Document:

THIRD
CREDIT AGREEMENT MODIFICATION AGREEMENT

 

THIS
AGREEMENT made as of the 7th day of October, 2013

 

BETWEEN:

 

ATNA
RESOURCES LTD., a corporation organized and existing under the laws of the Province of British Columbia

 

(together
with its successors and permitted assigns, the “Borrower”)

 

AND:

 

CANYON
RESOURCES CORPORATION, a corporation organized and existing under the laws of the State of Delaware

 

(together
with its successors and permitted assigns, “CRC”)

 

AND:

 

ATNA
RESOURCES INC., a corporation organized and existing under the laws of the State of Nevada

 

(together
with its successors and permitted assigns, “ARI”)

 

AND:

 

CR
BRIGGS CORPORATION, a corporation organized and existing under the laws of the State of Colorado

 

(together
with its successors and permitted assigns, “CR Briggs”,
and with CRC and ARI, collectively, the “Guarantors”)

 

AND:

 

SPROTT
RESOURCE LENDING PARTNERSHIP, a general partnership organized and existing under the laws of the Province of Ontario

 

(together
with its successors and permitted assigns, the “Lender”)

 

RECITALS:

 

WHEREAS
the Borrower, the Guarantors and the Lender entered into a credit agreement dated as of August 31, 2011 in respect of a $20,000,000
senior secured credit facility granted by the Lender in favour of the Borrower (the “Credit
Agreement”).

 

WHEREAS
the Borrower, the Guarantors and the Lender entered into a credit agreement modification agreement dated as of February 15,
2012 (the “Credit Agreement Modification Agreement”)
pursuant to which the parties thereto agreed to amend the Credit Agreement to change the mandatory prepayments contemplated in
Section 3.2 of the Credit Agreement, to increase the amount of Permitted Indebtedness as it relates to Purchase Money Obligations
and Capital Lease Obligations of the Credit Parties to $20,000,000 and to extend the Stated Maturity Date to August 31, 2013.

 

    	 

    	 

    

 

WHEREAS
the Borrower, the Guarantors and the Lender entered into a second credit agreement modification agreement dated as of March
15, 2013 (the “Second Credit Agreement Modification Agreement”)
pursuant to which the parties thereto agreed to further amend the Credit Agreement to further extend the Stated Maturity Date
to August 29, 2014, to provide for the payment of an extension bonus in respect thereof, to amend the prepayment terms and to
amend certain negative covenants, including in respect of Permitted Indebtedness and Permitted Encumbrances.

 

WHEREAS
the Borrower and the Guarantors have requested that the Lender agree to further amend the Credit Agreement to (i) further extend
the Stated Maturity Date to November 30, 2014, (ii) increase the interest rate applicable to all outstanding amounts under the
Facility to 12% per annum, (iii) provide for additional mandatory principal prepayments commencing January 31, 2014, (iv) provide
for the issuance of a common share bonus to the Lender, (v) provide for additional security to be granted over the Briggs Project
(as later defined), and (vi) amend certain other covenants contained in the Credit Agreement, all in accordance with and subject
to the terms of this Agreement.

 

AGREEMENTS:

 

NOW
THEREFORE for good and valuable consideration, the receipt and sufficiency of which are acknowledged by each of the Borrower,
the Guarantors and the Lender, the Borrower, the Guarantors and the Lender agree as follows:

 

ARTICLE
1

INTERPRETATION

 

Definitions

 

		1.1	In this Agreement, unless there is something in the subject matter or context inconsistent therewith,
all terms not otherwise defined herein shall have the meanings given to such terms in the Credit Agreement, as amended.

 

		1.2	Section 1.1 of the Credit Agreement is hereby amended by:

 

		(a)	deleting the definition of “Guarantors”
in its entirety and replacing it with the following:

 

“Guarantors”
means, collectively, CRC, ARI and CR Briggs, and their respective successors and permitted assigns;”;

 

		(b)	deleting the definition of “Secured Assets”
in its entirety and replacing it with the following:

 

“Secured
Assets” means all of the assets now owned or hereafter acquired by the
Credit Parties, except for the shares of all Subsidiaries of CRC other than ARI and CR Briggs;’’; and

 

		(c)	deleting the definition of “Security Documents”
in its entirety and replacing it with the following:

 

“Security
Documents” means, collectively, the security and other agreements and
documents listed in Schedule B hereto and delivered pursuant to Article 4 of this Agreement, and all additional security and other
agreements and documents delivered by any Credit Party pursuant to any amendment, modification or renewal of this Agreement;”

 

		(d)	deleting the definition of “Sureties”
in its entirety and replacing it with the following:

 

“Sureties”
means the Lexon Insurance surety bonds more particularly described in Schedule D;”.

 

    	- 2 -

    	 

    

 

		1.3	Section 1.1 of the Credit Agreement is hereby amended by adding the following definitions:

 

		(a)	“Briggs Project”
has the meaning attributed to such term in Schedule E hereto; and

 

		(b)	“Non-core Assets”
means the assets of the Credit Parties not subject to the Security Interest granted to and in favour of the Lender pursuant
to the Security Documents.

 

		1.4	The definition of Facility Documents shall for all purposes include this Agreement, the Additional
Security Documents and all documents and instruments delivered hereunder and thereunder.

 

Governing
Law

 

		1.5	This Agreement shall be governed by the laws of the Province of British Columbia and the federal
laws of Canada applicable therein and shall be treated in all respects as a British Columbia contract. The parties hereby irrevocably
attorn to the non-exclusive jurisdiction of the Courts of the Province of British Columbia.

 

Time
of Essence

 

		1.6	Time shall be of the essence in all respects of this Agreement.

 

ARTICLE
2

CREDIT
AGREEMENT SCHEDULES

 

Schedules

 

		2.1	Schedule A to the Credit Agreement is hereby amended by deleting that Schedule in its entirety
and replacing it with Schedule A hereto.

 

		2.2	Schedule B to the Credit Agreement is hereby amended by deleting that Schedule in its entirety
and replacing it with Schedule B hereto.

 

		2.3	Schedule D to the Credit Agreement is hereby amended by deleting that Schedule in its entirety
and replacing it with Schedule C hereto.

 

ARTICLE
3

ACKNOWLEDGMENTS,
REPRESENTATIONS AND WARRANTIES

 

Outstanding
Facility Balance

 

		3.1	The Credit Parties acknowledge and confirm that the outstanding principal balance of the Facility
as at the date of this Agreement is $17,500,000.

 

Representations
and Warranties

 

		3.2	Subject to the amendments to the Schedules to the Credit Agreement contemplated in Article 2, the
Credit Parties hereby reaffirm and restate each of the representations and warranties set out in Article 6 of the Credit Agreement
as at the date of this Agreement, except that:

 

		(a)	with reference to the representation and warranty set out at subsection 6.1(g) of the Credit Agreement
there are as at the date of this Agreement 182,215,706 Common Shares issued and outstanding as fully paid and non-assessable shares
in the capital of the Borrower;

 

    	- 3 -

    	 

    

 

		(b)	with reference to the representations and warranties set out at subsections 6.1(f)(ii) and 6.1(aa),
CR Briggs received a Notice of Violation in June 2013 in connection with the fact that one of its four stationary diesel generators
does not meet State of California emissions standards for diesel airborne toxic control measures;

 

		(c)	with reference to the representations and warranties set out at subsections 6.1(p) and 6.1(ff)
the granting of the additional security encumbering the assets of CR Briggs as contemplated under this Agreement is contrary to
the restrictive covenants under the Gold Participating Bonds; and

 

		(d)	with reference to the representations and warranties set out at subsections 6.1(ii) DMC Mining
Services Corporation has filed a lien against the Pinson Project described in the Notice of Lien filed in the office of the Humboldt
County Recorder, Nevada, on September 20, 2013 under No. 2013 4254, securing an outstanding balance of US$1,370,791.42.

 

No
Default or Events of Default

 

		3.3	No event or circumstance has occurred since the date of the Credit Agreement which could be construed
as a Default or an Event of Default, and the Credit Parties have and continue to fulfill all of their respective covenants and
other obligations under each of the Facility Documents, except, with reference to Section 8.1(o) of the Credit Agreement, the Borrower
has suspended the further exploration and development of the Pinson Project resulting in a material delay in the Pinson Project’s
development and achievement of Commercial Production.

 

Limited
Waiver of Event of Default

 

		3.4	The Lender hereby waives the Event of Default caused under Section 8.1(k) of the Credit Agreement
by virtue of the granting of security by CR Briggs contemplated by this Agreement, provided however, that if the indebtedness under
the Gold Bonds is accelerated or if for any reason enforcement action is initiated by or on behalf of the holders of the Gold Bonds,
it shall be an Event of Default if the indebtedness under the Gold Bonds has not been paid or satisfied in full, whether from the
Escrow Proceeds or otherwise, on or before the date which is fourteen days from any such acceleration or enforcement actions.

