hectares (3,777 acres).
Stage: Exploration Location: Northern British Columbia, Canada (10 miles south of the Yukon Territory Border) Mine Type: Underground Metals/Mineralization: Silver, Zinc and Lead; carbonate-hosted massive sulfide deposit Product: Concentrate Ownership: 100% 29 Land Position & Mineral Tenure: • Sixty-six (66) contiguous mineral claims containing approximately 39,375 hectares (97,298 acres) and two mining leases containing approximately 1,528 hectares (3,777 acres).
Stage: Production Location: Lead, South Dakota, USA Mine Type: Open Pit Heap Leach Metals/Mineralization: Gold and Silver by-product; a structurally controlled disseminated gold deposit Product: Electrolytic Cathodic Sludge Ownership: 100% Land Position & Mineral Tenure • The Wharf Group is comprised of 362 patented lode claims, 35 government lots, 123 subdivided lots, and 59 federal unpatented lode claims.
Stage: Production Location: Lead, South Dakota, USA Mine Type: Open Pit Heap Leach Metals/Mineralization: Gold and Silver by-product; a structurally controlled disseminated gold deposit Product: Electrolytic Cathodic Sludge 28 Ownership: 100% Land Position & Mineral Tenure • The Wharf Group is comprised of 362 patented lode claims, 35 government lots, 123 subdivided lots, and 59 federal unpatented lode claims.
Stage: Production Location: State of Chihuahua, Northern Mexico Mine Type: Underground Metals/Mineralization: Silver and Gold, classified as epithermal deposits and are hosted in multiple veins, breccias, and fractures Product: Doré Ownership: 100% Land Position: 67,279 net acres Mineral Tenure: 71 wholly-owned mining concessions 24 Key Permit Conditions: Authorizations are in place that regulate typical life of mine functions, including production facilities and utilities, mining operations, tailings and waste rock storage, exploration, surface disturbance, land use, vegetation and change in soil use, air emissions, water use, and reclamation.
Stage: Production Location: State of Chihuahua, Northern Mexico Mine Type: Underground Metals/Mineralization: Silver and Gold, classified as epithermal deposits and are hosted in multiple veins, breccias, and fractures Product: Doré Ownership: 100% Land Position: 67,279 net acres Mineral Tenure: 71 wholly-owned mining concessions 25 Key Permit Conditions: Authorizations are in place that regulate typical life of mine functions, including production facilities and utilities, mining operations, tailings and waste rock storage, exploration, surface disturbance, land use, vegetation and change in soil use, air emissions, water use, and reclamation.
Silver and gold, consisting of silver sulfosalt minerals, argentite, silver-bearing tetrahedrite and minor native gold, are contained in zones of multiple quartz veins and veinlets (vein, vein swarms and stockworks) with variable amounts of pyrite Product: Doré Ownership: 100% Land Position & Mineral Tenure Coeur Rochester lands, including the Lincoln Hill and related assets, consist of approximately 43,441 net acres • 1,465 owned and 337 leased Federal unpatented lode claims and 6 owned federal unpatented placer claims, appropriating approximately 29,938 net acres of public land; • 23 patented lode claims, consisting of approximately 392 acres; • Interests owned in approximately 6,929 gross acres of additional real property; and • Certain rights in and to approximately 6,182 acres, held either through lease, letter agreement or license. 25 Key Permit Conditions: The Rochester Mine has in place and operates subject to all necessary environmental permits and licenses from the appropriate local, state, and federal agencies for typical life of mine functions involving exploration, the open pit mines, heap leach pads, processing infrastructure, and all necessary support facilities.
