Document:

Exhibit 10.1

 

SIXTH SUPPLEMENTAL AGREEMENT

 

THIS SIXTH SUPPLEMENTAL
AGREEMENT, dated as of January 31, 2022 (this “Agreement”), by and between Acacia Research Corporation, a Delaware
corporation (the “Company”), Merton Acquisition HoldCo LLC, a Delaware limited liability company and wholly-owned Subsidiary
of the Company (“Merton”), certain other direct and indirect Subsidiaries of the Company, Starboard Value LP (the “Designee”)
on behalf of itself and on behalf of the funds and accounts under its management that as of the date hereof hold, or that will after the
date hereof hold, Preferred Shares, Series A Warrants, Series B Warrants and/or Notes (each as defined in the Securities Purchase Agreement
(as defined below)) (the “Starboard Funds”) and Starboard Value Intermediate Fund LP, in its capacity as collateral
agent (in such capacity, the “Collateral Agent”) for the Starboard Funds.

 

WHEREAS, the Company,
the Designee and certain Starboard Funds have entered into, among others, that certain Securities Purchase Agreement, dated as of November
18, 2019 (the “Securities Purchase Agreement”);

 

WHEREAS,
the Company, certain direct and indirect Subsidiaries of the Company and Starboard Value Intermediate Fund LP, in its capacity as the
Collateral Agent (the “Collateral Agent”) have entered into that certain Pledge and Security Agreement, dated as of
June 30, 2020, by the Company and Collateral Agent (as amended, restated, amended and restated, supplemented or otherwise modified from
time to time, the “Pledge and Security Agreement”);

 

WHEREAS, pursuant to
the Securities Purchase Agreement, as supplemented by that certain Supplemental Agreement dated as of June 4, 2020 between the Company
and the Designee on behalf of the Starboard Funds (as amended, restated, amended and restated, supplemented or otherwise modified from
time to time, the “First Supplemental Agreement”), that certain Exchange Agreement dated as of June 30, 2020 (as amended,
restated, amended and restated, supplemented or otherwise modified from time to time, the “Exchange Agreement”), that
certain Second Supplemental Agreement dated as of March 31, 2021 between the Company, Merton, certain other direct and indirect Subsidiaries
of the Company, the Designee on behalf of the Starboard Funds, and the Collateral Agent (as amended, restated, amended and restated, supplemented
or otherwise modified from time to time, the “Second Supplemental Agreement”) and that certain Third Supplemental Agreement
dated as of June 30, 2021 between the Company, Merton, certain other direct and indirect Subsidiaries of the Company, the Designee on
behalf of the Starboard Funds, and the Collateral Agent (as amended, restated, amended and restated, supplemented or otherwise modified
from time to time, the “Third Supplemental Agreement”), that certain Fourth Supplemental Agreement dated as of September
30, 2021 between the Company, Merton, certain other direct and indirect Subsidiaries of the Company, the Designee on behalf of the Starboard
Funds, and the Collateral Agent (as amended, restated, amended and restated, supplemented or otherwise modified from time to time, the
“Fourth Supplemental Agreement”) and that certain Fifth Supplemental Agreement dated as of November 30, 2021 between
the Company, Merton, certain other direct and indirect Subsidiaries of the Company, the Designee on behalf of the Starboard Funds, and
the Collateral Agent (as amended, restated, amended and restated, supplemented or otherwise modified from time to time, the “Fifth
Supplemental Agreement”) : (i) on November 18, 2019 the Company issued to certain Starboard Funds an aggregate of 350,000 Preferred
Shares and Series A Warrants to purchase an aggregate of 5,000,000 shares of Common Stock, (ii) on February 25, 2020 the Company issued
to certain Starboard Funds Series B Warrants to purchase an aggregate of 100,000,000 shares of Common Stock, (iii) on June 4, 2020, the
Company issued Notes (the “June 4 Notes”) to certain Starboard Funds in an aggregate principal amount of $115,000,000,
(iv) on June 30, 2020, the Company and the Designee on behalf of the Starboard Funds agreed to exchange and replace the June 4 Notes for
Notes issued by Merton in an aggregate principal amount of $115,000,000 (the “June 2020 Merton Notes”), (v) on March
31, 2021, the Company issued Notes (the “March 2021 Merton Notes”) to certain Starboard Funds in an aggregate principal
amount of $50,000,000 and amended certain terms of the June 2020 Merton Notes, (vi) on June 30, 2021, the Company issued Notes (the “June
2021 Merton Notes”) to certain Starboard Funds in an aggregate principal amount of $30,000,000 and amended certain terms of
the June 2020 Notes and the March 2021 Merton Notes, (vii) on September 30, 2021, the Company issued Notes (the “September 2021
Merton Notes” and, together with the June 2020 Merton Notes, the March 2021 Merton Notes and the June 2021 Merton Notes, the
“Existing Merton Notes”) to certain Starboard Funds in an aggregate principal amount of $35,000,000 and amended certain
terms of the June 2020 Notes, the March 2021 Merton Notes and the June 2021 Merton Notes;

 

WHEREAS, the Company,
Merton and the Designee on behalf of itself and the Holders have agreed to (i) repay the September 2021 Merton Notes in an aggregate
principal amount of $15,000,000 and (ii) amend the Existing Merton Notes and the Pledge and Security Agreement as set forth herein.

 

 

 

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NOW, THEREFORE, in
consideration of the premises and the mutual agreements, provisions and covenants contained herein, the parties hereby agree as follows:

 

	1.	
    Definitions. Unless otherwise specified
    herein, all capitalized terms used and not defined herein shall have the meanings ascribed to them in the Securities Purchase Agreement,
    the First Supplemental Agreement, the Second Supplemental Agreement, the Third Supplemental Agreement, the Fourth Supplemental Agreement,
    the Fifth Supplemental Agreement and the Exchange Agreement, as applicable.

    

 

	2.	Repayment of September 2021 Merton Notes.  On the date hereof, Merton hereby agrees to repay an aggregate of $15,000,000 in principal amount of the September 2021 Merton Notes  at a purchase price equal to the principal amount plus accrued and unpaid interest to, but not including, the repayment date, which amounts are set forth opposite each Starboard Fund’s name in column (4) of Schedule G, in cash by wire transfer of immediately available funds in accordance with the wire transfer instructions set forth opposite each Starboard Fund’s name in column (5) of Schedule G.  Immediately following such repayment, the parties hereby agree that the amounts set forth opposite each Starboard Fund’s name in column (2) in Schedule H provide the outstanding principal amount of the September 2021 Merton Notes on the date hereof after giving effect to the foregoing repayment. Except as set forth herein, the parties hereby agree that this repayment shall not alter any other term in the September 2021 Merton Notes or any other related agreement or agreement incorporated by reference thereto.

 

	3. 	
    Amendment of Existing Merton Notes. The
    Company, Merton and the Designee on behalf of the Starboard Funds representing the Required Holders (as defined in the Existing Merton
    Notes) agree to amend the terms of the Existing Merton Notes, other than the September 2021 Merton Notes repayment pursuant to Section
    2, as follows:

     

    a. Definition of Maturity
    Date. The definition of the term “Maturity Date” set forth in Section 1 of the Existing Merton Notes is amended and replaced
    by the following: “April 15, 2022”.

     

    As of the execution and delivery of this Agreement
    by the Company, Merton and the Designee, the definition of “Transaction Documents” set forth in Section 3(b) of the Securities
    Purchase Agreement shall be amended to add this Agreement, as amended, restated, amended and restated, supplemented or otherwise modified
    from time to time, to such definition (in addition to any amendment to such definition pursuant to the First Supplemental Agreement, the
    Second Supplemental Agreement, the Third Supplement Agreement, the Fourth Supplemental Agreement, the Fifth Supplemental Agreement and
    the Exchange Agreement).

    

	 	 
	4.	
    Representations
    and Warranties.  

     

    a. The Designee
    represents and warrants to the Company, and each of the Company and Merton, represents and warrants to the Designee and the Starboard
    Funds holding the Merton Notes in accordance with this Agreement, that, as of the date hereof: (i) such Person is an entity duly organized
    and validly existing under the laws of the jurisdiction of its formation, has the requisite power and authority to execute and deliver
    this Agreement and to carry out and perform all of its obligations under the terms of this Agreement; (ii) this Agreement has been duly
    executed and delivered on behalf of such Person, and this Agreement constitutes the valid and legally binding obligation of such Person
    enforceable against such Person in accordance with its terms, except as such enforceability may be limited by general principles of equity
    or to applicable bankruptcy, insolvency, reorganization, moratorium, liquidation and other similar laws relating to, or affecting generally,
    the enforcement of applicable creditors’ rights and remedies; (iii) the execution, delivery and performance by such Person of this
    Agreement and the consummation by such Person of the transactions contemplated hereby will not (1) result in a violation of the organizational
    documents of such Person, (2) conflict with, or constitute a default (or an event which with notice or lapse of time or both would become
    a default) under, or give to others any rights of termination, amendment, acceleration or cancellation of, any agreement, indenture or
    instrument to which such Person is a party, or (3) result in a violation of any law, rule, regulation, order, judgment or decree
    (including federal and state securities laws) applicable to such Person, except in the case of clause (2) and (3) above, for such conflicts,
    defaults, rights or violations which would not, individually or in the aggregate, reasonably be expected to have a material adverse effect
    on the ability of such Person to perform its obligations hereunder; and (iv) the Designee has the requisite authority to execute this
    Agreement on behalf of the Required Holders (as defined in the applicable Transaction Documents).

    

    

	 	 

 

 

 

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	 	b.  In
    addition, the Company hereby represents and warrants to the Designee and the Starboard Funds holding the Merton Notes, that, as of the
    date hereof and as of the date of the consummation of the transactions contemplated hereby: (i) the Board of Directors of the Company
    approved the resolutions set forth in Schedule A attached hereto; (ii) no Subsidiary, other than Acacia Research Group
    LLC (“ARG”), has any (a) Material Claims or Liabilities, whether direct or indirect, absolute, accrued or contingent,
    that would be required to be reflected on a balance sheet prepared with respect to such Person on a stand-alone basis in accordance with
    GAAP, (b) unusual forward or long-term commitments, (c) unrealized or anticipated losses from any unfavorable commitments, (d) contracts
    or commitments, including leases or with employees, except as set forth on Schedule B attached hereto, which, for purposes
    of the Merton Notes, shall not be a breach of Section 10 (g)(i)(3) thereof; or (e) litigation, arbitration or dispute, including
    regarding tax (clause (a) to and including clause (e) are collectively referred to herein as “Obligations”), other
    than legal and professional fees and royalty sharing arrangements, and related contracts or commitments, accrued in the ordinary course
    of the patent assertion business, and, in the case of (e), litigation with respect to such Subsidiaries as plaintiffs in Intellectual
    Property litigation, (iii) neither the Company nor Merton or any of their respective Subsidiaries has any knowledge of any event, circumstance
    or information that would give rise to a reasonable basis for the assertion against any Subsidiary, other than ARG, of any future Obligations
    material to such Subsidiary on a stand-alone basis, (iv) to the Company’s knowledge, no Subsidiary, other than ARG and the Subsidiaries
    and related activities listed on Schedule F, has conducted any business or operations or has had any liabilities or obligations
    or owned any asset or been party to any agreement during the last five (5) years, or, since such Subsidiary has been formed if such Subsidiary
    was formed within the last five (5) years, other than their ordinary course activities of purchasing and licensing intellectual property
    and liabilities incidental to such activities; and (v) the Subsidiaries listed on Schedule C attached hereto, represent
    all Material Subsidiaries (as defined below) of the Company. As used herein, (i) “Material Subsidiary” means any Subsidiary
    of the Company that, (x) had total revenues for the twelve (12) month period ended December 31, 2021 that were equal to, or more than,
    1% of the consolidated revenues of the Company and its Subsidiaries or (y) as of December 31, 2021 held 1% or more of the consolidated
    assets of the Company and its Subsidiaries, (ii) “Material Claims or Liabilities” means claims or liabilities to third
    parties greater than $1 million, and (iii) “Company’s Knowledge” means the actual knowledge or belief of Clifford
    Press, Marc Booth, Richard Rosenstein, Jason Soncini, Jennifer Graff or Nadereh Russell.

 

	5.	Fees and Expenses. The Company shall within three (3) Business Days of the date hereof reimburse the Designee or its designee(s) for all reasonable and documented costs and expenses incurred in connection with the transactions contemplated hereby (including all legal fees and disbursements in connection therewith, documentation and implementation of the transactions contemplated hereby).
	 	 
	6.	Indemnification. In consideration of the Designee’s execution and delivery of this Agreement and in addition to all of the Company’s other obligations under this Agreement and the other Transaction Documents, the Company shall defend, protect, indemnify and hold harmless the Designee, each Starboard Fund, the Collateral Agent and each other holder of the Securities and all of their stockholders, partners, members, officers, directors, employees and direct or indirect investors and any of the foregoing Persons’ agents or other representatives (including, without limitation, those retained in connection with the transactions contemplated by this Agreement) (collectively, the “Indemnitees”), as incurred, from and against any and all actions, causes of action, suits, claims, losses, costs, penalties, fees, liabilities and damages, and expenses in connection therewith (irrespective of whether any such Indemnitee is a party to the action for which indemnification hereunder is sought), and including reasonable attorneys’ fees and disbursements (the “Indemnified Liabilities”), incurred by any Indemnitee as a result of, or arising out of, or relating to (a) any misrepresentation or breach of any representation or warranty made by the Company in this Agreement, any other Transaction Document or any other certificate, instrument or document contemplated hereby or thereby, (b) any breach of any covenant, agreement or obligation of the Company contained in this Agreement, any other Transaction Document or any other certificate, instrument or document contemplated hereby or thereby, (c) any cause of action, suit or claim brought or made against such Indemnitee by the Company or a third party (including for these purposes a derivative action brought on behalf of the Company) and arising out of or resulting from (i) the execution, delivery, performance or enforcement of this Agreement, any other Transaction Document or any other certificate, instrument or document contemplated hereby or thereby or any advice or assistance provided to or on behalf of the Company by any Indemnitee at the request of the Company, (ii) any transaction financed or to be financed in whole or in part, directly or indirectly, with the proceeds of the issuance of the Securities, or (iii) the status of such Buyer or holder of the Securities as an investor in the Company pursuant to the transactions contemplated by this Agreement and any of the other Transaction Documents. For the avoidance of doubt, the indemnification set forth in this Section 5 is intended to apply, and shall apply, to direct claims asserted by the Designee or any Starboard Fund against the Company as well as any third party claims asserted by an Indemnitee (other than the Designee or a Starboard Fund) against the Company. To the extent that the foregoing undertaking by the Company may be unenforceable for any reason, the Company shall make the maximum contribution to the payment and satisfaction of each of the Indemnified Liabilities that is permissible under applicable law. Except as otherwise set forth herein, the mechanics and procedures with respect to the rights and obligations under this Section 5 shall be the same as those set forth in Section 7 of the Registration Rights Agreement.

 

 

 

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	7.	Governing Law; Jurisdiction; Jury Trial. All questions concerning the construction, validity, enforcement and interpretation of this Agreement shall be governed by the internal laws of the State of New York, without giving effect to any choice of law or conflict of law provision or rule (whether of the State of New York or any other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New York. Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in The City of New York, Borough of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein, and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that the venue of such suit, action or proceeding is improper. Each party hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof to such party at the address for such notices to it under the Securities Purchase Agreement and agrees that such service shall constitute good and sufficient service of process and notice thereof to the fullest extent enforceable under applicable law. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE TO, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS AGREEMENT OR ANY TRANSACTION CONTEMPLATED HEREBY.
	 	 
	8.	Counterparts; Headings. This Agreement may be executed in two or more counterparts, each of which will be deemed an original but all of which together will constitute one and the same instrument. The headings of this Agreement are for convenience of reference and shall not form part of, or affect the interpretation of, this Agreement.  Counterparts may be delivered via facsimile, electronic mail (including pdf or any electronic signature complying with the U.S. federal ESIGN Act of 2000, e.g., www.docusign.com) or other transmission method and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes.
	 	 
	9.	Severability. If any provision of this Agreement is prohibited by law or otherwise determined to be invalid or unenforceable by a court of competent jurisdiction, the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest extent that it would be valid and enforceable, and the invalidity or unenforceability of such provision shall not affect the validity of the remaining provisions of this Agreement so long as this Agreement as so modified continues to express, without material change, the original intentions of the parties as to the subject matter hereof and the prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or reciprocal obligations of the parties or the practical realization of the benefits that would otherwise be conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a valid provision(s), the effect of which comes as close as possible to that of the prohibited, invalid or unenforceable provision(s).
	 	 
	10.	Amendments. Any amendments or modifications hereto must be executed in writing by all parties hereto.
	 	 
	11.	
    Amendment to Pledge and Security Agreement.
    In accordance with Section 10(a) of the Pledge and Security Agreement, the Company and the Collateral Agent hereby agree as follows:

    a. The last two sentences of Section 5(i) are
    hereby deleted in their entirety and the following is inserted in lieu thereof:

    “Unless a Cash Management Agreement has
    been entered into within thirty (30) days (or such longer period as may be agreed by the Collateral Agent in its sole discretion) of opening
    such Deposit Account, Commodity Account or Securities Account, such Grantor shall not make or maintain any Deposit Account, Commodity
    Account or Securities Account except for the accounts set forth in Schedule IV hereto. The provisions of this paragraph 5(i) shall
    not apply to (i) Deposit Accounts for which the Collateral Agent is the depositary, (ii) accounts specially and exclusively used for margin
    or escrow in each case to the extent securing obligations permitted under the Transaction Documents, payroll, withholding, payroll taxes
    and other employee wage and benefit payments to or for the benefit of a Grantor’s salaried employees, trust or other similar accounts,
    (iii) zero balance accounts and (iv) such other accounts as may be agreed to by the Collateral Agent in writing (the foregoing, “CMA
    Excluded Accounts”).”

	 	 
	12.	CMA Excluded Accounts. Notwithstanding anything to the contrary in any other Transaction Document, the Company hereby represents that as of the date hereof each of the accounts listed on Schedule E hereto are CMA Excluded Accounts.

 

[Signature Page Follows]

 

 

 

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IN WITNESS WHEREOF,
the parties have duly executed this Agreement as of the date first above written.

 

	 	COMPANY:
	 	 
	 	ACACIA RESEARCH CORPORATION
	 	 
	 	 
	 	By:	/s/Clifford Press
	 	Name:	Clifford Press
	 	Title:	Chief Executive Officer

 

 

 

 

	 	MERTON:
	 	 
	 	MERTON ACQUISITION HOLDCO LLC
	 	 
	 	 
	 	By:	/s/Clifford Press
	 	Name:	Clifford Press
	 	Title:	Chief Executive Officer
	 	 	 

 

 

 

 

 

 

 

 

 

 

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IN WITNESS WHEREOF,
the parties have duly executed this Agreement as of the date first above written.

 

	 	DESIGNEE:
	 	 
	 	STARBOARD VALUE LP
	 	 
	 	 
	 	By:	/s/Jeffrey C. Smith
	 	Name:	Jeffrey C. Smith
	 	Title:	Authorized Signatory
	 	 	 

 

 

	 	COLLATERAL AGENT:
	 	 
	 	STARBOARD VALUE INTERMEDIATE FUND LP,
	 	 
	 	 
	 	By:	/s/Jeffrey C. Smith
	 	Name:	Jeffrey C. Smith
	 	Title:	Authorized Signatory
	 	 	 

 

 

 

 

 

 

 

 

 

    	 	6Exhibit
10.1

 

UNLESS
PERMITTED UNDER SECURITIES LEGISLATION, THE HOLDER OF THIS SECURITY MUST NOT TRADE THE SECURITY BEFORE MAY 29, 2022.

 

NEITHER
THIS DEBENTURE NOR THE SECURITIES ISSUABLE UPON CONVERSION HEREOF HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED,
OR ANY APPLICABLE STATE SECURITIES LAW, AND NO INTEREST HEREIN OR THEREIN MAY BE SOLD, DISTRIBUTED, ASSIGNED, OFFERED, PLEDGED OR OTHERWISE
TRANSFERRED EXCEPT (1) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS
OR (2) PURSUANT TO AN AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF SUCH SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS,
IN WHICH CASE THE HOLDER MUST, PRIOR TO SUCH TRANSFER, FURNISH TO DEBTOR AN OPINION OF COUNSEL, WHICH COUNSEL AND OPINION ARE REASONABLY
SATISFACTORY TO DEBTOR, THAT SUCH SECURITIES MAY BE OFFERED, SOLD, PLEDGED, ASSIGNED OR OTHERWISE TRANSFERRED IN THE MANNER CONTEMPLATED
PURSUANT TO AN AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF SUCH SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS.

