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Dakota Gold Corp. (NYSE American: DC) (“Dakota Gold” or the “Firm”) is offering an replace on the metallurgical testing program (the “Met Program”) designed to tell the Feasibility Examine (“FS”) on the Richmond Hill Oxide Heap Leach Gold Mission (“Richmond Hill” or the “Mission”).
The FS Met Program is scheduled for completion in Q3 2026 with staged testing and milestone reporting all through. In depth metallurgical drilling was accomplished in 2025 (Map 1) and the Firm expects to ship 4,000 kg of fabric to Forte Dynamics Lab (the “Lab”) that characterize 28 potential geo-metallurgical domains, and full greater than 30 column assessments. So far, the Firm has obtained outcomes for 2 preliminary composites from the MW3 zone within the northern a part of the property.
Highlights from this replace:
- Excessive-grade areas potential for early mining. The Firm is evaluating mine plan sequence alternatives within the FS and can replace the useful resource in 2026 to incorporate 200 drill holes accomplished within the 2025 drill marketing campaign. The 2 columns examined from the MW3 zone graded 0.96 grams per tonne gold (“g/t”) (“Au”) and 23.1 g/t silver (“Ag”), and 0.53 g/t Au and 17.3 g/t Ag, respectively. The present useful resource mannequin for the MW3 zone doesn’t but embrace high-grade intercepts reported from drilling in 2025, corresponding to RH25C-164 intersecting 1.94 g/t Au over 60.0 meters (116 gram meters) and RH25C-169 intersecting 2.78 g/t Au over 39.3 meters (109 gram meters).
- Column recoveries ranging between 61%-65% achieved inside lower than 60 days. Two columns of 0.96 g/t Au materials had been examined at a 1″ and 0.5″ crush measurement and two columns of fabric grading 0.53 g/t Au had been examined at a 0.75″ and 0.5″ crush measurement. Historic column testing targeted on the Richmond Hill mine demonstrated materials categorised as oxide by St. Joe achieved a mean restoration of 89%, and the present outcomes are complimentary and in keeping with historic variability testing (Appendix A). The samples had been chosen to carry out first move characterization and classification. Deportment evaluation has supplied steering on additional check work required to optimize recoveries and course of design.
- Potential CAPEX and OPEX efficiencies with constructive response to heap leaching amenability elements. The preliminary compact permeability assessments have properties which give higher flexibility for gear choice and stacking methodology. Additional testing of crush measurement together with a “Run-of-Mine” check program has been initiated to check the impression of eliminating crushing for sure materials.
“The FS and Met Program characterize an vital step within the analysis and de-risking course of for Richmond Hill. Historic metallurgical assessments exhibited variability in column recoveries, and related variability is anticipated within the present Program. The outcomes are in keeping with my expertise with comparable heap leach gold deposits and help the potential for low-cost leach heap processing as envisioned in our July IACF. Over the subsequent 12 months, we are going to finalize our FS metallurgical testing and trade-off research to help the FS and to tell future allowing actions,” mentioned Jack Henris, President and COO of Dakota Gold.
Mission leverage to Gold Costs and Restoration
Richmond Hill reveals robust leverage to rising gold costs. The Preliminary Evaluation with Money Move (“IACF”) printed in July 2025 demonstrates that at gold costs exceeding $4,000 per ounce and at numerous final gold restoration situations, the Mission NPV5% will be in extra of $4 billion.
“I am very excited to be a part of the group that’s advancing the Richmond Hill gold challenge in the direction of a possible multi-billion NPV alternative, in probably the perfect gold value environments we have seen in a long time. We are going to proceed to advance the Mission with urgency as we work in the direction of manufacturing in 2029,” mentioned Shawn Campbell, CFO of Dakota Gold.
Desk 1 – IACF; After-tax NPV5% Measured, Indicated and Inferred mine plan sensitivity to gold restoration
| Gold Restoration | |||||
| 68.3% | 72.6% | 76.9% | 81.1% | 85.4% | |
| Gold Worth | NPV5% in US$ Million | ||||
| $2,350 | $1,389 | $1,571 | $1,752 | $1,932 | $2,113 |
| $2,750 | $1,915 | $2,127 | $2,338 | $2,549 | $2,761 |
| $3,150 | $2,439 | $2,682 | $2,924 | $3,167 | $3,409 |
| $3,550 | $2,964 | $3,237 | $3,511 | $3,784 | $4,057 |
| $3,950 | $3,488 | $3,792 | $4,096 | $4,401 | $4,705 |
| $4,150 | $3,750 | $4,070 | $4,389 | $4,709 | $5,029 |
Metallurgical Program
The scope of labor to finish the FS examine contains ore characterization; column leach testing; comminution and crushing research; course of optimization and restoration; and deleterious parts and environmental testing. The Firm has shipped roughly 10% of the fabric to the Lab up to now and continues to assemble materials for composite testing. The check work is being knowledgeable by the outcomes up to now in addition to the historic work at Richmond Hill.