 

Guarantors’
Acknowledgments

 

		3.5	CRC and ARI hereby acknowledge and confirm their continuing covenant and agreement under each of
the Facility Documents to which they are a party, including their respective guarantees dated effective August 31, 2011 (the “Guarantees”)
delivered in connection with the execution and delivery of the Credit Agreement and all security therefor. Notwithstanding
any term of any Facility Documents to the contrary, CRC and ARI hereby confirm that the Guarantees and all security therefor secures
the payment and performance by the Borrower to the Lender of all obligations and amounts owing by the Borrower to the Lender pursuant
to the Credit Agreement, as amended, including all principal, interest and other amounts, and constitute legal, valid and binding
obligations of CRC and ARI, enforceable against CRC and ARI in accordance with their terms.

 

    	- 4 -

    	 

    

 

ARTICLE
4

STATED
MATURITY DATE

 

Stated
Maturity Date

 

		4.1	The definition of “Stated Maturity Date” set out in Section 1.1 of the Credit Agreement,
as previously amended by Section 2.2 of the Credit Agreement Modification Agreement and Section 3.1 of the Second Credit Agreement
Modification Agreement, shall be further amended by deleting that paragraph in its entirety and replacing it with the following:

 

“Stated
Maturity Date” means “November 30, 2014”.

 

Promissory
Note

 

		4.2	Concurrently with the execution and delivery of this Agreement, the Borrower shall execute and
deliver to the Lender a replacement promissory note in the form attached as Schedule D hereto, and, coincident with such delivery,
the Lender will surrender to the Borrower the previous promissory note which is being replaced.

 

ARTICLE
5

INTEREST
RATE

 

Interest
Rate

 

		5.1	Section 2.6 of the Credit Agreement is hereby amended by deleting that paragraph in its entirety
and replacing it with the following:

 

“Interest
shall accrue on the Principal Amount of the Advance from the Closing Date (as defined in the Third Credit Agreement Modification
Agreement dated as of October 7, 2013 between the Credit Parties and the Lender, as well as on all overdue amounts outstanding
in respect of interest, costs or other fees or expenses payable hereunder, at the rate of twelve percent (12.00%) per annum, calculated
daily and compounded monthly (effective annual rate of 12.68%), and shall be payable by the Borrower to the Lender monthly
on the last Business Day of every month, before as well as after maturity, default and judgment. The Borrower covenants and agrees
to establish and maintain throughout the term of the Facility a pre-authorized electronic debit arrangement with a financial institution
on terms satisfactory to the Lender, pursuant to which all payments coming due to the Lender shall be made.”.

 

ARTICLE
6

EXTENSION
BONUS

 

Extension
Bonus

 

		6.1	In consideration for the Lender entering into this Agreement, on the Closing Date the Borrower
covenants and agrees to pay to the Lender, or as the Lender may direct, a $1,050,000 extension bonus in the form of 6,562,500 Common
Shares issued at a deemed price of $0.16 per Common Shares (the “Extension Bonus
Shares”). The Extension Bonus Shares shall have a maximum hold period
under Applicable Securities Laws of four months and one day from their date of issuance.

 

    	- 5 -

    	 

    

 

ARTICLE
7

PREPAYMENT

 

Mandatory
Prepayments

 

		7.1	In addition to all other prepayment obligations, the Borrower covenants and agrees to make principal
prepayments of the Facility in the amount of $500,000 each on the last Business Day of every calendar month, commencing January
31, 2014.

 

		7.2	Section 3.3 of the Credit Agreement, as amended by Section 3.7 of the Second Credit Agreement Modification
Agreement, is hereby amended by deleting that paragraph in its entirety.

 

		7.3	Section 3.2(a) of the Credit Agreement is hereby amended by deleting that paragraph in its entirety
and replacing it with the following:

 

“(a)
any of the Credit Parties or any of their direct or indirect Subsidiaries shall sell or otherwise dispose of any Secured Assets
outside of the ordinary course of business, the Credit Parties shall pay or cause to be paid all cash proceeds of such sales or
other dispositions of assets, net of reasonable selling costs and satisfaction of any outstanding Purchase Money Obligations in
respect of such assets, to the Lender, to be applied on account of the outstanding Principal Amount and all accrued but unpaid
interest, bonus and other costs, fees or charges payable hereunder from time to time, provided that: (i) all payments to the Lender
pursuant to this Section 3.2(a) shall be made monthly, on the last Business Day of each month, unless the amount payable is equal
to or exceeds $100,000 in the aggregate, in which case such payment shall be made forthwith, and (ii) the Lender hereby waives
any prepayment fees that would otherwise arise on such prepayments;

 

		7.4	Section 3.2 of the Credit Agreement is hereby amended by adding a new paragraph (a.1) as follows:

 

“(a.1)
any of the Credit Parties or any of their direct or indirect Subsidiaries shall sell or otherwise dispose of any Non-core Assets,
the Credit Parties shall pay or cause to be paid 75% of all cash proceeds of such sales or other dispositions of Non-core Assets,
net of reasonable selling costs and satisfaction of any outstanding Purchase Money Obligations in respect of such assets, to the
Lender, to be applied on account of the outstanding Principal Amount and all accrued but unpaid interest, bonus and other costs,
fees or charges payable hereunder from time to time. All payments to the Lender pursuant to this Section 3.2(a.1) shall be made
monthly, on the last Business Day of each month, unless the amount payable is equal to or exceeds $100,000 in the aggregate, in
which case such payment shall be made forthwith;”.

 

ARTICLE
8

COVENANTS

 

Positive
Covenants

 

		8.1	The Borrower covenants and agrees to:

 

		(a)	raise aggregate net cash proceeds of not less than $5,000,000 on or before March 31, 2014 through
any combination of sales of Non-core Assets of the Credit Parties on terms satisfactory to the Lender, acting reasonably, and the
completion of one or more equity financings; and

 

    	- 6 -

    	 

    

 

		(b)	from and after February, 2014,
                                         maintain continuous minimum working capital, comprised of consolidated current assets
                                         of the Borrower less consolidated current liabilities of the Borrower, of not less than
                                         $1,000,000 (“Required Working Capital”),
                                         and to provide the Lender with a detailed accounting of same monthly, within ten Business
                                         Days after the end of each calendar month, provided that the Lender acknowledges and
                                         agrees that such reports will, as a result of ordinary and customary business operations
                                         and accounting practices, be subject to refinement and adjustment subsequent to their
                                         having been provided to the Lender. Required Working Capital will be tested on a monthly
                                         basis using the reporting provided by the Borrowers and information derived from the
                                         Borrower’s quarterly financial statements.

 

Negative
Covenants

 

		8.2	Section 7.2 of the Credit Agreement is hereby amended by adding a new paragraph (v) as follows:

 

“(v)        cause
or permit any of the Credit Parties to undertake any new projects, exploration or development, except for:

 

(i)        projects
required to support existing production operations at the Briggs Project;

 

(ii)       completion
of the Pinson Project open pit feasibility study, provided that expenditures in relation thereto do not exceed $200,000 in the
aggregate between September 30, 2013 and November 30, 2014;

 

(iii)       restart
analysis of the Pinson Project underground operations, provided that expenditures in relation thereto do not exceed $150,000 in
the aggregate between September 30, 2013 and November 30, 2014; and

 

(iv)      re-costing
analysis of the Reward mine, provided that expenditures in relation thereto do not exceed $150,000 in the aggregate between September
30, 2013 and November 30, 2014,

 

provided
that, if the Borrower raises additional capital through the completion of one or more equity financings, and the stated use of
proceeds of such financings are said to be for the Pinson Project or the Reward mine project, then, subject to the Lender’s
consent, such consent not to be unreasonably withheld, the spending limits set out in this section 7.2 for each such project will
be raised by the amount of such financing proceeds allocated to that project.”.

 

ARTICLE
9

ADDITIONAL
SECURITY

 

Grant
of Additional Security

 

		9.1	In consideration for the mutual premises set forth in this Agreement, the Credit Parties hereby
covenant and agree to grant to and in favour of the Lender the following additional security:

 

		(a)	a guaranty of CR Briggs;

 

		(b)	a share pledge agreement of CRC, pursuant to which CRC will pledge and grant a first priority security
interest in favour of the Lender over all of the issued and outstanding shares in the capital of CR Briggs;

 

		(c)	a security agreement of CR Briggs, pursuant to which CR Briggs will grant to and in favour of the
Lender a security interest over all of its present and after-acquired personal property; and

 

    	- 7 -

    	 

    

 

		(d)	a deed of trust of CR Briggs in respect of the Briggs Project,

 

each
in form and on terms satisfactory to the Lender (collectively, the “Additional
Security Documents’).

 

Escrow
of Outstanding Gold Participating Bond Payment Obligations

 

		9.2	On the Closing Date, the Borrower shall deposit $1,100,000 (the “Escrow
Proceeds”) with the Borrower’s Counsel, in trust, to be held by
the Borrower’s Counsel pursuant to an escrow agreement in the form attached as Schedule F hereto, which will provide for
the release of the Escrow Proceeds (or such lesser portion of the Escrow Proceeds as may be required to satisfy all obligations
under the Gold Participating Bonds) to the holders of the Gold Participating Bonds, or the trustee thereof, in accordance with
the terms of the Gold Participating Bonds (on the earlier of the due dates and any acceleration after default), with any remaining
proceeds being released to the Borrower after December 31, 2013.