 

SECURED
CONVERTIBLE DEBENTURE

 

	US$[●]	January
    28, 2022
	 	 
	No.
    [●]	 

 

		1.	PROMISE
    TO PAY

 

For
value received, BUNKER HILL MINING CORP. (“Debtor”) hereby promises to pay to the order of [●] (together
with its successors and assigns, “Debentureholder”), at the address listed in Section 2 (Notice), or such other
place and/or Person as Debentureholder may by notice in writing to Debtor direct, the principal amount of [●] dollars ($[●])
in lawful money of the United States of America (the “Principal Amount”) in the manner hereinafter provided, together
with interest and other monies in the same currency which may from time to time be owing hereunder or pursuant hereto. Subject to the
provisions of this debenture (the “Debenture”), the Principal Amount together with all accrued and unpaid interest
and all other monies owing hereunder, shall become due and payable on July 7, 2023 (the “Maturity Date”). All capitalized
terms not defined in the body of this Debenture, are defined in Exhibit “A” appended to this Debenture.

 

SILVER
VALLEY METALS CORP. (“Guarantor”) is a wholly owned direct Subsidiary of Debtor and Guarantor will receive substantial
direct and indirect benefits from the advance of the Principal Amount under this Debenture to Debtor. In consideration of the foregoing,
and for other good and valuable consideration, Guarantor hereby covenants and agrees to guarantee the Obligations and perform and comply
its other Obligations.

 

		2.	THE
    DEBENTURE

 

	 	(a)	Funding
    Date. Subject to the terms and conditions hereof, Debentureholder shall advance the Principal Amount in a single advance to Debtor
    on the date that is the later of the date hereof and the date on which the Security is granted (the “Funding Date”).

 

    	 

    	-2-

     

	 	(b)	Use
    of Principal Amount. The Principal Amount shall be used for the construction and development of the Bunker Hill Mine (the “Mine”)
    located in the Coeur D’Alene Mining District, in the cities of Kellogg and Wardner and in Shoshone County, Idaho, USA and general
    corporate purposes as required.
	 	 	 
	 	(c)	Interest
    Rate. Subject to Section 2(d), the Principal Amount shall bear interest from the Funding Date to the date of repayment in full
    at the rate of SEVEN AND ONE-HALF per cent (7.5%) per annum, calculated and payable quarterly in arrears as set out in this Section
    2(c). Interest on the Principal Amount shall accrue from day to day in the same currency as principal, both before and after maturity,
    default or judgment, and shall be calculated based on the actual number of days elapsed and on the basis of a year of 360 days. Interest
    on the balance from time to time outstanding of the Principal Amount shall be calculated and payable on each Quarter End following
    the Funding Date and on Maturity Date (or such earlier date as such amounts may become due in accordance with the provisions hereof),
    calculated and compounded quarterly not in advance, computed from the Funding Date or the date of the last payment of interest to
    the next Quarter End or the Maturity Date, as applicable, on the basis of the actual number of days elapsed. 
	 	 	 
	 	(a)	Default
    Interest. Debtor shall pay to Debentureholder interest on overdue amounts (including overdue interest), both before and after
    maturity, default or judgment, and on the Principal Amount upon the occurrence and during the continuance of an Event of Default,
    in each case, at a rate per annum equal to ELEVEN per cent (11.0%) per annum, calculated daily and on the basis of the actual number
    of days elapsed, and a year of 360 days and compounded monthly, and payable upon demand by Debentureholder. 

 

		3.	PRINCIPAL
    PAYMENTS

 

All
instalments of principal and interest hereunder received by Debentureholder shall be applied first as against interest outstanding and
secondly against the principal sum.

 

		4.	PREPAYMENT

 

Subject
to the exercise by Debentureholder of its conversion privileges in Section 10.3 at any time prior to prepayment, Debtor may redeem or
prepay this Debenture, in whole but not in part, and in cash only, prior to the Maturity Date, on not less than twenty (20) Business
Days prior written notice and provided that Debtor redeems or prepays all of the outstanding Convertible Debentures at the same time.
Should Debtor prepay this Debenture in whole in accordance with this Section 4, it shall do so at a price equal to the sum of (i) the
Principal Amount, plus (ii) all accrued and unpaid interest on the Principal Amount, plus (iii) the Prepayment Interest Premium, and
plus (iv) all other amounts owing and due hereunder; provided that, the Prepayment Interest Premium will not be payable in the event
that the Debtor prepays this Debenture within 2 Business Days of the Stream Advance Date in order to satisfy the conditions precedent
to the advance of the Stream. Each Obligor acknowledges and agrees that any such prepayment prior to the Maturity Date (other than a
prepayment upon the exercise by Debentureholder of its conversion privileges in Section 10.3) is subject to the Prepayment Interest Premium
and that such amount represents a reasonable estimate of fair compensation payable to Debentureholder for the losses suffered by early
prepayment and such amount is in the nature of liquidated damages and not a penalty. Debtor may exercise its conversion privileges under
Section 10.1 in respect of accrued and unpaid interest upon an early prepayment.

 

    	 

    	-3-

     

		5.	PAYMENT
    GENERALLY

 

	 	(a)	All
    amounts payable by Debtor or Guarantor hereunder shall be paid to the Administrative Agent on behalf of Debentureholder in United
    States Dollars, in immediately available funds (i) by wire transfer at such account or financial institution as the Administrative
    Agent may from time to time notify Debtor or (ii) by bank draft delivered to the Administrative Agent at its address as set forth
    in Section 15 hereof. Any payments received after 12:00 p.m. (Vancouver time) will be considered for all purposes as having been
    made on the next following Business Day.
	 	 	 
	 	(b)	If
    the due date of any payment under this Debenture would otherwise fall on a day that is not a Business Day, such payment shall be
    due on the next succeeding Business Day, together with interest that has accrued to the Business Day on which such payment was due.
	 	 	 
	 	(c)	Debentureholder
    will maintain in accordance with its usual practice one or more accounts evidencing the Principal Amount owing by Debtor to Debentureholder
    hereunder. Such account(s) will be prima facie evidence of the obligations recorded therein, provided that any failure by
    Debentureholder to maintain any account or any error therein shall not affect the obligation of Debtor or Guarantor to repay the
    Obligations to the Debentureholder in accordance with this Debenture.

 

		6.	TAXES

 

	 	(a)	Any
    and all payments by or on account of any obligation of Debtor or Guarantor hereunder or any other Credit Document shall be made free
    and clear of and without deduction or withholding for any Indemnified Taxes; provided that if Debtor or Guarantor shall be required
    to deduct or withhold any Indemnified Taxes from such payments, then (i) the sum payable shall be increased as necessary so that,
    after making all required deductions or withholdings (including deductions or withholdings applicable to additional sums payable
    under this Section 6), Debentureholder receives an amount equal to the sum it would have received had no such deduction or withholding
    been made, (ii) Debtor or Guarantor, as applicable, shall make such deduction or withholding, and (iii) Debtor or Guarantor, as applicable,
    shall pay to the relevant Governmental Authority in accordance with Applicable Law the full amount deducted or withheld.
	 	 	 
	 	(b)	Without
    limiting the provisions of Section 6(a), each Obligor shall timely pay any Other Taxes to the relevant Governmental Authority in
    accordance with Applicable Law.
	 	 	 
	 	(c)	The
    Obligors shall (within three Business Days of demand by Debentureholder) pay to Debentureholder an amount equal to the loss, liability
    or cost which Debentureholder determines will be or has been (directly or indirectly) suffered for or on account of Indemnified Taxes
    (including Other Taxes) by Debentureholder in respect of any Credit Document together with any penalties, interest and reasonable
    expenses arising therefrom or with respect thereto, whether or not such Indemnified Taxes or Other Taxes were correctly or legally
    imposed or asserted by the relevant Governmental Authority. A certificate as to the amount of such loss, liability or cost delivered
    to an Obligor by Debentureholder shall be conclusive absent manifest error. If Debentureholder subsequently recovers all or part
    of the payment made under this Section 6(c) paid by an Obligor, it shall promptly repay an equal amount to such Obligor.

 

    	 

    	-4-

     

	 	(d)	As
    soon as practicable after any payment of Indemnified Taxes or Other Taxes by an Obligor to a Governmental Authority, such Obligor
    shall deliver to Debentureholder the original or a certified copy of a receipt issued by such Governmental Authority evidencing such
    payment, a copy of the return reporting such payment or other evidence of such payment reasonably satisfactory to Debentureholder.
	 	 	 
	 	(e)	This
    Section 6 shall survive termination of this Debenture.

 

		7.	INTEREST
    CALCULATIONS

 

	 	(a)	Except
    as otherwise specifically provided herein, where in this Debenture a rate of interest is calculated on the basis of a year (the “deemed
    year”) which contains fewer days than the actual number of days in the calendar year of calculation, such rate of interest
    shall be expressed as a yearly rate for purposes of the Interest Act (Canada) by multiplying such rate of interest by the
    actual number of days in the calendar year of calculation, whether 365 or 366, as the case may be, and dividing it by the number
    of days in the deemed year.
	 	 	 
	 	(b)	Notwithstanding
    anything in this Debenture to the contrary, in the event that any provision of this Debenture would oblige any Obligor to make any
    payment of interest or other amount payable to Debentureholder hereunder in an amount or calculated at a rate which would be prohibited
    by law or would result in a receipt by Debentureholder of interest at a criminal or prohibited rate (as such terms are construed
    under the Criminal Code (Canada) or any other Applicable Law), notwithstanding such provision, such amount or rate shall be
    deemed to have been adjusted nunc pro tunc to the maximum amount or rate of interest, as the case may be, as would not be
    so prohibited by law or so result in a receipt by Debentureholder of interest at a criminal or prohibited rate, such adjustment to
    be effected, to the extent necessary, firstly, by reducing the amount or rate of interest pursuant to Section 2(c) of this Debenture;
    and thereafter, by reducing any fees, commissions, premiums and other amounts which would constitute interest for the purposes of
    Section 347 of the Criminal Code (Canada), as may be amended from time to time, or any other Applicable Law. Any amount or
    rate of interest referred to in this Debenture shall be determined in accordance with generally accepted actuarial practices and
    principles over the term hereof and, in the event of a dispute, a certificate of a fellow of the Canadian Institute of Actuaries
    appointed by Debentureholder shall be conclusive for the purposes of such determination.
	 	 	 
	 	(c)	In
    determining whether or not the interest paid or payable under this Debenture exceeds the maximum amount permitted by Section 7(b),
    each Obligor and Debentureholder shall, to the maximum extent permitted under the Criminal Code (Canada) or any other Applicable
    Law, characterize any non-principal payments as an expense, fee or premium or other payment rather than as interest, as may be necessary
    to reduce the amount otherwise characterized as interest pursuant to such Applicable Law, exclude voluntary prepayments and the effects
    thereof and amortize, prorate, allocate and spread the total amount of interest rateably over the longer of the contemplated term
    or the actual duration that any Obligations remain outstanding.

 

		8.	GUARANTEE

 

	 	(a)	Guarantor
    hereby unconditionally and irrevocably guarantees to Debentureholder the due and punctual payment and performance of the Obligations
    and agrees on written demand of Debentureholder, following the occurrence of an Event of Default, to perform or discharge the Obligations
    which have not been fully performed or discharged at the times and in the manner provided for in this Debenture (the “Guarantee”).

 

    	 

    	-5-

     

	 	(b)	Without
    prejudice to the rights of Debentureholder against Debtor, Guarantor unconditionally and irrevocably agrees that, as between Debentureholder
    and itself, it will be liable as principal debtor in respect of the performance of the Obligations and not merely as surety and,
    accordingly, Guarantor shall be fully liable forthwith on demand by Debentureholder, following the occurrence and during the continuance
    of an Event of Default, to perform or discharge the Obligations irrespective of the validity, effectiveness or enforceability of
    the Obligations against Debtor or any other fact or circumstances which would or might otherwise constitute a legal or equitable
    discharge of or defence to a guarantor or surety.
	 	 	 
	 	(c)	As
    a separate and independent obligation, if any of the Obligations are not duly and punctually paid by Debtor and performed by Guarantors
    under Section 8(a) for any reason whatsoever Guarantor unconditionally and irrevocably agrees to indemnify and save Debentureholder
    harmless from and against any losses which Debentureholder may suffer or incur from the failure of Debtor to duly perform such Obligations.
    
	 	 	 
	 	(d)	The
    Guarantee of the Obligations is a continuing guarantee and shall remain in effect until all of the Obligations existing or arising
    or which may arise under or by virtue of the Obligations shall have been paid, performed or discharged in full.
	 	 	 
	 	(e)	Guarantor
    waives any rights it may have as surety under any Applicable Law which may at any time be inconsistent with any of the provisions
    hereof or which it may have of first requiring Debentureholder to proceed against or claim performance or payment from Debtor or
    any other Person.
	 	 	 
	 	(f)	Debentureholder
    without notice to Guarantor and without discharging, prejudicing or affecting the obligations of Guarantor hereunder, may (i) grant
    time, indulgences, concessions, releases and discharges or any financial accommodation to Debtor; (ii) take, hold, fail to take or
    hold, vary, deal with, realize, enforce, release or determine not to enforce, perfect or release any other guarantee, indemnity or
    security for all or any of the Obligations; or (iii) effect compositions from, and otherwise deal with, Debtor and all other Persons
    as Debentureholder may see fit and generally may otherwise do or omit to do any act or thing which, but for this provision, might
    operate to discharge, prejudice or affect the obligations of Guarantor hereunder.
	 	 	 
	 	(g)	Guarantor
    agrees that the liability of Guarantor under this Guarantee is absolute and unconditional irrespective of:

 

	 	(i)	the
    lack of validity or enforceability of any terms of any of the Credit Documents;
	 	 	 
	 	(ii)	any
    contest by Debtor or any other Person as to the amount of the Obligations, the validity or enforceability of any terms of the Credit
    Documents or the perfection or priority of any Security;
	 	 	 
	 	(iii)	any
    defence, counter claim or right of set-off available to Debtor;

 

    	 

    	-6-

     

	 	(iv)	any
    release, compounding or other variance of the liability of Debtor or any other Person liable in any manner under or in respect of
    the Obligations or the extinguishment of all or any part of the Obligations by operation of law;
	 	 	 
	 	(v)	any
    change in the time or times for, or place or manner or terms of payment or performance of the Obligations or any consent, waiver,
    renewal, alteration, extension, compromise, arrangement, concession, release, discharge or other indulgences which Debentureholder
    may grant to Debtor or any other Person; 
	 	 	 
	 	(vi)	any
    amendment or supplement to, or alteration or renewal of, or restatement, replacement, refinancing or modification or variation of
    (including any increase in the amounts available thereunder or the inclusion of an additional borrower thereunder), or other action
    or inaction under, the Credit Documents or any other related document or instrument, or the Obligations;
	 	 	 
	 	(vii)	any
    discontinuance, termination or other variation of any terms or conditions of any transaction with, Debtor or any other Person;
	 	 	 
	 	(viii)	any
    change in the ownership, control, name, objects, businesses, assets, capital structure or constitution of Debtor, Guarantor or any
    reorganization (whether by way of reconstruction, consolidation, amalgamation, merger, transfer, sale, lease or otherwise) of Debtor,
    Guarantor or their respective businesses;
	 	 	 
	 	(ix)	any
    dealings with the security which Debentureholder holds or may hold pursuant to the terms and conditions of the Credit Documents,
    including the taking, giving up or exchange of securities, their variation or realization, the accepting of compositions and the
    granting of releases and discharges;
	 	 	 
	 	(x)	any
    limitation of status or power, disability, incapacity or other circumstance relating to Debtor, Guarantor, or any other Person, including
    any Insolvency Event involving or affecting Debtor, Guarantor, or any other Person or any action taken with respect to this Guarantee
    by any trustee or receiver, or by any court, in any such proceeding, whether or not Guarantor shall have notice or knowledge of any
    of the foregoing;
	 	 	 
	 	(xi)	any
    impossibility, impracticability, frustration of purpose, force majeure or illegality of any Credit Document, or the occurrence of
    any change in the laws, rules, regulations or ordinances of any jurisdiction or by any present or future action of (A) any Governmental
    Authority that amends, varies, reduces or otherwise affects, or purports to amend, vary, reduce or otherwise affect, any of the Obligations
    or the obligations of Guarantor under this Guarantee, or (B) any court order that amends, varies, reduces or otherwise affects any
    of the Obligations;
	 	 	 
	 	(xii)	any
    taking or failure to take security, any loss of, or loss of value of, any security, or any invalidity, non-perfection or unenforceability
    of any security held by Debentureholder, or any exercise or enforcement of, or failure to exercise or enforce, security, or irregularity
    or defect in the manner or procedure by which Debentureholder realizes on such security; 

 

    	 

    	-7-

     

	 	(xiii)	any
    application of any sums received to the Obligations, or any part thereof, and any change in such application; and
	 	 	 
	 	(xiv)	any
    other circumstances which might otherwise constitute a defence available to, or a discharge of, Guarantor, Debtor or any other Person
    in respect of the Obligations or this Guarantee.

 

	 	(h)	Subject
    only to Sections 8(a) and (b) requiring demand, Guarantor hereby waives notice of the acceptance of this Guarantee and of presentment,
    demand and protest and notices of non-payment and dishonour and any other demands and notices required by any Applicable Law.
	 	 	 
	 	(i)	From
    the date or dates upon which any demand is made against Guarantor under this Section 8 until the Obligations have been performed
    and discharged in full, Guarantor shall not (i) claim any set-off or counterclaim against Debtor; (ii) make or enforce any claim
    or right (including a right of subrogation or contribution) against Debtor to prove in competition with Debentureholder in the event
    of an Insolvency Event of Debtor or in respect of any outstanding liability of Debtor hereunder; or (iii) in competition with Debentureholder
    claim the benefit of any security or guarantee now or hereafter held by Debentureholder for any money or liabilities due or incurred
    by Debtor to Debentureholder or any share therein.
	 	 	 
	 	(j)	Debentureholder
    shall not be obligated before taking any steps to enforce this Guarantee (i) to take any steps or proceedings or other action whatsoever
    or obtain any judgment against Debtor or any other Person in any court or tribunal, (ii) to make or file any claim in an Insolvency
    Event in respect of Debtor or any other Person, (iii) to exercise any diligence against Debtor, or (iv) resort to any other means
    of payment.
	 	 	 
	 	(k)	Nothing
    herein contained shall restrict or adversely affect or be construed to restrict or adversely affect any right which Debentureholder
    may have to set-off any Obligations owed by Guarantor under this Guarantee to Debentureholder against any obligations owed by Debentureholder
    to Guarantor, regardless of the place of payment or currency of such Obligations.

 

		9.	SECURITY

 

		9.1	Security
    Package

 

As
general and continuing collateral security for the due and punctual payment of the Principal Amount, interest and all other monies payable
hereunder and due and punctual payment and performance of all other PF Obligations, each Obligor shall on or before the Funding Date
(i) grant to the Security Agent on behalf of Debentureholder and the other Sprott Entities a continuing and first-ranking security interest
and charge over all of their property and assets (subject only to Permitted Liens) pursuant to Security in form and substance satisfactory
to Debentureholder’s counsel, acting reasonably; and (ii) cause to be delivered to Debentureholder, an Idaho, Nevada and Ontario
legal opinion (and any other relevant legal jurisdiction), in form and substance satisfactory to Debentureholder, acting reasonably,
of the Obligors’ legal counsel addressed to Debentureholder relating to (A) the legal status of the Obligors, (B) the corporate
power and authority of each Obligor to execute, deliver and perform the Security to which it a party, (C) the authorization, execution
and delivery of the Security, (D) enforceability of the Security and the validity of the security interests, mortgages and charges created
thereunder, (E) the due registration or filing of the Security and, where applicable, the perfection of the security interest and/or
opposability against third parties of the charge under the Security, and (F) registration fees and any documentary or stamp tax.

 

    	 

    	-8-

     

		9.2	DACAs

 

As
soon as reasonably practicable and in any event no later than the date that is 30 days following the Funding Date (or such later date
as the Debentureholder may agree in its sole discretion), each Obligor shall enter into, and arrange for the relevant depositary bank
to enter into, deposit account control agreements, in form and substance satisfactory to the Security Agent, acting reasonably, with
respect to each deposit account of such Obligor, as general and continuing collateral security for the due and punctual payment of the
Principal Amount, interest and all other monies payable hereunder and due and punctual payment and performance of all other PF Obligations.

