ROAD TOWN, British Virgin Islands, Dec. 08, 2025 (GLOBE NEWSWIRE) -- Aura Minerals Inc. (NASDAQ: AUGO, B3: AURA33) (“Aura” or the “Company”) is pleased to announce the results of the Feasibility Study for the Era Dorada Project (“Era Dorada” or “Project”, which project was previously known as the Cerro Blanco Project) prepared in accordance with S-K 1300. Era Dorada will be an underground gold mine with anticipated production of 111 koz GEO for the first 4 years of full production with additional potential production upside. The technical report (the “Technical Report”) titled “Feasibility Study for the Era Dorada Project, located in Jutiapa, Guatemala, near the town of Asunción Mita and border with El Salvador” was prepared by Ausenco and Snowden Optiro (Brazil).In January 2025, Aura completed the acquisition of Bluestone Resources Inc. (“Bluestone”), which was the 100% owner of Era Dorada (or Cerro Blanco as it was known then). Please see our press release dated January 13, 2025, for additional information on the acquisition.

英屬維爾京羣島羅德鎮，2025年12月8日（GLOBE NEWSWIRE）——Aura Minerals Inc.（納斯達克：AUGO，B3：AURA33）（“Aura” 或 “公司”）很高興地宣佈根據 S-K 1300 編制的 Era Dorada 項目（“Era Dorada” 或 “項目”，該項目之前稱為 Cerro Blanco 項目）的可行性研究結果。Era Dorada 將是一座地下金礦，預計在全面生產的前四年生產 111,000 盎司黃金當量（koz GEO），並具有額外的潛在生產上行空間。題為 “位於危地馬拉 Jutiapa，靠近 Asunción Mita 鎮和與薩爾瓦多接壤的 Era Dorada 項目可行性研究” 的技術報告（“技術報告”）由 Ausenco 和 Snowden Optiro（巴西）編制。2025 年 1 月，Aura 完成了對 Bluestone Resources Inc.（“Bluestone”）的收購，Bluestone 是 Era Dorada（或當時稱為 Cerro Blanco）的 100% 所有者。有關收購的更多信息，請參見我們2025年1月13日的新聞稿。

Highlights:

亮點：

Exclusive Indicated Mineral Resources of 523 thousand GEO, assuming 2.46 million tonnes at 6.61 grams per tonne gold equivalent.
Proven and Probable Mineral Reserves of 1.75 million GEO, assuming 8.75 million tonnes at 6.23 grams per tonne gold equivalent.
Total production of approximately 1.75 million GEO over 16.8 years Life of Mine (“LOM”).
Average production of approximately 111koz GEO for the first 4 years.
Total initial implementation capex of approximately US$382million with a payback in approximately 2.82 years after the beginning of the operation.
After-tax Net Present Value (“NPV”) of US$1,344.5 million when using the weighted average consensus gold prices for the projected period of US$ 3,177 per ounce.
After-tax Project IRR of 35.6% when using the weighted average consensus gold prices for the projected period.
US$993/oz average Cash Cost and 1,178/Oz AISC cost.

獨佔指示礦產資源為 523,000 盎司黃金當量，假設為 246 萬噸，金當量為每噸 6.61 克。
已探明和可採礦產儲量為 175 萬盎司黃金當量，假設為 875 萬噸，金當量為每噸 6.23 克。
在 16.8 年的礦山生命週期內，總生產量約為 175 萬盎司黃金當量（“LOM”）。
前四年的平均生產量約為 111,000 盎司黃金當量。
初始實施資本支出約為 3.82 億美元，預計在運營開始後約 2.82 年內回本。
使用加權平均共識金價（每盎司 3,177 美元）計算的税後淨現值（“NPV”）為 13.445 億美元。
使用加權平均共識金價計算的税後項目內部收益率（IRR）為 35.6%。
平均現金成本為 993 美元/盎司，綜合維持成本（AISC）為 1,178 美元/盎司。

Main assumptions used for the base:

用於基礎的主要假設：

Gold price (per ounce): US$ 3,177
Silver price (per ounce): US$ 37.2
Exchange average rate (GTC/USD): 7.6
Guatemalan Government Royalty: (% of gross revenues): 5%
Income taxes: 25%
Discount rate: 5%

黃金價格（每盎司）：3,177 美元
白銀價格（每盎司）：37.2 美元
匯率平均值（GTC/USD）：7.6
危地馬拉政府特許權使用費：（毛收入的百分比）：5%
所得税：25%
折現率：5%

Rodrigo Barbosa, President and CEO of Aura, stated: "With Borborema now in commercial production and the MSG acquisition successfully closed, we are pleased to publish the Feasibility Study (FS) for Era Dorada – the project we acquired earlier this year. The new FS, incorporating new metal prices and an optimized mine plan, delivers Reserves of 1.75 million GEO, average annual production of 111,000 GEO during the first four years, an after-tax leveraged IRR of 68%, an after-tax NPV of US$ 2.17 billion at spot prices $ 4,200 / Oz, and very competitive AISC in the first industry quartile at US$1,178/oz during the LOM. This fully licensed underground project requires a manageable Initial Capex of US$ 382 million. We are working closely with local authorities and government agencies to advance Era Dorada consistent with applicable environmental and social standards, aligned with our Aura 360 culture. This Feasibility Study is another clear example of our disciplined growth strategy in action – and more projects are in the pipeline.”

