Pathfinder Tonopah
Hall Mine
Pathfinder Tonopah's copper, molybdenum and silver mine will provide a domestic supply of critical minerals from a historic mining site. Pathfinder Tonopah's SmartMine™ process will utilize leading technologies to mine responsibly, using on-site generated solar energy and an emphasis on efficiently multitasking resources in the mine complex.
Geology
The Hall Mine Complex is centered on a porphyry Cu-Mo system in the Western flanks of the San Antonio Mountains. The Hall Stock is predominantly quartz monzonite porphyry and host of much of the Cu-Mo mineralization. The Complex was mined for molybdenum by Anaconda and Cyprus in the 1980s and 1990s, and the overlying supergene blanket was mined for copper by Equatorial in the late 1990s and early 2000s.
Pathfinder Tonopah’s current exploration work is focused on understanding the molybdenum (Mo), copper (Cu) and silver (Ag) resources and their upside potential, reviewing their technical aspects, and evaluating how to most beneficially unlock their value. The 2014 hypogene molybdenum resources include Measured and Indicated Resources of about 566 Million Tons averaging 0.067% Mo plus 149 Million Tons of Inferred Resource averaging 0.052% Mo. The historic copper resource consists of a supergene blanket containing about 100 Million Tons averaging 0.37% Cu. Re-assay of preserved pulps indicates that there is silver potential and exploration is currently evaluating the extent and quality of silver mineralization.