 

		10.	REPAYMENT

 

		10.1	Debtor’s
    Privileges

 

	 	(a)	On
    each Quarter End, Debtor shall have the option to pay the accrued and unpaid interest due on such Quarter End, in whole but not in
    part, through the issuance of common shares in the capital of Debtor (the “Common Shares”) at the Debtor Interest
    Conversion Price provided that Debtor elects to pay accrued and unpaid interest due on such Quarter End under all Convertible Debentures
    through the issuance of Common Shares. If Debtor intends to exercise its conversion rights hereunder at any time it shall give Debentureholder
    not less than five (5) Business Days prior notice of such intention.
	 	 	 
	 	(b)	Debtor
    shall also have the option, in connection with any prepayment of the Principal Amount under Section 4, to pay interest, in whole
    but not in part, accrued as of the date of prepayment, through the issuance of Common Shares at the Debtor Interest Conversion Price.
    If Debtor intends to exercise its conversion rights hereunder at any time it shall give Debentureholder prompt (and in any event,
    at least five (5) Business Days prior to the date upon which such accrued but unpaid interest would otherwise be due and payable
    hereunder) written notice of such intention.
	 	 	 
	 	(c)	With
    respect to any Common Shares which may be issued upon Debtor’s option in accordance with this Section 10.1, as required from
    time to time under the Applicable Securities Legislation which governs Debtor or any hold period imposed by a regulatory authority,
    Debentureholder agrees to be bound by any applicable hold period. The certificates evidencing the Common Shares shall contain the
    following legend:

 

“UNLESS
PERMITTED UNDER SECURITIES LEGISLATION,THE HOLDER OF THIS SECURITY MUST NOT TRADE THIS SECURITY BEFORE MAY 29,2022.”

 

THE
ISSUANCE OF THE SECURITIES REPRESENTED BY THIS ENTRY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”), OR ANY STATE SECURITIES LAWS AND NEITHER SUCH SECURITIES NOR ANY INTEREST THEREIN MAY BE OFFERED, SOLD, PLEDGED, ASSIGNED
OR OTHERWISE TRANSFERRED EXCEPT (1) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND APPLICABLE STATE SECURITIES
LAWS OR (2) PURSUANT TO AN AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND APPLICABLE STATE SECURITIES
LAWS, IN WHICH CASE THE HOLDER MUST, PRIOR TO SUCH TRANSFER, FURNISH TO THE COMPANY AN OPINION OF COUNSEL, WHICH COUNSEL AND OPINION
ARE REASONABLY SATISFACTORY TO THE COMPANY, THAT SUCH SECURITIES MAY BE OFFERED, SOLD, PLEDGED, ASSIGNED OR OTHERWISE TRANSFERRED IN
THE MANNER CONTEMPLATED PURSUANT TO AN AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND APPLICABLE STATE
SECURITIES LAWS.

 

    	 

    	-9-

     

		10.2	Manner
    of Debtor’s Exercise of Right to Pay Interest with Common Shares

 

	 	(a)	If
    Debtor wishes to pay the accrued and unpaid interest under this Debenture through the issuance of Common Shares pursuant to Section
    10.1, it shall deliver to Debentureholder, at least five (5) Business Days prior to the Debtor Interest Conversion Date, the Debtor
    Interest Conversion Form set forth in Exhibit “B” hereto (the “Debtor Interest Conversion Form”),
    duly executed by the Obligors, irrevocably exercising Debtor’s right to pay the accrued and unpaid interest set out in the
    Debtor Interest Conversion Form through the issuance of Common Shares and specifying the applicable Debtor Interest Conversion Date
    (being a Quarter End or, in the case of Section 10.1(b), such other date upon which accrued but unpaid interest otherwise becomes
    due and payable hereunder) upon which such right will be exercised in accordance with the provisions hereof. Upon delivery of the
    Debtor Interest Conversion Form, Debentureholder or its nominee, participant or assignee shall be entitled to be entered in the books
    of Debtor as at the Debtor Interest Conversion Date as the holder of the number of Common Shares received in lieu of the cash payment
    of the accrued and unpaid interest in accordance with the provisions hereof and, as soon as practicable thereafter and in any event
    within three (3) Business Days, Debtor shall deliver or cause to be delivered to Debentureholder or, subject as aforesaid, its nominee,
    participant or assignee, a certificate for such Common Shares.
	 	 	 
	 	(b)	For
    the purposes hereof, the “Debtor Interest Conversion Date” shall be the date specified in the Debtor Interest
    Conversion Form delivered by Debtor to Debentureholder in accordance with Section 10.2(a) as the effective date upon which Debtor
    intends to exercise its conversion privilege in accordance with Section 10.1(a) or (b).
	 	 	 
	 	(c)	Debentureholder
    shall keep records of payments and conversions and such records shall be prima facia evidence of such payments and conversions.
	 	 	 
	 	(d)	Common
    Shares issued in lieu of cash payments of interest owing under this Debenture in accordance with the terms hereof shall be entitled
    to all rights and privileges accorded to holders of record of Common Shares on and after the Debtor Interest Conversion Date, from
    which date they will for all purposes be and be deemed to be issued and outstanding as fully paid and non-assessable Common Shares.
	 	 	 
	 	(e)	If
    Debtor elects to pay the accrued and unpaid interest under this Debenture through the issuance of Common Shares pursuant to Section
    10.1, Debtor shall take all such actions and issue, execute and deliver, as applicable, all such certificates, documents and instruments
    as shall be required to validly issue as fully paid and non-assessable such Common Shares in accordance with the terms hereof and
    entitle Debentureholder (or its nominee, participant or assignee) to all rights and privileges accorded to holders of record of Common
    Shares on and after the Debtor Interest Conversion Date.

 

    	 

    	-10-

     

		10.3	Debentureholder’s
    Privilege

 

Debentureholder
may, at its option from the date hereof until the earlier of the date of (i) repayment in full of the Principal Amount, and (ii) the
Maturity Date (such date is hereinafter referred to as the “Debenture Repayment Date”), elect to receive Common Shares,
in lieu of cash payment of the outstanding Principal Amount at the Debentureholder Conversion Price. If Debentureholder does not elect
to receive Common Shares in lieu of cash payment of the outstanding Principal Amount on or before the Debenture Repayment Date, Debtor
shall repay the outstanding Principal Amount, and all accrued and unpaid interest and any other amounts owing hereunder, in cash (subject
to Debtor’s right to pay accrued and unpaid interest by issuing Common Shares in accordance with Section 10.1), on the Debenture
Repayment Date. For greater certainty, no Prepayment Interest Premium on any part of the Principal Amount will be owing in the event
of any such election by Debentureholder to receive Common Shares in lieu of cash payment of the Principal Amount or any such repayment
in cash of the Principal Amount on the Maturity Date.

 

		10.4	Manner
    of Debentureholder’s Exercise of Right to Common Shares

 

	 	(a)	If
    Debentureholder wishes to exercise the optional conversion privilege contained in Section 10.3 of this Debenture, Debentureholder
    shall deliver to Debtor at least ten (10) Business Days prior to the Debentureholder Conversion Date the duly completed written notice
    substantially in the form of Exhibit “C” attached hereto (the “Debentureholder Conversion Form”),
    duly executed by Debentureholder, exercising its right to convert the outstanding Principal Amount into Common Shares on the Debentureholder
    Conversion Date and otherwise in accordance with the provisions hereof. Upon the delivery of the Debentureholder Conversion Form,
    Debentureholder or its nominee, participant or assignee shall be entitled to be entered into the books of Debtor as at the Debenture
    Repayment Date as the holder of the number of Common Shares received in lieu of the cash payment of the Principal Amount and, as
    soon as practicable thereafter and in any event within three (3) Business Days, Debtor shall deliver to Debentureholder or its nominee,
    participant or assignee a certificate for such Common Shares. 
	 	 	 
	 	(b)	Upon
    (i) the Debentureholder exercising its right to convert all outstanding Principal Amount, (ii) the Debentureholder receiving payment
    of all accrued and unpaid interest and other amounts owing to it hereunder, and (iii) receipt by Debentureholder or its nominee,
    participant or assignee of certificates representing the Common Shares issuable upon such conversion, satisfactory to Debentureholder,
    Debentureholder shall surrender this Debenture to Debtor at the address listed in Section 15 against receipt of an acknowledgement
    from the Obligors, satisfactory to Debentureholder, that any contingent obligations stated to survive termination, continue in full
    force and effect. 
	 	 	 
	 	(c)	The
    surrender of this Debenture and the notice given pursuant to Section 10.4(a) shall be deemed to constitute a contract between Debentureholder
    and Debtor whereby (i) Debentureholder or its nominee, participant or assignee subscribes for the number of Common Shares which Debentureholder
    shall be entitled to receive on such conversion and (ii) upon receipt of certificates representing the Common Shares issuable upon
    conversion hereunder and payment to Debentureholder of accrued and unpaid interest and all other amounts owing hereunder, Debentureholder
    releases Debtor from all liability under this Debenture with respect to the Principal Amount and any accrued but unpaid interest.
    For greater certainty, any such release excludes any contingent obligations stated to survive termination of the Debenture.

 

    	 

    	-11-

     

	 	(d)	With
    respect to any Common Shares which may be issued upon conversion in accordance with Section 10.3, as required from time to time under
    the securities legislation which governs Debtor or any hold period imposed by a regulatory authority, each of Debentureholder agrees
    to be bound by any applicable hold period. The certificates evidencing the Common Shares shall contain the following legend:

 

“UNLESS
PERMITTED UNDER SECURITIES LEGISLATION, THE HOLDER OF THIS SECURITY MUST NOT TRADE THIS SECURITY BEFORE MAY 29, 2022.”

 

[THE
ISSUANCE OF THE SECURITIES REPRESENTED BY THIS ENTRY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”), OR ANY STATE SECURITIES LAWS AND NEITHER SUCH SECURITIES NOR ANY INTEREST THEREIN MAY BE OFFERED, SOLD, PLEDGED, ASSIGNED
OR OTHERWISE TRANSFERRED EXCEPT (1) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT AND APPLICABLE STATE SECURITITES
LAWS OR (2) PURSUANT TO AN AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND APPLICABLE STATE SECURITIES
LAWS, IN WHICH CASE THE HOLDER MUST, PRIOR TO SUCH TRANSFER, FURNISH TO THE COMPANY AN OPINION OF COUNSEL, WHICH COUNSEL AND OPINION
ARE REASONABLY SATISFACTORY TO THE COMPANY, THAT SUCH SECURITIES MAY BE OFFERED, SOLD, PLEDGED, ASSIGNED OR OTHERWISE TRANSFERRED IN
THE MANNER CONTEMPLATED PURSUANT TO AN AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND APPLICABLE STATE
SECURITIES LAWS.]

 

	 	(e)	For
    the purposes hereof, the “Debentureholder Conversion Date” shall be deemed to be the date specified in the Debentureholder
    Conversion Form delivered by Debentureholder to Debtor in accordance with Section 10.4(a).
	 	 	 
	 	(f)	Debentureholder
    shall keep records of payments and conversions and such records shall be prima facia evidence of such payments and conversions.
	 	 	 
	 	(g)	Common
    Shares issued upon conversion of this Debenture in accordance with the terms hereof shall be entitled to all rights and privileges
    accorded to holders of record of Common Shares on and after the Debentureholder Conversion Date, from which date they will for all
    purposes be and be deemed to be issued and outstanding as fully paid and non-assessable Common Shares.

 

    	 

    	-12-

     

	 	(h)	If
    Debentureholder elects to receive Common Shares in lieu of cash payment of the Principal Amount pursuant to Section 10.3, Debtor
    shall take all such actions and issue, execute and deliver, as applicable, all such certificates, documents and instruments as shall
    be required to validly issue as fully paid and non-assessable such Common Shares in accordance with the terms hereof and entitle
    Debentureholder (or its nominee. participant or assignee) to all rights and privileges accorded to holders of record of Common Shares
    on and after the Debenture Conversion Date.

 

		10.5	No
    Requirement to Issue Fractional Shares

 

Debtor
shall not issue fractional Common Shares upon the exercise of Debtor’s interest privileges under Section 10.1 or Debentureholder’s
privilege under Section 10.3. If any fractional interest in a Common Share would, except for the provisions of this Section 10.5, be
deliverable upon conversion, any such fractional interest shall be rounded down to the nearest whole number of Common Shares.

 

		10.6	Conversion
    Adjustment

 

The
Debentureholder Conversion Price in effect at any time is subject to adjustment from time to time in the events and in the manner provided
as follows:

 

	 	(a)	Common
    Share Reorganization. If and whenever at any time after the date hereof and prior to the Maturity Date, Debtor:

 

	 	(i)	issues
    Common Shares or securities exchangeable for or convertible into Common Shares to the holders of the Common Shares as a stock dividend
    or rights to holders of the Common Shares to acquire additional Common Shares pursuant to a rights offering;
	 	 	 
	 	(ii)	makes
    a distribution on its outstanding Common Shares payable in Common Shares or securities exchangeable for or convertible into Common
    Shares;
	 	 	 
	 	(iii)	subdivides
    or re-divides its outstanding Common Shares into a greater number of shares; or
	 	 	 
	 	(iv)	consolidates
    its outstanding Common Shares into a smaller number of shares,

 

(any
of such events being called a “Common Share Reorganization”), then the Debentureholder Conversion Price will be adjusted
effective immediately after the effective date or record date for the happening of a Common Share Reorganization, as the case may be,
at which the holders of Common Shares are determined for the purpose of the Common Share Reorganization by multiplying the Debentureholder
Conversion Price in effect immediately prior to such effective date or record date by a fraction, the numerator of which is the number
of Common Shares outstanding on such effective date or record date before giving effect to such Common Share Reorganization and the denominator
of which is the number of Common Shares outstanding immediately after giving effect to such Common Share Reorganization (including, in
the case where rights to acquire Common Shares or securities exchangeable for or convertible into Common Shares are distributed, the
number of Common Shares that would have been outstanding had all such rights been exercised to acquired Common Shares or securities been
exchanged for or converted into Common Shares on such effective date or record date).

 

    	 

    	-13-

     

	 	(b)	Capital
    Reorganization. If and whenever at any time after the date hereof and prior to the Maturity Date there is a reclassification
    of the Common Shares outstanding at any time or a change of the Common Shares into other shares or into other securities (other than
    a Common Share Reorganization), or a consolidation, amalgamation, arrangement or merger of Debtor with or into any other corporation
    or other entity (other than a consolidation, amalgamation, arrangement or merger which does not result in any reclassification of
    the outstanding Common Shares or a change of the Common Shares into other shares), or a transfer of the undertaking or assets of
    Debtor as an entirety or substantially as an entirety to another corporation or other entity (any of such events being called a “Capital
    Reorganization”), Debentureholder, upon the exercise of any conversion privilege contained in the Debenture after the effective
    date of such Capital Reorganization, will be entitled to receive in lieu of the number of Common Shares to which Debentureholder
    was theretofore entitled upon such conversion, the aggregate number of shares, other securities or other property which Debentureholder
    would have been entitled to receive as a result of such Capital Reorganization if, on the effective date thereof, Debentureholder
    had been the registered holder of the number of Common Shares to which Debentureholder was theretofore entitled upon conversion of
    this Debenture. If determined appropriate by action of the directors of Debtor, appropriate adjustments will be made as a result
    of any such Capital Reorganization in the application of the provisions set forth herein with respect to the rights and interests
    thereafter of Debentureholder to the end that the provisions set forth herein will thereafter correspondingly be made applicable
    as nearly as may reasonably be practicable in relation to any shares, other securities or other property thereafter deliverable upon
    the exercise of a conversion privilege. Any such adjustment must be made by and set forth in an amendment to this Debenture approved
    by action of the directors of Debtor and will for all purposes be conclusively deemed to be an appropriate adjustment.

 

		10.7	Rules
    Regarding Calculation of Adjustment of Debentureholder Conversion Price

 

	 	(a)	Cumulative.
    The adjustments provided for in Section 10.6 are cumulative and will, in the case of adjustments to the Debentureholder Conversion
    Price, be computed to the nearest one-tenth of one cent and will be made successively whenever an event referred to therein occurs,
    subject to the following provisions of this Section 10.7.
	 	 	 
	 	(b)	Minimum
    1% Change. No adjustment in the Debentureholder Conversion Price is required to be made unless such adjustment would result
    in a change of at least 1% in the prevailing Debentureholder Conversion Price; provided however that any adjustments which, except
    for the provisions of this Section 10.7, would otherwise have been required to be made, will be carried forward and taken into account
    in any subsequent adjustments.
	 	 	 
	 	(c)	Discretion
    of the Board. In case Debtor or Guarantor after the Effective Date takes any action affecting the Common Shares, other than
    actions described in Section 10.6, which in the opinion of the board of directors of Debtor would materially affect the rights of
    Debentureholder hereunder, the Debentureholder Conversion Price will be adjusted in such manner, if any, and at such time, by action
    of the directors of Debtor, but subject in all cases to any necessary regulatory approval. Failure to take any action by the directors
    of Debtor so as to provide for an adjustment on or prior to the effective date of any action by Debtor affecting the Common Shares
    will be conclusive evidence that the board of directors of Debtor has determined that it is equitable to make no adjustment in the
    circumstances.

 

    	 

    	-14-

     

	 	(d)	Disputes.
    If at any time a dispute arises with respect to adjustments provided for in Section 10.6, such dispute will be conclusively
    determined by a firm of independent chartered accountants as may be selected by Debentureholder and approved by Obligors acting reasonably,
    and any such determination will be binding upon the Obligors and Debentureholder. The Obligors will provide such firm of independent
    chartered accountants with access to all necessary records of Obligors.
	 	 	 
	 	(e)	Notice
    of Event Requiring Adjustment. Debtor will from time to time, as soon as is reasonably practicable after the occurrence of
    any event which requires an adjustment or readjustment as provided in Section 10.6, give written notice to Debentureholder specifying
    the event requiring such adjustment or readjustment and the results thereof, including the resulting Debentureholder Conversion Price,
    and setting forth in reasonable detail the method of calculation and the facts upon which such calculation is based.
	 	 	 
	 	(f)	Notice
    of Intention to Fix Record Date. Debtor covenants to and in favour of Debentureholder that so long as any Principal Amount
    hereunder remains outstanding, it will give written notice to Debentureholder of its intention to fix a record date for any event
    referred to in Section 10.6 (other than a subdivision or consolidation of Common Shares) which may give rise to an adjustment in
    the Debentureholder Conversion Price and, in each case, such notice must specify the particulars of such event, the record date and
    the effective date for such event; provided that Debtor is only required to specify in such notice such particulars of such event
    as have been fixed and determined on the date on which such notice is given. Such notice must be given not less than five (5) Business
    Days, in each case, prior to such applicable record date or effective date.

 

		11.	REPRESENTATIONS
    AND WARRANTIES

 

		11.1	Obligors’
    Representations and Warranties

 

Each
Obligor hereby represents and warrants to Debentureholder as of the date of this Debenture and as of the Funding Date (unless otherwise
specified in Exhibit “D”) and so long as any Obligations remain outstanding, as set out in Exhibit “D”
and acknowledges that Debentureholder is relying upon such representations and warranties in entering into the transactions that
give rise to the Principal Amount, which representations and warranties shall survive the execution and delivery of this Debenture.

 

		11.2	Knowledge
    of Obligors

 

Where
any representation or warranty contained in Exhibit “D” is expressly qualified by reference to the “knowledge”
of Obligors, it shall be deemed to refer to the actual knowledge of Richard Williams, as Executive Chairman of Debtor, Sam Ash, as Chief
Executive Officer of Debtor and President of Guarantor, David Wiens, as Chief Financial Officer of Debtor, and Bradley Barnett, as Vice
President of Sustainability of Debtor and Secretary of Guarantor, and all information which ought to have been known by each of them
after conducting a reasonable inquiry into the matters in question, whether or not any such inquiry was actually made.

 

		11.3	Accredited
    Investor

 

Debentureholder
hereby represents and warrants to the Obligors that Debentureholder is an accredited investor, within the meaning of National Instrument
45-106 – Prospectus Exemptions.

 

    	 

    	-15-

     

		12.	COVENANTS

 

Each
Obligor covenants and agrees with Debentureholder that, unless compliance has been waived in writing by Debentureholder and so long as
any Obligations remain outstanding:

 

	 	(a)	Punctual
    Payment of Obligations. Each Obligor shall make payment of, and perform, all of its Obligations when due.
	 	 	 