Aura 的總裁兼首席執行官 Rodrigo Barbosa 表示：“隨着 Borborema 現在進入商業生產，MSG 收購成功完成，我們很高興發佈 Era Dorada 的可行性研究（FS）——這是我們今年早些時候收購的項目。新的可行性研究結合了新的金屬價格和優化的礦山計劃，提供了 175 萬盎司黃金當量的儲量，前四年平均年產 111,000 盎司黃金當量，税後槓桿內部收益率為 68%，在現貨價格 4,200 美元/盎司下，税後淨現值為 21.7 億美元，並且在礦山生命週期內的綜合維持成本在行業的前四分之一，約為 1,178 美元/盎司。這個完全獲得許可的地下項目需要可控的初始資本支出 3.82 億美元。我們正在與地方當局和政府機構密切合作，以符合適用的環境和社會標準推進 Era Dorada，符合我們的 Aura 360 文化。這項可行性研究是我們有序增長戰略的又一個明確例證——更多項目正在籌備中。”

Era Dorada Project overview

Era Dorada 項目概述

The Project is located in southeast Guatemala, in the Department of Jutiapa, approximately 160 km by road from the capital, Guatemala City and approximately 9 km west of the border with El Salvador. The nearest town to the Project is Asunción Mita, a community of about 18,500 people situated approximately 7 km west of the Project. The exploitation license covers 15.25 km2 and lies entirely in the municipality of Asunción Mita. Era Dorada is not considered to be a property material to Company for purposes of S-K 1300.

該項目位於危地馬拉東南部，位於 Jutiapa 省，距離首都危地馬拉城約 160 公里，距離與薩爾瓦多的邊界約 9 公里。項目最近的城鎮是 Asunción Mita，約有 18,500 人口，位於項目西南約 7 公里處。開採許可證覆蓋 15.25 平方公里，完全位於 Asunción Mita 市內。根據 S-K 1300 的規定，Era Dorada 不被視為對公司重要的資產。

The Era Dorada Project site is accessible year-round via the Pan-American Highway (CA1) through Asunción Mita, with flat to rolling hill topography. The climate is tropical dry forest, with elevations of 450–560 masl, a wet season from May to October, 1,350 mm annual rainfall, temperatures ranging from 10°C to 41°C, 2,530 mm annual pan evaporation, and 62% average humidity. The site is near communities, including Asunción Mita (18,500 population). No prior mining exists in the area, but the closure of Goldcorp’s Marlin Mine in 2017 provides access to trained Guatemalan labor. The project plans to hire locally, with training costs included in the budget.

Era Dorada 項目現場通過泛美公路（CA1）全年可達，地形為平坦至起伏的丘陵。氣候為熱帶乾燥森林，海拔 450-560 米，濕季為 5 月至 10 月，年降雨量為 1,350 毫米，温度範圍為 10°C 至 41°C，年蒸發量為 2,530 毫米，平均濕度為 62%。該地點靠近社區，包括 Asunción Mita（18,500 人口）。該地區沒有先前的採礦活動，但 2017 年 Goldcorp 的 Marlin 礦關閉後，提供了受過培訓的危地馬拉勞動力。項目計劃在當地招聘，培訓費用已包含在預算中。

Summary of Key Results for the Era Dorada Feasibility Study

Era Dorada 可行性研究的關鍵結果摘要


ERA DORADA GOLD PROJECT 1	Years 1- 4	Life of Mine (16.8 years)
Average Plant Feed Grade (g Au/t & g Ag/t)	7.6 g/t Au & 28.3 g/t Ag	6.0 g/t Au & 28.2 g/t Ag
Weighted Average Annual Gold Production (koz)	111	104
Average Recovery (%)	96% for Au & 85% Ag	96% for Au & 85% Ag
Total Payable Gold (koz gold)	428	4,852
Average Cash Costs (US$/oz)	1,107	993.1
Average AISC2 (US$/oz)	1,617	1,178


ERA DORADA GOLD PROJECT 1	1-4 年	礦山生命週期（16.8 年）
平均礦石進料品位（克/噸金及克/噸銀）	7.6 克/噸金及 28.3 克/噸銀	6.0 克/噸金及 28.2 克/噸銀
加權平均年金生產（盎司）	111	104
平均回收率（%）	黃金 96% 及銀 85%	黃金 96% 及銀 85%
可支付黃金總量（盎司）	428	4,852
平均現金成本（美元/盎司）	1,107	993.1
平均綜合維持成本（美元/盎司）	1,617	1,178

Notes:

備註：

Considering Royalties

考慮特許權使用費

Financial Key Performance Indicators (“KPIs”) expected for the Project

項目預期的財務關鍵績效指標（KPI）

Main assumptions:

主要假設：

Gold price: US$ 3,177/oz
Silver price: US$ 37.2/oz
Exchange average rate (GTC/USD): 7.6
Discount rate: 5%

黃金價格：3,177 美元/盎司
白銀價格：37.2 美元/盎司
匯率平均值（GTC/USD）：7.6
折現率：5%


			Gold prices (US$/oz)
Unleveraged		2,383 (-25%)	3,177	4,200 (Spot)
After-tax NPV	US$ million	655	1.344,5	2,175.3
After-tax simple payback (after Start-Up)	years	4.5	2.82	2.31
After-tax IRR	% p.a.	21.5%	35.6%	46.6%


			黃金價格（美元/盎司）
無槓桿		2,383（-25%）	3,177	4,200（現貨）
税後淨現值	百萬美元	655	1,344.5	2,175.3
税後簡單回收期（啓動後）	年	4.5	2.82	2.31
税後內部收益率	% 年	21.5%	35.6%	46.6%

Sensitivity analyses were conducted in order to simulate project financial performance according to different scenarios of gold price, as well as capital structure with debt on total capital. The table below indicates expected results considering an upfront debt of US$ 191 million to partially fund the construction capex.

