Bunker Hill Advances Restart Activities at Bunker Hill MINE
BUNKER HILL ADVANCES RESTART ACTIVITIES AT BUNKER HILL MINE
CEO Sam Ash will be interviewed live by Kai Hoffmann today @ 1:00pm ET /10:00am PT on SF Live
Bunker Hill to Host Live Interactive 6ix Summit on Tuesday, May 24 @ 11:00am ET / 8:00am PT
HIGHLIGHTS
• Underground development continues at pace: decline from 5 Level to 6 Level on course for Q3 2022
completion, ventilation fans in full operation for first time in 40 years, underground haul truck deployed
• 6 Level connection to access mineralized material for pre-production revenue opportunities
• Pilot water treatment plant now operational, treating effluent prior to final IDEQ/EPA treatment
• Surface upgrades well underway: preparation for EPCM, creation of space for Pend Oreille mill relocation
• Technical studies and trade-off studies for Prefeasibility Study near 100% completion, including process
plant engineering, paste and tailings, metallurgy, and geotechnical studies
NEXT STEPS
• Update on Pend Oreille mill purchase closing and demobilization commencement expected in May 2022
• Prefeasibility Study results on track for June 2022, along with formal construction decision
• CEO Sam Ash interviewed live by Kai Hoffmann today at 1:00pm ET / 10:00am PT on SF Live. Live
broadcast and replay available at YouTube.com/soarfinancial or twitter.com/soarfinancial
• CEO Sam Ash and CFO David Wiens to host live interactive 6ix investor event on Tuesday, May 24 at
11:00am ET / 8:00am PT. Investors are invited to register at: [LINK]
TORONTO, May 19, 2022 – Bunker Hill Mining Corp. (the “Company”) (CSE: BNKR, OTCQB: BHLL) is pleased to
provide an update on restart project activities taking place at the Bunker Hill Mine.
Sam Ash, CEO stated: “It’s exciting to witness the significant acceleration of physical activity at the Mine since we
raised our last equity capital, driven by our expanded and Kellogg-based operational team. Whether it’s driving
the underground decline to access areas for potential pre-production revenue opportunities, commissioning our
pilot water treatment plant, or preparing surface infrastructure for the construction of the Pend Oreille Mill , we
are moving forward at a rapid pace and remain on course to restart the Bunker Hill Mine by the end of 2023.”
UNDERGROUND DEVELOPMENT
To prepare the ground for potential toll-milling opportunities, and as part of the planned restart, a decline is being
driven from the 5 Level (the highest accessible level of the mine) to the 6 Level, having just passed the 500’ point.
In support of these efforts, the mine now has ventilation fans in full operation for the first time in 40 years and its
first ever underground haul truck at work. Unit costs remain in the planned range and on track to complete the
connection to Level 6 in Q3 2022. The significance of this work is threefold:
• It provides rubber tire access from the Russell Portal (main mining operational base) through the highest
four levels of the mine (the 6 Level already connects to the 8 Level, therefore the breakthrough will
connect the 5, 6, 7 & 8 Levels)
• It unlocks access to mineralized material, opening up potential pre -production revenue opportunities
including toll milling and/or ore purchase agreements prior to commissioning of the Pend Oreille mill
• It informs the development cost and geotechnical estimates that will underpin the Prefeasibility Study
mine plan. To date, actual performance is in line with zero based productivity and cost estimates
In due course (scheduled in 2023) a further decline will be driven from the 8 Level to the 9 Level to connect the
highest five levels of the mine with the historic Kellogg Tunnel that leads directly to the main Bunker Hill yard and
processing plant.
Photo 1: Picture of development decline
Figure 1: Isometric view indicating current face position
PILOT WATER TREATMENT PLANT
A pilot water treatment plant is now operational on site. The system is a 1/20th scale version of the larger system
that has been designed to meet the mine’s IPDES water discharge requirements. The system uses a Lamella
clarifier to separate clean water from metals and solids after the mine’s effluent mixes with a lime slurry, blown
air, recirculated sludge and eventually flocculant. The simplified flow sheet for this system is shown below.