	 	(b)	Reserve
    Common Shares. Debtor covenants to reserve and keep available, at all times, such number of Common Shares as may be reasonably
    required to satisfy the conversion rights under this Debenture, in whole or in part, into Common Shares pursuant to Section 10. All
    Common Shares which shall so be issuable shall be duly and validly issued, fully paid and non-assessable.
	 	 	 
	 	(c)	No
    Material Change in Conducting of Business. Each Obligor shall, and it shall cause each of its Subsidiaries to, carry out and
    perform all operations and activities in a commercially prudent manner and in accordance with all Applicable Laws, all applicable
    Authorizations and Other Rights and Good Practice Standards.
	 	 	 
	 	(d)	Compliance
    with Laws and Contracts. Each Obligor will, and shall cause each of its Subsidiaries to, obtain and maintain in force (or where
    appropriate, promptly renew) all Authorizations reasonably necessary for carrying out its business and operations generally, including
    those Authorizations required under each Transaction Document, and at all times comply with all Applicable Laws and regulations relating
    to it and its business other than (except in the case of Anti-Bribery Laws and Anti-Money Laundering Laws) where such noncompliance
    would not reasonably be expected to have a Material Adverse Effect.
	 	 	 
	 	(e)	Maintenance
    of Accounting Methods and Financial Records. Each Obligor will, and shall cause each of its Subsidiaries to, maintain a system
    of accounting which is established and administered in accordance with US GAAP consistently applied, keep adequate records and books
    of account in which accurate and complete entries shall be made in accordance with such accounting principles reflecting all transactions
    required to be reflected by such accounting principles, keep accurate and complete records of any property owned by it.
	 	 	 
	 	(f)	Books;
    Records; Inspections. Each Obligor will keep, and shall cause each of its Subsidiaries to keep, true, complete and accurate Books
    and Records of all of its operations and activities in a manner consistent with customary and prudent commercial practice. Subject
    to the confidentiality provisions of this Debenture, each Obligor shall, and shall cause each of its Subsidiaries to, on written
    request by Debentureholder, provide copies to Debentureholder, and permit Debentureholder and its authorized representatives to perform
    audits or other reviews and examinations from time to time and at Debentureholder’s sole expense, of Debtor’s and each
    Subsidiaries’ (including Guarantor), Books and Records that are available to the shareholders of Debtor.
	 	 	 
	 	(g)	Maintenance
    of Legal Existence. Each Obligor shall, and shall cause each of its Subsidiaries to, preserve and maintain its corporate existence
    in good standing.
	 	 	 
	 	(h)	Notice
    to Debentureholder of an Event of Default. Upon either Obligor becoming aware of the occurrence of either an Event of Default
    or Pending Event of Default, Debtor shall promptly deliver to Debentureholder a notice specifying the nature and date of occurrence
    of such Event of Default or Pending Event of Default, the Obligors’ assessment of the duration and effect thereof and the action
    which the Obligors propose to take with respect thereto.

 

    	 

    	-16-

     

	 	(i)	Payment
    of Taxes/Claims. Each Obligor will timely file all Tax returns as and when required pursuant to Applicable Law and pay and discharge
    or cause to be paid and discharged, promptly when due, all Taxes imposed upon them or in respect of the Project or any of the Project
    Assets or upon the income or profits therefrom as well as all claims of any kind (including claims for labour, materials, supplies
    and rent) which, if unpaid, might become a Lien upon any of its property or assets (other than Taxes the amount, applicability or
    validity of which are being contested in good faith by appropriate proceedings diligently conducted), withhold and collect all Taxes
    required to be withheld and collected by them and remit such Taxes to the appropriate Governmental Authority at the time and in the
    manner required by Applicable Law, and pay and discharge immediately upon knowledge by an Obligor of the existence of any Lien unless
    such Lien is a Permitted Lien.
	 	 	 
	 	(j)	No
    Amalgamation, Merger, Wind-Up, Change in Control, Etc. Neither Obligor shall consolidate, amalgamate with, or merge with or into,
    or transfer all or substantially all its assets to, or reorganize, reincorporate or reconstitute into or as another entity without
    the prior written consent of Debentureholder.
	 	 	 
	 	(k)	Maintain
    Listing. Each Obligor shall take all steps necessary to ensure that the Common Shares and any Common Shares issued to Debentureholder
    pursuant to this Debenture, are listed and posted for trading on any stock exchange which Debtor’s Common Shares are posted
    and listed for trading on (subject, in the case of any Common Shares issued to Debentureholder pursuant to the terms hereof, to any
    applicable hold periods, not to exceed six months plus one day), and will use commercially reasonable efforts to maintain such listing
    and posting for trading of such Common Shares on the Stock Exchange, and will use commercially reasonable efforts to maintain Debtor’s
    status as a “reporting issuer” not in default of the requirements of the Applicable Securities Legislation.
	 	 	 
	 	(l)	Reporting.
    The Obligors shall deliver the following to Debentureholder:

 

	 	(i)	monthly,
    quarterly and annual customary operational, exploration and financial reports, to be provided within ten (10) Business Days of completion,
    provided that monthly reports are only to be provided if, as and when prepared by or on behalf of either Obligor;
	 	 	 
	 	(ii)	promptly
    upon preparation thereof, reasonably detailed environmental reports, reports on safety and community matters, operational budgets,
    annual production forecast, and life of mine operating plans (and notice of any material change to the life of mine operating plan
    promptly following such change);
	 	 	 
	 	(iii)	annual
    reserve and resource reports prepared in accordance with NI 43-101;
	 	 	 
	 	(iv)	annual
    reports detailing reconciliation of resource model, mine grade control and process facilities;
	 	 	 
	 	(v)	any
    other material engineering or economic studies (as and when prepared);

 

    	 

    	-17-

     

	 	(vi)	on
    an annual basis, list of the Mining Rights underlying the Property or any changes from the prior year’s list;
	 	 	 
	 	(vii)	copies
    of all material contracts, studies or reports relating to the Property, the Mine or the Products that may be reasonably requested
    by Debentureholder and promptly following the receipt thereof copies of any notice of default, termination or enforcement action
    under any such contract or occurrence of any other material event in respect of the Property or Mine;
	 	 	 
	 	(viii)	notice
    of any other material event concerning the Project, the Property, either Obligor including any force majeure, labour or civil disruption,
    actual or threatened legal action, actual or threatened withdrawal of any permit or third party approval, any material human rights,
    community, health and safety, other social, animal welfare, conservation, other environmental, or corporate governance controversies
    or initiatives or any change in law materially impacting the Property; 
	 	 	 
	 	(ix)	within
    90 days of the end of each fiscal year and to the extent prepared by management, Debtor shall deliver to Debentureholder its unaudited,
    unconsolidated financial statements and to the extent prepared and delivered to any third party, its audited unconsolidated financial
    statements; and
	 	 	 
	 	(x)	such
    other operational, exploration and financial information concerning the Obligors or the Project as Debentureholder shall reasonably
    request from time to time.

 

	 	(m)	Further
    Assurances. Each Obligor will, and will cause any Subsidiary to, execute and deliver to Debentureholder all such documents, instruments
    and agreements and do all such other acts and things as may be reasonably required, in the opinion of Debentureholder, to carry out
    the purpose of the Transaction Documents or any other document to which it is a party or to enable Debentureholder to exercise and
    enforce its rights under hereunder or thereunder.
	 	 	 
	 	(n)	Cash
    Balance. Each Obligor shall maintain at all times a positive cash balance.
	 	 	 
	 	(o)	Working
    Capital. Each Obligor shall maintain positive working capital as at each quarterly and annual filing date, as determined from
    Debtor’s most recent annual and quarterly financial statements that are filed and available on SEDAR and/or EDGAR, where working
    capital is the current assets less the current liabilities (both as defined by US GAAP) of Debtor on a consolidated basis.
	 	 	 
	 	(p)	Indebtedness.
    The Obligors shall not create, incur, assume or permit to exist any Funded Debt other than Permitted Indebtedness.
	 	 	 
	 	(q)	No
    Liens. The Obligors shall not create, incur, assume or permit to exist any Lien on any property or asset now owned or hereafter
    acquired by the Obligors or any one of them except Permitted Liens.
	 	 	 
	 	(r)	No
    Dispositions. The Obligors shall not Dispose of (whether in one or a series of transactions) any of the Property or any Project
    Assets, or enter into any agreement to do any of the foregoing, except for (i) the sale of inventory in the ordinary course of business,
    or (ii) the sale of equipment that is obsolete, surplus, worn out or no longer useful for the purposes of constructing and developing
    the Project. Without limiting the generality of the foregoing, Debtor shall not Dispose of any of the Equity Securities in the capital
    of Guarantor.

 

    	 

    	-18-

     

	 	(s)	No
    Investments. No Obligor shall make (a) any direct or indirect investment in or purchase or other acquisition of Equity Securities
    of any other Person, (b) any loan or advance to, purchase of debt securities of, or arrangement for the purpose of providing credit
    to (excluding extensions of trade credit in the ordinary course of business in accordance with customary commercial terms) any other
    Person, or (c) any capital contribution to (whether by means of a transfer of cash or other property or any payment for property
    or services for the account or use of) any other Person; except:

 

	 	(i)	investments
    (including by subscription in Equity Securities of), loans, advances or capital contributions made by Debtor in or to Guarantor;
	 	 	 
	 	(ii)	investments,
    advances or capital contributions in connection with a joint venture between Debtor and MineWater Finance LLC relating to the London
    mining district in Colorado, as publicly disclosed by Debtor on October 4, 2021, provided that, and only to the extent that, such
    investments, advances or capital contributions are set out in Debtor’s board-approved Project Financial Plan (as defined in
    the Exclusivity Agreement) that has been approved by Debentureholder; or
	 	 	 
	 	(iii)	with
    the prior written consent of Debentureholder.

 

	 	(t)	No
    Acquisitions. No Obligor shall purchase or otherwise acquire regardless of how accomplished or effected, (a) any other Person
    (including any purchase or acquisition of such number of the issued and outstanding securities of, or such portion of equity interest
    in, such other Person so that such other Person becomes a Subsidiary of the purchaser or of any of its Affiliates) or of all or substantially
    all of the property of any other Person, or (b) any division, business, operation or undertaking of any other Person or of all or
    substantially all of the property of any division, business, operation or undertaking of any other Person; except for the acquisition
    of the Property from Placer Mining Inc. or with the prior written consent of Debentureholder.
	 	 	 
	 	(u)	No
    Distributions. No Obligor shall (i) retire, redeem, retract, purchase or otherwise acquire any Equity Securities of such Obligor;
    (ii) declare or pay any dividend, return of capital or other distribution (in cash, securities or other property, or otherwise) of,
    on or in respect of, any Equity Securities of such Obligor; (iii) make any payment or distribution (in cash, securities or other
    property, or otherwise) on or in respect of, its Equity Securities; (iv) pay, redeem, repurchase or otherwise acquire any Funded
    Debt, including any payment on account of principal, interest, bonus, premium, make-whole or otherwise; or (v) pay any management,
    consulting or similar fee or any bonus payment or comparable payment, or by way of gift or gratuity, to any Related Party of such
    Person or to any director or officer thereof, excluding, for greater certainty, (i) employment compensation in the ordinary course
    of business, and (ii) principal, interest and other amounts that may become payable under this Debenture or the Convertible Debentures.
	 	 	 
	 	(v)	EPA
    Settlement. Each Obligor shall provide all such bonds, letters of credit and other assurances, indemnifications, instruments
    and documents as may be required to complete the Obligors’ financial assurance obligations under the EPA Settlement Agreement
    and shall take all such actions and steps and do all such things as may be required to cause the release of the Liens in favour of
    the EPA as soon as reasonably practicable and in any event on or before 180 days after the First Amendment Effective Date. Each Obligor
    shall comply in all respects with its obligations under the EPA Settlement Agreement and in all material respects with all other
    agreements, Authorizations and Other Rights necessary for the construction, development and operation of the Project as contemplated
    by the current development or mine plan.

 

    	 

    	-19-

     

	 	(w)	Project
    Maintenance. Each Obligor shall all times do or cause to be done all things necessary to maintain the Project in good standing,
    including paying or causing to be paid all Taxes owing in respect of the Project Assets, performing or causing to be performed all
    required assessment work thereon, paying or causing to be paid all maintenance fees and other amounts owing in respect of the Project
    Assets, paying or causing to be paid all rents and other payments in respect of leased properties forming a part thereof and otherwise
    maintaining the Property and other Project Assets in accordance with Applicable Laws;

 

If
an Obligor fails to perform any covenant or any other provision of any of the Credit Documents, Debentureholder may, in its discretion,
perform any such covenant capable of being performed by it, and if any such covenant requires the payment of money Debentureholder may,
in its discretion, make any such payments. All sums so expended by Debentureholder shall be payable on demand and, until paid, shall
be added to, and be deemed to be included in the Obligations and shall bear interest at the same rate applicable to principal.

 

		13.	DEFAULT

 

	 	(a)	The
    occurrence of any one or more of the following events shall constitute an “Event of Default” under this Debenture:

 

	 	(i)	Payment.
    If Debtor fails to pay any Principal Amount when due hereunder or fails to pay interest or any other amount when due hereunder and,
    in the case of interest or such other amount, such failure remains outstanding and unremedied for two (2) Business Days;
	 	 	 
	 	(ii)	Representations
    and Warranties. If any representation or warranty made in any of the Credit Documents by either Obligor, or if any certificate
    or opinion furnished to Debentureholder pursuant to the provisions hereof proves to have been materially incorrect, incomplete or
    misleading as of the time made or repeated or deemed to be made or repeated, and such inaccuracy is not remedied within the Cure
    Period;
	 	 	 
	 	(iii)	Failure
    to Perform. Other than as otherwise specified in Section 13(a), if an Obligor defaults in the performance of any of its covenants
    or obligations under any of the Credit Documents and provided that such default is capable of being remedied, and such default is
    not remedied within the Cure Period;
	 	 	 
	 	(iv)	Cross
    Default. Either Obligor (i) fails to make any payment when such payment is due and payable to any Person in relation to any Indebtedness
    having a principal amount in excess of US$250,000 (including any other Convertible Debenture or the Royalty Convertible Debenture),
    and any applicable grace period in relation thereto has expired, or (ii) defaults in the observance or performance of any other agreement
    or condition in relation to any such Indebtedness or contained in any instrument or agreement evidencing, securing or relating thereto,
    or any other event occurs or condition exists, the effect of which default or other condition, if not remedied within any applicable
    grace period, would be to cause, or to permit the holder of such Indebtedness to declare such Indebtedness to become due prior to
    its stated maturity date;

 

    	 

    	-20-

     

	 	(v)	Material
    Permits and Condemnation. Any Governmental Authority directly or indirectly condemns, expropriates, nationalizes, seizes or appropriates
    any material portion of the Property or the Project Assets or any Required Authorization or Other Right necessary for the construction
    and operation of the Project that has been previously obtained by any Obligor is suspended, cancelled, revoked, forfeited, surrendered,
    refused renewal or terminated (whether in whole or in part) or otherwise is not, or ceases to be, in full force and effect at any
    time;
	 	 	 
	 	(vi)	Insolvency.
    If either Obligor fails to pay its debts generally as they fall due or suspends making payments on all or any class of its debts
    or announces an intention to do so or begins negotiations with one or more creditors with a view to rescheduling any of its indebtedness;
	 	 	 
	 	(vii)	Illegality.
    If it becomes unlawful for any Obligor to perform any of its obligations under any of the Transaction Documents or any of its obligations
    under any Credit Document cease to be valid, binding or enforceable or any Obligor repudiates or contests, in whole or in part, any
    obligations under the Credit Documents;
	 	 	 
	 	(viii)	Bankruptcy
    or Similar Proceedings. Upon the occurrence of an Insolvency Event affecting any Obligor or any Subsidiary of Debtor;
	 	 	 
	 	(ix)	Material
    Adverse Effect. If an event or series of events occur which has or with the passage of time or notice or both, would have a Material
    Adverse Effect;
	 	 	 
	 	(x)	Loss
    of Perfected Lien. If any of the Liens created under the Security shall cease to be a valid and perfected first priority lien
    on any Collateral thereunder or any Project Assets intended to be Collateral thereunder, subject only to Permitted Liens which rank
    by law in priority;
	 	 	 
	 	(xi)	Surety
    Indemnities. If either Obligor fails to make any payment as and when due and payable and owing to the Sureties or defaults in
    the observance or performance of any other agreement or condition in any Indemnity or any other agreement with a Surety.
	 	 	 
	 	(xii)	Judgment.
    If one or more final judgments or decrees for the payment of (A) in the case of any judgment or decree in respect of obligations
    or other arrangements with Debentureholder or any of its Affiliates (including funds managed by any of its Affiliates), any money,
    or (B) in any other case, money in excess of US$500,000 in the aggregate for all such cases and no more than US$250,000 in any one
    year period, shall have been obtained or entered against an Obligor or any of its Subsidiaries provided such judgments or decrees
    shall not have been and remain vacated, discharged or stayed pending appeal within the applicable appeal period; or
	 	 	 
	 	(xiii)	Authorizations.
    If any Authorization by a Governmental Authority necessary for the performance of any obligation of an Obligor or any Subsidiary
    of Debtor under any Credit Document ceases to be in full force and effect.

 

    	 

    	-21-

     

	 	(b)	Upon
    the occurrence of an Event of Default under Section 13(a)(viii), the Obligations shall automatically and immediately become due and
    payable and upon the occurrence and during the continuance of any other Event of Default, Debentureholder may, by notice given to
    Debtor, declare all or part of Obligations to be due and payable either on demand or to be immediately due and payable without demand,
    in each case, all without presentment, protest or further notice of any kind, all of which are hereby expressly waived by the Obligors.
    The Obligations due and payable upon a declaration or automatic acceleration pursuant to this Section 13(b) will include the Prepayment
    Interest Premium. Each Obligor acknowledges and agrees that any such prepayment prior to the Maturity Date is subject to the Prepayment
    Interest Premium and that such amount represents a reasonable estimate of fair compensation payable to Debentureholder for the losses
    suffered by early prepayment and such amount is in the nature of liquidated damages and not a penalty. 
	 	 	 
	 	(c)	Upon
    any such declaration or automatic acceleration pursuant to Section 13(b), Debentureholder may, in its discretion, exercise any right
    or recourse and proceed by any action, suit, remedy or proceeding against the Obligors authorized or permitted by law for the recovery
    of the Obligations including bringing an action or instituting proceedings for damages or specific performance.
	 	 	 
	 	(d)	Upon
    the occurrence and during the continuance of an Event of Default, the Security Agent shall at the request of, or may with the consent
    of, the Majority Creditors (as defined in the Security Sharing Agreement) realize upon the Collateral and enforce the rights of the
    Security Agent and the Sprott Entities under the Security.
	 	 	 
	 	(e)	The
    rights and remedies of Debentureholder and the Security Agent hereunder and under the Security are cumulative and are in addition
    to and not in substitution for any other rights or remedies available at law or in equity or otherwise. No single or partial exercise
    by Debentureholder or the Security Agent of any right or remedy precludes or otherwise affects the exercise of any other right or
    remedy to which Debentureholder or the Security Agent may be entitled.
	 	 	 
	 	(f)	No
    failure on the part of Debentureholder or the Security Agent to exercise and no delay in exercising, and no course of dealing with
    respect to, any right, power or privilege under any Credit Document shall operate as a waiver thereof nor shall any single or partial
    exercise of any right, power or privilege under any Credit Document preclude any other or further exercise thereof or the exercise
    of any other right, power, or privilege. The remedies provided herein are cumulative and not exclusive of any remedies provided by
    law. Any waiver by Debentureholder of the strict compliance with any term any Credit Document will not be deemed to be a waiver of
    any subsequent Event of Default.

 

		14.	DEFINITIONS
    AND INTERPRETATION

 

	 	(a)	Definitions.
    For the purposes of this Debenture and Exhibit “D”, capitalized words and phrases shall have the meanings
    set forth in Exhibit “A”.

 

    	 

    	-22-

     

	 	(b)	Accounting
    Principles. Where the character or amount of any asset or liability or item of revenue or expense is required to be determined,
    or any consolidation or other accounting computation is required to be made, for the purpose of the Credit Documents, such determination
    or calculation will, to the extent applicable and except as otherwise specified herein or as otherwise agreed in writing by the parties,
    be made in accordance with US GAAP.
	 	 	 