進行了敏感性分析，以模擬項目在不同黃金價格和資本結構（以債務佔總資本）下的財務表現。下表顯示了考慮到 191 百萬美元的前期債務以部分資助建設資本支出的預期結果。


			Gold prices (US$/oz)
Leveraged		2,383 (-25%)	3,177	4,200 (Spot)
After-tax simple payback (after Start-Up)	Years	4.78	2.91	2.15
After-tax IRR	% p.a.	26.5%	49.8%	68.4%


			黃金價格（美元/盎司）
槓桿		2,383（-25%）	3,177	4,200（現貨）
税後簡單回收期（啓動後）	年	4.78	2.91	2.15
税後內部收益率	% 年	26.5%	49.8%	68.4%

Geology, Mineralization and Drilling

地質、礦化和鑽探

The deposit at the Era Dorada Project is considered to be a classic mesothermal/orogenic gold deposit type in a sheared and deformed Archaean to Proterozoic greenstone belt sequence comprised of metamorphosed volcanic‐sedimentary rocks units intruded by slightly younger post‐tectonic igneous bodies.

Era Dorada 項目的礦牀被認為是一種經典的中熱/造山型黃金礦牀，位於一個被剪切和變形的古生代至元古代綠巖帶序列中，該序列由變質的火山 - 沉積岩單元構成，並被稍年輕的後構造火成岩體侵入。

The Era Dorada deposit is hosted within a sequence of banded arkosic metapelitic schists, subjected to upper‐amphibolite facies regional metamorphism.

Era Dorada 礦牀位於一系列帶狀的長石質變質泥岩片岩中，經歷了上安菲波利特相的區域變質作用。

The mineralization types are strongly controlled by regional structure with secondary structures providing the preferred host for gold mineralization. In addition to the main mineralized zone, several thinner sub-parallel zones with gold mineralization are identified. Two distinct gold mineralization types are identified in drill cores: 1) disseminated free gold, and 2) gold in association with sulphide mineralization represented by pyrrhotite, chalcopyrite, pyrite, sphalerite, and galena. Additionally, the sulphide mineralization was observed in the outer contact between chert boudins and schist along with or associated with schist foliation.

礦化類型受到區域構造的強烈控制，次級構造提供了黃金礦化的優選宿主。除了主要礦化區外，還識別出幾條較薄的平行礦化帶。在鑽探核心中識別出兩種不同的黃金礦化類型：1）分散的遊離黃金，2）與硫化礦物（如磁黃鐵礦、黃銅礦、黃鐵礦、閃鋅礦和方鉛礦）相關的黃金。此外，在硅質岩塊與片岩的外接觸處觀察到硫化礦化，或與片岩的片理相關。

The main Era Dorada ore body has overall dimensions of approximately 600 meters in the down-dip direction, 3,500 meters along the strike, and averages of 50 meters in thickness in the central and 30 meters in thickness in the southern and northern portions. The Era Dorada deposit is located within a NE-SW trending shear zone and displays a penetrative NNE‐trending fabric, dipping southeast at around 40 degrees. The ore body is open down dip beyond current Inferred Mineral Resources.

Era Dorada 礦體的整體尺寸約為 600 米（下傾方向）、3500 米（沿走向），在中央部分平均厚度為 50 米，在南北部分平均厚度為 30 米。Era Dorada 礦牀位於一個東北 - 西南走向的剪切帶內，顯示出穿透性的東北走向構造，傾斜角約為 40 度。礦體在當前推測礦產資源之外仍然開放。

The Era Dorada deposit has been drilled out at nominal drill spacing approximately 50m x 50m. A total of 303 diamond drill holes and 921 reverse circulation (“RC”) holes totaling 109,090m were drilled between 1979 and 2022. The property drilling database contains 74,038 sample intervals within the drilling database used in support of mineral resources.

Era Dorada 礦牀的鑽探間距約為 50 米 x 50 米。1979 年至 2022 年間，共鑽探了 303 個金剛石鑽孔和 921 個反循環（“RC”）孔，總計 109,090 米。該物業的鑽探數據庫包含 74,038 個樣本區間，用於支持礦產資源。

Data Verification

數據驗證

Garth Kirkham (Kirkham Geosystems), a QP of Mineral Resources and Geology performed data verification and validation procedures on the drilling database prior to modeling and reviewed the geological, drilling, and Au analytical data which was used to support Mineral Resources. Additionally, he conducted a site visit to the Project, reviewing geology, drill core, sample storage and security, as well conducted interviews with site personnel. It is the QP’s opinion that the raw drilling data used for estimating Mineral Resources has been adequately reviewed and any identified potential risks are accounted for in resource classified, in-line with S-K 1300 guidelines.

