Electric Metals Advances the Emily Manganese Project in Minnesota with High Recovery Underground Mining Approach
Electric Metals USA (EMUSF) has announced positive interim results from its Preliminary Economic Assessment (PEA) for the Emily Manganese Project in Minnesota. The study, conducted by Forte Dynamics, reveals promising mining efficiency metrics:
The selected underhand cut-and-fill underground mining method is expected to achieve:
- 88% extraction of estimated resources
- 89% recovery of contained manganese
The Emily Project is confirmed as North America's highest-grade manganese resource. The mining approach was chosen based on geotechnical testing by RESPEC Engineering, offering advantages in selective mining, high ore extraction, low ore dilution, and the ability to reuse waste rock as backfill. The PEA completion is expected in Q2 2025, followed by a Pre-Feasibility Study focusing on developing a processing facility for battery-grade high-purity manganese sulfate monohydrate (HPMSM).
Electric Metals USA (EMUSF) ha annunciato risultati intermedi positivi dalla sua Valutazione Economica Preliminare (PEA) per il Progetto Manganese Emily nel Minnesota. Lo studio, condotto da Forte Dynamics, rivela metriche promettenti di efficienza mineraria:
Il metodo di estrazione sotterranea con taglio e riempimento selezionato dovrebbe raggiungere:
- l'88% di estrazione delle risorse stimate
- il 89% di recupero del manganese contenuto
Il Progetto Emily è confermato come la risorsa di manganese di più alta qualità in Nord America. L'approccio minerario è stato scelto sulla base di test geotecnici effettuati da RESPEC Engineering, offrendo vantaggi nell'estrazione selettiva, alta estrazione del minerale, bassa diluizione del minerale e la possibilità di riutilizzare le rocce di scarto come riempimento. Il completamento della PEA è previsto per il secondo trimestre del 2025, seguito da uno Studio di Pre-Fattibilità incentrato sullo sviluppo di un impianto di lavorazione per solfato di manganese monoidrato ad alta purezza per batterie (HPMSM).
Electric Metals USA (EMUSF) ha anunciado resultados intermedios positivos de su Evaluación Económica Preliminar (PEA) para el Proyecto de Manganeso Emily en Minnesota. El estudio, realizado por Forte Dynamics, revela métricas prometedoras de eficiencia minera:
El método de minería subterránea de corte y relleno seleccionado se espera que logre:
- 88% de extracción de los recursos estimados
- 89% de recuperación de manganeso contenido
El Proyecto Emily se confirma como el recurso de manganeso de mayor grado en América del Norte. El enfoque minero fue elegido en base a pruebas geotécnicas realizadas por RESPEC Engineering, ofreciendo ventajas en minería selectiva, alta extracción de mineral, baja dilución de mineral y la capacidad de reutilizar rocas de desecho como relleno. Se espera que la finalización de la PEA ocurra en el segundo trimestre de 2025, seguida de un Estudio de Pre-Factibilidad centrado en el desarrollo de una instalación de procesamiento para sulfato de manganeso monohidratado de alta pureza para baterías (HPMSM).
Electric Metals USA (EMUSF)는 미네소타의 에밀리 망간 프로젝트에 대한 예비 경제 평가(PEA)에서 긍정적인 중간 결과를 발표했습니다. Forte Dynamics가 수행한 이 연구는 유망한 채굴 효율성 지표를 보여줍니다:
선택된 언더핸드 컷 앤 필 지하 채굴 방법은 다음과 같은 성과를 낼 것으로 예상됩니다:
- 추정 자원의 88% 추출
- 함유된 망간의 89% 회수
에밀리 프로젝트는 북미에서 가장 높은 등급의 망간 자원으로 확인되었습니다. 채굴 접근법은 RESPEC Engineering의 지반 공학 테스트를 기반으로 선택되었으며, 선택적 채굴, 높은 광석 추출, 낮은 광석 희석 및 폐석을 채움재로 재사용할 수 있는 장점을 제공합니다. PEA 완료는 2025년 2분기로 예상되며, 이후 배터리 등급의 고순도 망간 황산염 일수화물(HPMSM) 처리 시설 개발에 중점을 둔 예비 타당성 조사가 진행될 예정입니다.
