Lassen County, California

Hayden Hill Gold-Silver Project

New three-dimensional modelling shows Hayden’s gold is structurally controlled—with high-grade targets missed by historical drilling. Drilling will target data-defined higher-grade mineralization, focusing on key structural corridors and deeper vein extensions below where AMAX mined gold.

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Unlocking Opportunities

Targeting High-Grade Feeder Zones Missed by Historical Drilling

Hayden Hill Gold-Silver Project — Four Nines Gold corporate video

Previously mined as a shallow disseminated deposit with no drilling for nearly three decades.

480,000 oz Au and 1.3 million oz Ag historical production

New Model: three-dimensional modeling all data confirm Hayden Hill is a Low Sulfidation epithermal system, with gold interpreted to be hosted in vein structures exposed at surface to continue at depth.

Team of top geologist with a track record of multiple discoveries that advanced into significant producing mines across North and South America.

Fully funded and drilling soon, testing high-priority structural corridors and deeper feeder zones

A Storied History

Discovery of the deposit is credited to a party of travelers in 1870. High-grade gold was found in a spring on the south side of Hayden Hill. High-grade production, along veins, from multiple underground mines.

The modern era of mining at Hayden Hill commenced in the mid-1970s with exploration programs by Fischer-Watt Mining Company among others. A series of joint ventures with Lacana Mining Corporation and Peco Resources Ltd. for exploration and development, including drilling, followed in the 1980s.

The Four Nines team recognizes significant exploration potential in the existing gold-silver deposit and significant additional opportunity to follow up on high grade drilling intercepts

Hayden Hill target zones map
Hayden Hill Project

Unlocking Opportunity

  • Hayden hosts a high-quality epithermal gold system with at least three primary mineralized zones
  • Data and modern three-dimensional modeling show multiple untested high-grade feeder zones open along strike and at depth, highlighting strong potential to expand and define additional gold zones.
  • Drilling will target data-defined higher-grade mineralization, focusing on key structural corridors and deeper vein extensions. The best unmined historical intercept—62.6 m @ 10.6 g/t Au and 15 g/t Ag*—demonstrates the system’s capacity for thick, high-grade mineralization.
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* Best unmined drill intercept is a historical result; no drill core is available for verification.

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