Sunshine Silver Mining & Refining is advancing the next chapter of American silver through the planned return to production of the historic Sunshine Mine. Since acquiring the Sunshine Complex in 2010, the Company has invested over $200 million to expand its land position, modernize infrastructure, deploy advanced exploration technologies and support its plan to return the mine to production in 2028.
Located in Idaho’s prolific Silver Valley, the most productive silver region in the United States, the Sunshine Complex is home to North America’s highest-grade large silver resource, with 104 million ounces of Indicated silver resources at 30 ounces per ton and 160 million ounces of Inferred silver resources at 23 ounces per ton. With a 140-year operating history, significant existing infrastructure and meaningful exploration upside, Sunshine represents one of the most important silver assets in the United States.
In addition to its silver endowment, Sunshine is uniquely positioned to support future domestic refining capacity for minerals essential to U.S. national security and high-tech industries, including copper and antimony. This rare combination of high-grade silver resources, permitted refining optionality and existing infrastructure positions the Sunshine Complex as a strategic platform for American silver and critical minerals.
“The Sunshine Mine is the iconic jewel of American silver mining – with the potential to be the only U.S. operation that integrates mine and refinery into a direct pipeline for certified silver and critical minerals.”
– Dr. Thomas Kaplan, Chairman, The Electrum Group
Sunshine Silver Mining & Refining Company owns 100% of one of the largest and highest-grade undeveloped silver deposits in North America—anchored by substantial infrastructure and major permits in hand for potential silver and antimony refining capacity.
Sunshine brings together high-grade silver resources and permitted refining optionality for key critical minerals.
Existing infrastructure, key permits and prior investment support Sunshine’s plan to return the mine to production.
Modern exploration across a district-scale land position creates significant opportunity for future resource growth.
Sunshine Silver Mining & Refining is guided by a clear purpose: to advance the next chapter of American silver through responsible mining, disciplined development and long-term stewardship. As we work to return the Sunshine Mine to production, our values shape how we operate, how we make decisions and how we build lasting trust with our people, partners and communities.
Strengthening America’s supply chain security through the responsible domestic production of silver and critical minerals.
Advancing modern mining practices with a focus on safety, environmental stewardship, accountability and operational excellence.
Creating lasting benefits for Idaho’s Silver Valley through local investment, workforce development and respectful collaboration with stakeholders.
Sunshine Silver Mining & Refining Company was established by The Electrum Group in 2010 to acquire and advance the Sunshine Mine. Following the completion of the offering, Electrum is expected to remain Sunshine’s majority stockholder, providing strategic alignment, continuity and a long-term perspective as the Company advances its plan to return the Sunshine Mine to production.
The Electrum Group is a private investment group founded by Dr. Thomas Kaplan with a focus on precious metals and critical minerals. Over several decades, Electrum and its principals have been involved in the founding and development of resource companies built around significant mineral assets, bringing experience across exploration, development, capital formation and long-term value creation.
The Electrum Group has a long history of founding and advancing companies built around world-class discoveries made by its geological team. Notable examples include:
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