	 	(c)	Terms
    Generally. Words importing the singular number include the plural and vice versa. Whenever the context may require, any pronoun
    shall include the corresponding masculine, feminine and neuter forms. All forms of “include” shall be deemed to be followed
    by the phrase “without limitation”. The word “will” shall have the same meaning and effect as “shall”.
    Unless the context requires otherwise (i) reference to any agreement or other document herein shall be construed as referring to
    such agreement or other document as from time to time amended (subject to any restrictions on such amendment set forth herein); (ii)
    reference to any Person shall be construed to include such Person’s successors and assigns; (iii) “herein”, “hereof”
    and “hereunder”, and similar words shall be construed to refer to this Debenture in its entirety and not to any particular
    provision hereof; and (iv) all references to sections, schedules and exhibits shall be construed to refer to sections of, schedules
    to and exhibits to this Debenture, and all such schedules and exhibits shall form part of this Debenture. The terms “conversion”,
    “convert”, “convertible” used in this Debenture and the Exhibits hereto shall be interpreted and deemed to
    mean with respect to the conversion of interest into Common Shares, the payment of accrued and unpaid interest owing hereunder through
    the issuance of Common Shares, and (y) with respect to the conversion of the outstanding Principal Amount into Common Shares, the
    election by Debentureholder to receive payment of the Principal Amount through the issuance of Common Shares.
	 	 	 
	 	(d)	Security.
    It is hereby acknowledged and agreed that the Debentureholder is a Sprott Entity and that this Debenture has the benefit of all security
    delivered by the Obligors, or any one of them, in favour of the Security Agent or any other Sprott Entity as security for the PF
    Obligations, including the Mortgage, the Security Agreement and the Securities Pledge Agreement.

 

		15.	NOTICE

 

Any
notice or written communication given pursuant to or in connection with this Debenture shall be in writing and shall be given by delivering
the same personally or by prepaid courier, prepaid registered mail, or email, addressed to the party to be notified at the following
address of such party or at such other address of which such party has given notice to the other party hereto:

 

for
an Obligor,

 

Bunker
Hill Mining Corp.

82
Richmond St East

Toronto,
ON, M5C 1P1

 

	 	Attention:

    Email:
	David
    Wiens, CFO & Corporate Secretary
 david.wiens@bunkerhillmining.com

 

for
Debentureholder,

 

[●]

 

Attention:
[●]

Email:
[●]

 

Any
such notice shall be conclusively deemed to have been given and received on the day of actual receipt by the addressee or, if given by
prepaid registered or certified mail, on the fifth day following the mailing date (absent a general disruption in postal service). A
Party may change its address by notice given in accordance with this Section to the other Parties.

 

    	 

    	-23-

     

		16.	CONFIDENTIALITY

 

	 	(a)	Subject
    to Section 16(b), neither Debentureholder nor the Obligors shall, without the express written consent of the other (which consent
    shall not be unreasonably withheld), disclose any non-public information in respect of the terms of the Credit Documents or otherwise
    received under or in conjunction with the Credit Documents, and none of Debentureholder and the Obligors shall issue any press releases
    concerning the terms of any Credit Document without the consent of the other after such parties having first reviewed the terms of
    such press release.
	 	 	 
	 	(b)	Notwithstanding
    the foregoing, Debentureholder and the Obligors may disclose non-public information in respect of the terms of the Credit Documents
    or otherwise received under or in conjunction with the Credit Documents in the following circumstances:

 

	 	(i)	to
    

 

(A)
its limited partners, investors, auditor, legal counsel, lenders, underwriters, investment bankers and technical consultants, and

 

(B)
Persons with which it is considering or intends to enter into a transaction which would be permitted hereunder without the consent of
the other party under this Debenture (such Persons referred to in this Debenture, the “Proposed Transferees”) for
which such non-public information would reasonably be relevant (and to advisors and representatives of any such Person),

 

provided
that such disclosure is made on a need to know basis and that such Persons are advised of the confidential nature of the non-public information,
undertake to maintain the confidentiality of it and are strictly limited in their use of the non-public information to those purposes
necessary for such Persons to perform the services for which they were, or are proposed to be, retained or to consider or effect the
applicable transaction, or to monitor their investments in the case of limited partners or investors, as applicable;

 

	 	(ii)	where
    disclosure is necessary to comply with Applicable Laws, court order or regulatory request, provided that (x) such disclosure is limited
    to only that non-public information so required to be disclosed, and (y) the party required to disclose such information shall promptly
    notify the other party in writing to permit the other party, at its own expense,to have an opportunity to contest or seek to obtain
    an injunction or protective order or other remedy restricting the disclosure of such non-public information and, where applicable,
    that the party required to disclose such information has taken commercially reasonable efforts to avail itself of the full benefits
    of any laws, rules, regulations or contractual rights as to disclosure on a confidential basis to which it may be entitled;

 

    	 

    	-24-

     

	 	(iii)	for
    the purposes of the preparation and conduct of any court proceeding commenced under Section 20(b);
	 	 	 
	 	(iv)	where
    disclosure is required under Applicable Laws in connection with any initial public offering or subsequent public offering of securities
    of any Obligor or of Debentureholder or any Affiliate thereof;
	 	 	 
	 	(v)	with
    the express written consent of the other party, such approval not to be unreasonably withheld, conditioned or delayed; and
	 	 	 
	 	(vi)	to
    its Affiliates and those of its and its Affiliates’ directors, officers, employees, advisors and representatives who need to
    have knowledge of the non-public information and each such Person to whom the non-public information is disclosed is directed to
    comply with these terms of confidentiality (or is bound by professional obligations to maintain confidentiality).

 

	(c)
    	Each
    party shall ensure that its Affiliates who receive any non-public information pursuant to this Debenture and its and such Affiliates’
    employees, directors, officers, advisors and representatives and those Persons listed in Section 16(b)(i)) are made aware of this
    Section 16 and comply with the provisions of this Section 16. Each party shall be liable to the other party for any improper use
    or disclosure of such terms or information by such Persons.
	 	 
	(d)	For
    the purposes of this Section 16, the Obligors are one party and Debentureholder is the other party.

 

		17.	EXPENSES

 

The
Obligors will reimburse Debentureholder within thirty (30) days of Debentureholder providing a written invoice and supporting documentation
in respect thereof, all of Debentureholder’s reasonable out-of-pocket costs and expenses incurred in respect of the negotiation,
registration, enforcement of, or the preservation of rights under the Credit Documents, including the reasonable fees and expenses of
legal counsel for Debentureholder in connection therewith.

 

		18.	INDEMNIFICATION

 

Each
Obligor hereby indemnifies Debentureholder, its affiliates and their respective directors, officers and employees, from and against,
any claim, damage, loss, liability, judgment, suit, cost or expense of any kind (including reasonable fees and expenses of counsel),
arising directly out of:

 

	 	(a)	any
    breach by an Obligor of any representation, warranty or covenant contained herein; and
	 	 	 
	 	(b)	the
    enforcement by Debentureholder of any right or remedy hereunder.

 

		19.	SUCCESSORS
    AND ASSIGNS, WAIVER AND ACKNOWLEDGEMENT

 

	 	(a)	Neither
    Obligor may transfer, assign or convey any of its obligations under the Credit Documents to any Person without the prior written
    consent of Debentureholder. Debentureholder may transfer, assign or convey the Credit Documents or any of its rights or obligations
    thereunder, in whole or in part, without the consent of the Obligors.

 

    	 

    	-25-

    

 

	 	(b)	This
    Debenture shall be binding upon each Obligor and its successors and permitted assigns and shall enure to the benefit of Debentureholder
    and its successors and assigns. Any reference herein to Debentureholder shall include its successors and assigns as if specifically
    named. This Debenture is a negotiable instrument. Presentment for payment, demand, protest, notice of protest, notice of dishonour
    and statutory days of grace respecting this Debenture are hereby waived.

 

		20.	GOVERNING
    LAW AND JURISDICTION

 

	 	(a)	This
    Debenture shall be governed by, and construed in accordance with, the laws of the Province of Ontario and the federal laws of Canada
    applicable therein (other than the conflict of laws rules).
	 	 	 
	 	(b)	Each
    Obligor agrees that any legal proceeding with respect to this Debenture or to enforce any judgment obtained against the Obligor may
    be brought by Debentureholder in the courts of the Province of Ontario, Canada or in the courts of any jurisdiction where an Obligor
    may have assets or carries on business, and each Obligor hereby irrevocably submits to the non-exclusive jurisdiction of each such
    court and acknowledges its competence. Each Obligor agrees that a final judgment against it in any such legal proceeding will be
    conclusive and may be enforced in any other jurisdiction by suit on the judgment (a certified or exemplified copy of which judgment
    will be conclusive evidence of the fact and of the amount of the Obligations hereunder) or by such other means provided by law.

 

		21.	SEVERABILITY
    OF PROVISIONS

 

Any
provision of this Debenture that is prohibited or unenforceable in any jurisdiction shall, as to that jurisdiction, be ineffective to
the extent of that prohibition or unenforceability without invalidating the remaining provisions hereof or affecting the validity or
enforceability of that provision in any other jurisdiction.

 

		22.	ENTIRE
    AGREEMENT

 

The
Credit Documents constitute the entire agreement between the parties hereto with respect to the subject matter hereof and supersede any
and all prior agreements or understandings, written or oral, with respect thereto.

 

		23.	SURVIVAL

 

The
provisions of Sections 6 (Taxes), 16 (Confidentiality), 17 (Expenses), 18 (Indemnification) and 20 (Governing
Law), shall in each case survive any termination of this Debenture and the payment in full of the Obligations.

 

    	 

    	-26-

     

		24.	JUDGEMENT
    CURRENCY

 

	 	(a)	If,
    for the purpose of obtaining or enforcing judgment against the Obligors in any court in any jurisdiction, it becomes necessary to
    convert into a particular currency (such currency being hereinafter in this Section 24 referred to as the “Judgment Currency”)
    an amount due in another currency (such other currency being hereinafter in this Section 24 referred to as the “Indebtedness
    Currency”) under this agreement, the conversion shall be made at the rate of exchange prevailing on the Business Day immediately
    preceding:

 

	 	(i)	the
    date of actual payment of the amount due, in the case of any proceeding in the courts of the Province of Ontario or in the courts
    of any other jurisdiction that will give effect to such conversion being made on such date; or
	 	 	 
	 	(ii)	the
    date on which the judgment is given, in the case of any proceeding in the courts of any other jurisdiction (the date as of which
    such conversion is made pursuant to this Section 24(a)(ii) being hereinafter in this Section 0 referred to as the “Judgment
    Conversion Date”).

 

	 	(b)	If,
    in the case of any proceeding in the court of any jurisdiction referred to in Section 24(a)(ii), there is a change in the rate of
    exchange prevailing between the Judgment Conversion Date and the date of actual payment of the amount due, the Obligors shall pay
    to Debentureholder such additional amount (if any, but in any event not a lesser amount) as may be necessary to ensure that the amount
    paid in the Judgment Currency, when converted at the rate of exchange prevailing on the date of payment, will produce the amount
    of the Indebtedness Currency which could have been purchased with the amount of Judgment Currency stipulated in the judgment or judicial
    order at the rate of exchange prevailing on the Judgment Conversion Date.
	 	 	 
	 	(c)	Any
    amount due from the Obligors under the provisions of Section 24(b) shall be due to Debentureholder as a separate debt and shall not
    be affected by judgment being obtained for any other amounts due under or in respect of this Debenture.
	 	 	 
	 	(d)	The
    term “rate of exchange” in this Section 24 means the noon spot rate of exchange for Canadian interbank transactions
    applied in converting the Indebtedness Currency into the Judgment Currency published by the Bank of Canada for the day in question.

 

		25.	CURRENCY
    CONVERSIONS

 

Except
as otherwise provided in this Debenture, to the extent that it may be necessary to convert Canadian dollars to US dollars for the purpose
of making any payment or calculation in this Debenture, such conversion shall be made at the Bank of Canada daily average rate quoted
for the exchange of Canadian dollars into US dollars or vice versa, on the Business Day prior to the date the conversion is to take place.

 

		26.	TIME

 

Time
is and will be of the essence of each and every provision of this Debenture.

 

		27.	COUNTERPARTS

 

This
Debenture and any schedules, certificates or other writing delivered in connection herewith, may be executed in any number of counterparts
and by facsimile or electronic means, with the same effect as if all parties had all signed the same document, and all such counterparts
and adopting instruments will be construed together and will constitute one and the same instrument. The execution of this Agreement
and any other writing by any party hereto or thereto will not become effective until counterparts hereof or thereof, as the case may
be, have been executed by all the parties hereto or thereto.

 

[Signature
pages immediately follow]

 

    	 

    	-27-

     

IN
WITNESS WHEREOF each Obligor and Debentureholder has executed this Debenture under the hands of its duly authorized officers in that
behalf.

 

	 	bunker
    hill mining corp.
	 	 
	 	Per:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	Per:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	SILVER
    VALLEY METALS corp.
	 	 
	 	Per:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	Per:	 
	 	Name:	 
	 	Title:	 

 

    	 

     

     

The
undersigned agrees to be bound by Debentureholder’s covenants contained herein.

 

	 	[●]	 
	 	 	 
	 	Per:	 
	 	Name:	[●]
	 	Title:	[●]

 

The
undersigned agrees to be bound by the covenants of the Administrative Agent and the Security Agent contained herein.

 

	 	[●]	 
	 	 	 
	 	Per:	 
	 	Name:	[●]
	 	Title:	[●]

 

    	 

    	A-1

     

EXHIBIT
“A”

DEFINITIONS

 

	 	(a)	“Administrative
    Agent” means Sprott Private Resource Streaming and Royalty (Collector), LP, an Ontario limited partnership, in its capacity
    as agent for Debentureholder hereunder, and any successor agent appointed from time to time by Debentureholder and their successors
    and permitted assigns.
	 	 	 
	 	(b)	“Affiliate”
    means any person which, directly or indirectly, controls, is controlled by or is under common control with another person; and, for
    the purposes of this definition, “control” (including, with correlative meanings, the terms “controlled by”
    or “under common control with”) means the power to direct or cause the direction of the management and policies of any
    person, whether through the ownership of shares or by contract or otherwise, provided that, for the purposes of this Debenture,
    a Debentureholder shall not be deemed an Affiliate of any Obligor.
	 	 	 
	 	(c)	“Anti-Bribery
    Laws” has the meaning ascribed thereto in Exhibit “D”.
	 	 	 
	 	(d)	“Anti-Money
    Laundering Laws” has the meaning ascribed thereto in Exhibit “D”. 
	 	 	 
	 	(e)	“Applicable
    Law” means any federal, provincial, state, local or municipal statute, law (including the common law), ordinance, rule
    having the force of law, regulation, by-law (zoning or otherwise) or order of any Governmental Authority or rule of any stock exchange
    or securities commission, applicable to a Person or any of its properties, assets, business or operations.
	 	 	 
	 	(f)	“Applicable
    Securities Legislation” means all applicable securities laws of each of the jurisdictions in which Debtor is a “reporting
    issuer” and the respective rules and regulations under such laws together with applicable published fee schedules, prescribed
    forms, policy statements, national or multilateral instruments, orders, blanket rulings and other applicable regulatory instruments
    of the securities regulatory authorities in any of such jurisdictions.
	 	 	 
	 	(g)	“Authorization”
    means any consent, registration, filing, agreement, certificate, license, approval, permit, authority or exemption from, by or with
    any Governmental Authority and all corporate, creditors’ and shareholders’ approvals or consents.
	 	 	 
	 	(h)	“Books
    and Records” means all records (whether or not recorded on computer or computer related media) in the possession or control
    of an Obligor relating in whole or in part to the business of an Obligor, including any business, financial, accounting or Tax records.
	 	 	 
	 	(i)	“Business
    Day” means any day, other than a Saturday, a Sunday, a statutory holiday or any day on which major banks are closed for
    business in Kellogg, Idaho or Toronto, Ontario.
	 	 	 
	 	(j)	“Capital
    Reorganization” has the meaning ascribed thereto in Section 10.6(b).
	 	 	 
	 	(k)	“CD
    Holders” means, collectively, Sprott Private Resource Streaming and Royalty (US), LP, Sprott Private Resource Streaming
    and Royalty (International), LP, Sprott Private Resource Streaming and Royalty (Canada), LP, SAF Real Estate, LLC, Ninepoint Alternative
    Credit Opportunities Fund and Ninepoint Credit Income Opportunities Fund, any assignee or transferee of their rights and obligations
    as holder under the relevant Convertible Debenture and their respective successors and assigns from time to time.

 

    	 

    	A-2

     

	 	(l)	“Cdn.$”
    means the lawful currency of Canada.
	 	 	 
	 	(m)	“Claim”
    means any act, omission or state of facts and any complaint, litigation, demand, action, suit, proceeding, claim, assessment, judgement
    or settlement or compromise relating thereto.
	 	 	 
	 	(n)	“Collateral”
    means all property and assets (whether real, personal or other and including Equity Securities) of the Obligors in which charges,
    mortgages or security interests are granted or purported to be granted pursuant to the Security.
	 	 	 
	 	(o)	“Common
    Shares” has the meaning ascribed thereto in Section 10.1(a).
	 	 	 
	 	(p)	“Control”
    means the right, directly or indirectly, to direct or cause the direction of the management of the business or affairs of a Person,
    whether by ownership of securities, by contract or otherwise; and “Controls”, “Controlling”,
    “Controlled by” and “under common Control with” have corresponding meanings.
	 	 	 
	 	(q)	“Convertible
    Debentures” means, collectively, the secured convertible debentures in the initial aggregate principal amount of US$6,000,000,
    including this Debenture, that bear interest at 7.5% per annum payable quarterly in arrears, issued by the Obligors to the CD Holders
    (including Debentureholder) and convertible at the option of the holder into Common Shares, as each such debenture may be amended,
    restated, supplemented or modified from time to time.
	 	 	 
	 	(r)	“Credit
    Documents” means collectively, this Debenture, the Guarantee, the Security and any documents entered into in respect of
    any of the foregoing and “Credit Document” means each of them.
	 	 	 
	 	(s)	“CSE”
    means the Canadian Securities Exchange.
	 	 	 
	 	(t)	“Cure
    Period” means a period of 15 Business Days following the earlier of (i) delivery by Debentureholder to the Obligors of
    written notice of a breach or default, and (ii) an Obligor becoming aware of such breach or default
	 	 	 
	 	(u)	“Debenture”
    has the meaning ascribed thereto in the first paragraph of this document.
	 	 	 
	 	(v)	“Debentureholder”
    has the meaning ascribed thereto in the first paragraph of this Debenture.
	 	 	 
	 	(w)	“Debentureholder
    Conversion Date” has the meaning ascribed thereto in Section 10.4(e).
	 	 	 
	 	(x)	“Debentureholder
    Conversion Form” has the meaning ascribed thereto in Section 10.4(a).
	 	 	 
	 	(y)	“Debentureholder
    Conversion Price” means the US Dollar Equivalent Amount of Cdn.$0.30 per Common Share, as such price per Common Share may
    be adjusted from time to time in accordance with this Debenture.
	 	 	 
	 	(z)	“Debtor”
    has the meaning ascribed thereto in the first paragraph of this Debenture.

 

    	 

    	A-3

     

	 	(aa)	“Debtor
    Interest Conversion Date” has the meaning ascribed thereto in Section 10.2(b).
	 	 	 
	 	(bb)	“Debtor
    Interest Conversion Form” has the meaning ascribed thereto in Section 10.2(a).
	 	 	 
	 	(cc)	“Debtor
    Interest Conversion Price” means the greater of the US Dollar Equivalent Amount of (a) 90% of the 10-day volume weighted
    average trading price in Canadian dollars of the Common Shares of Debtor on the Stock Exchange, ending as of the second Business
    Day prior to the Debtor Interest Conversion Date; and (b) the minimum price permitted by the Stock Exchange.
	 	 	 
	 	(dd)	“Debtor
    Relief Laws” shall mean Title 11 of the United States Code entitled “Bankruptcy”, the Bankruptcy
    and Insolvency Act (Canada), the Companies’ Creditors Arrangement Act (Canada) and the Winding-Up and Restructuring
    Act (Canada), and all other liquidation, administration, conservatorship, bankruptcy, assignment for the benefit of creditors,
    moratorium, rearrangement, receivership, insolvency, reorganization, judicial management or similar debtor relief laws of the United
    States, Canada or other applicable jurisdictions from time to time in effect including any proceeding under corporate law or other
    law of any jurisdiction whereby a corporation seeks a stay or a compromise of the claims of its creditors against it, each as now
    and hereafter in effect, any successors to such statutes and any other applicable insolvency or other similar law of any jurisdiction.
	 	 	 