Silver and gold, consisting of silver sulfosalt minerals, argentite, silver-bearing tetrahedrite and minor native gold, are contained in zones of multiple quartz veins and veinlets (vein, vein swarms and stockworks) with variable amounts of pyrite Product: Doré Ownership: 100% Land Position & Mineral Tenure Coeur Rochester lands, including the Lincoln Hill and related assets, consist of approximately 43,441 net acres • 1,465 owned and 347 leased Federal unpatented lode claims and 6 owned federal unpatented placer claims, appropriating approximately 29,942 net acres of public land; • 23 patented lode claims, consisting of approximately 392 acres; • Interests owned in approximately 6,929 gross acres of additional real property; and • Certain rights in and to approximately 6,182 acres, held either through lease, letter agreement or license. 26 Key Permit Conditions: The Rochester Mine has in place and operates subject to all necessary environmental permits and licenses from the appropriate local, state, and federal agencies for typical life of mine functions involving exploration, the open pit mines, heap leach pads, processing infrastructure, and all necessary support facilities.
The environmental effects of the operation were comprehensively evaluated through the National Environmental Policy Act (NEPA) through Environmental Impact Statements. Monitoring programs are in place, and there is an approved reclamation and closure plan that reflects current mining, mitigation, and site facilities.
The environmental effects of the operation were comprehensively evaluated through the National Environmental Policy Act (“NEPA”) through Environmental Impact Statements. Monitoring programs are in place, and there is an approved reclamation and closure plan that reflects current mining, mitigation, and site facilities.
(2) Mineral Resource estimates are reported exclusive of mineral reserves, are current as of December 31, 2022, are reported using definitions in Item 1300 of Regulation S-K and were prepared by the company’s technical staff.
(2) Mineral Resource estimates are reported exclusive of mineral reserves, are current as of December 31, 2023, are reported using definitions in Item 1300 of Regulation S-K and were prepared by the Company’s technical staff.
(3) The Mineral Reserve estimates are current as of December 31, 2022, are reported using the definitions in Item 1300 of Regulation S-K and were prepared by the company’s technical staff.
(3) The Mineral Reserve estimates are current as of December 31, 2023, are reported using the definitions in Item 1300 of Regulation S-K and were prepared by the Company’s technical staff.
Product: Gold Concentrate Ownership: 100% Land Position & Mineral Tenure • The Kensington Group, totaling approximately 3,972 net acres, consists of 51 patented lode and patented mill site claims comprising approximately 766 net acres, 291 Federal unpatented lode claims covering approximately 3,141 net acres, and 13 State of Alaska mining claims covering approximately 95 net acres. • The Jualin Group, totaling approximately 8,366 net acres, is comprised of 23 patented lode and patented mill site claims covering approximately 388 net acres, 444 Federal unpatented lode claims and 75 Federal unpatented mill site claims appropriating approximately 7,814 net acres, a State of Alaska upland mining lease comprising approximately 682 acres, one State of Alaska mining claim comprising approximately three acres and four State-selected mining claims covering approximately 60 acres. • 14 of the 23 patented lode claims cover private surface estate only.
Product: Gold Concentrate Ownership: 100% 27 Land Position & Mineral Tenure • The Kensington Group, totaling approximately 3,972 net acres, consists of 51 patented lode and patented mill site claims comprising approximately 766 net acres, 298 Federal unpatented lode claims covering approximately 3,222 net acres, and 13 State of Alaska mining claims covering approximately 95 net acres. • The Jualin Group, totaling approximately 8,366 net acres, is comprised of 23 patented lode and patented mill site claims covering approximately 388 net acres, 444 Federal unpatented lode claims and 75 Federal unpatented mill site claims appropriating approximately 7,814 net acres, a State of Alaska upland mining lease comprising approximately 682 acres, one State of Alaska mining claim comprising approximately three acres and four State-selected mining claims covering approximately 60 acres. • 14 of the 23 patented lode claims cover private surface estate only.
(3) Assumed metal prices for 2022 estimated Mineral Resources were $25.00 per ounce of silver, $1,800 per ounce of gold, $1.30 per pound of zinc, $1.00 per pound of lead, unless otherwise noted.
(3) Assumed metal prices for 2023 estimated Mineral Resources were $25.00 per ounce of silver, $1,800 per ounce of gold, $1.30 per pound of zinc, $1.00 per pound of lead, unless otherwise noted.
Ore is mined using conventional open pit methods, with gold and silver recovered by heap leaching of crushed open-pit ore placed on pads located within the Rochester mining area. Rochester is currently undergoing an expansion under POA 11.