Garth Kirkham（Kirkham Geosystems），礦產資源和地質的合格專業人員，在建模之前對鑽探數據庫進行了數據驗證和驗證程序，並審查了用於支持礦產資源的地質、鑽探和黃金分析數據。此外，他還進行了項目現場訪問，審查了地質、鑽探核心、樣本存儲和安全性，並與現場人員進行了訪談。合格專業人員認為，用於估算礦產資源的原始鑽探數據已得到充分審查，任何識別出的潛在風險均已在資源分類中考慮，符合 S-K 1300 指南。

Mineral Resource Estimates

礦產資源估算

The mineral resource estimate is based upon the reasonable prospect of eventual economic extraction based on continuity and underground mining shapes, using estimates of operating costs and price assumptions. The “reasonable prospects for eventual economic extraction” were tested using stope optimizations performed using Datamine Studio UG v.2.57TM based on reasonable prospects of eventual economic assumptions, as shown in below

礦產資源估算基於最終經濟開採的合理前景，考慮了連續性和地下開採形狀，使用了運營成本和價格假設的估算。“最終經濟開採的合理前景” 通過使用 Datamine Studio UG v.2.57TM 進行的採場優化進行了測試，基於最終經濟假設的合理前景，如下所示。

Metal prices are based on long-term three-year forecast consensus financial institution estimates published by CIBC (Canadian Imperial Bank of Commerce).

金屬價格基於 CIBC（加拿大帝國商業銀行）發佈的長期三年預測共識金融機構估算。

Parameters Used for Stope Optimization and Cut-off Grade

用於採場優化和邊際品位的參數


Parameter	Unit	RPEEE UG Mining Method
LH	MCF
Gold price	US$/oz Au	2500
Project Parameters
Process Recovery	%	96.00%
Payable metal	%	99.92%
TC/RC	US$/oz Au	2.21
Royalty
Royalty NSR	% of NSR	1.05%
Guatemalan Gov't Royalty (Gross)	% total payable metals revenue	1.00%
OPEX Estimates
Mining	US$/t milled	100	115
Processing	US$/t milled	32	32
Site Services	US$/t milled	18	18
G&A	US$/t milled	20	20
Total OPEX estimate	US$/t milled	170	185
Cut-off Grade
In-situ cut-off Au grade	g/t	2.25	2.45

| | | | | | --- | --- | --- | | 參數 | 單位 | RPEEE 地下開採方法 | | LH | MCF | | 黃金價格 | 美元/盎司 | 2500 | | 項目參數 | | | 處理回收率 | % | 96.00% | | 可支付金屬 | % | 99.92% | | TC/RC | 美元/盎司 | 2.21 | | 特許權使用費 | | | 特許權使用費 NSR | % 的 NSR | 1.05% | | 危地馬拉政府特許權使用費（總額）| % 總可支付金屬收入 | 1.00% | | 運營成本估算 | | | 採礦 | 美元/噸 | 100 | 115 | | 加工 | 美元/噸 | 32 | 32 | | 現場服務 | 美元/噸 | 18 | 18 | | 管理費用 | 美元/噸 | 20 | 20 | | 總運營成本估算 | 美元/噸 | 170 | 185 | | 邊際品位 | | | 原位邊際黃金品位 | 克/噸 | 2.25 | 2.45 |

Source: Snowden Optiro, 2025.

來源：Snowden Optiro，2025 年。

Figure below illustrates the gold block model along with the “reasonable prospects of eventual economic extraction” underground mining shapes.

下圖展示了黃金塊模型以及 “最終經濟開採的合理前景” 地下開採形狀。

Plan View of Gold Block Model with Reasonable Prospects Optimized Mine Shapes with Existing Underground Ramps (Source: Kirkham , 2025)

黃金塊模型的平面視圖，具有合理前景優化的礦體形狀和現有地下坡道（來源：Kirkham，2025 年）

Table below shows tonnage and grade in the Era Dorada deposit and includes all domains at a 2.25 g Au/t cut-off grade.

下表顯示了 Era Dorada 礦牀的噸位和品位，幷包括在 2.25 克黃金/噸的邊際品位下的所有域。


Category	Tonnes (kt)	Grade (Au g/t)	Grade (Ag g/t)	Grade (AuEq g/t)	Contained Gold (koz)	Contained Silver (koz)	Contained AuEq (koz)
Indicated	2,460	6.36	22.76	6.61	503	1,801	523
Inferred	736	5.94	19.22	6.16	141	455	146


類別	噸（千噸）	品位（黃金克/噸）	品位（銀克/噸）	品位（黃金當量克/噸）	含金量（千盎司）	含銀量（千盎司）	含黃金當量（千盎司）
指示資源	2,460	6.36	22.76	6.61	503	1,801	523
推測資源	736	5.94	19.22	6.16	141	455	146

Notes:

備註：

The mineral resource statement is subject to the following:

