Briefing
Over the first 23 months (payback period) of the mine plan, inferred resources in the mine plan account for 11% of the scheduled mine production tonnage. Key points: Over the first 23 months (payback period) of the mine plan, inferred resources in the mine plan account for 11% of the scheduled mine production tonnage; As a function of these operational and physical constraints, it can be noted that only 63% of the August 2026 MRE inventory (0.9% Cu cut off grade), or 62% of the CuEq metal content was realized in the PEA production sch; This table displays that only 63% of the August 2026 MRE inventory at a 0.9% cut-off grade (COG), or 62% of the copper-equivalent metal content was realized in the PEA production schedule due to these constraints; Collectively, these dilution factors have been incorporated into the mine production schedule as modifying factors, ensuring that tonnage and grade forecasts reflect practical mining conditions and achievable performance; The total initial capital cost for the project is C$560 million; and life-of-mine sustaining costs are C$884 million; The overall operating cost over the life-of-mine of the project is C$6,280 million, or an average of C$125/t milled. This brief is based on the cited source artifact and is intended as a research entry point, not a replacement for the original source or EGM canonical data tables.
Source Notes
Over the first 23 months (payback period) of the mine plan, inferred resources in the mine plan account for 11% of the...
Extractive summary evidence · source
As a function of these operational and physical constraints, it can be noted that only 63% of the August 2026 MRE inventory...
Extractive summary evidence 2 · source
This table displays that only 63% of the August 2026 MRE inventory at a 0.9% cut-off grade (COG), or 62% of the...
Extractive summary evidence 3 · source
Collectively, these dilution factors have been incorporated into the mine production schedule as modifying factors, ensuring that tonnage and grade forecasts reflect...
Extractive summary evidence 4 · source
Extracted Document Text
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# NI 43-101 Technical Report & Preliminary Economic Assessment Source: https://fireflymetals.com.au/wp-content/uploads/2026/09/NI-43-101-Technical-Report-Preliminary-Economic-Assessment.pdf Fetched: 2026-09-23T00:20:32.294+00:00 Source artifact: 1c676381-a52b-4267-87b0-739a70af0852 Normalizer input: text ## Content # NI 43-101 Technical Report & Preliminary Economic Assessment Green Bay Ming Mine Copper-Gold Project NI 43-101 Technical Report & Preliminary Economic Assessment Newfoundland and Labrador, Canada Prepared for: FireFly Metals Ltd. 161 Bay Street - Suite 4430 Toronto, ON, Canada, M5J 2S1 Prepared by: Ausenco Engineering Canada ULC 320 Bay Street, Suite 603 Toronto, ON, Canada, M5H 4A6 Effective Date: August 14, 2026 Report Date: September 22, 2026 List of Qualified Persons: Bernie Yen Jui Ting, P.Eng., Lead Engineer, T Engineering Brian Thomas, P.Geo., Principal Resource Geologist, WSP Canada Inc Craig Norman Hall, P.Eng., Managing Principal, Knight Piésold Ltd. Daniel Skruch, P.Eng., Senior Environmental Engineer, Egis Canada Limited Patrick James McCann, P.Eng, Principal Engineer, Entech Mining Ltd. Paul Palmer, P.Eng., Senior Principal Geological Engineer, WSP Canada Inc Shawn George Russell, P.Eng., Senior Geotechnical Engineer, GEMTEC Consulting Engineers and Scientists Limited (Canada) Sheldon Smith, P.Geo., Senior Hydrologist, Stantec Consulting Ltd. Stephen Tarrant, P.Geo., Professional Geoscientist, GEMTEC Consulting Engineers and Scientists Limited (Canada) Thomas Tremayne Parrott, P.Eng., Principal Geotechnical Engineer, Entech Mining Ltd. Tommaso Roberto Raponi, P.Eng., Principal Metallurgist, Ausenco Engineering Canada ULC Certificate of Qualified Person Bernie Yen Jui Ting, P.Eng. I, Bernie Yen Jui Ting, P.Eng., as a Lead Engineer with T Engineering, (“T Eng”), with an office address of Suite 8-2857 Sherwood Heights Drive, Oakville Ontario, L6J 7J9, do certify that: 1. This certificate applies to the technical report titled “NI 43-101 Technical Report and Preliminary Economic Assessment of the Green Bay Ming Mine Copper–Gold Project,” Newfoundland and Labrador, Canada, that has an effective date August 14, 2026 and a report date of September 22, 2026 (the “Technical Report”). 2. I graduated from the University of Toronto with a Bachelor of Applied Science degree in Materials Science Engineering, and Master of Applied Science degree in Electrical and Computer Engineering in 2011. 3. I am a Professional Engineer registered with Professional Engineers and Geoscientists Newfoundland and Labrador (No. 12430), Professional Engineers Ontario (No. 100186379). 