 

Permitted
Indebtedness

 

		9.3	The definition of “Permitted Indebtedness” set out in Section 1.1 of the Credit Agreement
is hereby amended by:

 

		(a)	deleting paragraph (b) and paragraph (c) (as previously amended by Section 2.3 of the Credit Agreement
Modification Agreement and Section 3.8 of the Second Credit Agreement Modification Agreement) and replacing it with the following
new paragraph (b):

 

“(b)     until
December 31, 2013, Indebtedness in an aggregate amount of up to $10,500,000, and thereafter, Indebtedness in an aggregate amount
of up to $10,000,000, in respect of Equipment Financing Notes, Capital Leases, the Sureties, Purchase Money Obligations, Capital
Lease Obligations and the Gold Participating Bonds, incurred by the Credit Parties and further provided that in the case of Purchase
Money Obligations and Capital Lease Obligations, such Indebtedness is secured only by Security Interests granted over all or any
portion of the assets acquired pursuant to such Purchase Money Obligations and Capital Lease Obligations;”,and

 

		(b)	deleting subparagraphs (g) and (h) in their entirety and replacing them with the following:

 

		(c)	“(g)     any Indebtedness incurred in the ordinary course of business
through financing of corporate insurance policies, reclamation bonds and sureties acquired after the date hereof when required
by a utility or Governmental Authority in connection with the operations the Pinson Project or the Briggs Project; and

 

(h)     any
Indebtedness incurred in the ordinary course of business through financing of corporate insurance policies, reclamation bonds and
sureties reclamation bonds and sureties acquired after the date hereof when required by a utility or Governmental Authority in
connection with the operations of projects other than the Pinson Project or the Briggs Project, provided the aggregate amount of
such Indebtedness does not exceed $1,000,000”;

 

Permitted
Encumbrances

 

		9.4	The definition of “Permitted Encumbrances” set out in Section 1.1 of the Credit Agreement
is hereby amended by:

 

		(a)	adding a new paragraph (p) as follows:

 

    	- 8 -

    	 

    

 

“(p)
    any Security Interest granted by CR Briggs over all or any portion of assets comprising the Briggs Project
securing the obligations of Canyon Resources (Jersey) Limited under or in respect of the Gold Participating Bonds, securing an
aggregate maximum principal amount of up to $1,100,000;”; and 

 

		(b)	adding a new a subparagraph (q) as follows:

 

“(q)     until
December 31, 2013, amounts owing under the lien recorded by DMC Mining Services Corporation against the Pinson Project described
in the Notice of Lien filed in the office of the Humboldt County Recorder, Nevada, on September 20, 2013 under No. 2013 4254, up
to a maximum amount of US$1,400,000;”.

 

ARTICLE
10

CONDITIONS
PRECEDENT

 

Conditions
Precedent to the Effectiveness of this Agreement

 

		10.1	The effectiveness of this Agreement
                                         is subject to and conditional upon the following conditions precedent being satisfied,
                                         fulfilled or otherwise met to the satisfaction of the Lender on or before October 18,
                                         2013 (in this Agreement, the “Closing
                                         Date”):

 

		(a)	receipt by the Lender of the following documents, each in full force and effect, and in form and
substance satisfactory to the Lender:

 

		(i)	executed copies of the Additional Security Documents;

 

		(ii)	certificates representing the Extension Bonus Shares;

 

		(iii)	certificates of status or other similar type of evidence for each of the Credit Parties from all
Relevant Jurisdictions;

 

		(iv)	certified copies of the Constating Documents of each of the Credit Parties;

 

		(v)	certified copies of all Material Contracts in respect of the Briggs Project;

 

		(vi)	certified copies of the directors’ resolutions of each of the Credit Parties with respect
to its authorization, execution and delivery of this Agreement and the Additional Security Documents to which it is a party;

 

		(vii)	certificates of officers of each of the Credit Parties as to corporate matters and certifying that
(A) all of the representations and warranties of each of the Credit Parties contained herein or in any other Facility Document
are true and correct on and as of the Closing Date, and (B) no Default or Event of Default has occurred and is continuing;

 

		(viii)	all regulatory approvals, including any required approvals of the Canadian Exchange or the American
Exchange, of the transactions contemplated herein;

 

		(ix)	releases, discharges and postponements (in registrable form where appropriate) covering all Security
Interests or other encumbrances affecting the Secured Assets which are not Permitted Encumbrances, if any, or an undertaking satisfactory
to the Lender to provide such releases, discharges and postponements;

 

    	- 9 -

    	 

    

 

		(x)	opinions of the counsel to the Credit Parties relating to, among other things, the subsistence
of each of the Credit Parties, and the due authorization, execution, delivery and enforceability of the Facility Documents delivered
in connection with this Agreement;

 

		(xi)	title opinions prepared by the Credit Parties’ counsel with respect to the Briggs Project,
including satisfactory searches of all mineral rights and other interests of each of the Credit Parties in respect of the Briggs
Project; and

 

		(xii)	such other documents, certificates, opinions and agreements which the Lender may reasonably require;

 

		(b)	the Lender, acting reasonably, shall have completed and be satisfied with its financial, business,
environmental, tax and other due diligence review of the Credit Parties and the Briggs Project, including, without limitation,
its review of all feasibility studies, mine plans, budgets, pro forma financial statements and all Material Contracts and other
documents in respect of the Briggs Project;

 

		(c)	evidence that all Security Interests pursuant to the Additional Security Documents have been duly
perfected and registered in all Relevant Jurisdictions and any other relevant jurisdiction as required by the Lender and the Lender’s
Counsel;

 

		(d)	the Lender shall have received the approval of its credit committee and other required authorizations,
including the approval of its partners;

 

		(e)	as at the Closing Date, the Lender shall be satisfied that no event or circumstance shall have
occurred or exist that, in the Lender’s sole and absolute discretion, could reasonably be expected to have a Material Adverse
Effect on any of the Credit Parties; and

 

		(f)	there shall be no other Security Interest or other liens, claims or encumbrances whatsoever, which
rank equal to or in priority to the Lender’s security, other than Permitted Encumbrances.

 

		10.2	The conditions in Section 10.1 are inserted for the sole benefit of the Lender and may be waived
by the Lender, in whole or in part, with or without conditions, as the Lender may determine in its sole and absolute discretion.

 

ARTICLE
11

MISCELLANEOUS

 

Binding
Effect

 

		11.1	This Agreement shall be binding upon, inure to the benefit of and be enforceable by the Borrower,
the Guarantors and the Lender and their respective successors and assigns.

 

Entire
Agreement

 

		11.2	This Agreement amends and modifies the Credit Agreement, as previously amended, and together with
the other Facility Documents reflect the entire agreement between the Credit Parties and the Lender with respect to the matters
set forth herein and therein and supersedes any prior agreements, commitments, drafts, communication, discussions and understandings,
oral or written, with respect thereto. All references to the “Credit Agreement” in each of the Facility Documents shall
be deemed for all purposes hereafter to refer to the “Credit Agreement, as amended”.

 

    	- 10 -

    	 

    

 

Amendments

 

		11.3	This Agreement may only be amended or modified by further written instrument, executed and delivered
by each of the parties hereto.

 

Legal
Fees

 

		11.4	The Borrower shall pay to the Lender all of the Lender’s reasonable legal fees (on a solicitor
and own client basis) and other costs, charges and expenses (including due diligence expenses) of and incidental to the preparation,
execution and completion of this Agreement.  If not paid within thirty (30) days of demand, such amount will be added to and form
part of the principal amount of the Facility and shall accrue interest from the date of demand as if it had been advanced by the
Lender to the Borrower hereunder.

 

Further
Assurances

 

		11.5	The Credit Parties shall provide the Lender with such further documents, instruments and assurances
as the Lender may reasonably require to complete the transactions contemplated herein.

 

Counterparts
and Facsimile

 

		11.6	This Agreement may be executed in counterparts and by electronic transmission of an authorized
signature and each such counterpart shall be deemed to form part of one and the same document.

 

[signature
pages follow]

 

    	- 11 -

    	 

    

 

IN
WITNESS WHEREOF the parties hereto have executed this Agreement under the hands of their proper officers duly authorized in
that behalf.

 

	ATNA
    RESOURCES LTD.
	 	 
	Per:	/s/ James  Hesketh	 
	 	Authorized Signatory
	 	 
	Per:	/s/ Rodney D. Gloss	 
	 	Authorized Signatory
	 	 
	CANYON
    RESOURCES CORPORATION
	 	 
	Per:	/s/ James  Hesketh	 
	 	Authorized Signatory
	 	 
	Per:	/s/ Rodney D. Gloss	 
	 	Authorized Signatory
	 	 
	ATNA
    RESOURCES INC.
	 	 