	 	(ee)	“Disclosure
    Letter” means the letter of disclosure (including the schedules thereto) dated on the date hereof, executed by the Obligors
    and delivered to Debentureholder concurrently with this Debenture.
	 	 	 
	 	(ff)	“Disposition”
    means, with respect to any asset (including any Property) of any Person, any direct or indirect sale, lease (where such Person
    is the lessor), assignment, cession, transfer, exchange, conveyance, release or gift of such asset, including by means of a sale
    and leaseback transaction, or any reorganization, consolidation, amalgamation or merger of such Person pursuant to which such asset
    becomes the property of any other Person; and “Dispose” and “Disposed” have meanings correlative
    thereto.
	 	 	 
	 	(gg)	“Effective
    Date” means the date of this Debenture.
	 	 	 
	 	(hh)	“EPA”
    has the meaning attributed thereto in Section 2(b).
	 	 	 
	 	(ii)	“EPA
    Settlement Agreement” means the Consent Decree between the United States of America and Placer Mining Company, Inc., filed
    with the United States District Court District of Idaho on March 3, 2018 and approved on June 19, 2018 and the Settlement Agreement
    And Order On Consent For Response Action By Bunker Hill Mining Corp. between the EPA and Bunker Hill Mining Corp,, dated as effective
    May 15, 2018 (EPA Region 10 CERCLA Docket No. 10-2017-0123), as amended by the First Amendment To The Settlement Agreement And Order
    On Consent For Response Action By Bunker Hill Mining Corp. between the EPA and Bunker Hill Mining Corp,, dated as effective December
    19, 2021, and any other amendments thereto.
	 	 	 
	 	(jj)	“Equity
    Securities” means, with respect to any Person, any and all shares, interests, participations, rights in, or other equivalents
    (however designated and whether voting and non-voting) of, such Person’s capital, whether outstanding on the date hereof or
    issued after the date hereof, including any interest in a partnership, limited partnership or other similar Person and any beneficial
    interest in a trust, and any and all rights, warrants, options or other rights exchangeable for or convertible into any of the foregoing.

 

    	 

    	A-4

     

	 	(kk)	“Event
    of Default” has the meaning ascribed thereto in Section 13.
	 	 	 	 	 
	 	(ll)	“Excluded
    Taxes” means, with respect to Debentureholder, income or franchise Taxes imposed on (or measured by) its taxable income
    or capital Taxes imposed on (or measured by) its taxable capital, in each case by Canada, or by the jurisdiction under the Applicable
    Law of which such recipient is organized or in which its principal lending office is located.
	 	 	 	 	 
	 	(mm)	“Exclusivity
    Agreement” means the exclusivity agreement dated as of January 7, 2022 between Sprott Private Resource Streaming and Royalty
    (Collector), LP and the Obligors, as amended by the Omnibus Amendment and as the same may be further amended, amended and restated,
    modified, supplemented or replaced from time to time.
	 	 	 	 	 
	 	(nn)	“Funded
    Debt” means:

 

	 	 	(i)	all
    obligations of such Person for borrowed money and all obligations of such Person evidenced by bonds, debentures, notes, bills or
    other similar instruments;
	 	 	 	 	 
	 	 	(ii)	all
    obligations, contingent or otherwise, relative to the face amount of all letters of credit or letters of guarantee, whether or not
    drawn, and banker’s acceptances issued for such Person’s account;
	 	 	 	 	 
	 	 	(iii)	all
    obligations of such Person under any lease that is required to be classified and accounted for as a capital or financed lease for
    financial accounting purposes or under any synthetic lease, tax retention, operating lease or other lease that, in each case, has
    substantially the same economic effect as a conditional sale, title retention agreement or similar arrangement;
	 	 	 	 	 
	 	 	(iv)	all
    obligations of such Person in respect of the deferred purchase price of property or services (excluding accounts payable incurred
    in the ordinary course of business);
	 	 	 	 	 
	 	 	(v)	all
    indebtedness of another Person secured by (or for which the holder of such obligations has an existing right, contingent or otherwise,
    to be secured by) any Encumbrance, upon or in property owned by such Person, even if such Person has not assumed or become liable
    for the payment of such obligations or such obligations are limited in recourse;
	 	 	 	 	 
	 	 	(vi)	all
    obligations of such Person created or arising under any conditional sale or other title retention agreement with respect to property
    acquired by such Person (even if the rights and remedies of the seller or lender under such agreement in the event of default are
    limited to repossession or sale of such property); and
	 	 	 	 	 
	 	 	(vii)	all
    guarantees, indemnities and other obligations (contingent or otherwise) of such Person in respect of Indebtedness of another Person.
	 	 	 	 	 
	 	(oo)	“Funding
    Date” has the meaning ascribed thereto in Section 2(a).

 

    	 

    	A-5

     

	 	(pp)	“Funding
    Indemnity” means funding indemnity dated January 4, 2022 made by the Obligors in favour of Sprott Private Resource Streaming
    and Royalty (Collector), LP, as the same may be amended, amended and restated, modified, supplemented or replaced from time to time.
	 	 	 
	 	(qq)	“Good
    Practice Standards” means, in relation to mining (including all relevant disciplines pertaining thereto, such as metallurgy,
    processing, engineering, environmental and governance matters, relations with community and indigenous peoples and other social matters),
    those policies, practices, methods and acts engaged in or approved by a Person which, in the conduct of its undertaking, exercises
    that degree of safe and efficient practice, diligence, prudence, and foresight reasonably and ordinarily exercised and most commonly
    accepted by reputable, skilled and experienced operators engaged in the mining industry in the United States. 
	 	 	 
	 	(rr)	“Governmental
    Authority” means any government whether federal, provincial, state or municipal and any governmental agency, governmental
    authority, governmental tribunal, court, governmental commission (including a securities commission) of any kind whatsoever, any
    subdivision, agency, commission, board or authority of any of the foregoing or any quasi-governmental or private body exercising
    any regulatory, expropriation or taxing authority under or for the amount of any of the foregoing or any stock exchange or securities
    commission, having jurisdiction.
	 	 	 
	 	(ss)	“Guarantees”
    and “Guarantee” have the meaning ascribed thereto in Section 8.
	 	 	 
	 	(tt)	“Indebtedness”
    means, with respect to each Obligor, all and any indebtedness of such Obligor, whether absolute or contingent.
	 	 	 
	 	(uu)	“Indemnified
    Taxes” means all Taxes other than Excluded Taxes.
	 	 	 
	 	(vv)	“Indemnities”
    means, collectively, the indemnity agreements made by the Obligors in favour of the Sureties in respect of the surety or performance
    bonds to be provided to the EPA and referred to in paragraph (iv) of the definition of Permitted Indebtedness, and “Indemnity”
    means any one of them. .
	 	 	 
	 	(ww)	“Insolvency
    Event” means, in respect of any Person, any one or more of the following events or circumstances whereby such Person (i)
    becomes insolvent or generally does not or becomes unable to pay its debts or meet its liabilities as the same become due; (ii) admits
    in writing its inability to pay its debts generally or declares any general moratorium on its indebtedness or proposes a compromise
    or arrangement between it and any class of its creditors or makes a general assignment for the benefit of creditors; (iii) institutes
    or has instituted against it any proceeding seeking (x) to adjudicate it as bankrupt or insolvent, (y) liquidation, dissolution,
    winding-up, administration, reorganization, compromise, arrangement, adjustment, protection, moratorium, relief, stay of proceedings
    of creditors generally (or any class of creditors), or composition of it or its debts or any other relief under any Debtor Relief
    Law, or (z) the entry of an order for relief or the appointment of or the taking of possession by, a receiver, receiver-manager,
    administrator, custodian, monitor, trustee or other similar official for the Person or any substantial part of its respective property
    and, in the case of any such proceeding instituted against it (but not instituted by it) either such petition, application or proceeding
    continues undismissed, or unstayed and in effect, for a period of forty-five (45) days after the institution thereof, such Person
    fails to diligently and actively oppose such proceeding, or any of the actions sought in such proceeding (including the entry of
    an order for relief against it or the appointment of a receiver, receiver-manager, administrator, custodian, monitor, trustee or
    other similar official for it or for any substantial part of its properties and assets) occurs, or such Person files an answer admitting
    the material allegations of a petition or motion filed against it in any such proceeding; (iv) takes any action, corporate or otherwise,
    to approve, effect, consent to or authorize any of the actions described in the foregoing paragraphs (i) through (iii) or otherwise
    acts in furtherance thereof or fails to act in a timely and appropriate manner in defense thereof.; or (v) such Person’s working
    capital is negative in its most recent annual financial statements and quarterly financial statements, where working capital is the
    current assets less the current liabilities (both as defined by US GAAP).

 

    	 

    	A-6

     

	 	(xx)	“Legal
    Proceedings” means any action, suit, proceeding, demand, assessment, judgment, litigation, hearing, Claim, grievance, arbitration
    or administrative proceeding or other proceeding or dispute resolution process and includes any appeal, settlement or compromise
    relating then or review and any application for same.
	 	 	 
	 	(yy)	“Lien”
    means, (a) with respect to any asset, any mortgage, deed of trust, lien, pledge, hypothec (whether movable or immovable), hypothecation,
    encumbrance, charge, security interest, adverse claim, defect to title or right of set off in, on or of such asset, (b) the interest
    of a vendor or a lessor under any conditional sale agreement, capital lease, title retention agreement or consignment agreement (or
    any financing lease having substantially the same economic effect as any of the foregoing) relating to any asset, (c) any purchase
    option, call or similar right of a third party with respect to such asset, (d) any netting arrangement, defeasance arrangement or
    reciprocal fee arrangement, and (e) any other arrangement having the effect of providing security.
	 	 	 
	 	(zz)	“Material
    Adverse Effect” means any event, occurrence, change or effect that, when taken individually or together with all other
    events, occurrences, changes or effects:

 

	 	(i)	materially
    limits, restricts or impairs, or is reasonably likely to materially limit, restrict or impair (A) the condition, financial or otherwise,
    earnings, operations, assets, business affairs or business prospects of an Obligor; (B) the ability of an Obligor to perform its
    payment or other obligations under the Transaction Documents; (C) the development or operation of the Project substantially in accordance
    with the mine or development plan then in effect immediately prior to the occurrence of such event, occurrence, change or effect,
    (D) the legality, validity or enforceability of the Credit Documents, or the rights and remedies available to Debentureholder hereunder
    and thereunder;
	 	 	 
	 	(ii)	causes
    or is reasonably likely to cause any significant decrease to expected silver, lead or zinc production from the Property based on
    the mine or development plan then in effect immediately prior to the occurrence of such event, occurrence, change or effect;

 

provided
that (x) changes to commodity prices and (y) events, occurrences, changes or effects affecting operators of mining and processing facilities
in the US similar to those related to the Project generally, which do not have a disproportionate effect on the Obligors, shall not be
a Material Adverse Effect or be taken into account in determining whether there has been or will be a Material Adverse Effect.

 

    	 

    	A-7

     

	 	(aaa)	“Maturity
    Date” has the meaning ascribed thereto in the first paragraph of this Debenture.
	 	 	 
	 	(bbb)	“Mine”
    has the meaning set forth in Section 2(b).
	 	 	 
	 	(ccc)	“Mining
    Rights” means any mining claims, mining leases, mineral claims, mining concessions, mineral concessions, exploration permits
    or licenses, mining licenses, forms of mineral tenure or other rights to Products or to access and work upon lands, such as ownership
    and ancillary rights, surface rights, leasing agreements, lands temporal occupation agreements or otherwise, for the purpose of exploring,
    exploiting or benefiting Products, under the terms of Applicable Laws, whether contractual, statutory or otherwise, or any interest
    therein whether now owned or hereafter acquired. “Mining Rights” includes any amendments, relocations, adjustments, resurvey,
    additional locations, consolidation, derived rights or conversions of, or any renewal, replacement, amendment or other modification
    or extensions of any of the foregoing.
	 	 	 
	 	(ddd)	“Mortgage”
    means the mortgage, assignment of production, assignment of leases and rents, security agreement, financing statement and fixture
    filing dated as of the date hereof between Mine Owner and the Security Agent; as the same may be amended, amended and restated, modified,
    supplemented or replaced from time to time.
	 	 	 
	 	(eee)	“Obligations”
    means all indebtedness, liabilities and other obligations of Obligors to Debentureholder hereunder and under the other Credit Documents.
	 	 	 
	 	(fff)	“Obligors”
    means, collectively, Debtor and Guarantor and “Obligor” means any one of them. 
	 	 	 
	 	(ggg)	“Omnibus
    Amendment” means the omnibus amendment agreement dated as of the date hereof between the Obligors, the Security Agent and
    Sprott Private Resource Streaming and Royalty (Collector), LP, as holder of the Royalty Convertible Debenture and as party to the
    Exclusivity Agreement, the ROFR Agreement and the Funding Indemnity.
	 	 	 
	 	(hhh)	“Other
    Rights” means all licenses, approvals, authorizations, consents, rights (including surface rights, access rights and rights
    of way), privileges, concessions or franchises held by the Obligors or required to be obtained from any Person (other than a Governmental
    Authority), for the construction, development and operation of the Mine, as such construction, development and operation is contemplated
    by the current or then applicable development or mine plan, as the case may be.
	 	 	 
	 	(iii)	“Other
    Taxes” means all present or future stamp or documentary taxes or any other excise or property taxes, charges or similar
    levies arising from any payment made hereunder or under any other Credit Document or from the execution, delivery or enforcement
    of, or otherwise with respect to, this Debenture or any other Credit Document;
	 	 	 
	 	(jjj)	“Pending
    Event of Default” means an event which, but for the requirement for the giving of notice, lapse of time, or both, or but
    for the satisfaction of any other condition subsequent to that event, would constitute an “Event of Default”.
	 	 	 
	 	(kkk)	“Permitted
    Indebtedness” means:

 

	 	(i)	all
    existing Indebtedness (other than Funded Debt) incurred prior to the date hereof in the normal course of business;
	 	 	 
	 	(ii)	all
    Funded Debt set out in Section (14) of the Disclosure Letter;

 

    	 

    	A-8

     

	 	(ii)	all
    Indebtedness of each Obligor to Debentureholder, including but not limited to Indebtedness outstanding under this Debenture;
	 	 	 
	 	(iv)	all
    Indebtedness of each Obligor owing to the EPA under the EPA Settlement Agreement with respect to the Mine;
	 	 	 
	 	(iii)	unsecured
    Indebtedness comprised of amounts owed to trade creditors and accruals in the ordinary course of business, which are either not overdue
    or, if disputed and in that case whether or not overdue, are being contested in good faith by any Obligor by appropriate proceedings
    diligently conducted, and provided always that the failure to pay such Indebtedness would not involve and material risk of loss of
    any material part of its assets;
	 	 	 
	 	(vi)	Indebtedness
    of up to US$15,000,000, of which up to US$10,000,000 may reduce the amount advanced under the Stream and which is otherwise to be
    used solely for the purpose of funding the development and construction of the Project Assets, which Indebtedness may be secured
    or unsecured, may rank pari passu with the PF Obligations, must be provided by lenders and on terms satisfactory to Debentureholder,
    acting reasonably, and, if secured, such security will rank pari passu with the Security and be subject to an intercreditor
    agreement with Debentureholder (or another Sprott Entity, as Security Agent) reflecting such pari passu ranking and otherwise
    in form and substance satisfactory to Debentureholder (or the Security Agent);
	 	 	 
	 	(vii)	Indebtedness
    of up to US$13,000,000, ranking subordinate to the PF Obligations, to be used solely for the purpose of funding cost overruns in
    relation to the development and construction of the Project Assets, which Indebtedness may be secured or unsecured, must be provided
    by lenders and on terms satisfactory to Debentureholder, acting reasonably, and, if secured, the security therefor will be subordinated
    to the Security pursuant to a subordination agreement with Debentureholder (or another Sprott Entity, as Security Agent), in form
    and substance satisfactory to Debentureholder (or the Security Agent);
	 	 	 
	 	(iv)	subject
    to the prior written consent of Debentureholder, such consent not to be unreasonably withheld or delayed, obligations in respect
    of surety or performance bonds required to be provided to the EPA in respect of Financial Assurance (under and as defined in the
    EPA Settlement Agreement) of up to US$17,000,000, which obligations are permitted to be secured by security ranking subordinate to
    the Security and subject to a subordination agreement with Debentureholder (or another Sprott Entity, as Security Agent), in form
    and substance satisfactory to Debentureholder (or the Security Agent); and
	 	 	 
	 	(v)	any
    other Indebtedness consented to by Debentureholder from time to time.

 

	 	(lll)	“Permitted
    Liens” means:

 

	 	(i)	liens
    for taxes, assessments or governmental charges of any Governmental Authority not at the time due or delinquent or, if due or delinquent,
    the validity of which is being contested at the time in good faith by appropriate proceedings, and a reserve has been established
    by the Obligors or the applicable Subsidiary in its Books and Records in accordance with US GAAP;

 

    	 

    	A-9

     

	 	(ii)	deemed
    liens and trusts arising by operation of law in connection with workers’ compensation, employment insurance and other social
    security legislation, in each case, which secure obligations not at the time due or delinquent or, if due or delinquent, the validity
    of which is being contested at the time in good faith by appropriate proceedings, and a reserve has been established by the Obligors
    or the applicable Subsidiary in its Books and Records in accordance with US GAAP;
	 	 	 
	 	(iii)	liens
    under or pursuant to any judgment rendered, or claim filed, against any Obligor or a Subsidiary, which such Obligor or such Subsidiary
    shall be contesting at the time in good faith by appropriate proceedings, and a reserve has been established in its Books and Records
    in accordance with US GAAP;
	 	 	 
	 	(iv)	liens
    and charges incidental to construction or current operations which have not at such time been filed pursuant to law or which relate
    to obligations not due or delinquent or the validity of which are being contested in good faith by appropriate proceedings and as
    to which a reserve has been established by the Obligors in its Books and Records in accordance with US GAAP;
	 	 	 
	 	(v)	easements,
    rights of way, servitudes or other similar rights in land (including, without in any way limiting the generality of the foregoing,
    rights of way and servitudes for railways, sewers, drains, gas and oil and other pipelines, gas and water mains, electric light and
    power and telecommunication, telephone or telegraph or cable television conduits, poles, wires and cables) granted to or reserved
    or taken by other persons which individually or in the aggregate do not materially detract from the value of the land concerned or
    materially impair its use in the operation of the business of an Obligor;
	 	 	 
	 	(vi)	the
    right reserved to or vested in any municipality or governmental or other public authority by the terms of any lease, licence, franchise,
    grant or permit acquired by an Obligor or a Subsidiary or by any statutory provision, to terminate any such lease, licence, franchise,
    grant or permit, or to require annual or other payments as a condition to the continuance thereof;
	 	 	 
	 	(vii)	the
    Lien resulting from the deposit of cash or securities (i) in connection with performance of bids, contracts, leases, tenders or expropriation
    proceedings, or (ii) to secure workers’ compensation, surety or appeal bonds, performance bonds, letters of credit, costs of
    litigation when required by law and public and statutory obligations, or (iii) in connection with the discharge of liens or claims
    incidental to construction and mechanics’, warehouseman’s, carriers’ and other similar liens arising in the ordinary
    course of business;
	 	 	 
	 	(viii)	security
    given by an Obligor or a Subsidiary to a public utility or any municipality or governmental or other public authority when required
    by such utility or municipality or other authority in connection with the operations of the Obligor or such Subsidiary, all in the
    ordinary course of its business;
	 	 	 
	 	(ix)	title
    defects or irregularities which are of a minor nature and in the aggregate will not materially impact the use of the subject property
    for the purpose for which it is held;

 

    	 

    	A-10

     

	 	(x)	applicable
    municipal and other governmental restrictions affecting the use of land or the nature of any structures which may be erected thereon,
    provided such restrictions have been complied with and will not materially impair the use of the subject property for the purpose
    for which it is held;
	 	 	 
	 	(xi)	the
    reservation in any original grants from the Crown of any land or interests therein and statutory exceptions and reservations to title;
	 	 	 
	 	(xii)	any
    operating lease entered into in the ordinary course of business; provided that the same is not a sale-leaseback;
	 	 	 
	 	(xiii)	the
    Security;
	 	 	 
	 	(xiv)	Liens
    in respect of Permitted Indebtedness that is permitted hereunder to be secured;
	 	 	 
	 	(xv)	any
    other Liens of the Obligors as existing on the date hereof as disclosed in Section (29) of the Disclosure Letter;
	 	 	 
	 	(xvi)	all
    other Liens permitted in writing by Debentureholder.