4. I have practiced my profession continuously for over 15 years with experience in the development, design, operation and commissioning of tailings and mine backfill systems, focusing backfill mix design, process design and optimization, both domestic and internationally. Examples of projects I have worked on include: Giant Mine Remediation Project, NexGen Rook I Project, Eldorado Gold Ormaque and Triangle UDS design, and Los Gatos Backfill Optimization. 5. I have read the definition of “Qualified Person” set out in the National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) and certify that by virtue of my education, affiliation to a professional association and past relevant work experience, I fulfil the requirements to be a “Qualified Person” for those sections of the Technical Report that I am responsible for preparing. 6. I have not visited the Ming Mine project site. 7. I am responsible for 1.14.2, 13.5, 16.8.8, 21.2.3, 24.6.4, 25.1.6, 25.2.5, 26.6 and 27 of the Technical Report. 8. I am independent of FireFly Metals Ltd. as independence is defined in Section 1.5 of NI 43-101. 9. I have had no previous involvement with the Ming Mine project. 10. I have read NI 43-101 and the sections of the Technical Report for which I am responsible have been prepared in compliance with that Instrument. As of the effective date of the Technical Report, to the best of my knowledge, information and belief, the sections of the Technical Report for which I am responsible contain all scientific and technical information that is required to be disclosed to make those sections of the Technical Report not misleading. Dated: September 22nd, 2026 “Signed and sealed” Bernie Yen Jui Ting, P.Eng. Page 1 of 1 Certificate of Qualified Person Brian Thomas, P.Geo. I, Brian Thomas, P.Geo. as a Senior Principal Geologist at WSP Canada Inc. (“WSP”) with an office address of Suite 100 – 33 Mackenzie Street, Sudbury, ON P3C 4Y1, do certify that: 1. This certificate applies to the technical report titled “NI 43-101 Technical Report and Preliminary Economic Assessment of the Green Bay Ming Mine Copper–Gold Project,” Newfoundland and Labrador, Canada, that has an effective date August 14, 2026 and a report date of September 22, 2026 (the “Technical Report”). 2. I am a graduate of Laurentian University with a B.Sc. in Geology from 1994. 3. I am a Professional Geologist registered with the Professional Geologists of Ontario (No. 1366) and Professional Engineers and Geoscientists Newfoundland and Labrador (No. 11897). 4. I have practiced my profession continuously for over 30 years with experience in mine geology and mineral resource evaluation of mineral projects nationally and internationally in a variety of commodities including 8 years of direct working experience in gold mining operations located in northern Ontario, 9 years of base metals experience based in Sudbury Ontario and 15 years of multi-commodity consulting experience with WSP and Golder Associates. 5. I have read the definition of “Qualified Person” set out in the National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) and certify that by virtue of my education, affiliation to a professional association and past relevant work experience, I fulfil the requirements to be a “Qualified Person” for those sections of the Technical Report that I am responsible for preparing. 6. I visited the Ming Mine project site on April 28th to 30th , 2026 for a duration of 3 days. 7. I am responsible for Sections 1.2, 1.4, 1.5, 1.6, 1.7, 1.8, 1.12, 2.4.2, 5, 6, 7, 8, 14, 24.3, 25.1.2, 25.2.1, 25.3.1, 26.3 and 27 of the Technical Report. 8. I am independent of FireFly Metals Ltd. as independence is defined in Section 1.5 of NI 43-101. 9. My prior involvement with the property that is the subject of the Technical Report consists of internal grade estimation for the Lower Footwall Zone completed in 2019 for Rambler Metals and Mining and as a QP for FireFly Metals for geology related sections (excluding resource estimate) of the 2024 and 2025 MRE technical reports. 10. I have read NI 43-101 and the sections of the Technical Report for which I am responsible have been prepared in compliance with that Instrument. As of the effective date of the Technical Report, to the best of my knowledge, information and belief, the sections of the Technical Report for which I am responsible contain all scientific and technical information that is required to be disclosed to make those sections of the Technical Report not misleading. Dated: September 22nd, 2026 “Signed and sealed” Brian Thomas, P.Geo. Page 1 of 1 Certificate of Qualified Person Craig Norman Hall, P.Eng. I, Craig Norman Hall, P.Eng., as a Managing Principal with Knight Piésold Ltd. with an office address of Suite 200 – 1164 Devonshire Avenue, North Bay, ON P1B 6X7, do certify that: 1. This certificate applies to the technical report titled “NI 43-101 Technical Report and Preliminary Economic Assessment of the Green Bay Ming Mine Copper–Gold Project,” Newfoundland and Labrador, Canada, that has an effective date August 14, 2026 and a report date of September 22, 2026 (the “Technical Report”). 