Ore is mined using conventional open pit methods, with gold and silver recovered by heap leaching of crushed open-pit ore placed on pads located within the Rochester mining area. Rochester is currently undergoing commissioning and ramp-up of an expansion under POA 11.
The centroid location for the Rochester site is 400600 E, 4460300 N and the centroid of Rochester pit is located at 4002045 E, 4460050 N and Nevada Packard open pit is located at 400600E, 4456675E. All coordinates are in Universal Transverse Mercator (WSG 84), Zone 11T.
The centroid location for the Rochester site is 400600 E, 4460300 N and the centroid of Rochester pit is located at 4002045 E, 4460050 N and Nevada Packard open pit is located at 400600 E, 4456675 E. All coordinates are in Universal Transverse Mercator (WSG 84), Zone 11T.
(2) Assumed metal prices for 2022 Mineral Reserves were $21.00 per ounce of silver, $1,600 per ounce of gold, $1.15 per pound of zinc, $0.95 per pound of lead. Except for Kensington at $1,700 per ounce of gold.
(2) Assumed metal prices for 2023 Mineral Reserves were $21.00 per ounce of silver, $1,600 per ounce of gold, $1.15 per pound of zinc, $0.95 per pound of lead, except for Kensington at $1,850 per ounce of gold.
(6) Mineral Resource estimates use the following key input parameters: assumption of conventional open pit mining; reported above a gold cut-off grade of 0.010 oz/ton Au; average metallurgical recovery assumption of 78.7% across all rock types; royalty burden of US$64/oz Au; pit slope angles that vary from 34–50º; mining costs of $2.39/ton mined, process costs of US$11.91/ton processed (includes general and administrative costs).
(6) Mineral Resource estimates use the following key input parameters: assumption of conventional open pit mining; reported above a gold cut-off grade of 0.010 oz/ton Au; average metallurgical recovery assumption of 79.0% across all rock types; royalty burden of US$72/oz Au; pit slope angles that vary from 34–50º; mining costs of $2.44/ton mined, process costs of US$11.71/ton processed (includes general and administrative costs).
(5) Mineral Reserve estimates are tabulated within a confining pit design and use the following input parameters: Rochester oxide variable recovery Au = 77.7-93.7% and Ag = 59.4%; Rochester sulfide variable recovery Au = 15.2-77.7% and Ag = 0.0-59.4%; with a net smelter return cutoff of $3.25/st oxide and US$3.35/st sulfide; Nevada Packard oxide recovery Au = 92.0% and Ag = 61.0%; with a net smelter return cutoff of $4.40/st for oxide, where the NSR is calculated as resource net smelter return (NSR) = silver grade (oz/ton) * silver recovery (%) * (silver price ($/oz) - refining cost ($/oz)) + gold grade (oz/ton) * gold recovery (%) * (gold price ($/oz) - refining cost ($/oz)); variable pit slope angles that approximately average 43º over the life-of-mine.
(5) Mineral Reserve estimates are tabulated within a confining pit design and use the following input parameters: Rochester oxide variable recovery Au = 77.7–85.9% and Ag = 59.4-61.0%; Rochester sulfide variable recovery Au = 15.2–77.7% and Ag = 0.0–59.4%; with a net smelter return cutoff of $3.01/st oxide and US$3.11/st sulfide; Nevada Packard oxide recovery Au = 92.0% and Ag = 61.0%; with a net smelter return cutoff of $5.51/st for oxide, where the NSR is calculated as resource net smelter return (NSR) = silver grade (oz/ton) * silver recovery (%) * (silver price ($/oz) - refining cost ($/oz)) + gold grade (oz/ton) * gold recovery (%) * (gold price ($/oz) - refining cost ($/oz)); variable pit slope angles that approximately average 48º over the life-of-mine.