Samples from 12 drill holes from the Firm’s 2025 drill marketing campaign had been composited for the present MW3 zone assessments. Two columns of fabric grading 0.96 g/t Au had been examined at a 1″ and 0.5″ crush measurement. The recoveries for these columns had been 61% and 64.8%, respectively. Two columns of fabric grading 0.53 g/t Au had been examined at a 0.75″ and 0.5″ crush measurement and the recoveries for these columns had been 61.6%, and 64.8%, respectively. The FS metallurgical program will embrace evaluation to know whether or not both encapsulation or minerology impacted final restoration.
Characterization outcomes introduced at the moment from the M3W zone materials didn’t comprise preg-robbing materials. Moreover, based mostly on QEMSCAN and ICP-OES, the fabric didn’t determine any deleterious parts or mineralogy. These outcomes will information future trade-off research on the requirement for agglomeration.
The Richmond Hill historic feasibility examine was carried out by a number of labs as a part of the metallurgical program to assemble and function the historic Richmond Hill mine. The 51-column assessments that had been carried out, had a variety of restoration within the column work, nonetheless, the sub-set as soon as categorised as oxides had a mean restoration of 89% (Appendix A-B). The historic Richmond Hill metallurgical knowledge doesn’t element the method for classifying the 31-column materials as oxide ore. As well as, regionally, Coeur Mining discloses variable recoveries from 71% to 80% within the Wharf Mine Operations, South Dakota Technical Report Abstract dated December 31, 2021.
Map 1 – Location of historic heap leach samples and 2025 metallurgical drill holes
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About Dakota Gold Corp.
Dakota Gold is increasing the legacy of the 145-year-old Homestake Gold Mining District by advancing the Richmond Hill Oxide Heap Leach Gold Mission to industrial manufacturing as quickly as 2029, and outlining a high-grade underground gold useful resource on the Maitland Gold Mission, each situated on non-public land in South Dakota.
Subscribe to Dakota Gold’s e-mail listing at www.dakotagoldcorp.com to obtain the newest information and different Firm updates.
Certified Particular person and S-Ok 1300 Disclosure
James M. Berry, a Registered Member of SME and Vice President of Exploration of Dakota Gold Corp., is the Firm’s designated certified particular person (as outlined in Subpart 1300 of Regulation S-Ok) for this information launch and has reviewed and authorized its scientific and technical content material.
High quality Assurance/High quality Management consists of standard insertion of licensed reference supplies, duplicate samples, and blanks into the pattern stream. Samples are submitted to the ALS Geochemistry pattern preparation facility in Winnipeg, Manitoba. Gold and multi-element analyses are carried out on the ALS Geochemistry laboratory in Vancouver, British Columbia. ALS Minerals is an ISO/IEC 17025:2017 accredited lab. Examine samples are submitted to Bureau Veritas, Vancouver B.C. as an umpire laboratory. Assay outcomes are reviewed, and discrepancies are investigated previous to incorporation into the Firm database.
Ahead-Wanting Statements
This communication incorporates forward-looking statements throughout the which means of Part 27A of the Securities Act of 1933, as amended, and Part 21E of the Securities Alternate Act of 1934, as amended. When used on this communication, the phrases “plan,” “goal,” “anticipate,” “imagine,” “estimate,” “intend,” “potential,” “will” and “anticipate” and related expressions are supposed to determine such forward-looking statements. Any specific or implied statements contained on this communication that aren’t statements of historic reality could also be deemed to be forward-looking statements, together with, with out limitation: our expectations relating to extra drilling, metallurgy and modeling; our expectations for the advance and development of the mineral assets and potential for conversion of mineral assets into reserves; completion of a feasibility examine, and/or allowing; our expectations relating to free money stream and future financing, and our total expectation for the potential for near-term manufacturing on the Richmond Hill challenge. These forward-looking statements are based mostly on assumptions and expectations that is probably not realized and are inherently topic to quite a few dangers and uncertainties, which might trigger precise outcomes to vary materially from these statements. These dangers and uncertainties embrace, amongst others: the execution and timing of our deliberate exploration actions; our use and analysis of historic knowledge; our means to attain our strategic objectives; the state of the financial system and monetary markets typically and the impact on our trade; and the marketplace for our widespread inventory. The foregoing listing will not be exhaustive. For extra info relating to elements that will trigger precise outcomes to vary materially from these indicated in our forward-looking statements, we refer you to the danger elements included in Merchandise 1A of the Firm’s Annual Report on Type 10-Ok for the fiscal 12 months ended December 31, 2024, as up to date by annual, quarterly and present stories that we file with the SEC, which can be found at www.sec.gov. We warning traders to not place undue reliance on the forward-looking statements contained on this communication. These statements converse solely as of the date of this communication, and we undertake no obligation to replace or revise these statements, whether or not because of new info, future occasions or in any other case, besides as could also be required by regulation. We don’t give any assurance that we’ll obtain our expectations.
All references to “$” on this communication are to U.S. {dollars} until in any other case acknowledged.
Appendix A – Historic Richmond Hill oxide metallurgical column check work by St. Joe
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Appendix B – Historic Richmond Hill metallurgical all column check work by St. Joe with purple circle displaying preliminary column outcomes for M3W composite
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To view the supply model of this press launch, please go to https://www.newsfilecorp.com/launch/278564
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