	Per:	/s/ James  Hesketh	 
	 	Authorized Signatory
	 	 
	Per:	/s/ Rodney D. Gloss	 
	 	Authorized Signatory
	 	 
	CR
    BRIGGS CORPORATION
	 	 
	Per:	/s/
    James Hesketh	 
	 	Authorized Signatory
	 	 
	Per:	/s/
    Rodney D. Gloss	 
	 	Authorized Signatory

 

    	- 12 -

    	 

    

 

SPROTT
RESOURCE LENDING

PARTNERSHIP
by its managing partner

Sprott
Lending Consulting Limited

Partnership,
by its general partner

Sprott
Lending Consulting GP Inc.

 

	Per:	/s/ [Illegible]	 
	 	Authorized Signatory
	 	 
	Per.	/s/ [Illegible]	 
	 	Authorized Signatory

 

    	- 13 -

    	 

    

 

FOURTH
CREDIT AGREEMENT MODIFICATION AGREEMENT

 

THIS
AGREEMENT made as of the 10th day of December, 2013

 

BETWEEN:

 

ATNA
RESOURCES LTD., a corporation organized and existing under the laws of the Province of British Columbia

 

(together
with its successors and permitted assigns, the “Borrower”)

 

AND:

 

CANYON
RESOURCES CORPORATION, a corporation organized and existing under the laws of the State of Delaware

 

(together
with its successors and permitted assigns, “CRC”)

 

AND:

 

ATNA
RESOURCES INC., a corporation organized and existing under the laws of the State of Nevada

 

(together
with its successors and permitted assigns, “ARI”)

 

AND:

 

CR
BRIGGS CORPORATION, a corporation organized and existing under the laws of the State of Colorado

 

(together
with its successors and permitted assigns, “CR Briggs”,
and with CRC and ARI, collectively, the “Guarantors”)

 

AND:

 

SPROTT
RESOURCE LENDING PARTNERSHIP, a general partnership organized and existing under the laws of the Province of Ontario

 

(together
with its successors and permitted assigns, the “Lender”)

 

RECITALS:

 

WHEREAS
the Borrower, the Guarantors and the Lender entered into a credit agreement dated as of August 31, 2011 in respect of a $20,000,000
senior secured credit facility granted by the Lender in favour of the Borrower (the “Credit Agreement”).

 

WHEREAS
the Borrower, the Guarantors and the Lender entered into a credit agreement modification agreement dated as of February 15, 2012
(the “Credit Agreement Modification Agreement”) pursuant to which the parties thereto agreed to amend the Credit
Agreement to change the mandatory prepayments contemplated in Section 3.2 of the Credit Agreement, to increase the amount of Permitted
Indebtedness as it relates to Purchase Money Obligations and Capital Lease Obligations of the Credit Parties to $20,000,000 and
to extend the Stated Maturity Date to August 31, 2013.

 

Execution
Copy

 

    	 

    	 

    

 

WHEREAS
the Borrower, the Guarantors and the Lender entered into a second credit agreement modification agreement dated as of March
15, 2013 (the “Second Credit Agreement Modification Agreement”)
pursuant to which the parties thereto agreed to further amend the
Credit Agreement to further extend the Stated Maturity Date to August 29, 2014, to provide for the payment of an extension
bonus in respect thereof, to amend the prepayment terms and to amend certain negative covenants, including in respect of Permitted
Indebtedness and Permitted Encumbrances.

 

WHEREAS
the Borrower and the Guarantors entered into a third credit agreement modification agreement dated as of October 7, 2013 (the “Third
Credit Agreement Modification Agreement”) pursuant to which the parties
agreed to further amend the Credit Agreement to (i) further extend the Stated Maturity Date to November 30, 2014, (ii) increase
the interest rate applicable to all outstanding amounts under the Facility to 12% per annum, (iii) provide for additional mandatory
principal prepayments commencing January 31, 2014, (iv) provide for the issuance of a common share bonus to the Lender, (v) provide
for additional security to be granted over the Briggs Project (as later defined), and (vi) amend certain other covenants contained
in the Credit Agreement.

 

WHEREAS
as a result of delays in obtaining the approval of the Canadian Exchange for the issuance of the Extension Bonus Shares (as defined
in the Third Credit Agreement Modification Agreement), the conditions precedent to the effectiveness of the Third Credit Agreement
Modification Agreement were not satisfied by the date provided in the Third Credit Agreement Modification Agreement.

 

WHEREAS
the Borrower and the Lender have agreed to modify the terms for payment of the Extension Bonus (as defined herein).

 

WHEREAS
the Borrower has made arrangements for the full and final indefeasible repayment of the Gold Participating Bonds, including the
segregation of sufficient funds in a separate bank account, for payment to the holders thereof on or before December 18, 2013,
being the due date thereof.

 

WHEREAS
the Borrower, the Guarantors and the Lender wish to modify and make the Third Credit Agreement Modification Agreement effective
and to complete the transactions contemplated therein, subject to and in accordance with the terms and conditions of this Agreement.

 

AGREEMENTS:

 

NOW
THEREFORE for good and valuable consideration, the receipt and sufficiency of which are acknowledged by each of the Borrower,
the Guarantors and the Lender, the Borrower, the Guarantors and the Lender agree as follows:

 

ARTICLE
1

INTERPRETATION

 

Definitions

 

		1.1	In this Agreement, unless there is something in the subject matter or context inconsistent therewith,
all terms not otherwise defined herein shall have the meanings given to such terms in the Credit Agreement, as amended.

 

Governing
Law

 

		1.2	This Agreement shall be governed by the laws of the Province of British Columbia and the federal
laws of Canada applicable therein and shall be treated in all respects as a British Columbia contract. The parties hereby irrevocably
attorn to the non-exclusive jurisdiction of the Courts of the Province of British Columbia.

 

Execution
Copy

 

    	- 2 -

    	 

    

 

Time
of Essence

 

		1.3	Time shall be of the essence in all respects of this Agreement.

 

ARTICLE
2

ACKNOWLEDGMENTS,
REPRESENTATIONS AND WARRANTIES

 

Outstanding
Facility Balance

 

		2.1	The Credit Parties acknowledge and confirm that the outstanding principal balance of the Facility
as at the date of this Agreement is $17,472,696.41.

 

Representations
and Warranties

 

		2.2	Subject to the amendments to the Schedules to the Credit Agreement contemplated in Article 2, the
Credit Parties hereby reaffirm and restate each of the representations and warranties set out in Article 6 of the Credit Agreement
as at the date of this Agreement, except that:

 

		(a)	with reference to the representation and warranty set out at subsection 6.1(g) of the Credit Agreement
there are as at the date of this Agreement 182,609,376 Common Shares issued and outstanding as fully paid and non-assessable shares
in the capital of the Borrower;

 

		(b)	with reference to the representations and warranties
set out at subsections 6.1(f)(ii) and 6.1(aa), CR Briggs received a Notice of Violation in June 2013 in connection with the
fact that one of its four stationary diesel generators does not meet State of California emissions standards for diesel airborne
toxic control measures;

 

		(c)	with reference to the representations and warranties set out at subsections 6.1(p) and 6.1(ff)
the granting of the additional security encumbering the assets of CR Briggs as contemplated under this Agreement is contrary to
the restrictive covenants under the Gold Participating Bonds; and

 

		(d)	with reference to the representations and warranties set out at subsections 6.1(ii) DMC Mining
Services Corporation has filed a lien against the Pinson Project described in the Notice of Lien filed in the office of the Humboldt
County Recorder, Nevada, on September 20, 2013 under No. 2013 4254, securing an outstanding balance of US$1,370,791.42.

 

No
Default or Events of Default

 

		2.3	No event or circumstance has occurred since the date of the Credit Agreement which could be construed
as a Default or an Event of Default, and the Credit Parties have and continue to fulfill all of their respective covenants and
other obligations under each of the Facility Documents, except, with reference to Section 8.1(o) of the Credit Agreement, the Borrower
has suspended the further exploration and development of the Pinson Project resulting in a material delay in the Pinson Project’s
development and achievement of Commercial Production.

 

Guarantors’
Acknowledgments

 

		2.4	CRC and ARI hereby acknowledge and
                                         confirm their continuing covenant and agreement under each of the Facility Documents
                                         to which they are a party, including their respective guarantees dated effective August
                                         31, 2011 (the “Guarantees”)
                                         delivered in connection with the execution and delivery of the Credit Agreement and all
                                         security therefor. Notwithstanding any term of any Facility Documents to the contrary,
                                         CRC and ARI hereby confirm that the Guarantees and all security therefor secures the
                                         payment and performance by the Borrower to the Lender of all obligations and amounts
                                         owing by the Borrower to the Lender pursuant to the Credit Agreement, as amended, including
                                         all principal, interest and other amounts, and constitute legal, valid and binding obligations
                                         of CRC and ARI, enforceable against CRC and ARI in accordance with their terms.