(7) Mineral Resource estimates are tabulated within a confining pit shell and use the following input parameters: Rochester oxide variable recovery Au = 77.7-93.7% and Ag = 59.4%; Rochester sulfide variable recovery Au = 15.2-77.7% and Ag = 0.0-59.4%; with a net smelter return cutoff of $3.25/st oxide and US$3.35/st sulfide; Nevada Packard oxide recovery Au = 92.0% and Ag = 61.0%; with a net smelter return cutoff of $4.40/st for oxide, where the NSR is calculated as resource net smelter return (NSR) = silver grade (oz/ton) * silver recovery (%) * (silver price ($/oz) - refining cost ($/oz)) + gold grade (oz/ton) * gold recovery (%) * (gold price ($/oz) - refining cost ($/oz)); variable pit slope angles that approximately average 43º over the life-of-mine.
(7) Mineral Resource estimates are tabulated within a confining pit shell and use the following input parameters: Rochester oxide variable recovery Au = 77.7–85.9% and Ag = 59.4%; Rochester sulfide variable recovery Au = 15.2–77.7% and Ag = 0.0–59.4%; with a net smelter return cutoff of $3.01/st oxide and US$3.11/st sulfide; Nevada Packard oxide recovery Au = 92.0% and Ag = 61.0%; with a net smelter return cutoff of $5.51/st for oxide, where the NSR is calculated as resource net smelter return (NSR) = silver grade (oz/ton) * silver recovery (%) * (silver price ($/oz) - refining cost ($/oz)) + gold grade (oz/ton) * gold recovery (%) * (gold price ($/oz) - refining cost ($/oz)); variable pit slope angles that approximately average 48º over the life-of-mine.
Internal controls are discussed where required in the relevant chapters of the technical report summary. The following sub-sections summarize the types of procedures, protocols, guidance and controls that Coeur has in place for its exploration and mineral resource and reserve estimation efforts, and the type of risk assessments that are undertaken.
The following sub-sections summarize the types of procedures, protocols, guidance and controls that Coeur has in place for its exploration and mineral resource and reserve estimation efforts, and the type of risk assessments that are undertaken.
The expansion project includes the construction of a new leach pad, a crushing facility equipped with two high-pressure grinding roll units and a prescreen, a Merrill-Crowe process plant, and related infrastructure to support the extension of Rochester’s mine life and is expected to be completed in mid-2023.
The expansion project included the construction of a new leach pad, a crushing facility equipped with two high-pressure grinding roll units and a prescreen, a Merrill-Crowe process plant, and related infrastructure to support the extension of Rochester’s mine life. Commissioning and ramp-up are expected to be completed in the first half of 2024.
Coordinates for the project centroid are 0494796 E, 652068 N and the Kensington Portal is located at 0494796 E, 6530584 N. All coordinates are in Universal Transverse Mercator (NAD 1983), Zone 8V.
The mine is accessed by a horizontal tunnel and utilizes conventional and mechanized underground mining methods. Coordinates for the project centroid are 0494796 E, 652068 N and the Kensington Portal is located at 0494796 E, 6530584 N. All coordinates are in Universal Transverse Mercator (NAD 1983), Zone 8V.
OPERATING STATISTICS Palmarejo Rochester 2022 2021 2020 2022 2021 2020 Gold produced (oz.) 106,782 109,202 110,608 34,735 27,051 27,147 Silver produced (oz.) 6,708,689 6,820,589 6,269,206 3,061,924 3,158,017 3,174,529 Kensington Wharf 2022 2021 2020 2022 2021 2020 Gold produced (oz.) 109,061 121,140 124,867 79,768 91,136 93,056 Silvertip 2022 2021 2020 Silver produced (oz.) — — 139,287 Zinc produced (lb.) — — 2,459,756 Lead produced (lb.) — — 2,176,847 MINERAL RESERVES AND MINERAL RESOURCES Internal Controls The company’s internal controls are designed to provide reasonable assurance that information and processes utilized in assessing its exploration results as well as mineral resource and reserve estimation are reasonable and in line with industry best practices.
