Electric Metals Advances the Emily Manganese Project in Minnesota with High Recovery Underground Mining Approach
Electric Metals Advances the Emily Manganese Project in Minnesota with
High Recovery Underground Mining Approach
TORONTO, ONTARIO, 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 requirements1.
Preliminary Highlights
• Underhand Cut-and-Fill underground mining method selected
• 88% extraction of the estimated resources
• 89% recovery of the contained manganese
In May 2024, Electric Metals announced that Forte had completed a n 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
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.
2
Drill core samples from both potential ore and waste zones were sent to R ESPEC 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 10% Mn cut -off grade, Forte completed a detail ed design of two representative
mining levels—an upper zone and a lower zone—using this method. By comparing the designed
mineralized zones to the estimated resources on these levels, Forte determined that
approximately 88% of the estimated resources are mineable and recoverable, representing about
89% of the contained manganese. Forte also reports that a dditional analysis may further refine
these figures and improve cost-recovery-cutoff parameters.
The figures below represent an isometric view of the Emily Manganese Deposit and mine design
looking northeast in cross-section and isometric view.
3
Figure 1: Isometric view Emily Project (looking northeast, not to scale)
Figure 2: Representative Cross Section of Emily Project (looking northeast, not to scale)
4
Brian Savage, CEO, Electric Metals, commented “We are very pleased with the approach and work
performed by Forte on ou r 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 88% of the estimated resources and about 89% of the contained manganese using
the overhand cut-and-fill mining method. While we are only at the PEA level of studies, we are
extremely encouraged by these preliminary results.”
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 d omestic 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 Minne sota, 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
5
Valerie Kimball
Director Investor Relations
720-933-1150
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 o f 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.