2. I graduated from the University of Waterloo with a Bachelor of Applied Science degree in Geological Engineering in 2003. 3. I am a Professional Engineer registered with Professional Engineers and Geoscientists Newfoundland and Labrador (No. 11852) and Professional Engineers Ontario (No. 100075047). 4. I have practiced my profession continuously for over 23 years with experience in the development, design, operation and commissioning of tailings, mine waste, and water management facilities and other mining related surface infrastructure. mineral processing plants, focusing on gold and base metal flotation projects, both domestic and internationally. Examples of projects I have worked on include: Maritime Resource’s Point Rouse Project, Generation Mining’s Marathon Copper-Palladium Project, Sibanye Stillwater’s East Boulder Mine and Stillwater Mine, and Coeur Mining’s Palmarejo Mine. 5. I have read the definition of “Qualified Person” set out in the National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) and certify that by virtue of my education, affiliation to a professional association and past relevant work experience, I fulfil the requirements to be a “Qualified Person” for those sections of the Technical Report that I am responsible for preparing. 6. I visited the Ming Mine project site on June 18, 2025 for a duration of 1 day. 7. I am responsible for Sections 1.16.2, 2.4.4, 18.13, 18.14, 18.15, 18.16, 18.17, 20.2.5, 21.2.5, 24.6.3, 25.1.8, 25.1.9, 25.2.7, 25.2.8, 25.3.6, 25.3.7, 26.7, 26.8, 26.9 and 27 of the Technical Report. 8. I am independent of FireFly Metals Ltd. as independence is defined in Section 1.5 of NI 43-101. 9. I have had no previous involvement with the Ming Mine project. 10. I have read NI 43-101 and the sections of the Technical Report for which I am responsible have been prepared in compliance with that Instrument. As of the effective date of the Technical Report, to the best of my knowledge, information and belief, the sections of the Technical Report for which I am responsible contain all scientific and technical information that is required to be disclosed to make those sections of the Technical Report not misleading. Dated: September 22nd, 2026 “Signed and sealed” Craig Norman Hall, P.Eng. Page 1 of 1 Certificate of Qualified Person Daniel Skruch, P.Eng. I, Daniel Skruch, P.Eng., as a Senior Environmental Engineer with Egis Canada Limited, with an office address of 6800 Campobello Road, , Mississauga, ON L5N 2L8, do certify that: 1. This certificate applies to the technical report titled “NI 43-101 Technical Report and Preliminary Economic Assessment of the Green Bay Ming Mine Copper–Gold Project,” Newfoundland and Labrador, Canada, that has an effective date August 14, 2026 and a report date of September 22, 2026 (the “Technical Report”). 2. I graduated from the University of Toronto with a Bachelor of Applied Science degree in Chemical Engineering & Applied Chemistry in 2007, with a Master of Engineering in 2008. 3. I am a Professional Engineer registered with Professional Engineers and Geoscientists Newfoundland and Labrador (No. 12378), Professional Engineers Ontario (No. 100596544), and Engineers and Geoscientists British Columbia (No. 63382). 4. I have practiced my profession continuously for 15 years with professional experience in mine geochemistry, including geochemical characterization of waste rock, ore, overburden, and tailings; static and kinetic test program design and interpretation; and assessment of acid rock drainage and metal leaching potential for mine development and closure planning. Examples of projects I have worked on or contributed to include: Mayfair Fenn-Gib PFS, Generation Mining Marathon PGM Project EA and EIS, Agnico Eagle Canadian Malartic Mine site geochemistry, Tata Steel Minerals Canada Goodwood site geochemistry, and geochemical specialization for various sites across the Timmins Mine camp for Discovery Silver. 5. I have read the definition of “Qualified Person” set out in the National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) and certify that by virtue of my educ [Excerpt trimmed for readability. Open the original source for the complete filing or document.]