Electric Metals USA (EMUSF) a annoncé des résultats intermédiaires positifs de son Évaluation Économique Préliminaire (PEA) pour le Projet de Manganèse Emily dans le Minnesota. L'étude, réalisée par Forte Dynamics, révèle des indicateurs prometteurs d'efficacité minière :
La méthode de minage souterrain par coupe et remplissage sélectionnée devrait atteindre:
- 88 % d'extraction des ressources estimées
- 89 % de récupération du manganèse contenu
Le Projet Emily est confirmé comme la ressource en manganèse de la plus haute qualité en Amérique du Nord. L'approche minière a été choisie sur la base des tests géotechniques réalisés par RESPEC Engineering, offrant des avantages en matière de minage sélectif, d'extraction élevée du minerai, de faible dilution du minerai et de la possibilité de réutiliser les roches de déchets comme remblai. L'achèvement de la PEA est prévu pour le deuxième trimestre 2025, suivi d'une Étude de Pré-Faisabilité axée sur le développement d'une installation de traitement pour le sulfate de manganèse monohydraté de haute pureté pour batteries (HPMSM).
Electric Metals USA (EMUSF) hat positive vorläufige Ergebnisse aus seiner Vorläufigen Wirtschaftlichkeitsbewertung (PEA) für das Emily-Mangan-Projekt in Minnesota bekannt gegeben. Die von Forte Dynamics durchgeführte Studie zeigt vielversprechende Kennzahlen zur Bergbaueffizienz:
Die ausgewählte unterirdische Schnitt- und Füllmethode wird voraussichtlich folgende Ergebnisse erzielen:
- 88% Extraktion der geschätzten Ressourcen
- 89% Rückgewinnung des enthaltenen Mangans
Das Emily-Projekt wird als die hochwertigste Manganressource in Nordamerika bestätigt. Der Bergbauansatz wurde auf Grundlage geotechnischer Tests von RESPEC Engineering ausgewählt und bietet Vorteile in der selektiven Gewinnung, hoher Erzextraktion, geringer Erzverdünnung und der Möglichkeit, Abraum als Auffüllmaterial wiederzuverwenden. Der Abschluss der PEA wird für das 2. Quartal 2025 erwartet, gefolgt von einer Machbarkeitsstudie, die sich auf die Entwicklung einer Verarbeitungsanlage für batterietaugliches hochreines Mangan(II)-sulfat-Monohydrat (HPMSM) konzentriert.
- Highest-grade manganese resource in North America
- 88% extraction rate of estimated resources
- 89% recovery rate of contained manganese
- Mining method allows waste rock reuse as backfill
- Higher cost mining technique compared to alternatives
- PEA still in preliminary stages - final results pending
TORONTO, ON / ACCESS Newswire / February 27, 2025 / Electric Metals (USA) Limited ("EML" or the "Company") (TSXV:EML)(OTCQB:EMUSF) is proud to announce positive interim results in its Preliminary Economic Assessment (PEA) for the Emily Manganese Project in Minnesota. The PEA is a pivotal step in securing a domestic supply of high-purity manganese vital for the United States' national security, energy infrastructure, and the electrification of everything. The PEA is being conducted by Forte Dynamics, Inc. (Forte), a United States-based mining and engineering consulting firm, in accordance with US and Canadian securities requirements [1].
Preliminary Highlights
Underhand Cut-and-Fill underground mining method selected
88% extraction of the estimated resources89% recovery of the contained manganese
In May 2024, Electric Metals announced that Forte had completed an NI 43-101 compliant Mineral Resource Estimate for its Emily Manganese Project in Minnesota (Table 1), confirming it as the highest-grade manganese resource in North America (April 9, 2024).
Table 1: Emily Classified Mineral Resource Estimate (k metric tonnes) [2]
Drill core samples from both potential ore and waste zones were sent to RESPEC Engineering, a U.S.-based laboratory, for geotechnical testing. These tests, conducted in a controlled laboratory setting, were aimed at determining the most suitable mining method and optimal stope dimensions for underground mining. The results confirmed that underground mining is the most effective approach for the future extraction of manganese minerals from the Emily manganese deposit.
Using this geotechnical data, Forte selected underhand cut-and-fill underground mining as the optimal approach. This method is frequently employed for large and small underground mining operations, principally for its ability to selectively mine higher-grade ore deposits with variable geometries and dip. The method involves mining ore in horizontal slices and subsequently filling the voids with paste or cemented backfill material to allow additional extraction. While it is a more costly technique than some alternatives, its advantages include it being extremely selective by targeting high ore extraction, low ore dilution, and the ability to reuse waste rock or tailings as backfill, thereby reducing the surface area of the operation.
