Coast Copper Highlights its Sweeney Silver Project and Congratulates Surge Copper
Press Release
March 2, 2026
Vancouver, BC – Coast Copper Corp. (“Coast Copper” or the “Company”; TSX-V: COCO)is pleased to highlight its Sweeney mineral claim holdings in the heart of the Huckleberry mine camp in northwestern British Columbia (“BC”). The Sweeney project includes the past-producing, road accessible high-grade silver Emerald mine (see Figure 1). Coast Copper also wishes to congratulate its neighbor Surge Copper Corp. (“Surge”) on the significant announcement made on February 23, 2026, by the BC provincial government noting that Surge’s Berg Project will receive BC Critical Minerals Office support as an advanced project1.
Adam Travis, CEO, comments: “I’ve enjoyed working on our Sweeney property in the heart of the Huckleberry camp and collaborating with neighbors Surge and Imperial Metals Corporation. This announcement underscores the importance of advancing critical minerals projects through modern exploration and having strong partnerships with communities, governments and First Nations, values which we also share. Historical mining of silver (“Ag”), copper (“Cu”), lead (“Pb”) and zinc (“Zn”) on the Emerald Vein exploited only a small portion of a greater than 1-kilometer-long structure, while subsequent drilling on the crosscutting Miya Vein confirmed similar polymetallic mineralization with the addition of gold (“Au”) values up to 7 grams per tonne (“g/t”) Au in 2012 drilling. Our 2024 – 2025 work has identified additional strong targets, including areas newly exposed by glacial retreat. In 2026, we are planning surface geological, geochemical, and geophysical programs which will be funded from our existing treasury, including cash and marketable securities.”
Sweeney Project (see Figure 1 and news release dated October 7, 2024)
The road accessible Sweeney project (1,492 hectares) is centrally located in the Huckleberry mine camp and is 7 km north-northwest of the past producing Huckleberry mine, 3 km west of Huckleberry Mines Ltd.’s Whiting Creek deposit and 8 km southeast of Surge’s Berg deposit2.
Historical exploration was focused in and around the Emerald mine where mining occurred intermittently between 1951 and 1968. Unclassified historical reserves were reported on the Emerald Vein of 40,800 tonnes grading 355 grams per tonne (“g/t”) Ag, 8.23% Pb, 9.49 % Zn and 1.13 g/t Au with ore zones noted open to depth (CIM Special Volume 37, page 186) 3,4. No drilling or underground exploration was completed on the property between 1971-2011. In 2012 a shallow 30 diamond drillhole program with an average drillhole length of 52 meters (“m”) focused on the Miya Vein. The Miya Vein is separate from and crosscuts the north-south trending Emerald Vein trend at 300 degrees. The 2012 drill program covered 350 m of strike length and highlighted drill results include 5:
Sweeney – Miya Vein 2012 Drilling Highlights
| Drillhole I.D. | From | To | Length (m)* | Au (g/t) | Ag (g/t) | Cu% | Pb% | Zn% |
| M12 – 04 | 23.80 | 29.57 | 5.77 | 0.83 | 206.19 | 0.67 | 1.70 | 5.16 |
| M12 – 12 | 69.90 | 72.18 | 2.28 | 3.06 | 158.04 | 0.60 | 3.09 | 6.63 |
| including | 69.90 | 70.59 | 0.69 | 7.03 | 222.05 | 1.35 | 4.30 | 12.70 |
| M12 – 14 | 17.97 | 21.08 | 3.11 | 1.23 | 253.10 | 0.69 | 3.00 | 9.14 |
| M12 – 15 | 24.44 | 29.86 | 5.42 | 0.83 | 163.53 | 0.40 | 0.97 | 5.26 |
| including | 24.44 | 25.70 | 1.26 | 3.44 | 612.00 | 1.13 | 3.60 | 7.52 |
| M12 – 19 | 28.17 | 33.48 | 5.31 | 0.51 | 71.42 | 0.28 | 1.32 | 4.54 |
* There is insufficient geological information available to determine true widths of mineralization.
Next Steps
The Company is planning further surface programs in underexplored areas of the Sweeney property on trends of known veins and structures as well as possible geophysical surveys to help identify these structures.
Qualified Persons
The technical information contained in this news release has been prepared, reviewed, and approved by Wade Barnes, P.Geo. (BC), Coast Copper’s geological consultant and a Qualified Person within the context of the Canadian Securities Administrators’ NI 43-101; Standards of Disclosure for Mineral Projects.
About Coast Copper Corp.
Coast Copper’s flagship projects are the Copper Kettle post-discovery Cu-Au-Mo project located in the Island Copper Cluster on northern Vancouver Island, the former producing Cu-Au Empire mine also located on northern Vancouver Island and the former producing Emerald and Virginia Silver mines located near the Huckleberry mine and Smithers in northern BC. Coast Copper has an additional 18 projects in BC that are available for acquisition, partnering or option that are strategically located in seven advanced mining camps that include the Toodoggone, Golden Triangle, Anyox, Goliath Resources (Golddigger), Babine, Bralorne and Sullivan, providing exposure and leverage to millions of dollars being spent on neighboring properties. Coast Copper’s strategy is to optimize the value of each mineral property within our portfolio through a combination of prospect generation and discovery-focused, high-impact exploration while minimizing share dilution through active deal-making.
On Behalf of the Board of Directors:
“Adam Travis”
Adam Travis, Chief Executive Officer and Director
For further information, please contact:
Adam Travis, CEO
Coast Copper Corp.
409 Granville Street, Suite 904
Vancouver, BC, V6C 1T2, Canada
P: 877-578-9563
E: adamt@coastcoppercorp.com
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