Figure 2: Flow Sheet Diagram for Pilot Industrial Water Treatment Plant at Bunker Hill Mine
The Company will conduct a testing program throughout the Spring freshet period. It is treating effluent from the
mine, separating it into clean water and sludge discharges to help determine the capabilities of the system. The
two streams are later combined and mixed before being discharged where it is later treated by the Central
Treatment Plant (the “CTP”) in Kellogg. Regular sampling and testing analysis is ongoing to evaluate the efficacy
of the Pilot Plant and allow the team to make various parameter adjustments. Whilst this is a preliminary step in
terms of the range of potential future effluent treatment outcomes, it has the potential to unlo ck options that
create capacity at the CTP for other water treatment requirements across the Silver Valley. The Company believes
the system operating at full scale may offer operating cost savings. The Company will work closely with
environmental regulators to determine the best path forward for all stakeholders. The pilot plant was constructed
on time and on budget and can be operated in a fully remote capacity.
Figure 3: Photographs of Pilot Industrial Water Treatment Plant During Construction and Operation
SURFACE UPGRADES AND PREPARATION
Above ground, the clean-up and clear-out of the main Bunker Hill yard continues apace. This work is targeted at
preparing the foundations for upcoming engineering and construction work as well as creating space for receipt
of the Pend Oreille mill. The final location of all processing facilities will be finalized in the upcoming Prefeasibility
Study, with final tradeoff studies nearing completion, but it is anticipated that the majority of processing facilities
will be located on surface making extensive use of existing buildings and infrastructure.
Figure 4: Progressive yard clean-up in February, March & April 2022
February 2022 March 2022 April 2022
NEXT STEPS
With the requisite technical studies and trade-off studies nearing 100% completion, including process plant
engineering, paste and tailings, metallurgy, and geotechnical studies, and mine planning well advanced, the
Company remains on track to publish the results of a Prefeasibility Study by the end of the second quarter of
2022. The Company also intends to provide an update with respect to the closing of the purchase of the Pend
Oreille mill purchase, and related activities, by the end of May 2022.
Figure 5: Bunker Hill Planned Development Timeline
QUALIFIED PERSON
Mr. Scott E. Wilson, CPG, President of RDA and a consultant to the Company, is an independent “qualified person”
as defined by NI 43-101 and is acting as the qualified person for the Company. He has reviewed and approved the
technical information summarized in this news release.
The Qualified Person has verified the information disclosed herein, including the sampling, preparation, security
and analytical procedures underlying such information, and is not aware of any significant risks and uncertainties
that could be expected to affect the reliability or confidence in the information discussed herein.
ABOUT BUNKER HILL MINING CORP.
Under new Idaho -based leadership the Bunker Hill Mining Corp, intends to sustainably restart and develop the
Bunker Hill Mine as the first step in consolidating a portfolio of North American mining assets with a focus on
silver. Information about the Compa ny is available on its website, www.bunkerhillmining.com, or within the
SEDAR and EDGAR databases.
For additional information contact:
David Wiens, CFA
CFO & Corporate Secretary
+1 208 370 3665
Cautionary Statements
Certain statements in this news release are forward-looking and involve a number of risks and uncertainties. Such
forward-looking statements are within the meaning of that term in Section 27A of the Securities Act of 1933, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended, as well as within the meaning of
the phrase ‘forward-looking information’ in the Canadian Securities Administrators’ National Instrument 51-102 –
Continuous Disclosure Obligations. Forward -looking statements are not comprised of historical facts. Forward -
looking statements include estimates and statements that describe the Company’s future plans, objectives or
goals, including words to the effect that the Company or management expects a stated condition or result to occur.
Forward-looking statements may be identified by such terms as “believes”, “anticipates”, “expects”, “estimates”,
“may”, “could”, “would”, “will”, or “ plan”. Since forward -looking statements are based on assumptions and
address future events and conditions, by their very nature they involve inherent risks and uncertainties. Although
these statements are based on information currently available to the Com pany, the Company provides no
assurance that actual results will meet management’s expectations. Risks, uncertainties and other factors involved
with forward-looking information could cause actual events, results, performance, prospects and opportunities to
differ materially from those expressed or implied by such forward-looking information.