礦產資源聲明受以下條件的限制：

Exclusive Mineral Resources are reported in in accordance with S-K 1300.
Mineral resource estimates have been prepared by Garth Kirkham, P.Geo., a Qualified Person as defined by SK-1300.
The Mineral Resource estimate is reported on a 100% ownership basis.
Underground mineral resources are reported at a cut-off grade of 2.25 g Au/t. Cut-off grades are based on a assumed metal prices of US$ 2,500/oz gold and US$ 28/oz silver, and assumed metallurgical recovery, mining, processing, and G&A costs.
Mineral Resources are reported without applying mining dilution, mining losses, or process losses.
Resources are constrained within underground shapes based on reasonable prospects of economic extraction, in accordance with SK-1300. Reasonable prospects for economic extraction were met by applying mining shapes with a minimum mining width of 2.0 m, ensuring grade continuity above the cut-off value, and by excluding non-mineable material prior to reporting.
Metallurgical recoveries reported as the average over the life of mine and are assumed to be 96% Au and 85% Ag, respectively.
Bulk density is estimated by lithology and averages 2.47, 2.57 and 2.54 g/cm3 for the Salinas, Mita and mineralized vein domains, respectively.
Mineral resources are classified as Indicated, and Inferred based on geological confidence and continuity, spacing of drill holes, and data quality.
Effective date of the mineral resource estimate is November 30, 2025.
Tonnage, grade, and contained metal values have been rounded. Totals may not sum due to rounding.
Mineral resources are not mineral reserves and do not have demonstrated economic viability.

獨家礦產資源的報告遵循 S-K 1300 標準。
礦產資源估算由 Garth Kirkham, P.Geo. 編制，他是符合 SK-1300 定義的合格人員。
礦產資源估算以 100% 所有權為基礎報告。
地下礦產資源在 2.25 克黃金/噸的截止品位下報告。截止品位基於假設的金價為每盎司 2,500 美元和銀價為每盎司 28 美元，以及假設的冶金回收率、採礦、加工和一般管理成本。
礦產資源報告時未考慮採礦稀釋、採礦損失或加工損失。
資源在地下形狀內受到限制，基於合理的經濟開採前景，符合 SK-1300 標準。通過應用最小採礦寬度為 2.0 米的採礦形狀，確保品位連續性高於截止值，並在報告前排除不可開採材料，滿足合理的經濟開採前景。
報告的冶金回收率為礦山生命週期的平均值，假設黃金和白銀的回收率分別為 96% 和 85%。
大宗密度根據岩石類型估算，Salinas、Mita 和礦化脈域的平均值分別為 2.47、2.57 和 2.54 克/立方厘米。
礦產資源根據地質信心和連續性、鑽孔間距和數據質量被分類為指示資源和推測資源。
礦產資源估算的生效日期為2025年11月30日。
噸位、品位和含金屬值已進行四捨五入。總和可能因四捨五入而不相等。
礦產資源不是礦產儲量，並且沒有證明的經濟可行性。

Mineral Reserve Estimates

礦產儲量估算

Era Dorada Mineral Reserve Estimate using 2.82 g Aueq/t Cutoff

Era Dorada 礦產儲量 估算使用 2.82 克 黃金當量/噸 截止品位


ERA DORADA PROJECT PROVEN AND PROBABLE (P&P) MINERAL RESERVES
Reserve Classification	Tonnage (kt)	Au grade (g/t)	Au metal (koz)	Ag grade (g/t)	Ag metal (koz)	Au Eq grade (g/t)	Au Eq metal (koz)
Proven	30	5.35	5	22.59	22	5.60	5
Probable	8,717	6.01	1,684	20.39	1,144	6.23	1,746
Proven + Probable	8,747	6.01	1,689	20.40	1,166	6.23	1,751


ERA DORADA 項目已探明和可採儲量 (P&P)
儲量
分類	噸位 (千噸)	黃金品位 (克/噸)	黃金金屬
(千盎司)	銀品位
(克/噸)	銀金屬
(千盎司)	黃金當量品位
(克/噸)	黃金當量金屬 (千盎司)
已探明	30	5.35	5	22.59	22	5.60	5
可採	8,717	6.01	1,684	20.39	1,144	6.23	1,746
已探明 + 可採	8,747	6.01	1,689	20.40	1,166	6.23	1,751

Notes:

備註：

The Mineral Reserve was estimated and classified in accordance with the USA S-K 1300 standards.
Mineral Reserve have an effective date of November 30, 2025. The Qualified Person for the estimate is Ruy Lacourt, B.Sc. Mining Engineering, MSc., Registered Member of the SME, an Associate of Snowden Optiro.
The Mineral Reserve was estimated using metal prices of US$2,000/oz Au and US$25/oz Ag, and metallurgical recoveries of 96% Au and 85% Ag. Underground mining costs were assumed as US$100/t (Long Hole mining) and US$115/t (Cut-and-Fill mining), with processing, site services and G&A costs as of US$32/t, US$18/t and US$20/t, respectively. Royalties comprise 2.05% NSR to the previous owners plus a 5.0% gross government royalty. Cutoff grades in gold equivalent are 2.82g/t for underground Long Hole mining and 3.07g/t for Cut-and-fill.
Proven Mineral Reserve is only related to existing stockpile in Era Dorada Project since no-in situ Mineral Resources classified as Measured.
The formula for gold equivalent: Au eq = Au grade + 0.011 * Ag grade.
The Mineral Reserve is presented on a 100% ownership basis fully attributable to Aura Minerals.
Tonnages and grades have been rounded in accordance with reporting guidelines. Tonnages are rounded to the nearest 1,000 t, metal grades are rounded to two decimal places. Tonnage and grade are in metric units; contained gold and silver are reported as thousands of troy ounces. Totals may not sum due to rounding.

