The ongoing drilling campaign is being informed using its recently completed 3D geologic model which leverages historical mine data collected over a 95-year period. Data has been inputted from over 180,000 meters of drilling from 3,500 historic drill-holes and hundreds of detailed historic mine geology maps capturing all major faults and veins, alterations, mineralization and stratigraphy.
The first campaign conducted in 2020, prior to completion of the 3D geologic model was directed at verify the historical reserve for upper area of the mine. The resources delineated in 2020 now form the basis of the PEA to assess the rapid restart potential, as presented in the table below:
|Inferred Mineral Resources||Tonnes (x1,000)||Pb
|Pb Lbs. (x1,000)||Ag
|Ag Ounces (x1,000)||Zn
|PbAg Inferred Mineral Resources||1,050||7.56||158,815||4.28||4,497||1.50||31,419|
|ZnAg Inferred Mineral Resources||7,801||1.61||250,740||0.86||6,743||5.44||848,259|
|Bunker Hill Total Inferred Mineral Resources||8,851||2.31||409,555||1.27||11,240||4.97||879,678|
Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the Mineral Resource will be converted into Mineral Reserves. Bunker Hill Mineral Resource Estimate-Mineralization Underground Accessible – Economic at Metal Selling Prices of $23 Per Ounce Ag, $1000 Per Pound Zinc and $0.80 Per Pound Lead. Resources Estimated at a 3.30% Zinc Cutoff Grade. Qualified Person: RDA, Scott Wilson, CPG; Effective September 29, 2020.
The Company’s ongoing exploration drilling program from surface and underground focused on targets in the upper levels of the mine located in close proximity to existing infrastructure, is aimed at expanding the resource base for the PEA. Recently completed drill results have increased the Company’s confidence in its capacity to continue to grow the resource base.