Eagle Mountain Mining has formalised a joint venture with Nittetsu Mining for the Oracle Ridge copper project in Arizona, with Nittetsu committing US$20 million to advance exploration and development while managing the operation.
- Nittetsu acquires 80% stake, Eagle Mountain retains 20% free-carried
- US$20 million funding to cover exploration, debt repayment, and mine acquisition
- 6,000m drilling and geophysical surveys planned to explore resource extensions
- Nittetsu holds 100% offtake rights and manages the joint venture
- Eagle Mountain’s US$7.25 million debt to Vincere to be extinguished
Binding Agreements Finalise Oracle Ridge Joint Venture
Eagle Mountain Mining Limited (ASX:EM2) has taken a decisive step forward by signing binding agreements with Japan’s Nittetsu Mining Co. to form a joint venture over the Oracle Ridge copper project in Arizona. Under the deal, Nittetsu will hold an 80% stake and manage the project, while Eagle Mountain retains a 20% interest, free-carried until Nittetsu’s contributions reach US$20 million (~A$28 million).
This JV marks a significant milestone following Nittetsu’s board approval in March 2026, confirming their commitment to invest in advancing Oracle Ridge after months of due diligence and negotiation. The arrangement not only injects vital capital but also transfers operational management to a well-capitalised partner with extensive mining experience, including copper operations in Chile.
Funding Package and Strategic Debt Management
Nittetsu’s initial US$3.5 million contribution will extinguish Eagle Mountain’s US$7.25 million debt to Vincere Resource Holdings LLC by paying US$2.5 million, while also exercising an option to acquire the Oracle Ridge mine from Marble Mountain Ventures for US$1 million. These payments formalise the joint venture and clear significant financial encumbrances, allowing the project to progress unencumbered.
Beyond this, Nittetsu will fund exploration and development activities up to US$20 million over four years, including environmental permitting and feasibility studies. Eagle Mountain is free-carried through this phase but faces potential dilution if it opts not to contribute to costs beyond this milestone, with dilution calculated at 1% per US$450,000 of additional expenditure.
Exploration Plans and Resource Potential
Technical plans under Nittetsu’s management include a 6,000-metre drilling program targeting extensions near the existing Mineral Resource Estimate (MRE) of 28.2 million tonnes grading 1.35% copper, 11.06 grams per tonne silver, and 0.16 grams per tonne gold. A trial geophysical survey using Induced Polarization will assess subsurface mineralisation, while operational surface infrastructure at Oracle Ridge will be re-established to support these activities.
The MRE, updated in November 2023, contains approximately 380,000 tonnes of copper, 10 million ounces of silver, and 142,000 ounces of gold, underscoring the project’s high-grade potential. Nittetsu’s 100% offtake rights on arm’s length commercial terms provide strategic control over production marketing.
Partnership Dynamics and Future Prospects
Eagle Mountain’s Executive Director Fabio Vergara expressed optimism about the JV, highlighting the collaborative effort over the past 10 months to reach this agreement. He acknowledged the critical support from Vincere and Marble Mountain Ventures and praised Nittetsu’s expertise as a strong operational partner. The company will continue to assist during the handover and simultaneously evaluate new project opportunities, including advancing the Silver Mountain project.
This development builds on Eagle Mountain’s recent progress, including a $1.66 million capital raise and renegotiated loan terms with Vincere, setting the stage for accelerated exploration and potential mine restart. The partnership with Nittetsu also diversifies Eagle Mountain’s exposure geographically and operationally, leveraging Nittetsu’s proven track record in copper mining and resource development in Chile and now North America.
Given the scale of investment and operational control resting with Nittetsu, the market will be watching closely how swiftly the JV advances drilling results and permitting, which will be critical to defining the timeline towards commercial production. This move follows the earlier Nittetsu board approval that paved the way for these binding agreements, underscoring the strategic importance of Oracle Ridge within Nittetsu’s global portfolio.
Bottom Line?
The JV with Nittetsu unlocks crucial funding and expertise for Oracle Ridge, but Eagle Mountain’s future stake hinges on ongoing contributions beyond the initial US$20 million milestone.
Questions in the middle?
- How will initial drilling results influence the JV’s development timeline and capital allocation?
- What are the risks and potential impacts if Eagle Mountain chooses to dilute its interest beyond the free-carried phase?
- How quickly can Nittetsu navigate permitting and operational hurdles to advance towards production?