礦產儲量的估算和分類遵循美國 S-K 1300 標準。
礦產儲量的生效日期為2025年11月30日。估算的合格人員為 Ruy Lacourt，礦業工程學士，碩士，SME 註冊會員，Snowden Optiro 的副會員。
礦產儲量的估算使用的金價為每盎司 2,000 美元，銀價為每盎司 25 美元，冶金回收率為 96% 黃金和 85% 白銀。假設地下采礦成本為每噸 100 美元（長孔採礦）和每噸 115 美元（切填採礦），加工、現場服務和一般管理成本分別為每噸 32 美元、18 美元和 20 美元。特許權使用費包括 2.05% 的 NSR 付給前所有者，以及 5.0% 的政府總特許權使用費。地下長孔採礦的黃金當量截止品位為 2.82 克/噸，切填的截止品位為 3.07 克/噸。
已探明礦產儲量僅與 Era Dorada 項目中現有的堆存有關，因為沒有被分類為已測量的原位礦產資源。
黃金當量的公式：Au eq = Au grade + 0.011 * Ag grade。
礦產儲量以 100% 所有權為基礎，完全歸 Aura Minerals 所有。
噸位和品位已根據報告指南進行四捨五入。噸位四捨五入到最接近的 1,000 噸，金屬品位四捨五入到小數點後兩位。噸位和品位以公制單位表示；含金和銀以千盎司報告。總和可能因四捨五入而不相等。

The deposit will be accessed via two existing main declines servicing the South and North zones, supplemented by additional ramps. Sublevels are spaced 20 m vertically. A panel geometry is adopted, consisting of four sublevels with 20m plus a sill pillar with 20m (total panel height 100 m) to cover approximately 300m of extension in depth, with the sill pillars recovered late in the mine life.

該礦牀將通過兩個現有的主要下坡通道進入，服務於南區和北區，並輔以額外的斜坡。子水平垂直間隔為 20 米。採用面板幾何形狀，由四個子水平和一個 20 米的底柱組成（總面板高度 100 米），以覆蓋約 300 米的深度延伸，底柱將在礦山生命週期的後期回收。

The mine infrastructure includes mine dewatering from surface to control the effects of high groundwater temperature and modular refrigeration plants to secure suitable working conditions underground.

礦山基礎設施包括從地表進行礦山排水，以控制高地下水温度的影響，以及模塊化製冷設備，以確保地下適宜的工作條件。

Mine Plan

礦山計劃

The Era Dorada deposit will be mined using underground methods, with production derived from a combination of sublevel long hole (LH) stoping as the dominant method, mechanized cut-and-fill (CF) in geotechnically or geometrically constrained areas, and minor room-and-pillar. Long hole stoping is expected to contribute approximately 98.5% of total metal production, with MCF contributing approximately 1.2% and room-and-pillar approximately 0.1%. The selection of mining methods reflects the orebody geometry, vein continuity and dip, and geomechanical constraints, with LH preferred for safety, productivity, and cost effectiveness where conditions allow its application.

Era Dorada 礦牀將採用地下方法進行開採，生產將來自以子水平長孔 (LH) 採礦為主的方法，機械化切填 (CF) 採礦用於地質或幾何受限區域，以及少量的房間和柱式採礦。長孔採礦預計將貢獻約 98.5% 的總金屬生產，MCF 貢獻約 1.2%，房間和柱式採礦約 0.1%。採礦方法的選擇反映了礦體幾何形狀、脈絡連續性和傾角，以及地質力學約束，在條件允許的情況下，LH 採礦因其安全性、生產率和成本效益而被優先選擇。

Optimization, stope shape generation, mine design, and scheduling were undertaken by Snowden Optiro: optimized stopes shapes were generated under defined geometric and geotechnical constraints, screened for economic value for method-specific gold equivalent cutoff grades, and integrated with the development design. Long hole stopes were configured as longitudinal or transverse depending on vein thickness and continuity, with transverse LH applied in zones exceeding 20 m thickness. The LH stopes will be backfilled using cemented paste fill or cemented rockfill (CRF). Cut-and-fill stopes will be mined in breast stoping and overhand lifts with preferentially cemented backfill providing rock support and a working floor.

優化、採礦形狀生成、礦山設計和調度由 Snowden Optiro 進行：在定義的幾何和地質約束下生成優化的採礦形狀，篩選出具有經濟價值的特定方法的黃金當量截止品位，並與開發設計相結合。長孔採礦根據脈絡厚度和連續性配置為縱向或橫向，在厚度超過 20 米的區域應用橫向 LH 採礦。LH 採礦將使用水泥漿填充或水泥岩填充 (CRF) 回填。切填採礦將在胸部採礦和上升提升中進行，優先使用水泥回填提供岩石支撐和工作面。

Production Schedule

生產計劃

The mine scheduling was developed subject to operational constraints including maximum annual development advance of circa 8,500 m, plant throughput limits, paste and Cemented Rockfill placement and curing cycles and mine dewatering requirements below the water table.

礦山調度是在包括每年最大開發推進約 8500 米、工廠處理能力限制、漿體和水泥填充物的放置和固化週期以及水下排水要求等運營約束條件下制定的。

The Life-of-mine mine plan targets a production rate as of 1,600 tonnes per day extending for 18 years from 2026 to 2043, with higher metal output scheduled in the early years through prioritized development of higher-grade areas of the mine.

