Document:

Exhibit 10.2

 

SUBSCRIPTION
AGREEMENT

 

This
SUBSCRIPTION AGREEMENT (this “Agreement”) is entered into as of June 25, 2018, among Hennessy Capital Acquisition
Corp. III, a Delaware corporation (the “Company”), Hennessy Capital Partners III LLC, a Delaware limited liability
company (“HCP”), and J.F. Lehman & Company, LLC, a Delaware limited liability company (“JFL”).

 

WHEREAS,
concurrently with the execution of this Agreement, the Company and JFL-NRC-SES Partners, LLC, a Delaware limited liability company
(the “Seller”), are entering into a Purchase Agreement, dated as of the date hereof (as may be amended or supplemented
from time to time, the “Purchase Agreement”), pursuant to which the Seller will sell to the Company, and the
Company will acquire from the Seller, all of the issued and outstanding membership interests of NRC Group Holdings, LLC, a Delaware
limited liability company (“NRC”), on the terms and subject to the conditions set forth therein (the “Acquisition”,
and the consummation of the Acquisition in accordance with the Purchase Agreement, the “Acquisition Closing”);
and

 

WHEREAS,
capitalized terms used and not otherwise defined herein are defined in the Purchase Agreement and shall have the meanings given
to such terms in the Purchase Agreement.

 

NOW,
THEREFORE, in consideration of the mutual covenants and agreements herein contained and for other good and valuable consideration,
the parties hereto agree as follows:

 

1. Subscription.
At any time prior to the close of business on the date that is ten Business Days prior to the scheduled Acquisition Closing date,
JFL or one or more of its affiliated investment funds may, by written notice to the Company and HCP, elect to:

 

(a) subscribe
for and purchase from the Company 300,000 shares of the Company’s 7.00% Series A Convertible Cumulative Preferred Stock,
par value $0.0001 per share (the “Preferred Shares”), for a per share price of $97.00; and

 

(b) (i)
subscribe for and purchase from the Company 1,951,220 shares of the Company’s common stock, par value $0.0001 per share
(the “Common Shares”), for a per share price of $10.25 (the “Base Per-Share Price”) and
(ii) acquire from HCP the applicable HCP Transfer Shares for no additional consideration. “HCP Transfer Shares”
means the number of shares as necessary for the Net Per-Share Price to equal $9.75. The “Net Per-Share Price”
means the Common Shares multiplied by the Base Per-Share Price and divided by the sum of the Common Shares and the HCP Transfer
Shares.

 

If
JFL or any of its affiliates elects to subscribe for the Preferred Shares and Common Shares pursuant to this Section 1,
the parties hereto will execute definitive agreements on terms and conditions that are consistent with this Agreement and that
are otherwise no less favorable to JFL than any agreements entered into by the Company or Sponsor in respect of the Preferred
Offering and the Common Offering.

 

     

     

    

 

2. Registration
Rights.

 

(a) At
the Acquisition Closing, the Company and JFL, or one or more of its affiliated investment funds, shall enter into a Registration
Rights Agreement (the “Registration Rights Agreement”), pursuant to which the Company will agree to (i) as
soon as reasonably practicable within sixty (60) days after the Acquisition Closing, but in no event later than ninety (90) days
following the Acquisition Closing, file a shelf registration statement to register the resale of the equity securities purchased
pursuant to this Agreement (including the Common Shares into which the Preferred Shares may be converted (the “Underlying
Common Shares”)) under the Securities Act of 1933, as amended (the “Securities Act”) and the rules
and regulations promulgated thereunder and applicable state securities laws, (ii) use its reasonable best efforts to cause such
registration statement (the “Registration Statement”) to become effective as promptly thereafter as practicable,
but in any event not later than one hundred eighty (180) days after the Acquisition Closing if the Company receives comments to
the Registration Statement from the staff of the U.S. Securities and Exchange Commission (“SEC Comments”) or
one hundred twenty (120) days after the Acquisition Closing if the Company does not receive SEC Comments and (iii) provide JFL,
or one or more of its affiliated investment funds, and certain other investors in the Company’s equity securities with customary
demand rights and piggyback registration rights. The Registration Rights Agreement shall also include such additional terms and
conditions as are customary and reasonably satisfactory to the Company and JFL, or one or more of its affiliated investment funds.

 

(b) None
of the equity securities purchased pursuant to this Agreement (including the Underlying Common Shares) may be directly or indirectly
transferred, disposed of or otherwise monetized in any manner whatsoever, except pursuant to a registration statement or in a
transaction that is exempt from the registration requirements of the Securities Act and applicable state securities laws.

 

3. Representations
and Warranties. Each party hereto hereby represents and warrants to the other parties as follows:

 

(a) Such
party has all necessary power and authority to execute and deliver this Agreement and to consummate the transactions contemplated
hereby. The execution and delivery of this Agreement and the consummation of the transactions contemplated hereby by such Party
have been duly authorized by all necessary actions on the part of such Party. This Agreement, assuming due authorization, execution
and delivery hereof by other parties hereto, constitutes a legal, valid and binding obligation of such party enforceable against
such party in accordance with its terms (except as such enforceability may be limited by bankruptcy, insolvency, fraudulent transfer,
reorganization, moratorium and other similar laws of general applicability relating to or affecting creditor’s rights, and
to general equitable principles).

 

(b) No
filing with, or notification to, any Governmental Authority and no consent, approval, authorization or permit of any other person
is necessary for the execution of this Agreement by such party and the consummation by such party of the transactions contemplated
hereby.