Based on a
The figures below represent an isometric view of the Emily Manganese Deposit and mine design looking northeast in cross-section and isometric view.
Figure 1: Isometric view Emily Project (looking northeast, not to scale)
Figure 2: Representative Cross Section of Emily Project (looking northeast, not to scale)
Brian Savage, CEO, Electric Metals, commented "We are very pleased with the approach and work performed by Forte on our PEA, and specifically on identifying a viable underground mining approach for the Emily manganese deposit. We are especially pleased with the ability to extract approximately
Next Steps: Advancing Towards Feasibility
Following the completion of the PEA, expected in Q2 2025, Electric Metals will advance to a Pre-Feasibility Study, further refining economic projections and optimizing mine development strategies. Additional metallurgical testing and engineering evaluations will lay the groundwork for a processing facility designed to produce battery-grade high-purity manganese sulfate monohydrate (HPMSM) and other premium manganese products, enhancing domestic supply chain security for the EV battery sector.
Qualified Person
The scientific and technical data contained in this news release was reviewed and approved by Donald Hulse, a Mining Engineer and Director of Mining Resources of Forte Dynamics, Inc., who is a Qualified Person under National Instrument 43-101 Standards of Disclosure for Mineral Projects.
About Electric Metals (USA) Limited
Electric Metals (USA) Limited (TSXV:EML)(OTCQB:EMUSF) is a US-based mineral development company with manganese and silver projects geared to supporting the transition to clean energy. The Company's principal asset is the Emily Manganese Project in Minnesota, the highest-grade manganese deposit in North America, which has been the subject of considerable technical studies, including National Instrument 43-101 Technical Reports - Resource Estimates. The Company's mission in Minnesota is to become a domestic US producer of high-value, high-purity manganese metal and chemical products to supply the North American electric vehicle battery, technology and industrial markets. With manganese playing a critical and prominent role in lithium-ion battery formulations, and with no current domestic supply or active mines for manganese in North America, the development of the Emily Manganese Project represents a significant opportunity for America, the State of Minnesota and for the Company's shareholders.
For further information, please contact:
Electric Metals (USA) Limited
Brian Savage
CEO & Director
(303) 656-9197
or
Valerie Kimball
Director Investor Relations
720-933-1150
info@electricmetals.com
Forward-Looking Information
This news release contains "forward-looking information" and "forward-looking statements" (collectively, "forward-looking information") within the meaning of applicable securities laws. Forward-looking information is generally identifiable by use of the words "believes," "may," "plans," "will," "anticipates," "intends," "could", "estimates", "expects", "forecasts", "projects" and similar expressions, and the negative of such expressions.
Such statements in this news release include, without limitation: the ability to produce battery-grade high-purity manganese sulfate monohydrate (HPMSM) and other high-grade manganese products from the Emily manganese deposit; conduct a scoping study, Preliminary Economic Assessment and Pre-Feasibility Study to evaluate the overall feasibility and design parameters; development of processing plant; other metallurgical test work, and planned or potential developments in ongoing work by Electric Metals.
These statements address future events and conditions and so involve inherent risks, uncertainties and other factors that could cause actual events or results to differ materially from estimated or anticipated events or results implied or expressed in such forward-looking statements. Such risks include, but are not limited to, the failure to obtain all necessary stock exchange and regulatory approvals. Forward-looking information is based on the reasonable assumptions, estimates, analysis and opinions of management made in light of its experience and perception of trends, updated conditions and expected developments, and other factors that management believes are relevant and reasonable in the circumstances at the date such statements are made. Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated. There can be no assurance that such information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such information. Accordingly, readers should not place undue reliance on forward-looking information.
All forward-looking information herein is qualified in its entirety by this cautionary statement, and the Company disclaims any obligation to revise or update any such forward-looking information or to publicly announce the result of any revisions to any of the forward-looking information contained herein to reflect future results, events, or developments, except as required by law.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
[1] United States Securities and Exchange Commission S-K 1300 and Canadian National Instrument 43-101.
[2] Notes associated with Table 1 were reported in the April 9, 2024 Electric Metals (USA) Limited press release.
SOURCE: Electric Metals (USA) Limited
View the original press release on ACCESS Newswire
FAQ
What are the key extraction metrics for EMUSF's Emily Manganese Project?
When will EMUSF complete the Preliminary Economic Assessment for Emily Project?
Why did EMUSF choose underhand cut-and-fill mining for the Emily Project?
What is the next development phase after EMUSF's PEA completion?