礦山生命週期計劃的目標是從 2026 年到 2043 年實現每日 1600 噸的生產率，前幾年通過優先開發礦山的高品位區域來提高金屬產量。

Mining starts in May 2026 and follows a ramp-up to meet the commercial production of the plant in October 2027 achieving +100koz in 2028 and 2029, +120koz from 2030 to 2032 and +100koz through the remainder of the mine life.

採礦將於 2026 年 5 月開始，並逐步提升以滿足 2027 年 10 月工廠的商業生產，預計在 2028 年和 2029 年達到超過 100 千盎司，2030 年至 2032 年達到超過 120 千盎司，礦山生命週期的其餘時間達到超過 100 千盎司。

Processing

加工

Based on the information and metallurgical test results, Era Dorada gold-silver mineralization is considered amenable to gravity concentration followed by cyanide leaching. The process plant will consist of a 1600 tons/day, one stage crushing, SAG mill and pebble crusher, ball mill, leach, CIP, elution, electrowinning circuit, all of which are well-known, conventional, processing unit operations.

根據信息和冶金測試結果，Era Dorada 金銀礦化被認為適合重力濃縮，隨後進行氰化浸出。加工廠將由一個每日 1600 噸的單級破碎、SAG 磨和卵石破碎機、球磨機、浸出、CIP、洗脱、電解精煉電路組成，所有這些都是眾所周知的常規加工單元操作。

The process plant is designed for treatment of 1,600 tons/day or 72.5 tons/hour based on 8,059 hours per annum or 92% availability. The crushing section design is based on 70% availability, and the gold room availability is set one melt per week. The process plant is designed to operate with two shifts per day and 365 days per year and will produce doré bars.

加工廠的設計是基於每日處理 1600 噸或每小時 72.5 噸，基於每年 8059 小時或 92% 的可用性。破碎部分的設計基於 70% 的可用性，金室的可用性設定為每週一次熔鍊。加工廠設計為每天兩班工作，全年 365 天運營，並將生產金錠。

Engineering, Procurement and Construction Management

工程、採購和施工管理

Basic engineering and detailed engineering for earthmoving as well as the engineering design for the mine is completed. Detailed engineering for the initial areas to be built is ongoing. The BID to hire the ECM is underway.

土方工程的基礎工程和詳細工程以及礦山的工程設計已完成。初始建設區域的詳細工程正在進行中。聘請 ECM 的招標正在進行中。

Feasibility Study Preparation

可行性研究準備

Aura retained AUSENCO and Snowden Optiro to jointly prepare with the Aura project and technical services team a Feasibility Study on the Era dorada Project. The Technical Report provides the underground Feasibility Study.

Aura 聘請了 AUSENCO 和 Snowden Optiro 與 Aura 項目和技術服務團隊共同準備 Era Dorada 項目的可行性研究。技術報告提供了地下可行性研究。

Qualified Persons

合格人員

The technical content of this press release has been reviewed and approved by the qualified persons who were involved with preparation of the Era Dorada Feasibility study: Garth Kirkham, P.Geo (Kirkham Geosystem), Ruy Lacourt, B.Sc. Mining Engineering, MSc., Registered Member of the SME, an Associate of Snowden Optiro. Robert Raponi, P. Eng., Ausenco, (Toronto, Canada)

本新聞稿的技術內容已由參與 Era Dorada 可行性研究準備的合格人員審核和批准：Garth Kirkham，P.Geo（Kirkham Geosystem），Ruy Lacourt，B.Sc. 礦業工程，碩士，SME 註冊會員，Snowden Optiro 的副會長。Robert Raponi，P. Eng.，Ausenco（加拿大多倫多）。

Qualified persons are not aware of any known political, legal, environmental or other risks that could materially affect the project development.

合格人員未發現任何已知的政治、法律、環境或其他風險可能對項目開發產生重大影響。

About Aura 360° Mining

關於 Aura 360°採礦

Aura is focused on mining in complete terms – thinking holistically about how its business impacts and benefits every one of our stakeholders: our company, our shareholders, our employees, and the countries and communities we serve. We call this 360° Mining.

Aura 專注於全面的採礦——全面考慮其業務對每一個利益相關者的影響和利益：我們的公司、我們的股東、我們的員工，以及我們服務的國家和社區。我們稱之為 360°採礦。

Aura is a company focused on the development and operation of gold and base metal projects in the Americas. The company's six operating assets include the Minosa gold mine in Honduras; the Almas, Apoena, and Borborema and MSG gold mines in Brazil; and the Aranzazu copper, gold, and silver mine in Mexico. Additionally, the company owns Era Dorada, a gold project in Guatemala; Tolda Fria, a gold project in Colombia; and three projects in Brazil: Matupá, which is under development; São Francisco, which is in care and maintenance; and the Carajás copper project in the Carajás region, in the exploration phase.