OPERATING STATISTICS Palmarejo Rochester 2023 2022 2021 2023 2022 2021 Gold produced (oz.) 100,605 106,782 109,202 38,775 34,735 27,051 Silver produced (oz.) 6,591,590 6,708,689 6,820,589 3,391,530 3,061,924 3,158,017 Kensington Wharf 2023 2022 2021 2023 2022 2021 Gold produced (oz.) 84,789 109,061 121,140 93,502 79,768 91,136 MINERAL RESERVES AND MINERAL RESOURCES Internal Controls The Company’s internal controls are designed to provide reasonable assurance that information and processes utilized in assessing its exploration results as well as mineral resource and reserve estimation are reasonable and in line with industry best practices.
(7) Mineral Reserve estimates use the following key input parameters: assumption of conventional open pit mining; reported above a gold cut-off grade of 0.010 oz/ton Au; average metallurgical recovery assumption of 79.1%; royalty burden of US$64/oz Au; pit slope angles that vary from 34–50º; mining costs of US$2.39/ton mined, process costs of US$11.91/ton processed (includes general and administrative costs). 30 (8) Rounding of short tons, grades, and troy ounces, as required by reporting guidelines, may result in apparent differences between tons, grades, and contained metal contents.
(7) Mineral Reserve estimates use the following key input parameters: assumption of conventional open pit mining; reported above a gold cut-off grade of 0.010 oz/ton Au; average metallurgical recovery assumption of 79.0%; royalty burden of US$64/oz Au; pit slope angles that vary from 34–50º; mining costs of US$2.44/ton mined, process costs of US$11.71/ton processed (includes general and administrative costs).
(4) Mineral Reserve estimates use the following key input parameters: assumption of conventional longhole underground mining; reported above a variable gold equivalent cut-off grade that ranges from 2.02–2.07 g/t AuEq and an incremental development cut-off grade of 1.05 g/t AuEq; metallurgical recovery assumption of 90.5% for gold and 82.5% for silver; mining dilution assumes 0.4-1.0 meter of hanging wall waste dilution; mining loss of 20% was applied; variable mining costs that range from US$44.74–US$47.13/tonne, surface haulage costs of US$4.01/tonne, process costs of US$29.17/tonne, general and administrative costs of US$12.56/tonne, and surface/auxiliary support costs of US$3.24/tonne.
(4) Mineral Reserve estimates use the following key input parameters: assumption of conventional longhole underground mining; reported above a variable gold equivalent cut-off grade that ranges from 2.11–2.97 g/t AuEq and an incremental development cut-off grade ranging from 1.16–1.55 g/t AuEq; metallurgical recovery assumption of 92.0% for gold and 83.0% for silver; mining dilution assumes 0.4–1.1 meter of hanging/foot wall waste dilution; mining loss of 15% was applied; variable mining costs that range from US$44.72–US$85.71/tonne, surface haulage costs of US$4.92/tonne, process costs of US$32.70/tonne, general and administrative costs of US$14.06/tonne, and surface/auxiliary support costs of US$3.18/tonne.
There are internal and external audit processes for mineral resource and mineral reserve estimation. Mineral resources and mineral reserves are estimates that contain inherent risk and depend upon geologic interpretation and statistical inferences drawn from drilling and sampling analysis, which may prove to be unreliable. See Risk Factors in Item 1A for additional information.
Mineral resources and mineral reserves are estimates that contain inherent risk and depend upon geologic interpretation and statistical inferences drawn from drilling and sampling analysis, which may prove to be unreliable.
(4) Mineral Resource estimates use the following key input parameters: Assumption of conventional longhole underground mining; reported above a variable gold equivalent cut-off grade that ranges from 1.75-1.84 g/t AuEq; metallurgical recovery assumption of 90.5% for gold and 82.5% for silver; variable mining costs that range from US$42.50–US$47.13/tonne, surface haulage costs of US$4.01/tonne, process costs of US$29.17/tonne, general and administrative costs of US$12.56/tonne, and surface/auxiliary support costs of US$3.24/tonne.
(4) Mineral Resource estimates use the following key input parameters: Assumption of conventional longhole underground mining; reported above a variable gold equivalent cut-off grade that ranges from 1.87–2.64 g/t AuEq; metallurgical recovery assumption of 92.0% for gold and 83.0% for silver; variable mining costs that range from US$44.72–US$85.71/tonne, surface haulage costs of US$4.92/tonne, process costs of US$32.70/tonne, general and administrative costs of US$14.06/tonne, and surface/auxiliary support costs of US$3.18/tonne.
