North Peak Resources (OTCQB: NPRLF) has announced promising assay results from an 11-hole aircore drilling program targeting a historic waste rock pile at its Prospect Mountain Mine complex in Nevada. The program aimed to better characterize the grade distribution of material previously estimated to be around 240,000 short tons, based on a 2010 study.
Key highlights from the assay results include a best sample grading 2.34 grams per tonne of gold (g/t Au) and 68 grams per tonne of silver (g/t Ag). Weighted average grades for the completed holes ranged from 1.28 g/t Au and 34 g/t Ag in hole PM25-007S over a 10-foot interval, down to 0.24 g/t Au and 18.8 g/t Ag in hole PM25-002S over a 20-foot interval. Notably, no holes returned unmineralized results, suggesting widespread mineralization within the pile.
In parallel, North Peak completed a more extensive 2025 exploration drilling program, comprising 14 holes totaling 4,194 meters. Assay results from this larger campaign are anticipated in the first quarter of 2026.
The company also confirmed it holds a permit for 1,000 tons per day (tpd) of underground mining and off-site processing. To further assess the economic viability of the waste rock pile material, North Peak plans to conduct metallurgical tests, including bottle roll and column leach tests on bulk samples. These tests are crucial for determining the suitability of the material for toll leaching operations.
Rupert Williams, CEO of North Peak, expressed optimism about the findings. “The aircore sampling program has demonstrated that the waste rock pile is mineralized,” he stated. “We will continue with metallurgical test work to assess the suitability of the material for toll leaching with third-party operators.”
Williams also emphasized that while the company has a permit for underground mining and processing, further work is required to fully define the extraction and transportation process for this finite resource project. The primary objective for North Peak remains the discovery of economic quantities of gold mineralization within the broader Prospect Mountain Property. The recently concluded 2025 drilling program focused on four accessible areas, and future exploration efforts are planned to build upon these results, testing new cross-fault structures believed to control mineralization within the Eureka camp.
The assay results underscore the potential of the waste rock pile as a near-term resource, though its ultimate economic contribution will depend on metallurgical recoveries and processing costs. The company’s strategy of leveraging existing permits and exploring off-site processing options could offer a capital-efficient path to generating cash flow, should the metallurgical studies prove favorable.
**Technical and Business Context:**
The strategy of evaluating historical waste rock piles is a common practice in the junior mining sector. It represents a lower-risk exploration target compared to greenfield exploration, as the material has already been extracted and is readily accessible. The key challenges lie in:
* **Grade Variability:** Waste rock piles can exhibit significant grade heterogeneity, making representative sampling and accurate grade estimation critical. The aircore drilling program provides a more detailed understanding of this variability than historical surface sampling.
* **Metallurgical Recovery:** The mineralogy of gold and silver in waste rock can be complex, potentially impacting extraction efficiencies. Bottle roll and column leach tests are essential to establish recovery rates and optimize leaching parameters, which directly influence the economic viability.
* **Processing Costs:** Utilizing toll leaching services requires careful consideration of contract terms and costs. This approach can reduce the need for significant capital investment in on-site processing facilities, particularly for smaller or finite resources.
* **Permitting and Logistics:** While North Peak holds a mining permit, the extraction and transportation plan must be finalized. This involves logistical considerations, environmental impact assessments, and regulatory approvals for moving material to a third-party leach pad.
The Prospect Mountain Mine complex’s location in the Battle Mountain Eureka trend, a historically productive mining district, adds a layer of geological potential. The identified styles of mineralization – Carlin-type, Carbonate Replacement Deposits (CRD), and porphyry-related skarn – suggest a complex geological history and the possibility of larger, primary ore bodies on the property. The successful evaluation of the waste rock pile could provide valuable data and financial support for the company’s broader exploration objectives.
The company’s founding team’s track record, having been involved with successful ventures like Kirkland Lake Gold and Rupert Resources, provides a level of investor confidence. Their expertise in acquiring assets and applying modern exploration techniques is a significant factor in assessing North Peak’s long-term potential.
**Summary of Assay Results and Exploration Program:**
| Hole ID | Depth (ft) | Au (g/t) | Ag (g/t) |
| :——— | :——— | :——- | :——- |
| PM25-001S | 30 | 0.94 | 26.3 |
| PM25-002S | 20 | 0.24 | 18.8 |
| PM25-003S | 20 | 0.29 | 9.2 |
| PM25-004S | 52 | 0.95 | 25.7 |
| PM25-005S | 61 | 0.31 | 13.9 |
| PM25-006S | 15 | 0.72 | 21.00 |
| PM25-007S | 10 | 1.28 | 34.00 |
| PM25-008S | 20 | 0.29 | 13.50 |
| PM25-009S | 39 | 0.29 | 13.50 |
| PM25-010S | 20 | 0.67 | 17.75 |
| PM25-011S | 10 | 0.40 | 19.00 |
*Table 1: Weighted average composite results for each aircore hole. The 2025 exploration program consists of 14 holes totaling 4,194 meters, with results expected in Q1 2026.*
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