 

Execution
Copy

 

    	- 3 -

    	 

    

 

ARTICLE
3

EXTENSION
BONUS

 

Extension
Bonus

 

		3.1	Section 6.1 of the Third Credit Agreement Modification Agreement is hereby amended by deleting
that section in its entirety and replacing it with the following:

 

“6.1       In
consideration for the Lender entering into this Agreement, on the Closing Date the Borrower covenants and agrees to pay to the
Lender, or as the Lender may direct, a $1,050,000 extension bonus (the “Extension
Bonus”) in the form of 6,562,500 Common Shares issued at a deemed price of $0.16 per Common Shares (the “Upfront
Extension Bonus Shares”). The Upfront Extension Bonus Shares shall have
a maximum hold period under Applicable Securities Laws of four months and one day from their date of issuance.

 

6.2         In
the event that the Borrower is unable to obtain the conditional approval of the Canadian Exchange to the issuance of the Upfront
Extension Bonus Shares on or before the Closing Date or such later date as the Lender may determine, the Borrower may elect to
either:

 

(a)     pay
the Extension Bonus in cash on the Maturity Date; or

 

(b)     provided
that the Borrower shall have received and provided evidence satisfactory to the Lender of all applicable regulatory approvals,
including the conditional approval of the Canadian Exchange, pay the Extension Bonus on the Maturity Date in the form of Common
Shares issued at a deemed price equal to a 10% discount to the 10 day volume weighted average trading price of such Common Shares
as they trade on the Canadian Exchange immediately prior to the Maturity Date (the “Backend
Extension Bonus Shares”). The Backend Extension Bonus Shares shall have
a maximum hold period under Applicable Securities Laws of four months and one day from their date of issuance.

 

6.3         For
greater certainty, the Upfront Extension Bonus Shares shall not be payable if the Extension Bonus is paid pursuant to Section 6.2.”.

 

ARTICLE
4

ADDITIONAL
SECURITY

 

Escrow
of Outstanding Gold Participating Bond Payment Obligations

 

		4.1	Subject to the Borrower making a full and final indefeasible repayment of all obligations outstanding
in respect of the Gold Participating Bonds on or before December 31, 2013, the Lender waives the requirements set out in Section
9.2 of the Third Credit Agreement Modification Agreement to deposit the Escrow Proceeds with the Borrower’s Counsel, in trust,
as contemplated therein. If the full and final indefeasible repayment of all obligations outstanding in respect of the Gold Participating
Bonds is not made by the Borrower on or before December 31, 2013, the Borrower covenants and agrees to deposit the Escrow Proceeds
with the Borrower’s Counsel, in trust, pursuant to an escrow agreement substantially in the form attached as Schedule F to
the Third Credit Agreement Modification Agreement, subject a modification to provide that, except with the prior written consent
of the Lender, the Escrow Proceeds must be released to the Gold Participating Bond holders, or the trustee thereunder, in full
and final repayment thereof, on or before March 31, 2014.

 

Execution
Copy

 

    	- 4 -

    	 

    

 

ARTICLE
5

CONDITIONS
PRECEDENT

 

Conditions
Precedent to the Effectiveness of the Third Credit Agreement Modification Agreement

 

		5.1	Section 10.1 of the Third Credit Agreement Modification Agreement is hereby amended by deleting
reference in the third line to “October 18, 2013” and replacing that with “December 31, 2013”.

 

		5.2	Section 10.1(a)(ii) of the Third Credit Agreement Modification Agreement is hereby amended by deleting
that section in its entirety and replacing it with the following:

 

“(ii)     certificates
representing the Extension Bonus Shares, if the Extension Bonus Shares are delivered pursuant to Section 6.1;”.

 

		5.3	Section 10.1(a)(viii) of the Third Credit Agreement Modification Agreement is hereby amended by
deleting that section in its entirety and replacing it with the following:

 

“(viii)     all
regulatory approvals, including any required approvals of the Canadian Exchange or the American Exchange (if the Extension Bonus
Shares are delivered pursuant to Section 6.1), of the transactions contemplated herein;”.

 

ARTICLE
6

CREDIT
AGREEMENT SCHEDULES

 

Schedules

 

		6.1	Schedule D to the Third Credit Agreement Modification Agreement is hereby amended by deleting that
Schedule in its entirety and replacing it with Schedule A hereto.

 

ARTICLE
7

MISCELLANEOUS

 

Binding
Effect

 

		7.1	This Agreement shall be binding upon, inure to the benefit of and be enforceable by the Borrower,
the Guarantors and the Lender and their respective successors and assigns.

 

Entire
Agreement

 

		7.2	This Agreement amends and modifies the Credit Agreement, as previously amended, and the Third Credit
Agreement Modification Agreement, and together with the other Facility Documents reflects the entire agreement between the Credit
Parties and the Lender with respect to the matters set forth herein and therein and supersedes any prior agreements, commitments,
drafts, communication, discussions and understandings, oral or written, with respect thereto. All references to the “Credit
Agreement” in each of the Facility Documents shall be deemed for all purposes hereafter to refer to the “Credit Agreement,
as amended”.

 

Amendments

 

		7.3	This Agreement may only be amended or modified by further written
instrument, executed and delivered by each of the parties hereto.

 

Execution
Copy

 

    	- 5 -

    	 

    

 

Legal
Fees

 

		7.4	The Borrower shall pay to the Lender all of the Lender’s reasonable legal fees (on a solicitor
and own client basis) and other costs, charges and expenses (including due diligence expenses) of and incidental to the preparation,
execution and completion of this Agreement. If not paid within thirty (30) days of demand, such amount will be added to and form
part of the principal amount of the Facility and shall accrue interest from the date of demand as if it had been advanced by the
Lender to the Borrower hereunder.

 

Further
Assurances

 

		7.5	The Credit Parties shall provide the Lender with such further documents, instruments and assurances
as the Lender may reasonably require to complete the transactions contemplated herein.

 

Counterparts
and Facsimile

 

		7.6	This Agreement may be executed in counterparts and by electronic transmission of an authorized
signature and each such counterpart shall be deemed to form part of one and the same document.

 

[signature
pages follow]

 

Execution
Copy

 

    	- 6 -

    	 

    

 

IN
WITNESS WHEREOF the parties hereto have executed this Agreement under the hands of their proper officers duly authorized in
that behalf.

 

	ATNA RESOURCES LTD.
	 	 
	Per:	/s/ James  Hesketh	 
	 	Authorized Signatory	 
	 	 
	Per:	/s/ Rodney D. Gloss	 
	 	Authorized Signatory 
	 	 
	CANYON RESOURCES CORPORATION
	 	 
	Per:	/s/ James  Hesketh	 
	 	Authorized Signatory
	 	 
	Per:	/s/ Rodney D. Gloss	 
	 	Authorized Signatory
	 	 
	ATNA RESOURCES INC.
	 	 
	Per:	/s/ James  Hesketh	 
	 	Authorized Signatory
	 	 
	Per:	/s/ Rodney D. Gloss	 
	 	Authorized Signatory
	 	 
	CR BRIGGS CORPORATION
	 	 
	Per:	/s/
    James Hesketh	 
	 	Authorized Signatory
	 	 
	Per:	/s/
    Rodney D. Gloss	 
	 	Authorized
    Signatory

 

Execution
Copy

 

    	- 7 -

    	 

    

 

SPROTT
RESOURCE LENDING 

PARTNERSHIP
by its managing partner 

Sprott
Lending Consulting Limited 

Partnership,
by its general partner 

Sprott
Lending Consulting GP Inc.

 

	Per:	/s/ [Illegible]	 
	 	Authorized Signatory
	 	 
	Per:	/s/ [Illegible]	 
	 	Authorized Signatory

 

Execution
Copy

 

    	- 8 -ATNA RESOURCES
LTD.

(the “Company”)

 

restricted
share unit plan

 

Dated for reference: May 7, 2013

 

		1.	purpose and interpretation

 

		1.1	Purpose

 

The purpose of this Plan is to enhance the Company’s ability
to attract and retain individuals with experience and ability to serve as directors, officers, employees and consultants of the
Company. This Plan is intended to promote the alignment of interests between the Company’s shareholders and such individuals
by allowing them to participate in the success of the Company.