(“Coeur Alaska”), are located on the east side of the Lynn Canal about 45 miles north-northwest of Juneau, Alaska. The mine consists of the (i) Kensington Main deposit, (ii) Elmira, and (iii) other nearby deposits and exploration targets. The mine is accessed by a horizontal tunnel and utilizes conventional and mechanized underground mining methods.
USA (Alaska) — Kensington The Kensington underground gold mine and associated milling facilities, operated by our wholly-owned subsidiary, Coeur Alaska, Inc. (“Coeur Alaska”), are located on the east side of the Lynn Canal about 45 miles north-northwest of Juneau, Alaska. The mine consists of the (i) Kensington Main deposit, (ii) Elmira, and (iii) other nearby deposits and exploration targets.
(6) Mineral Reserve estimates use the following key input parameters: assumption of conventional underground mining; gold price of $1700/oz; reported above a gold cut-off grade of 0.133-0.135 oz/st Au; metallurgical recovery assumption of 94%; gold payability of 97.5%; mining dilution varies from 15-23%; mining loss of 5% was applied; variable mining costs that range from US$87.13–90.00/ton mined; process costs of US$54.38/ton processed; general and administrative costs of US$54.76/ton processed; and concentrate refining and shipping costs of US$88.39/oz sold.
(6) Mineral Reserve estimates use the following key input parameters: assumption of conventional underground mining; gold price of $1,850/oz; reported above a gold cut-off grade of 0.135 oz/st Au; metallurgical recovery assumption of 93.5%; gold payability of 97.5%; mining dilution of 20%; mining loss of 12% was applied; mining costs of US$103.67/ton mined; process costs of US$55.06/ton processed; general and administrative costs of US$55.37/ton processed; Sustaining capital US$4.50/ton processed; and concentrate refining and shipping costs of US$108.67/oz sold.
(5) Mineral Resource estimates use the following key input parameters: assumption of conventional longhole underground mining; reported above a variable gold cut-off grade that ranges from 0.125–0.191 oz/ton Au; metallurgical recovery assumption of 94%; gold payability of 97.5%, variable mining costs that range from US$87.13–175.48/ton mined; process costs of US$54.38/ton processed; general and administrative costs of US$54.76/ton processed; and concentrate refining and shipping costs of US$88.39/oz sold.
(5) Mineral Resource estimates use the following key input parameters: metal price of $2,000 per ounce gold, assumption of conventional longhole underground mining; reported above a variable gold cut-off grade of 0.124 oz/ton Au; metallurgical recovery assumption of 93.5%; gold payability of 97.5%, mining costs of US$103.67/ton mined; process costs of US$55.06/ton processed; general and administrative costs of US$55.37/ton processed; Sustaining capital US$4.50/ton processed; and concentrate refining and shipping costs of US$108.67/oz sold.
The mineral estate to these 14 patented lode claims is owned by the State of Alaska, the mineral rights to which are secured by a State of Alaska upland mining lease • The Company controls properties comprising the Jualin Group, under a lease agreement with Hyak Mining Company, which is valid until August 5, 2035 and thereafter, provided mining and production are actively occurring within and from the leased premises. 26 Key Permit Conditions: The Kensington Mine has in place and operates subject to all necessary environmental permits and licenses from the appropriate local, state, and federal agencies for typical life of mine functions involving mine operations and production/processing facilities and infrastructure, tailings and waste rock storage, exploration, surface disturbance, air emissions, water use, marine transport, and reclamation.
Key Permit Conditions: The Kensington Mine has in place and operates subject to all necessary environmental permits and licenses from the appropriate local, state, and federal agencies for typical life of mine functions involving mine operations and production/processing facilities and infrastructure, tailings and waste rock storage, exploration, surface disturbance, air emissions, water use, marine transport, and reclamation.