 

	 	(mmm)	“Person”
    shall be broadly interpreted and includes an individual, body corporate, partnership, joint venture, trust, association, unincorporated
    organization, any Governmental Authority or any other entity recognized by law.
	 	 	 
	 	(nnn)	“PF
    Obligations” means, collectively, all indebtedness, liabilities and other obligations, present or future, direct or indirect,
    absolute or contingent, matured or unmatured, at any time or from time to time due or accruing due and owing by or otherwise payable
    by an Obligor to the Sprott Entities, or any of them, under, in connection with or pursuant to the Project Finance Documents (including
    the Obligations and all such indebtedness, liabilities and obligations that accrue after the commencing by or against any Obligor
    of any insolvency or similar proceeding). 
	 	 	 
	 	(ooo)	“Prepayment
    Interest Premium” means, as of the date of prepayment or repayment in accordance with Section 4 or Section 13, as applicable,
    an amount equal to twelve (12) months interest on the Principal Amount calculated in accordance with Section 2(c) less the amount
    of interest received by Debentureholder on the Principal Amount prior to the date of prepayment.
	 	 	 
	 	(ppp)	“Principal
    Amount” has the meaning ascribed thereto in the first paragraph of this Debenture less any payments on account of principal
    or reduction of principal by way of conversion, made from time to time.
	 	 	 
	 	(qqq)	“Products”
    means any and all metals, minerals and products or by-products thereof, of whatever kind and nature and in whatever form or
    state, in, under or upon the surface or subsurface of the Property (including ore, metals, precious metals, base metals, uranium,
    industrial minerals, concentrates, gems, diamonds, commercially valuable rock, aggregate, clays and other minerals that are mined,
    excavated, extracted, recovered or otherwise produced from the Property and any ore, concentrates and other products resulting from
    the milling, processing or other beneficiation of such metals, minerals, products and by-products).

 

    	 

    	A-11

     

	 	(rrr)	“Project”
    means the construction and development of the Mine, including the acquisition of the Mine and the settlement of liabilities owing
    to the EPA, when due.
	 	 	 
	 	(sss)	“Project
    Assets” means, collectively:

 

	 	(i)	the
    Property and all other Real Property;
	 	 	 
	 	(ii)	the
    Products and the Other Rights;
	 	 	 
	 	(iii)	the
    mining, processing, development, production, maintenance, administration, water, electrical and conveyor facilities, railway infrastructure
    and rolling stock, storage facilities, stockpiling facilities, shipping infrastructure, utilities, and related ancillary infrastructure,
    other buildings, structures, improvements, fixtures and other real and personal property, including equipment, re-commissioned, constructed,
    operated or otherwise used by or on behalf of Obligor to extract, beneficiate, market, transport and sell Products derived from the
    Property or to develop, operate or administer the Mine, whether or not located within the physical boundaries of the Property; and
	 	 	 
	 	(iv)	any
    rights (including Authorizations, surface, access and water rights), privileges, concessions or franchises owned, controlled, leased
    or operated by or on behalf of an Obligor at any time and not included within the definition of “Property” which are
    required for the development and construction of the Mine and operation thereof. 

 

	 	(ttt)	“Project
    Finance Documents” means the Convertible Debentures (including this Debenture), the Royalty Convertible Debenture, the
    Exclusivity Agreement, the ROFR Agreement, the Funding Indemnity, the Stream, the Security granted in connection herewith and therewith
    and all other agreements, instruments and documents from time to time (both before and after the date of this Debenture) delivered
    to or in favour of any Sprott Entity in connection with any of the foregoing agreements and includes without limitation any agreement
    designated from time to time by the Obligors and the Security Agent as a “Project Finance Document” for purposes of the
    Security.
	 	 	 
	 	(uuu)	“Project
    Mining Claims” means the Mining Rights described in Exhibit “E”.
	 	 	 
	 	(vvv)	“Property”
    means, collectively:

 

	 	(i)	the
    Project Mining Claims and any other Mining Rights, rights or interests forming part thereof from time to time whether now owned or
    hereafter acquired; and
	 	 	 
	 	(ii)	any
    present or future renewals, extensions, modifications, divisions, substitutions, amalgamations, successions, derivations, severances,
    conversions, demise to lease, renaming or variation of any of the Project Mining Claims, Mining Rights or other rights and interests
    referenced in paragraph (a) of this definition.

 

	 	(www)	“Quarter
    End” means the last day of each of March, June, September and December of each calendar year.
	 	 	 
	 	(xxx)	“Real
    Property” means the Property and all other interests in and rights to property described in Exhibits “A-1”,
    “A-2” and “A-3”to the Mortgage.

 

    	 

    	A-12

     

	 	(yyy)	“Related
    Party” means, with respect to any Obligor, any director, officer, employee, shareholder, partner or Affiliate of any Obligor
    or any other Person not dealing at arm’s length with such Obligor (within the meaning of the Income Tax Act (Canada)).
	 	 	 
	 	(zzz)	“Required
    Authorizations” means any and all Authorizations required to be obtained by any Obligor for the construction, development
    and operation of the Mine, as such construction, development and operation is contemplated by the current or then applicable development
    or mine plan, as the case may be.
	 	 	 
	 	(aaaa)	“Restricted
    Person” means any Person that:

 

	 	(i)	is
    named, identified, described in or on or included in or on any of:

 

	 	(1)	the
    lists maintained by the Office of the Superintendent of Financial Institutions (Canada) with respect to terrorism financing, including
    the lists made under subsection 83.05(1) of the Criminal Code, under the Regulations Implementing the United Nations Resolutions
    on the Suppression of Terrorism and under the United Nations Al-Qaida and Taliban Regulations;
	 	 	 
	 	(2)	the
    Denied Persons List, the Entity List or the Unverified List, compiled by the Bureau of Industry and Security, U.S. Department of
    Commerce;
	 	 	 
	 	(3)	the
    List of Statutorily Debarred Parties compiled by the U.S. Department of State;
	 	 	 
	 	(4)	the
    Specially Designated Nationals Blocked Persons List compiled by the U.S. Office of Foreign Assets Control;
	 	 	 
	 	(5)	the
    annex to, or is otherwise subject to the provisions of, U.S. Executive Order No. 13324; or
	 	 	 
	 	(6)	any
    publicly available lists maintained under Applicable Laws relating to anti-terrorism or anti-money laundering matters;

 

	 	(ii)	is
    subject to:

 

	 	(1)	the
    United Nations Act (Canada), the Special Economic Measures Act (Canada) and the Freezing of Assets of Corrupt Foreign
    Officials Act (Canada);
	 	 	 
	 	(2)	the
    International Emergency Economic Powers Act, 50 U.S.C.; and
	 	 	 
	 	(3)	the
    Trading with the Enemy Act, 50 U.S.C. App. 1.1 et seq.; or any other enabling legislation or executive order relating thereto,
    including the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act
    of 2001, Title III of Pub. L. 107 56; or
	 	 	 
	 	(4)	trade
    restrictions under any Applicable Laws; or

 

	 	(iii)	is
    a Person or entity who is an Affiliate of a Person or entity listed above.

 

    	 

    	A-13

     

	 	(bbbb)	“ROFR
    Agreement” means the ROFR agreement dated as of January 7, 2022 between Sprott Private Resource Streaming and Royalty (Collector),
    LP and the Obligors, as amended by the Omnibus Amendment and as the same may be further amended, amended and restated, modified,
    supplemented or replaced from time to time.
	 	 	 
	 	(cccc)	“Royalty”
    means a gross revenue royalty on all minerals produced and sold from the Project Mining Claims granted by the Obligors to a Sprott
    Entity designated by Debentureholder and to be entered into pursuant to the Royalty Convertible Debenture.
	 	 	 
	 	(dddd)	“Royalty
    Convertible Debenture” means the secured royalty convertible debenture in the principal amount of US$8,000,000 issued by
    the Obligors in favour of Sprott Private Resource Streaming and Royalty (Collector), LP, as amended by the Omnibus Amendment, and
    as the same may be further amended, amended and restated, supplemented or modified from time to time.
	 	 	 
	 	(eeee)	“Securities
    Pledge Agreement” means the pledge agreement dated as of January 7, 2022 made between BHMC and the Security Agent, as amended
    by the Omnibus Amendment and as the same may be further amended, amended and restated, modified, supplemented or replaced from time
    to time.
	 	 	 
	 	(ffff)	“Security”
    means, collectively, (i) any one or more guarantees made from time to time by an Obligor in favour of the Sprott Entities or any
    of them, in respect of any Obligations; and (ii) any one or more assignments, deeds of trust, mortgages, account control agreements,
    pledges and other security agreements, determined by the Security Agent, acting reasonably, pursuant to which an Obligor grants to
    the Security Agent for the benefit of the Sprott Entities mortgages, charges, pledges and/or security interests in all or some of
    its present and after acquired property as security for the PF Obligations, in each case, in form and substance satisfactory to the
    Security Agent acting reasonably.
	 	 	 
	 	(gggg)	“Security
    Agent” means Sprott Private Resource Streaming and Royalty (Collector), LP, an Ontario limited partnership, in its capacity
    as security agent for the benefit of the Sprott Entities under the Security, and any successor agent appointed pursuant to the Security
    Sharing Agreement, and their successors and permitted assigns
	 	 	 
	 	(hhhh)	“Security
    Agreement” means the security agreement dated as of the date hereof and made by the Obligors in favour of the Security
    Agent, as the same may be amended, amended and restated, modified, supplemented or replaced from time to time.
	 	 	 
	 	(iiii)	“Security
    Sharing Agreement” means the security sharing agreement dated as of the date hereof between the Security Agent, the holder
    of the Royalty Convertible Debenture, each CD Holder (including Debentureholder) and other Sprott Entities party thereto from time
    to time, as creditors, and acknowledged and agreed by the Obligors, as amended, restated, supplemented or modified from time to time.
	 	 	 
	 	(jjjj)	“Sprott
    Entities” means, collectively, the Administrative Agent, the Security Agent, the CD Holders, any Affiliate of Sprott Inc.
    and any fund managed or sub-managed by an Affiliate of Sprott Inc. which in each case is party to a Project Finance Document together
    with any successor, assign or transferee thereof that is party from time to time to any Project Finance Document and “Sprott
    Entity” means any one of them.

 

    	 

    	A-14

     

	 	(kkkk)	“Stock
    Exchange” means the CSE or any stock exchanges upon which the Common Shares are listed from time to time.
	 	 	 
	 	(llll)	“Stream”
    means a metals stream agreement to be entered into between the Obligors and a Sprott Entity to be designated by Debentureholder pursuant
    to which an Obligor will agree to sell and the Sprott Entity will agree to purchase an agreed amount of refined metals produced from
    the Project.
	 	 	 
	 	(mmmm)	“Stream
    Advance Date” means the date upon which the initial upfront deposit is paid by a Sprott Entity to an Obligor pursuant to
    the Stream.
	 	 	 
	 	(nnnn)	“Subsidiary”
    means each Person directly or indirectly Controlled by Debtor.
	 	 	 
	 	(oooo)	“Sureties”
    means, collectively, Northbridge General Insurance Corporation, Trisura Guarantee Insurance Company, Trisura Insurance Company and
    any other issuer of surety or performance bonds to be provided to the EPA and referred to in paragraph (iv) of the definition of
    Permitted Indebtedness, and “Surety” means any one of them.
	 	 	 
	 	(pppp)	“Taxes”
    means all present or future taxes, rates, levies, royalties, imposts, duties, deductions, assessments, withholdings, dues, fees and
    other charges of any nature, including any interest, fines, penalties or other liabilities with respect thereto, imposed, levied,
    collected, withheld or assessed by any Governmental Authority (of any jurisdiction), and whether disputed or not, including sales
    or value-added taxes, goods and services taxes, stamp taxes and royalties.
	 	 	 
	 	(qqqq)	“Transaction
    Documents” means the Credit Documents and the Royalty which shall be deemed for the purpose of this definition and the
    context in which this definition is used, to be a valid and enforceable agreement between the Obligors and Debentureholder. 
	 	 	 
	 	(rrrr)	“US
    Dollar Equivalent Amount” means (i) with respect to the calculation of the Debtor Interest Conversion Price, the amount
    obtained in US dollars when the 10-day volume weighted average of the trading price in Canadian dollars referred to in paragraph
    (a) of the definition of “Debtor Interest Conversion Price” is converted into US dollars using the daily average rate
    for the exchange of Canadian dollars into US dollars of the Bank of Canada on the last of such 10 day period; and (ii) with respect
    to the calculation of the Debentureholder Conversion Price, the amount obtained in US dollars when the Debentureholder Conversion
    Price is converted into US dollars using the daily average rate for the exchange of Canadian dollars into US dollars of the Bank
    of Canada on Business Day prior to the date the conversion is to take place.
	 	 	 
	 	(ssss)	“US
    GAAP” means, in relation to any Person at any time, accounting principles generally accepted in the United States applied
    on a basis consistent with the most recent audited financial statements of such Person and, if applicable, its consolidated affiliates
    (except for changes disclosed in the notes to such financial statements).

 

    	 

    	B-1

     

EXHIBIT
“B”

DEBTOR INTEREST CONVERSION FORM

 

	TO:	[●]
  [or assignee]

 

All
terms used herein but not defined shall have the meanings ascribed thereto in the Secured Convertible Debenture dated as of [●],
2022 issued by Silver Valley Metals Corp. and Bunker Hill Mining Corp. to [●] (the “Debenture”).

 

Pursuant
to Section 10.1 of the Debenture, the undersigned, being the Debtor, hereby certifies as follows:

 

	 	(a)	The
    Debtor irrevocably elects to pay the following amount of accrued and unpaid interest of US$_________________ through the issuance
    of _______________ Common Shares in accordance with the terms of the Debenture, at the Debtor Interest Conversion Price;
	 	 	 
	 	(b)	The
    exchange rate used to calculate the number of Common Shares is _______ as per the Debenture. 
	 	 	 
	 	(c)	The
    Debtor Interest Conversion Date is __________________________1. 
	 	 	 
	 	(d)	The
    Common Shares will be entered into the books of Debtor in the name of Debentureholder (or the name of its nominee, participant, assignee
    as directed by Debentureholder prior to the Debtor Interest Conversion Date) and certificates evidencing the Common Shares will be
    registered in the same name.

 

DATED
this _____ day of _________________________, 20__.

 

	 	BUNKER
    HILL MINING CORP.
	 	 	     
	 	By:	 
	 	Name:	 
	 	Title:	 

 

 

 

1
NTD: in the case of a quarterly interest payment, to be the applicable quarter end date and, in any other case, to be the date
such accrued but unpaid interest would otherwise be due and payable.

 

    	 

    	C-1

     

EXHIBIT
“C”

DEBENTUREHOLDER CONVERSION FORM

 

	TO:	Bunker
    Hill Mining Corp. (the “Debtor”)

 

REFERENCE
IS MADE TO the Secured Convertible Debenture dated [●], 2022 issued by Debtor in favour of the undersigned (the “Debentureholder”)
in the original principal amount of US$[●] (the “Debenture”). Capitalized terms used but not defined herein
have the respective meanings ascribed to those terms in the Debenture.

 

THE
UNDERSIGNED, being the registered Debentureholder of the Debenture hereby irrevocably:

 

	 	(a)	elects
    to convert US$____________ being the Principal Amount under the Debenture into Common Shares; and
	 	 	 
	 	(b)	directs
    you to enter the Common Shares into the books of Debtor in the name of __________________________________2 and deliver
    certificates evidencing the Common Shares registered in the same name.

 

DATED
this ____ day of ___________________, 20__.

 

	 	[●]	 
	 	 	 
	 	By:	 
	 	Name:
    	 
	 	Title:	 

 

 

 

2
Insert full name of Debentureholder or its nominee, participant or assignee

 

    	 

    	D-1

     

EXHIBIT
“D”

OBLIGORS’ REPRESENTATIONS AND WARRANTIES

 

[Attached
hereto]

 

    	 

    	D-2

    

 

EXHIBIT
“D”

OBLIGORS’ REPRESENTATIONS AND WARRANTIES

 

Each
of Debtor and Guarantor (each an “Obligor” and collectively, the “Obligors”) hereby represents
and warrants as follows to Debentureholder, and acknowledges and agrees that Debentureholder is relying upon such representations and
warranties in connection with entering into of this Debenture:

 

Capitalized
terms used but not defined herein have the respective meanings ascribed to those terms in the Debenture.

 

Corporate
Organization and Authority 

 

	1.	Each
    Obligor is a corporation duly incorporated and validly existing under the laws of its jurisdiction of incorporation and is up-to-date
    in respect of all filings required by law to maintain its existence; in particular, the Debtor is a corporation incorporated under
    the laws of Nevada and Guarantor is a corporation incorporated under the laws of Idaho. 
	 	 
	2.	Each
    Obligor is qualified to do business and is in good standing in all jurisdictions in which the nature of its business as now being
    or as proposed to be conducted makes such qualification necessary and has all material governmental licenses, authorizations, consents
    and approvals necessary to own its assets and carry on its business as now being or as proposed to be conducted. 
	 	 
	3.	Each
    Obligor has the requisite corporate power, capacity and authority to: (i) own its property and assets and conduct its business; and
    (ii) enter into the Transaction Documents and such other documents as may be necessary or appropriate to give effect to the terms
    thereof to which it is a party, to perform its obligations hereunder and thereunder and complete the transactions contemplated hereby
    and thereby.
	 	 
	4.	The
    execution and delivery of the Debenture and the other Credit Documents by each Obligor thereto and the completion of the transactions
    contemplated hereby and thereby, including the reservation of the Common Shares issuable in accordance with the Debenture, have been
    duly authorized by all necessary corporate action on the part of such Obligor. This Debenture and the other Credit Documents to which
    each Obligor is a party have been duly and validly executed and delivered by such Obligor, and constitutes a legal, valid and binding
    obligation of it, enforceable against it in accordance with the terms thereof, except to the extent enforcement may be affected by
    bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar Applicable Laws affecting creditors’ rights
    generally and subject to the qualification that equitable remedies, injunctive relief and/or specific performance may be granted
    in the discretion of a court of competent jurisdiction. 
	 	 
	5.	Debtor
    owns legally and beneficially all of the issued and outstanding stock of the Guarantor (the “Capital Stock”) as
    set forth in Section (5) of the Disclosure Letter free and clear of any Encumbrances. The corporate structure and organization chart
    of the Obligors set forth in Section (5) of the Disclosure Letter accurately reflects, as of the date hereof, the direct and indirect
    ownership of all of the Capital Stock of the Guarantor. Other than as set forth in Section (5) of the Disclosure Letter, no Person
    has any agreement, option, right of first refusal or right, title or interest or any right (including a right of conversion of Indebtedness)
    that is or will become an agreement, option, right of first refusal or right, title or interest, in or to all or any part of the
    Capital Stock of the Guarantor. There are no shareholders’ agreement or shareholders’ declaration in effect with respect
    to the Obligors or their respective shares or other equity interests. 

 

    	 

    	D-3

     

	6.	Each
    Obligor is entering into and performing its obligations under this Debenture and each of the other Credit Documents to which it is
    a party, on its own account and not as trustee or a nominee of any other Person. 
	 	 
	7.	The
    principal place of business and chief executive office of each Obligor as of the date hereof is set out in Section (7) of the Disclosure
    Letter.
	 	 
	8.	No
    Obligor has suffered an Insolvency Event and no Event of Default has occurred that is continuing and the Obligor are not aware of
    any circumstance which, with notice or the passage of time, or both, would give rise to an Insolvency Event or an Event of Default
    with respect to it. 
	 	 
	9.	Each
    of the Obligors’ corporate records are complete and accurate in all material respects, and true and correct copies of same
    have been made available to the Debentureholder. 
	 	 
	10.	The
    financial books, records and accounts of each of the Obligors: (i) are complete and accurate in all material respects; (ii) are stated
    in reasonable detail; and (iii) accurately and fairly reflect all the material transactions, acquisitions and dispositions of each
    of the Obligors. 
	 	 