 

		1.2	Definitions

 

For the purposes of the Plan, unless there is something in the
subject matter or context inconsistent therewith the following terms shall have the following meanings:

 

		(a)	“Account” means the account set up on behalf of each Participant in accordance with Section 4.8;

 

		(b)	“Applicable Law” means all federal, provincial and foreign laws and any regulations, instruments or orders
enacted thereunder, and the rules, regulations and policies of the Stock Exchanges applicable to the Company and the Participants
in respect of the operation and administration of the Plan;

 

		(c)	“Board” means the Board of Directors of the Company, as constituted from time to time;

 

		(d)	“Change in Control” shall have the meaning as defined in Schedule A;

 

		(e)	“Company” means Atna Resources Ltd. and includes, unless the context otherwise requires, all of its Subsidiaries
and successors according to law;

 

		(f)	“Consultant” means an individual (including an individual whose services are contracted through a personal
holding company) engaged to provide ongoing management or consulting services for the Company;

 

		(g)	“Eligible Person” means, at the Grant Date, any director, officer, employee or Consultant of the Company;

 

		(h)	"Fair Market Value" means, with respect to each vested RSU on the Vesting Date, the five-day VWAP per Share
on the Vesting Date on the Stock Exchange on which the majority of the public trading in the Shares has occurred over the immediately
preceding 30 days, or if it not possible to calculate such five-day VWAP, then the last posted closing price per Share on such
Stock Exchange;

 

    	 

    	 

    

 

		(i)	“Grant Date” means the date of grant of an RSU by the Board or such other date as may be specified by the
Board at the time of the authorization of the grant;

 

		(j)	“Insider” shall have the meaning ascribed to that term under the Securities Act and applicable Stock Exchange
policies;

 

		(k)	“Participant” means an Eligible Person to whom or which RSUs have been granted;

 

		(l)	“Plan” means this Restricted Share Unit Plan of the Company, as may be amended;

 

		(m)	“Plan Limit” means the maximum number of Shares that are issuable under the Plan in accordance with Section 4.2;

 

		(n)	“Regulatory Approval” means the approval of any Stock Exchange or any other regulatory authority or governmental
agency having lawful jurisdiction over the Plan and any RSUs granted hereunder.

 

		(o)	“Restricted Share Unit” or “RSU” means a unit credited by means of a bookkeeping entry
on the books of the Company to a Participant’s Account in accordance with the terms and conditions of the Plan;

 

		(p)	“RSU Agreement” means an agreement, substantially in the form of the agreement set out in Schedule B, between
the Company and a Participant setting out the terms of the RSUs granted to the Participant;

 

		(q)	“Securities Act” means the Securities Act (British Columbia), as amended from time to time;

 

		(r)	“Shares” means the common shares in the capital of the Company and each is a “Share”;

 

		(s)	“Share Compensation Arrangement” means this Plan, the Stock Option Plan and any share option plan, employee
stock purchase plan or any other compensation or incentive mechanism involving the issuance or potential issuance of Shares, including
a share purchase from treasury which is financially assisted by the Company by way of a loan, guarantee or otherwise;

 

		(t)	“Stock Exchanges” means any stock exchanges or markets on which the Shares are listed for trading at the
relevant time, including, if applicable, the TSX and the US Market;

 

		(u)	“Stock Option Plan” means the Amended & Restated Stock Option Plan of the Company, effective May 7,
2013, as adopted on April 26, 2007 and as amended on March 25, 2008 and May 5, 2009, and as further amended from time to time
in accordance with the provisions thereof;

 

    	2

    	 

    

  

		(v)	“Subsidiary” means any corporation that is a subsidiary of the Company as defined in the Securities Act;

 

		(w)	“TSX” means the Toronto Stock Exchange;

 

		(x)	“US Market” means the principal U.S. exchange or market quotation system, if any, on which the Shares
are, from time to time, traded, and includes the OTCQB marketplace;

 

		(y)	Vesting Date" means the date the RSUs of a Participant vest in accordance with Section 4.5 and the relevant RSU
Agreement; and

 

		(z)	“VWAP” means the volume weight average trading price of the Shares.

 

		1.3	Use of Gender and Number

 

Words importing the singular number only shall include the plural
and vice versa and words importing the masculine shall include the feminine.

 

		1.4	Governing Law

 

The Plan and all matters to which reference is made herein shall
be governed by and interpreted in accordance with the laws of the Province of British Columbia and the federal laws of Canada applicable
therein.

 

		2.	ESTABLISHMENT OF THE PLAN

 

		2.1	Effective Date

 

There is hereby established a Plan effective as of May 7, 2013.

 

		2.2	Eligibility

 

RSUs may be granted hereunder to Eligible Persons from time
to time by the Board, subject to the limitations set forth in herein.

 

		2.3	Compliance with Applicable Law

 

The Plan, the grant of RSUs under the Plan, and the Company’s
obligation to issue Shares following the vesting of RSUs, will be subject to Applicable Law. Shares issued to Participants pursuant
to the vesting of RSUs may be subject to limitation on sale or resale under Applicable Law.

 

Any inconsistencies between the Plan and Applicable Law, whether
due to inadvertence or to changes in such Applicable Law, will be resolved in favour of the latter.

 

    	3

    	 

    

  

		3.	ADMINISTRATION

  

		3.1	Use of Committees

 

The Board may delegate all or such portion of its powers under
this Plan as it may determine to a duly appointed committee of the Board or a senior officer of the Company, either indefinitely
or for such period of time as it may specify, and thereafter such committee or senior officer may exercise the powers and discharge
the duties of the Board in respect of the Plan so delegated to the same extent as the Board is hereby authorised so to do. If such
a committee or senior officer is appointed for this purpose, all references herein to the Board will be deemed to be references
to such committee or senior officer. Notwithstanding the foregoing, the Board will not be permitted to delegate its powers hereunder
to an executive officer to the extent that such powers relate to the participation in this Plan by senior officers and directors
of the Company.

 

		3.2	Authority of the Board

 

The Board shall be responsible for the general administration
of the Plan and the proper execution of its provisions, the interpretation of the Plan and the determination of all questions arising
hereunder. Subject to the limitations of the Plan, without limiting the generality of the foregoing, the Board has the power and
authority to:

 

		(a)	determine which Eligible Persons are to be granted RSUs and the number of RSUs to be issued to those Eligible Persons;

 

		(b)	determine the terms under which such RSUs are granted including, without limitation, those related to transferability, vesting
and forfeiture;

 

		(c)	prescribe the form of RSU Agreement with respect to a particular grant of RSUs;

 

		(d)	interpret the Plan and determine all questions arising out of the Plan and any RSUs granted pursuant to the Plan, which interpretations
and determinations will be conclusive and binding on the Company and all other affected persons;

 

		(e)	prescribe, amend and rescind rules and procedures relating to the Plan;

 

		(f)	subject to the provisions of the Plan and subject to such additional limitations and restrictions as the Board may impose,
delegate to one or more officers of the Company some or all of its authority under the Plan; and

 

		(g)	employ such legal counsel, independent auditors, third party service providers and consultants as it deems desirable for the
administration of the Plan and to rely upon any opinion or computation received therefrom.

 

The Board’s guidelines, rules, regulations, interpretations
and determinations shall be conclusive and binding upon the Company and all other persons, including, in particular and without
limitation, the Participants.

 

    	4

    	 

    

  

		4.	GRANT OF RSUs

 

		4.1	RSU Agreement

 

Upon the grant of RSUs, the Company will deliver to the Participant
an RSU Agreement dated as of the Grant Date, containing the terms of the RSUs and executed by the Company, and upon delivery to
the Company of the RSU Agreement executed by the Participant, such Participant will be a participant in the Plan and have the right
to receive Shares on the terms set out in the RSU Agreement and in the Plan. Subject to any specific variations approved by the
Board, all terms and conditions set out herein will be deemed to be incorporated into and form part of each RSU Agreement made
hereunder.

 

		4.2	Shares Reserved

 

The maximum number of Shares which may be made subject to issuance
under RSUs granted under this Plan shall be a number equal to 10% of the number of issued and outstanding Shares on a non-diluted
basis at any time, less the aggregate total of number of Shares that are, from time to time, subject to issuance under outstanding
rights that have been granted by the Company under any other Share Compensation Arrangement, including outstanding Share purchase
options issued by the Company under its Stock Option Plan, subject to adjustment under Section 6.1 (the “Plan Limit”).

 

For greater certainty:

 

		(a)	in the event a right to acquire Shares under this Plan or any other Share Compensation Arrangement expires unexercised or is
terminated by reason of dismissal of the holder of the right for cause or is otherwise lawfully cancelled prior to such right resulting
in the issuance of Shares, then the Shares that were issuable thereunder will be added back into the aggregate number of Shares
that may be, from time to time, made subject to issuance under a right granted under this Plan or any other Share Compensation
Arrangement; and

 

		(b)	if an optionee under the Company’s Stock Option Plan pays the exercise price (and/or any applicable withholding taxes)
of an option by surrendering previously owned Shares, or arranges to have the appropriate number of optioned shares otherwise issuable
upon exercise of an option withheld, then the Shares that would have been issued upon exercise of the option equal in number to
the surrendered and/or withheld Optioned Shares and Common Shares shall not count towards the maximum number of Shares that may
be made subject to issuance under this Plan or any other Share Compensation Arrangement.

 

		4.3	Limitations of RSUs to Insiders

 

Notwithstanding anything in this Plan to the contrary, unless
permitted by Regulatory Approval and, if required by Applicable Law, shareholder approval is obtained,

 

		(a)	the aggregate number of Shares that may be made subject
to issuance to Insiders pursuant to RSUs granted under the Plan and under any other Share Compensation Arrangement may not exceed
10.0% of the total number of Shares outstanding at the Grant Date (on a non-diluted basis); and

 

    	5

    	 

    

 

 

		(b)	the aggregate number of Shares that may be issued to
Insiders pursuant to RSUs granted under the Plan and under any other Share Compensation Arrangement, within any one year period,
may not exceed 10.0% of the total number of Shares outstanding at the end of such period (on a non-diluted basis).

