RPT Ground Magnetic Survey – Northwest Structural Corridor

In July 2011, Humboldt Mining Company commissioned a detailed ground magnetic survey of the  Humboldt Mining claims, which includes our patented Prunty Mine claims. The work was carried out by Chris Magee of Magee Geophysical Services, Reno, Nevada. Interpretation of the data was completed by geophysicist J.L. Wright of Spring Creek (Elko), Nevada.

The survey acquired approximately 24 line-miles of data along north-south transects spaced 100 meters apart. The goal was to map subsurface magnetic variations to identify potential intrusive bodies and structural zones favorable to gold mineralization.

Data processing followed industry-standard methods. The results highlight a mix of magnetic highs and lows. Areas of strong magnetic response—highlighted in red hatching—are interpreted as granodiorite or rhyolite intrusives. These areas align closely with key structures and historic mineralized zones identified in prior drilling and mapping.

Unaltered sedimentary rocks typically show little magnetic activity and appear as flatter zones. In contrast, the surrounding volcanic units, particularly the Jarbidge Rhyolite, show moderate magnetic variation. The most significant magnetic features follow a major northwest-trending corridor, interpreted by Wright as the primary structural control on mineralization—what we now call the Northwest Corridor.

The map overlay also includes:

• Green Line: Boundary of Humboldt Mining Company holdings (Robbie Claim Group)

• Yellow Box: Our patented Prunty Mine claims (Virginia and Vanity Fair)

• Blue Line: Adjacent patented ground not currently under Humboldt control

This magnetics data continues to guide drilling priorities and exploration targeting. Two of the strongest magnetic "beads" lie within our patented claims, reinforcing the strategic importance of the Prunty Mine area.