	11.	Debtor’s
    audited consolidated financial statements for the six months ended December 31, 2020, including the consolidated balance sheets,
    statements of loss and comprehensive loss, cash flows and changes in shareholders’ deficiency and the notes thereon and the
    unaudited interim consolidated financial statements for the three and nine months ended September 30, 2021 (collectively, the “Current
    Financial Statements”), have been prepared in accordance with US GAAP. The Current Financial Statements fairly present
    in all material respects the financial condition and results of operations of Guarantor and the Debtor, on a consolidated basis,
    as at the respective dates specified therein and for the periods then ended. The Obligors have not effected any material change in
    its accounting methods, principles or practices since the date of the Current Financial Statements. The Obligors do not intend to
    correct or restate, nor, to the knowledge of the Obligors, is there any basis for any correction or restatement of, any aspect of
    the Current Financial Statements. Other than as set out in Section (11) of the Disclosure Letter, each Obligor is neither a party
    to, nor had a commitment to become a party to, any material off balance sheet transactions, arrangements, obligations (including
    contingent obligations) or other relationships of Guarantor, the Debtor or any subsidiary of the Obligors with unconsolidated entities.
    MNP LLP is the current auditor of Debtor and is “independent” of the Obligors within the meaning of the Rules of Professional
    Conduct of the Chartered Professional Accountants of Ontario. There has never been a “reportable event” (within the meaning
    of National Instrument 51-102 – Continuous Disclosure Obligations of the Canadian Securities Administrators (“NI
    51-102”) with the present or any former auditor of the Obligors.
	 	 
	12.	Since
    the end date of its Current Financial Statements, the Obligors:

 

	 	(a)	have
    conducted its business only in the ordinary course of business and no Material Adverse Effect has occurred; and 
	 	 	 
	 	(b)	have
    not incurred any Indebtedness which is not shown or reflected in the most recent interim financial statements provided to the Debentureholder
    or in Section (12) of the Disclosure Letter. 

 

    	 

    	D-4

     

Tax
Matters

 

	13.	(a)
    	Taxes:

 

	 	(i)	All
    material Taxes due and payable by each of the Obligors (whether or not shown due on any Tax returns and whether or not assessed (or
    reassessed) by the appropriate Governmental Authority) have been timely paid. 
	 	 	 
	 	(ii)	All
    Tax returns required by Applicable Law to be filed by or with respect to the Obligors have been properly prepared and timely filed
    and all such Tax returns (including information provided therewith or with respect thereto) are true, complete and correct in all
    material respects, and no material fact or facts have been omitted therefrom which would make any such Tax returns misleading. 

 

	 	(b)	As
    of the date hereof, no audit or other proceeding by any Governmental Authority is pending or, to the knowledge of the Obligors, threatened
    with respect to any Taxes due from or with respect to the Obligors, and no Governmental Authority has given written notice of any
    intention to assert any deficiency or claim for additional Taxes against either of the Obligors. As of the date hereof, there are
    no matters under discussion, audit or appeal or in dispute with any Governmental Authority relating to Taxes. 
	 	 	 
	 	(c)	Other
    than as set out in Section (13) of the Disclosure Letter, no Governmental Authority of a jurisdiction in which the Obligors do not
    file Tax returns has made any written claim that either of the Obligors are or may be subject to taxation by such jurisdiction. To
    the knowledge of the Obligors, there is no basis for a claim that the Obligors is subject to Tax in a jurisdiction in which the Obligors
    do not file Tax returns. As of the date hereof, each of the Obligors only file Tax returns in the jurisdictions in which it is incorporated
    or organized and in any jurisdiction in which it carries on any material business. 
	 	 	 
	 	(d)	As
    of the date hereof, there are no reassessments of Taxes for the Obligors that have been issued and are under dispute, and the Obligors
    have not received any communication from any Governmental Authority that an assessment or reassessment is proposed in respect of
    any Taxes.
	 	 	 
	 	(e)	To
    the knowledge of the Obligors, each of the Obligors have withheld or collected any material Taxes that are required by Applicable
    Law to be withheld or collected and have paid or remitted, on a timely basis, the full amount of any Taxes that have been withheld
    or collected, and are due, to the applicable Governmental Authority. 

 

	14.	Section
    (14) of the Disclosure Letter sets out a full and complete list of all existing Funded Debt of the Obligors.

 

Non-Contravention

 

	15.	Subject
    to Section (15) of the Disclosure Letter, none of the execution and delivery of the Debenture or the other Transaction Documents,
    the reservation and issuance of the Common Shares in accordance with the Debenture or the completion of the transactions contemplated
    hereby or thereby, by each Obligor thereto, will (i) require that a consent be obtained or a notice be provided under or result in
    or constitute a breach or default under any agreement, mortgage, bond or other instrument to which it is a party or which is binding
    on it or its assets, (ii) violate the terms of its constating documents, (iii) require that a consent be obtained or a notice be
    provided under or violate any Applicable Law or any Required Authorization or the material terms and conditions of any Other Rights,
    or result in any modification, revocation, alteration or transfer of any Required Authorization or Other Right, (iv) result in the
    imposition of any Encumbrance on the Project Assets, or (v) contravene any judgment, order, writ, injunction or decree of any Governmental
    Authority.

 

    	 

    	D-5

     

	16.	 No
    Obligor is in breach of or default under, and no event has occurred that, with the passage of time or notice, or both, would constitute
    or would reasonably be expected to constitute such a breach of or default under, any agreement, mortgage, bond or other instrument
    to which it is a party or which is binding on it or its assets, other than a breach or default or event that would not, individually
    or in the aggregate, have a Material Adverse Effect. To the knowledge of the Obligors, there is no breach or default by any counterparty
    thereto or inability of any counterparty thereto to perform its obligations thereunder which has, individually or in the aggregate,
    a Material Adverse Effect. 

 

Regulatory
Compliance 

 

	17.	No
    consents, approvals or permissions are required to be obtained by, nor any filings made with any Governmental Authority by any Obligor
    in connection with the execution and delivery or the performance by it of this Debenture and the other Transaction Documents to which
    it is a party, or in respect of its obligations hereunder or thereunder, other than as set forth in Sections (17) of the Disclosure
    Letter.
	 	 
	18.	Each
    Obligor has conducted and is conducting its respective business in compliance in all material respects with Applicable Laws. 
	 	 
	19.	No
    Obligor nor, to the knowledge of the Obligors, any director, officer, manager, member, employee, consultant, representative or agent
    thereof, acting on its behalf has violated (i) the Corruption of Foreign Public Officials Act (Canada), the Bribery Act
    (United Kingdom), the Foreign Corrupt Practices Act (United States), and all other anti-bribery, and anti-corruption Applicable
    Laws, whether within Canada, the United States or to the extent applicable to any Obligor, elsewhere, including any regulations,
    guidelines or orders thereunder (collectively, the “Anti-Bribery Laws”); and (ii) the Proceeds of Crime (Money
    Laundering) and Terrorist Financing Act (Canada) and all other anti-money laundering, anti-terrorist financing, government sanction
    and “know your client” Applicable Laws, whether within Canada, the United States and, to the extent applicable to any
    Obligor, elsewhere, including any regulations, guidelines or orders thereunder (collectively, the “Anti-Money Laundering
    Laws”). No Obligor nor, to the knowledge of Guarantor and the Debtor, any director, officer, employee, consultant, representative
    or agent thereof acting on its behalf, has made a voluntary, directed, or involuntary disclosure to any Governmental Authority responsible
    for enforcing Anti-Bribery Laws or Anti-Money Laundering Laws, with respect to any alleged non-compliance by any Obligor or such
    other Persons (acting on behalf of an Obligor) with Anti-Bribery Laws or Anti-Money Laundering Laws. No Obligor has received any
    written notice, request, or citation from any Governmental Authority alleging non-compliance by any Obligor or such other Persons
    (acting on behalf of an Obligor) with any Anti-Bribery Laws or Anti-Money Laundering Laws. 
	 	 
	20.	The
    Obligors and their agents have complied at all times with Anti-Bribery Laws with respect to the Project and the development, construction
    or conduct of all operations or activities at the Project. The operations in relation to the Project are and have been conducted
    at all times in compliance with applicable financial record-keeping and reporting requirements of Anti-Money Laundering Laws and
    no action, suit or proceeding by or before any court or Governmental Authority or any arbitrator involving the Obligors with respect
    to the Anti-Money Laundering Laws is pending or, to the best knowledge of the Obligors, threatened. 

 

    	 

    	D-6

     

	21.	The
    Obligors have not, and, to the knowledge of the Obligors, no director, officer, employee, consultant, representative or agent of
    the Obligors have, transacted business on behalf of the Obligors with any Restricted Person. 
	 	 
	22.	Debtor
    is a “reporting issuer” (or the equivalent) in the provinces of British Columbia and Ontario and is not included on a
    list of defaulting reporting issuers maintained by the securities regulators or other securities regulatory authorities in any such
    provinces (collectively, the “Securities Regulators”). No order, ruling or determination having the effect of
    suspending the sale or ceasing or suspending trading in any securities of Debtor has been issued by any Governmental Authority and
    is continuing in effect and no proceedings for such purpose have been instituted or are, to the knowledge of the Obligors, pending
    or threatened. 

 

Legal
Proceedings

 

	23.	Other
    than as set forth in Section (23) of the Disclosure Letter, there are no actions, suits, proceedings, hearings, inquiries, investigations
    or claims commenced or, to the knowledge of the Obligors, threatened against any Obligor or that involve the Project, and which,
    individually or in the aggregate, (i) would prevent or limit, restrict or impair in any material respect the ability of an Obligor
    to enter into this Debenture or the other Transaction Documents to which it is a party or would reasonably be expected to materially
    and adversely impair the performance of its obligations under this Debenture or the other Transaction Documents or the development
    of the Project, or (ii) that could reasonably be expected to result in a Material Adverse Effect. 
	 	 
	24.	No
    Obligor is a party to or subject to any judgment, order, writ, injunction or decree, involving the Project, which (i) could reasonably
    be expected to materially and adversely impair the performance of its obligations under this Debenture or the other Transaction Documents,
    or (ii) could reasonably be expected to result in a Material Adverse Effect. No action or proceeding has been instituted or remains
    pending or, to the knowledge of the Obligors, has been threatened and not resolved, by or before any Governmental Authority that
    (i) could reasonably be expected to materially and adversely impair the development of the Project, or (ii) could reasonably be expected
    to result in a Material Adverse Effect. 

 

Material
Information 

 

	25.	All
    material information relating to the Project and prepared by or on behalf of the current management of the Obligors and that has
    been made available or delivered to Debentureholder, including forecasts, projections, mine plans, budgets and environmental audits,
    assessments, studies and tests, including any environmental and social impact assessment study reports, was prepared in good faith
    and on the basis of assumptions that the management of the Obligors believe to be reasonable at the time of preparation, subject
    to any material changes of which the Obligors have informed Debentureholder in writing. To the knowledge of the management of the
    Obligors, all material information relating to the Project prepared at the request of current management of the Obligors by third
    parties and that has been made available or delivered to Debentureholder including forecasts, projections, mine plans, budgets and
    environmental audits, assessments, studies and tests, including any material environmental and social impact assessment study reports,
    was prepared in good faith and does not contain materially incorrect information. Debtor does not have knowledge of any change to
    the facts and assumptions underlying the estimates in the technical report and preliminary economic assessment for underground milling
    and concentration of lead, silver and zinc at the Mine dated December 29, 2021 effective November 29, 2021 (“PEA”)
    that would reasonably be expected to result in a material adverse change in any cost, price, reserves, resources or other relevant
    information in the PEA. All material information regarding the Project, including drill results, technical reports and studies, that
    are required to be disclosed by Applicable Laws, have been publicly disclosed by Debtor in compliance, in all material respects,
    with Applicable Laws.

 

    	 

    	D-7

     

	26.	As
    of the date hereof, all material information relating to the Project mineralization prepared by or on behalf of the current management
    of the Obligors has been made available or delivered to Debentureholder and, to the knowledge of the management of the Obligors,
    such information and the reports and information delivered to Debentureholder have been prepared in a manner which is consistent
    with Good Practice Standards, the statements, assumptions and projections contained therein are fair and reasonable as and when produced
    and, to the knowledge of the management of the Obligors, have been arrived at after reasonable inquiry having been made in good faith
    by the Persons responsible therefor. The estimated mineral resources relating to the Property as of the date hereof are as stated
    in the PEA. The Obligors are in compliance in all material respects with NI 43-101 in connection with the disclosure of scientific
    or technical information made by the Obligors concerning the Project. The Obligors have duly filed with the applicable regulatory
    authorities in compliance in all material respects with Applicable Laws all reports required by NI 43-101 in connection with the
    Project, and all such reports were prepared in accordance with the requirements of NI 43-101 in all material respects. Except as
    set forth in Section (26) of the Disclosure Letter, as of the date hereof, there are no outstanding unresolved comments of the Canadian
    Securities Exchange (the “CSE”) or any Securities Regulator in respect of the technical disclosure relating to
    the Project made in the documents which have been filed by or on behalf of the Obligors with the relevant Securities Regulators pursuant
    to the requirements of Applicable Laws, including all documents publicly available on Debtor’s SEDAR profile.
	 	 
	27.	The
    Obligors are in compliance in all material respects with all timely and continuous disclosure obligations under Applicable Laws,
    including NI 51-102, and the policies, rules and regulations of the CSE and, without limiting the generality of the foregoing, except
    as disclosed to the Debentureholder, there has been no “material change”, as defined in the Securities Act (Ontario)
    (actual, or, to the knowledge of the Obligors, proposed or prospective, whether financial or otherwise) in the business, results
    of operations, prospects, assets, liabilities (contingent or otherwise) or capital or financial condition of the Obligors on a consolidated
    basis which has not been publicly disclosed within the period required by NI 51-102, and except as disclosed to the Debentureholder,
    the Obligors has not filed any confidential material change reports which remain confidential as of the date hereof.

 

Project

 

	28.	The
    PEA was prepared in a manner which is consistent with Good Practice Standards and the statements, assumptions and projections contained
    therein were fair and reasonable as and when produced and, to the Obligors’ knowledge, were arrived at after reasonable inquiry,
    having been made in good faith by the Persons responsible therefor. The PEA contains a reasonable estimate in all material respects
    of projected capital expenditures for the Real Property subject to fluctuations in exchange rates, commodity prices and electricity
    rates and has been prepared in a manner which is consistent with Good Practice Standards. 
	 	 
	29.	Subject
    to Section (29) of the Disclosure Letter, the Guarantor is the sole recorded and beneficial owner of the Real Property, free and
    clear of any Encumbrances (other than Permitted Liens). Section (29) of the Disclosure Letter sets out a full and complete list of
    all Permitted Liens. Except for any Permitted Liens or as listed in Section (29) of the Disclosure Letter, no Person other than the
    Debentureholder has any agreement to acquire, option, right of first refusal or right, title or interest or any right that is or
    will become an agreement to acquire, option, right of first refusal or right, title or interest, in or to all or any material part
    of the Collateral or any Project Assets nor has either of the Obligors granted, or agreed to grant, any Encumbrances, other than
    Permitted Liens, on the Collateral or any Project Asset.

 

    	 

    	D-8

     

	30.	The
    Required Authorizations and Other Rights required for the development, construction or operation of the Project, including commercial
    production of the silver, lead and zinc from the Project, whether obtained or issued by the date hereof or not, are listed in Section
    (30) of the Disclosure Letter. The Obligors have complied in all material respects with all conditions provided for in the Required
    Authorizations and Other Rights required to be complied with as of the date this representation is made.
	 	 
	31.	Subject
    to Section (31) of the Disclosure Letter, operation of the Project is and has been in compliance in all material respects with all
    land use restrictions, zoning, regulations, ordinances, Environmental Laws and other similar Applicable Laws thereto. Subject to
    Section (31) of the Disclosure Letter, during the past three (3) years, neither of the Obligors nor any of its agents or employees
    has received any written notice from any Governmental Authority having jurisdiction over the Project alleging any violation of any
    Applicable Law, including, but not limited to, those relating to Environmental Laws, zoning, building, use, personal disability and
    fire or safety, which has not been cured or remedied. To the knowledge of the Obligors, there are not any threatened proceedings
    for the rezoning of the Real Property or any portion thereof.
	 	 
	32.	Current
    management of the Obligors has arranged for the following environmental studies relating to the Project and the Real Property: (i)
    since September 2020, 30 site water sampling and broad spectrum lab testing on a monthly basis and field parameter testing on a bi-weekly
    basis, and (ii) in May 2021, a multi-year water flow analysis program with the University of Idaho’s hydrogeology department,
    (iii) water chemistry analysis as part of planning for a proprietary in-mine water treatment system, (iv) evaluation of the capabilities
    of the Environmental Protection Agency’s Central Treatment Plant, in the event that an Obligor may seek to purchase and/or
    operate it in the future. No other environmental investigation, study, audit, test or other analysis has been conducted by or at
    the request of current management of the Obligors with respect to the Project and Real Property.
	 	 
	33.	Subject
    to Section (33) of the Disclosure Letter, there are no material environmental liabilities of the Obligors or to the knowledge of
    the Obligors, in respect of the development, construction and operation of the Project, in each case, that have been incurred as
    at the date that this representation is made.
	 	 
	34.	Subject
    to Section (34) of the Disclosure Letter, no release or threatened release of any chemicals, materials or substances, whether solid,
    liquid or gas, defined as or included in the definition of “contaminant”, “pollutant”, “hazardous substance”,
    “hazardous waste”, “hazardous material”, or “toxic substance” under any applicable Environmental
    Law has occurred or is occurring at or from the Project for which Environmental Laws require notice, further investigation or any
    form of responsive action.
	 	 
	35.	To
    the knowledge of the Obligors, Section (35) of the Disclosure Letter lists all underground and above ground storage tanks located
    or previously located on the Real Property.
	 	 
	36.	The
    Obligors have complied and will comply with all terms and conditions of the EPA Settlement Agreement, including, without limitation,
    making timely payments and providing financial assurance on schedule.

 

    	 

    	D-9

     

	37.	The
    Property comprises all mining claims, concessions and other mining rights forming part of the Project.
	 	 
	38.	Guarantor
    has good and marketable title to the Real Property free and clear of any Liens other than Permitted Liens and its rights in and to
    the Real Property will be valid and in full force and effect in all material respects, and the Obligors will have complied in all
    material respects with all of their respective obligations in respect thereof, including payment of any annual fees and production
    penalties, under Applicable Laws. No third party holds any mining or real property rights that conflict in any material respect with
    the Guarantor’s rights in and to the Real Property. 
	 	 
	39.	Subject
    only to the rights of any Governmental Authority set out in Section (39) of the Disclosure Letter and except for Permitted Liens,
    no Person is entitled to or holds any material rent, option, back-in right, earn-in right, right of first refusal, royalty, stream,
    participation, production or similar interests, or other payment in the nature of rent or royalty, on or for the Project, including
    any Products.
	 	 
	40.	To
    the knowledge of the Obligors, there is no (i) expropriatory act or series of expropriatory acts, including eminent domain, confiscation,
    nationalization, requisition, deprivation, sequestration and/or similar acts, by law, order, executive or administrative action or
    otherwise of any Governmental Authority or any corporation or other entity controlled by any Governmental Authority the result of
    which expropriatory act or series of expropriatory acts is that all or substantially all of the rights, privileges and benefits pertaining
    to, associated with, threatened against or affecting all or any part of the Mine (collectively, an “Expropriation Event”)
    and (ii) circumstances, notices, discussions, or negotiations which could reasonably be expected to result in such an Expropriation
    Event. 
	 	 
	41.	Except
    as set out in Section (41) of the Disclosure Letter, to the best knowledge of the Obligors, no indigenous or community groups (and
    no Persons on their behalf) have asserted any interest or rights or commenced or threatened any claims or proceedings affecting the
    Project or the Obligors that could result in a Material Adverse Effect

 

Common
Shares

 

	42.	The
    Common Shares are listed and posted for trading on the CSE and Debtor is a “reporting issuer” not in default of the requirements
    of the Applicable Securities Legislation.
	 	 
	43.	The
    Common Shares, when issued in compliance with the provisions of the Debenture will be validly issued, fully paid and non-assessable
    and free of any liens or encumbrances and issued in compliance with all Applicable Securities Legislation. 

 

Other

 

	44.	Except
    as set out in Section (44) of the Disclosure Letter, no Obligor is party to any contract that would give rise to a valid claim against
    an Obligor and/or any Sprott Entity for a brokerage commission, finder’s fee or like payment in connection with the transactions
    contemplated by this Debenture or the other Transaction Documents.
	 	 
	45.	Section
    (45) of the Disclosure Letter, lists all bank accounts of each of Debtor and Guarantor and the depositary bank at which such accounts
    are maintained. 

 

    	 

    	E-1

     

EXHIBIT
“E”

PROJECT MINING CLAIMS

 

[Attached
hereto]

 

    	 

    

.

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