 

		4.4	Limitations of RSUs to any One Person

 

Unless permitted by Regulatory Approval and, if required by
Applicable Law, shareholder approval is obtained, the aggregate number of Shares which may be reserved for issuance, from time
to time, to any one Eligible Person under the Plan and under any other Share Compensation Arrangement may not exceed 5.0% of the
total number of Shares outstanding at the Grant Date (on a non-diluted basis).

 

		4.5	Grant and Vesting of RSUs

 

		(a)	Subject to the terms of the Plan, the Board may from time to time grant to any Eligible Person the number of RSUs the Board
deems appropriate.

 

		(b)	RSUs shall consist of a grant of units, each of which represents the right of the Participant to receive one Share, subject
to the terms and conditions contained herein and such additional terms and conditions as the Board deems appropriate, consistent
with Applicable Law.

 

		(c)	The Board shall have the discretion to determine the Vesting Date for each RSU or any other vesting requirements (to be set
forth in the RSU Agreement).

 

		4.6	Third Party Offer

 

If an offer to purchase all of the outstanding Shares of the
Company is made by a third party, the Board may, in its sole discretion, to the extent permitted by Applicable Law and upon giving
each Participant written notice to that effect, require the acceleration of the vesting of RSUs. All determinations of the Board
under this Section will be final, binding and conclusive for all purposes.

 

		4.7	Change in Control

 

Upon the occurrence of a Change in Control, all outstanding
RSUs at that time shall automatically and irrevocably vest in full.

 

		4.8	Participant’s Account

 

The Company shall maintain an Account for each Participant and,
upon the grant of RSUs to a Participant, the Board shall cause the Participant’s Account to be credited with the number of
RSUs granted. Any RSU held by a Participant that fails to vest or that vests and a Share is delivered to a Participant in satisfaction
of such vested RSU shall be cancelled from the Participant’s Account.

 

    	6

    	 

    

  

		4.9	Vested RSUs

 

The issuance of Shares to a Participant by the Company in satisfaction
of vested RSUs will be made as soon as practicable after the Vesting Date.

 

		4.10	Withholding Tax

 

The Participant will be solely responsible for paying any applicable
withholding taxes arising from the grant or vesting of any RSU, and such payments must be made in a manner satisfactory to the
Company. In furtherance of the foregoing, the Company will have the right to withhold from any amounts otherwise due or to become
due from the Company to the Participant, an amount equal to any such taxes in order to ensure that such payments are remitted as
required.

 

Notwithstanding the foregoing, immediately upon delivery of
any Shares pursuant to vested RSUs, the Company shall have the right to require a Participant to sell a given number of Shares,
the net proceeds from which shall be not less than the amount required to cover any applicable withholding taxes and other source
deductions required by Applicable Law to be withheld by the Company in connection with the total Share issuances made by the Company
in satisfaction of the Participant’s vested RSUs.

 

		4.11	Termination of Employment

 

Unless otherwise determined by the Board, in its sole discretion,
or specified in the applicable RSU Agreement:

 

		(a)	upon the voluntary resignation or the termination for cause of a Participant, all of the Participant’s RSUs which remain
unvested in the Participant’s Account shall be forfeited without any entitlement to such Participant. If the Participant
has an employment or consulting agreement with the Company, the term “cause” shall have the meaning given to
it in the applicable Participant’s employment or consulting agreement.

 

		(b)	upon the termination without cause or death of a Participant, the Participant or the Participant’s beneficiary, as the
case may be, shall have a number of RSUs become vested in a linear manner equal to the sum for each grant of RSUs of the original
number of RSUs granted multiplied by the number of completed months of employment since the Grant Date divided by the number of
months required to achieve the full vesting of such grant of RSUs reduced by the actual number of RSUs that have previously become
vested in accordance with Section 4.5. Such vested RSUs shall be settled in accordance with Section 4.9.

 

		4.12	No Compensation for Cancelled RSUs

 

Section 4.11 applies regardless of whether the Participant
received compensation in respect of dismissal or was entitled to a period of notice of termination which would otherwise have permitted
a greater portion of the RSUs to vest with the Participant. Except as expressly permitted by the Board, all RSUs will cease to
vest as at the date upon which the Participant ceases to be an Eligible Person. Participants will not be entitled to any compensation
in respect of any RSU that has not vested.

 

    	7

    	 

    

  

		4.13	Non-Transferability of RSUs

 

The assignment or transfer of RSUs, or any other benefits under
the Plan, shall not be permitted other than by operation of law.

 

		5.	AMENDMENT

 

		5.1	Amendment and Termination of Plan

 

The Board reserves the right, in its absolute discretion, subject
to any necessary Regulatory Approvals, to at any time amend, suspend, terminate or discontinue the Plan, or revoke or alter any
action taken in connection therewith, except that no general amendment or suspension of the Plan will, without the written consent
of all holders of outstanding RSUs, impair the rights and entitlements of any such holder pursuant to then-outstanding RSUs unless
such amendment is the result of a change in the rules and policies of the TSX or the US Market, all without shareholder or Participant
approval, except that this discretionary authority will not extend to the directors the authority to increase the Plan Limit without
shareholder approval, excluding, where required by the policies of the TSX or the US Market, the votes attaching to shares held
by persons eligible to be Participants under the Plan. If the Plan is terminated, the provisions of the Plan and any administrative
guidelines, and other rules and regulations adopted by the Board and in force at the time of the Plan shall continue in effect
during such time as an RSU or any rights pursuant thereto remain outstanding.

 

		5.2	Powers of Board Survive

 

The full powers of the Board provided for in the Plan will survive
the termination of the Plan until all RSUs have been vested in full or have otherwise expired.

 

		5.3	Amendment of Outstanding RSUs

 

Subject to Regulatory Approval, the Board may, without shareholder
or Participant approval, amend or modify in any manner an outstanding RSU to the extent that the Board would have had the authority
to initially grant such award as so modified or amended, including without limitation, to change the date or dates as of which
an RSU vests, except that no amendment will, without the written consent of all affected Participants, alter or impair any RSU
previously granted under the Plan unless as a result of a change in Applicable Law or the Company’s status or classification
thereunder.

 

    	8

    	 

    

  

		6.	ADJUSTMENT TO SHARES

 

		6.1	Adjustments

 

Appropriate adjustments in the number of Shares subject to the
Plan, as regards RSUs granted or to be granted and the number of Shares subject to RSUs, will be conclusively determined by the
Board to give effect to adjustments in the number of Shares resulting from subdivisions, consolidations, substitutions, or reclassifications
of the Shares, the payment of stock dividends by the Company (other than dividends in the ordinary course) or other relevant changes
in the capital of the Company or from a proposed merger, amalgamation or other corporate arrangement or reorganization involving
the exchange or replacement of Shares of the Company for those in another corporation. Any dispute that arises at any time with
respect to any such adjustment will be conclusively determined by the Board, and any such determination will be binding on the
Company, the Participant and all other affected parties.

 

		6.2	Further Adjustments

 

Subject to Section 6.1 and Applicable Law, if, because
of a proposed merger, amalgamation or other corporate arrangement or reorganization, the exchange or replacement of Shares of the
Company for those in another corporation is imminent, the Board may, in a fair and equitable manner, determine the manner in which
all unvested RSUs rights granted under the Plan will be treated including, without limitation, requiring the acceleration of the
time for the vesting of such RSUs and the time for the fulfilment of any conditions or restrictions on such vesting. All determinations
of the Board under this Section will be final, binding and conclusive for all purposes.

 

		6.3	No Fractional Shares

 

No fractional Shares shall be issued upon the vesting of RSUs
granted under the Plan and, accordingly, if a Participant would become entitled to a fractional Share upon the vesting of an RSU,
such Participant shall only have the right to the next lowest whole number of Shares and no payment or other adjustment will be
made with respect to the fractional interest so disregarded, and any fractional interest in a Share that would otherwise be delivered
upon the vesting of RSUs will be cancelled.

 

		6.4	Limitations

 

The grant of RSUs under the Plan will in no way affect the Company’s
right to adjust, reclassify, reorganise or otherwise change its capital or business structure or to merge, amalgamate, reorganise,
consolidate, dissolve, liquidate or sell or transfer all or any part of its business or assets or engage in any like transaction.

 

		7.	GENERAL

 

		7.1	Unfunded Plan

 

The Plan is intended to constitute an “unfunded”
plan for incentive compensation. Nothing contained in the Plan (or in any RSU Agreement or other documentation related thereto)
shall give a Participant any rights that are greater than those of a general creditor of the Company.