These technical statements include evaluation of modifying and technical factors, incorporate available reconciliation data, and are based on a cashflow analysis; and • Internal reviews of block models, mineral resources and mineral reserves using a “layered responsibility” approach with qualified person involvement at the site and corporate levels. 29 Development of our mineral resource and mineral reserve estimates use tools and processes such as mine design, scheduling and geostatistical tools that conform to industry best practices and are regularly reviewed and reconciled by internal and external parties.
These technical statements include evaluation of modifying and technical factors, incorporate available reconciliation data, and are based on a cashflow analysis; and • Internal reviews of block models, mineral resources and mineral reserves using a “layered responsibility” approach with Qualified Person involvement at the site and corporate levels. 30 Internal controls are discussed where required in the relevant chapters of the technical report summary.
(“Wharf”) and Golden Reward Mining Limited Partnership (“Golden Reward”), is located in the northern Black Hills of western South Dakota, approximately four miles southwest of the city of Lead, South Dakota. Coordinate for the project centroid are 44°20’03”N Latitude, 103°50’06”W Longitude and the Wharf Mine coordinates are 44°20’39”N Latitude, 103°51’02”W Longitude. All coordinates are in Universal Transverse Mercator (WSG 84).
USA (South Dakota) — Wharf The Wharf mine, operated by our wholly-owned subsidiaries, Wharf Resources (U.S.A.) Inc. (“Wharf”) and Golden Reward Mining Limited Partnership (“Golden Reward”), is located in the northern Black Hills of western South Dakota, approximately four miles southwest of the city of Lead, South Dakota.
Other: A portion of the Palmarejo complex is subject to a gold stream agreement with a subsidiary of Franco Nevada Corporation and related property encumbrances USA (Nevada) — Rochester The Rochester mine and associated heap leach facilities, operated by our wholly-owned subsidiary, Coeur Rochester, Inc.
Coeur Mexicana is subject to other royalty agreements for which there are no mineral resources or mineral reserves associated with them in the current life-of-mine plan. USA (Nevada) — Rochester The Rochester mine and associated heap leach facilities, operated by our wholly-owned subsidiary, Coeur Rochester, Inc.
Monitoring programs are in place, and there is an approved reclamation and closure plan that reflects current mining, mitigation, and site facilities.
Monitoring programs are in place, and there is an approved reclamation and closure plan that reflects current mining, mitigation, and site facilities. Other: • A security interest in the Wharf mine has been granted in favor of the lenders under the RCF. • Wharf is obligated to pay a royalty related to a mineral lease on 34 patented lode claims.
In total, the Silvertip mine covers an area of approximately 40,904 hectares (101,076 acres) Other: • Suspended operating activities in February 2020; ongoing exploration and technical work to evaluate and support a potential expansion and restart • Certain royalty interests have been granted with respect to the Silvertip property OTHER PROPERTIES The Company has interests in several other exploration-stage properties in North America, as well as leased or owned real property for office space.
In total, the Silvertip mine covers an area of approximately 40,904 hectares (101,076 acres) Other: • Suspended operating activities in February 2020; ongoing exploration and technical work to evaluate and support a potential expansion and restart • Silvertip is obligated to pay a 2.5% net smelter return royalty payable to the royalty holder on all mineral products produced from the Silvertip property, payable quarterly. • Silvertip is party to an agreement with the Kaska Nation which, among other things, provides for annual payments to the Kaska Nation calculated based on the financial performance of the Silvertip property and the average price of silver for the relevant calendar year.
Other: • A security interest in the Wharf mine has been granted in favor of the lenders under the RCF • Certain royalty interests have been granted with respect to the Wharf property 27 MINING PROJECTS Canada (British Columbia) — Silvertip The Silvertip silver-zinc-lead exploration property owned by our wholly-owned subsidiary, Coeur Silvertip Ltd.
This royalty encumbers the mineral estate, including the Precambrian Mineral Estate, of much of the lands held by Wharf. • Wharf is party to other royalty agreements for which there are no mineral resources or mineral reserves associated with them in the current life-of-mine plan EXPLORATION PROJECTS Canada (British Columbia) — Silvertip The Silvertip silver-zinc-lead exploration property owned by our wholly-owned subsidiary, Coeur Silvertip Ltd.