Antimony
National defense & semiconductors
Copper
Core to electrification and grid security; vital for EVs and renewables
Germanium and Gallium
AI, 5G, aerospace and solar technologies
Sunshine is the only U.S. site permitted to build a refinery allowing large-scale antimony production. This capability has taken on new urgency since China, introduced export controls in 2024 and 2025.
A potential new Sunshine Antimony Plant could allow us to process antimony-bearing concentrate from the Sunshine Mine and toll-process external (third party) antimony-bearing concentrates, which together could provide a pathway for the Sunshine Complex to become one of the most significant centralized hubs for producing refined antimony in North America. We are progressing design and planning for the Sunshine Antimony Plant. Based on the potential capacity of the plant and forecasts of U.S. demand growth, the Sunshine Antimony Plant could supply up to 60% of U.S. demand using antimony-bearing concentrate from the Sunshine Mine, as well as from third party sources.
In addition, Sunshine’s hydrometallurgical facility can produce COMEX-grade cathode copper, linking the complex to U.S. electrification and energy transition supply chains.
We are also exploring our ability to process other critical minerals such as germanium and gallium in the future. Gallium and germanium are two minerals essential for AI, 5G, aerospace and solar technologies. China dominates production and has imposed export restrictions to the US.
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