 

    	9

    	 

    

  

		7.2	Compliance with Legislation

 

The Plan, the grant and vesting of RSUs hereunder and the Company’s
obligation to deliver Shares upon vesting of RSUs is subject to Applicable Law and to such Regulatory Approvals as may, in the
opinion of counsel to the Company, be required. Each RSU Agreement will contain such provisions as in the opinion of the Board
are required to ensure that no Shares are issued on the vesting of an RSU unless the issuance of such Shares will be exempt from
all registration and qualification requirements of securities laws of any jurisdiction and will be permitted under Applicable Law.
The Company shall not be obliged by any provision of the Plan or the grant of any RSU hereunder to issue or sell Shares in violation
of Applicable Law or any condition of any Regulatory Approval. No RSU shall be granted and no Shares issued or sold hereunder where
such grant, issue or sale would require registration of the Plan or of Shares under the securities laws of any jurisdiction and
any purported grant of any RSU or issue or sale of Shares hereunder in violation of this provision shall be void. In addition,
the Company shall have no obligation to issue any Shares pursuant to the Plan unless such Shares shall have been duly listed, upon
official notice of issuance, with the Stock Exchanges. Shares issued and sold to Participants pursuant to the vesting of RSUs may
be subject to limitations on sale or resale under Applicable Law. In particular, if required by Applicable Law, an RSU Agreement
may provide that shareholder approval to the grant of an RSU must be obtained prior to the vesting of the RSU or to the amendment
of an RSU Agreement.

 

		7.3	Non-Exclusivity

 

Nothing contained in the Plan will prevent the Board from maintaining
or adopting other or additional Share Compensation Arrangements, subject to obtaining prior Regulatory Approval and shareholder
approval, if required.

 

		7.4	Employment and Services

 

Nothing contained in the Plan or in any RSU Agreement will confer
upon or imply in favour of any Eligible Person or Participant any right with respect to office, employment or provision of services
with the Company, or interfere in any way with the right of the Company, to lawfully terminate the Eligible Person or Participant’s
office, employment or service at any time pursuant to the arrangements pertaining to same. Participation in the Plan by an Eligible
Person will be voluntary.

 

		7.5	Change of Status

 

A change in the status, office, position or duties of a Participant
from the status, office, position or duties held by such Participant on the date on which an RSU was granted to such Participant
will not result in a change in the terms of such RSU provided that such Participant remains an Eligible Person.

 

		7.6	No Representation or Warranty

 

The Company makes no representation or warranty as to the future
market value of Shares issued in accordance with the provisions of the Plan or to the effect of the Income Tax Act (Canada),
the United States Internal Revenue Code, or any other taxing statute governing the RSUs or the Shares issuable thereunder or the
tax consequences to a Participant. Compliance with Applicable Law as to the disclosure and resale obligations of each Participant
is the responsibility of such Participant and not the Company.

 

    	10

    	 

    

  

		7.7	Rights as a Shareholder

 

Nothing contained in the Plan nor in any RSU granted thereunder
shall be deemed to give any Participant any interest or title in or to any Shares of the Company or any rights as a shareholder
of the Company or any other legal or equitable right against the Company whatsoever other than with respect to Shares issued following
the vesting of RSUs.

 

		7.8	Discretion of Board

 

Subject to the Board’s powers of delegation provided for
under this Plan, the awarding of RSUs to any Eligible Person is a matter to be determined solely in the discretion of the Board.
The Plan shall not in any way fetter, limit, obligate, restrict or constrain the Board with regard to the allotment or issue of
any Shares or any other securities in the capital of the Company or any of its subsidiaries other than as specifically provided
for in the Plan.

 

		7.9	Notices

 

The form of all communication relating to the Plan shall be
in writing and delivered by recognised overnight courier, certified mail, fax or electronic mail to the proper address or, optionally,
to any individual personally. Except as otherwise provided in any RSU Agreement, all notices to the Company or the Board shall
be addressed to the Company at its principal business office in Denver, Colorado, Attn: Chief Financial Officer. All notices to
Participants, former Participants, beneficiaries or other persons acting for or on behalf of such persons which are not delivered
personally to an individual shall be addressed to such person by the Company or its designee at the last address for such person
maintained in the records of the Company.

 

    	11

    	 

    

  

SCHEDULE
A – CHANGE IN CONTROL

 

“Change in Control” shall be deemed to have
occurred in respect of the Company if:

 

		(a)	any individual, corporation, partnership, trust or association is or becomes the beneficial owner, directly or indirectly,
of voting securities of the Company representing fifty percent (50%) or more of the combined voting power, of the Company’s
then outstanding voting securities; or

 

		(b)	individuals who on a particular date constituted the Board of Directors (together with any new directors whose election by
the Board of Directors or whose nomination for election to the Board of Directors by the Company’s shareholders was approved
by a vote of at least two-thirds of the members of the Board of Directors then in office who either were members of the Board of
Directors on such date or whose election or nomination for election was previously so approved) cease for any reason to constitute
a majority of the members of the Board of Director of the Company then in office (a “Change in Board Majority”),
and a an individual, corporation, partnership, trust or association has become, at any time during the 120 days before the Change
in Board Majority, the ultimate beneficial owner of more than 33 1/3% of the total voting power of the capital stock of the Company
of any class or kind ordinarily having the power to vote for the election of directors of the Company on a fully diluted basis;
or

 

		(c)	there is consummated either (i) a merger, consolidation, reorganization, share exchange or issuance of securities involving
the Company (each a “Business Combination”) unless, immediately after such Business Combination, all or substantially
all of the individuals and entities who were the beneficial owners of voting capital of the Company immediately before the Business
Combination continue to beneficially own, directly or indirectly, more than 66 2/3% of the then outstanding voting capital of the
resulting or acquiring entity in such Business Combination (which shall include, without limitation, a corporation which as a result
of such transaction owns the Company or substantially all the Company’s assets either directly or indirectly) in substantially
the same proportions as their respective ownership in the outstanding voting capital immediately before such Business Combination;
or (ii) the sale or other disposition of any of the Company’s assets for gross proceeds equal to at least two-thirds
of the then appraised private enterprise value of the Company; or

 

		(d)	proceedings are commenced by the Company to seek its reorganization, arrangement or the composition or readjustment of its
debt or to obtain relief in respect of the Company, in each instance, under any law relating to bankruptcy, insolvency or reorganization;
or

 

		(e)	the Board of Directors of the Company adopts a resolution to the effect that, for the purposes of the Plan, a Change in Control
has occurred.

 

    	 

    	 

    

  

SCHEDULE
B – FORM OF RSU AGREEMENT

 

ATNA RESOURCES LTD

 

RESTRICTED SHARE UNIT PLAN – RSU
AGREEMENT

 

This RSU Agreement is entered into between Atna Resources Ltd.
(the “Company”) and the Eligible Person named below, pursuant to the Company’s Restricted Share Unit Plan
(the “Plan”), a copy of which is attached hereto, and confirms that:

 

		1.	on _____________________ (the “Grant Date”);

 

		2.	________________________(the “Eligible Person”);

 

		3.	was granted ___
                                         ___________Restricted Share Units (the “RSUs”), in accordance
                                         with the terms of the Plan;

 

		4.	the RSUs will vest as follows:

 

	 	Number of RSUs	 	Vesting On	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 
	 	 	 	 	 

 

all on the terms and subject to the conditions set
out in the Plan.

 

By signing this agreement, the Participant:

 

		(a)	acknowledges that he or she has read and understands
the Plan, agrees with the terms and conditions thereof which shall be deemed to be incorporated into and form part of this RSU
Agreement (subject to any specific variations contained in this RSU Agreement);

 

		(b)	acknowledges that he or she will be solely responsible
for paying any applicable withholding taxes arising from the grant or vesting of any RSU, as provided in Section 4.10 of
the Plan;

 

		(c)	where allowed by applicable legislation, agrees to assume
any employer’s social security contributions due upon the grant or vesting of any RSU;

 

		(d)	agrees that an RSU does not carry any voting rights;

 

		(e)	acknowledges that the value of the RSUs granted herein
is in US$ denomination, and such value is not guaranteed;

 

		(f)	recognises that the value of an RSU upon delivery is
subject to stock market fluctuations; and

 

    	 

    	 

    

 

 

		(g)	recognises that, at the sole discretion of the Company,
the Plan can be administered by a designee of the Company by virtue of paragraph 3.2(g) and any communication from or to
the designee shall be deemed to be from or to the Company.

 

IN WITNESS WHEREOF the Company and the Eligible Person
have executed this RSU Agreement as of ______________________.

 

ATNA RESOURCES LTD.

 

	By:	 	 
	Name:	 	 
	Title:	 	 
	 	 	 
	By:	 	 
	Name:	 	 
	Title:	 
	 	 
	 	 
	Name of Eligible Person	 
	 	 
	 	 
	Signature of Eligible Person	 

 

Note to Plan Participants

 

This RSU Agreement must be signed where indicated and returned
to the Company within 30 days of receipt. Failure to acknowledge acceptance of this grant will result in the cancellation of your
RSUs.

 

    	2

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