Aura 是一家專注於美洲黃金和基礎金屬項目開發和運營的公司。公司的六個運營資產包括洪都拉斯的 Minosa 金礦；巴西的 Almas、Apoena、Borborema 和 MSG 金礦；以及墨西哥的 Aranzazu 銅、金和銀礦。此外，公司還擁有位於危地馬拉的 Era Dorada 金項目；位於哥倫比亞的 Tolda Fria 金項目；以及巴西的三個項目：正在開發中的 Matupá；處於維護狀態的 São Francisco；以及處於勘探階段的 Carajás 銅項目。

For further information, please visit Aura’s website at www.auraminerals.com

欲瞭解更多信息，請訪問 Aura 的網站 www.auraminerals.com

Forward-Looking Information

前瞻性信息

This press release contains “forward-looking information” and “forward-looking statements” within the meaning of applicable Canadian securities laws and the United States Private Securities Litigation Reform Act of 1995 (collectively, “forward-looking statements”), which may include, but is not limited to, statements with respect to the activities, events or developments that the Company expects or anticipates will or may occur in the future. Often, but not always, forward-looking statements can be identified by the use of words and phrases such as “plans,” “expects,” “is expected,” “budget,” “scheduled,” “estimates,” “forecasts,” “intends,” “anticipates,” or “believes” or variations (including negative variations) of such words and phrases, or state that certain actions, events or results “may,” “could,” “would,” “might” or “will” be taken, occur or be achieved.

本新聞稿包含 “前瞻性信息” 和 “前瞻性聲明”，符合適用的加拿大證券法和 1995 年美國私人證券訴訟改革法的定義（統稱為 “前瞻性聲明”），可能包括但不限於關於公司預計或預期將或可能在未來發生的活動、事件或發展的聲明。通常，但並非總是，前瞻性聲明可以通過使用 “計劃”、“期望”、“預計”、“預算”、“安排”、“估計”、“預測”、“意圖”、“預期” 或 “相信” 或這些詞和短語的變體（包括否定變體）來識別，或聲明某些行動、事件或結果 “可能”、“可以”、“將”、“可能” 或 “將” 被採取、發生或實現。

Known and unknown risks, uncertainties and other factors, many of which are beyond the Company’s ability to predict or control, could cause actual results to differ materially from those contained in the forward-looking statements. Specific reference is made to the most recent Annual Information Form on file with certain Canadian provincial securities regulatory authorities and the 424(b) prospectus filed with the United States Securities and Exchange Commission for a discussion of some of the factors underlying forward-looking statements, which include, without limitation, volatility in the prices of gold, copper and certain other commodities, changes in debt and equity markets, the uncertainties involved in interpreting geological data, increases in costs, environmental compliance and changes in environmental legislation and regulation, interest rate and exchange rate fluctuations, general economic conditions and other risks involved in the mineral exploration and development industry. Readers are cautioned that the foregoing list of factors is not exhaustive of the factors that may affect the forward-looking statements. All forward-looking statements herein are qualified by this cautionary statement. Accordingly, readers should not place undue reliance on forward-looking statements. The press release includes forward-looking statements relating, but not limited to, the following: the preparation and filing of the Era Dorada Feasibility Study and the timing of same; collaboration with local authorities and governmental agencies; economic viability of Era Dorada; evaluation of alternative mining methods for Era Dorada; the operation of Era Dorada; and mineral resource estimates.

已知和未知的風險、不確定性及其他因素，其中許多超出了公司的預測或控制能力，可能導致實際結果與前瞻性聲明中所包含的內容存在重大差異。特別提及最近提交給某些加拿大省證券監管機構的年度信息表以及向美國證券交易委員會提交的 424(b) 招股説明書，以討論一些影響前瞻性聲明的因素，包括但不限於黃金、銅及某些其他商品價格的波動、債務和股本市場的變化、解釋地質數據時所涉及的不確定性、成本的增加、環境合規及環境立法和監管的變化、利率和匯率波動、一般經濟狀況以及礦產勘探和開發行業所涉及的其他風險。讀者應注意，以上因素清單並不詳盡，可能影響前瞻性聲明的因素還有很多。所有前瞻性聲明均受到此警示聲明的限制。因此，讀者不應對前瞻性聲明過度依賴。新聞稿中包含的前瞻性聲明涉及但不限於以下內容：Era Dorada 可行性研究的準備和提交及其時間；與地方當局和政府機構的合作；Era Dorada 的經濟可行性；對 Era Dorada 替代採礦方法的評估；Era Dorada 的運營；以及礦產資源估算。

The Company undertakes no obligation to update publicly or otherwise revise any forward-looking statements whether as a result of new information or future events or otherwise, except as may be required by law. If the Company does update one or more forward-looking statements, no inference should be drawn that it will make additional updates with respect to those or other forward-looking statements.

公司沒有義務公開或以其他方式修訂任何前瞻性聲明，無論是由於新信息、未來事件或其他原因，除非法律要求。如果公司更新了一項或多項前瞻性聲明，不應推斷出它將對這些或其他前瞻性聲明進行額外更新。

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/9ec511f1-80cd-41ce-84d5-25483c447b44

與本公告一起發佈的照片可在 https://www.globenewswire.com/NewsRoom/AttachmentNg/9ec511f1-80cd-41ce-84d5-25483c447b44 獲取。

Contact:Investor Relationsri@auraminerals.comwww.auraminerals.com

 聯繫方式：投資者關係 ri@auraminerals.comwww.auraminerals.com

Aura Minerals 完成了 Era Dorada 項目的可行性研究 | AUGO 股票新聞