Updated Drill Results Including High Grade Silver-Lead Vein Extensions Outside Current Resource

TORONTO – Bunker Hill Mining Corp. reported on drill results from its Phase II program, including intercepts from silver-lead vein extensions delineated through testing of the down-dip and off-set portions of the Jersey-Deadwood vein system on the 9-level.

Sam Ash, CEO, said, “These encouraging results represent mineralized extensions of previously mined structures within the upper part of the mine. These are open along strike or at depth. Combined with the ongoing compilation and re-interpretation of historic data, these results indicate some of the significant upside potential of the mine beyond its existing resource envelope.”

The Jersey-Deadwood zone was historically worked on three main structures: the Jersey Vein, the Jersey Fault Vein and the Deadwood Flat Vein. All three structures historically reported silver-lead dominant production and were some of the last worked stopes before mine closure. This area was chosen as a recent exploration focus due to its accessibility and the ability to drill multiple targets with limited movement of the drill rig.

Holes 7080-7082 were drilled to test the southern extension of the Jersey vein off-set by a fault that historically had stopped the advance of stoping on multiple floors. The Deadwood and Jersey structures tested in this phase remain either open at depth or along strike for future exploration and development.

The Company is also progressing its previously announced high-resolution 3DIP ground geophysical survey program, with the intention of delineating additional mineralized target zones outside of the historical mine footprint. The survey is currently underway and preliminary results show a high quality of data acquisition. Covering ~1,500 acres of previously un-explored terrain, the program seeks to investigate multiple off-set segments of the Revett quartzite, known as the host lithology to most of the Coeur d’Alene district’s historic mining production. Also shown is the upper unit of the Prichard formation marking the transition from the main Prichard rocks, host to a majority of the Yreka mining district’s historical production, to middle Belt series rocks.

Numerous large-offset faults traverse the survey area. Final data will help to further constrain the movement along these structures and aid in locating potential mineralization associated with the structures themselves. Surveying to a depth of ~400m, program results will allow for the development of future exploration programs, both on surface and from previously developed underground workings.

The diamond drilling program used HQ-size core. Bunker Hill followed standard QA/QC practices to ensure the integrity of the core and sample preparation through delivery of the samples to the assay lab. Drill hole collar locations were surveyed using modern survey techniques to provide positioning of each sample in three-dimensional space. The drill core was stored in a secure facility, photographed, logged, split into halves (upon geologist discretion), and sampled based on lithologic and mineralogical interpretations. Standards of certified reference materials, field duplicates and blanks were inserted as samples shipped with the core samples to the lab.

ALS USA Inc (ALS) was used to provide analytical services and all results comply with both NI 43-101 and industry standards. ALS holds an industry standard ISO 17025:2017 (Vancouver) and ISO 17025:2005 (Reno) accreditation, specifying general requirements for laboratory performance.