Forward looking information in this news release includes, but is not limited to, the Company’s intentions regarding
its objectives, goals or future plans and statements. Factors that could cause actual results to differ materially from
such forward-looking information include, but are not limited to: the ability to predict and counteract the effects
of COVID-19 on the business of the Company, including but not limite d to the effects of COVID -19 on the price of
commodities, capital market conditions, restriction on labour and international travel and supply chains; failure
to identify mineral resources; failure to convert estimated mineral resources to reserves; the inability to complete
a feasibility study which recommends a production decision; the preliminary nature of metallurgical test results;
the Company’s ability to restart and develop the Bunker Hill Mine and the risks of not basing a production decision
on a feasibility study of mineral reserves demonstrating economic and technical viability, resulting in increased
uncertainty due to multiple technical and economic risks of failure which are associated with this production
decision including, among others, are as that are analyzed in more detail in a feasibility study, such as applying
economic analysis to resources and reserves, more detailed metallurgy and a number of specialized studies in areas
such as mining and recovery methods, market analysis, and enviro nmental and community impacts and, as a
result, there may be an increased uncertainty of achieving any particular level of recovery of minerals or the cost
of such recovery, including increased risks associated with developing a commercially mineable depos it with no
guarantee that production will begin as anticipated or at all or that anticipated production costs will be achieved;
failure to commence production would have a material adverse impact on the Company's ability to generate
revenue and cash flow t o fund operations; failure to achieve the anticipated production costs would have a
material adverse impact on the Company's cash flow and future profitability ; delays in obtaining or failures to
obtain required governmental, environmental or other project approvals; political risks; changes in equity markets;
uncertainties relating to the availability and costs of financing needed in the future; the inability of the Company
to budget and manage its liquidity in light of the failure to obtain additional financing, including the ability of the
Company to complete the payments pursuant to the terms of the agreement to acquire the Bunker Hill Mine
Complex; inflation; changes in exchange rates; fluctuations in commodity prices; delays in the development of
projects; capital, operating and reclamation costs varying significantly from estimates and the other risks involved
in the mineral exploration and development indust ry; and those risks set out in the Company’s public documents
filed on SEDAR. Although the Company believes that the assumptions and factors used in preparing the forward -
looking information in this news release are reasonable, undue reliance should not be placed on such information,
which only applies as of the date of this news release, and no assurance can be given that such events will occur in
the disclosed time frames or at all. The Company disclaims any intention or obligation to update or revise any
forward-looking information, whether as a result of new information, future events or otherwise, other than as
required by law. No stock exchange, securities commission or other regulatory authority has approved or
disapproved the information contained herein.
Cautionary Note to United States Investors Concerning Estimates of Measured, Indicated and Inferred
Resources
This press release has been prepared in accordance with the requirements of the securities laws in effect in Canada,
which differ from th e requirements of U.S. securities laws. Unless otherwise indicated, all resource and reserve
estimates included in this press release have been disclosed in accordance with NI 43 -101 and the Canadian
Institute of Mining, Metallurgy, and Petroleum Definition Standards on Mineral Resources and Mineral Reserves.
NI 43-101 is a rule developed by the Canadian Securities Administrators which establishes standards for all public
disclosure an issuer makes of scientific and technical information concerning mineral projects. Canadian disclosure
standards, including NI 43 -101, differ significantly from the requirements of the United States Securities and
Exchange Commission (“SEC”), and resource and reserve information contained in this press release may not be
comparable to similar information disclosed by U.S. companies. In particular, and without limiting the generality
of the foregoing, the term “resource” does not equate to the term “reserves”. Under U.S. standards, mineralization
may not be classified as a “reser ve” unless the determination has been made that the mineralization could be
economically and legally produced or extracted at the time the reserve determination is made. The SEC’s disclosure
standards normally do not permit the inclusion of information con cerning “measured mineral resources”,
“indicated mineral resources” or “inferred mineral resources” or other descriptions of the amount of mineralization
in mineral deposits that do not constitute “reserves” by U.S. standards in documents filed with the SE C. Investors
are cautioned not to assume that any part or all of mineral deposits in these categories will ever be converted into
reserves. U.S. investors should also understand that “inferred mineral resources” have a great amount of
uncertainty as to the ir existence and great uncertainty as to their economic and legal feasibility. It cannot be
assumed that all or any part of an “inferred mineral resource” will ever be upgraded to a higher category. Investors
are cautioned not to assume that all or any par t of an “inferred mineral resource” exists or is economically or
legally mineable. Disclosure of “contained ounces” in a resource is permitted disclosure under Canadian
regulations; however, the SEC normally only permits issuers to report mineralization th at does not constitute
“reserves” by SEC standards as in-place tonnage and grade without reference to unit measures. The requirements
of NI 43-101 for disclosure of “reserves” are also not the same as those of the SEC, and reserves disclosed by the
Company in accordance with NI 43 -101 may not qualify as “reserves” under SEC standards. Accordingly,
information concerning mineral deposits contained in our website may not be comparable with information made
public by companies that report in accordance with U.S. standards.