 

(c) None
of the execution and delivery of this Agreement by such party, the consummation by such party of the transactions contemplated
hereby or compliance by such party with any of the provisions hereof shall (i) conflict with or result in any breach of the organizational
documents of such party, (ii) result in, or give rise to, a violation or breach of or a default under any of the terms of any
material contract, understanding, agreement or other instrument or obligation to which such party is a party or by which such
party or any of its assets may be bound or (iii) violate any applicable order, writ, injunction, decree, law, statute, rule or
regulation of any Governmental Authority, except for any of the foregoing as would not reasonably be expected to impair such party’s
ability to perform its obligations under this Agreement in any material respect.

 

    2

     

    

 

4. Termination.
This Agreement shall terminate and be void and of no further force and effect, and all rights and obligations of the parties hereunder
shall terminate without any further liability on the part of any party in respect thereof, upon the earlier to occur of (a) such
date and time as the Purchase Agreement is terminated in accordance with its terms, (b) upon the mutual written agreement
of each of the parties hereto to terminate this Agreement or (c) the Termination Date; provided, that nothing herein
shall relieve any party from liability for any willful breach hereof prior to the time of termination, and each party shall be
entitled to any remedies at law or in equity to recover losses, liabilities or damages arising from such breach.

 

5. Notices.
All notices or other communications, including service of process, required or permitted hereunder shall be in writing and shall
be deemed given or delivered and received on the earliest of (a) the day when delivered, if delivered personally, (b) one Business
Day after deposit with a nationally-recognized courier or overnight service such as Federal Express (or upon any earlier receipt
confirmed in writing by such service), (c) five Business Days after mailing via U.S. certified mail, return receipt requested,
or (d) the date sent, with no mail undeliverable or other rejection notice, if sent by email, in each case addressed as follows:

 

If
to the Company or HCP, to:

 

Hennessy
Capital Acquisition Corp. III

3485 North Pines Way,

Suite 110

Wilson, Wyoming 83014

Attention: Daniel J. Hennessy and Kevin Charlton

Email: dhennessy@hennessycapllc.com and kcharlton@hennessycapllc.com

 

with
a copy (which shall not constitute notice) to:

 

Sidley
Austin LLP

One South Dearborn

Chicago, Illinois 60603

Attention: Jeffrey N. Smith and Dirk W. Andringa

Email: jnsmith@sidley.com and dandringa@sidley.com

 

and
to:

 

Ellenoff
Grossman & Schole LLP

1345 Avenue of the Americas, 11th Floor

New York, New York 10105

Attention: Stuart Neuhauser and Joshua N. Englard

Email: neuhauser@egsllp.com and jenglard@egsllp.com

 

    3

     

    

 

If
to JFL:

 

J.F.
Lehman & Company, LLC

110 East 59th Street, 27th Floor

New York, New York 10022

Attention: C. Alexander Harman, Glenn M. Shor and David L. Rattner

Email: cah@jflpartners.com, gms@jflpartners.com, and dlr@jflpartners.com

 

with
a copy (which shall not constitute notice) to:

 

Jones
Day

2727 North Harwood Street

Dallas, Texas 75201

Attention: Alain Dermarkar and Giles Elliott

Email: adermarkar@jonesday.com and gpelliott@jonesday.com

 

and
to such other address or addressee as any such Party has specified by prior written notice to the other Party in accordance with
this Section 5

 

6. Miscellaneous.

 

(a) No
party hereto may assign its rights or obligations hereunder without the express written consent of the other parties hereto, provided,
however, that JFL may assign all or a portion of its rights hereto to any investment affiliates of JFL.

 

(b) This
Agreement may not be modified, waived or terminated except by an instrument in writing, signed by the party against whom enforcement
of such modification, waiver, or termination is sought.

 

(c) This
Agreement constitutes the entire agreement and supersedes all other prior agreements, understandings, representations and warranties,
both written and oral, among the parties, with respect to the subject matter hereof.

 

(d) Except
as otherwise provided herein, this Agreement shall be binding upon, and inure to the benefit of the parties hereto and their heirs,
executors, administrators, successors, legal representatives and permitted assigns, and the agreements, representations, warranties,
covenants and acknowledgments contained herein shall be deemed to be made by, and be binding upon, such heirs, executors, administrators,
successors, legal representatives and permitted assigns.

 

(e) If
any provision of this Agreement shall be invalid, illegal or unenforceable, the validity, legality or enforceability of the remaining
provisions of this Agreement shall not in any way be affected or impaired thereby and shall continue in full force and effect.

 

(f) This
Agreement may be executed in two or more counterparts (including by electronic means), all of which shall be considered one and
the same agreement and shall become effective when signed by each of the parties and delivered to the other parties, it being
understood that all parties need not sign the same counterpart.

 

    4

     

    

 

(g) This
Agreement and any claim or cause of action hereunder based upon, arising out of or related to this Agreement (whether based on
law, in equity, in contract, in tort or any other theory) or the negotiation, execution, performance or enforcement of this Agreement,
shall be governed by and construed in accordance with the Laws of the State of Delaware, without giving effect to the principles
of conflicts of law thereof.

 

(h) THE
PARTIES HERETO IRREVOCABLY SUBMIT TO THE EXCLUSIVE JURISDICTION OF THE Court of Chancery of the State of Delaware, Delaware state
court and the United States District Court for the District of Delaware SOLELY IN RESPECT OF THE INTERPRETATION AND ENFORCEMENT
OF THE PROVISIONS OF THIS AGREEMENT AND THE DOCUMENTS REFERRED TO IN THIS AGREEMENT AND IN RESPECT OF THE TRANSACTIONS CONTEMPLATED
HEREBY, AND HEREBY WAIVE, AND AGREE NOT TO ASSERT, AS A DEFENSE IN ANY ACTION, SUIT OR PROCEEDING FOR INTERPRETATION OR ENFORCEMENT
HEREOF OR ANY SUCH DOCUMENT THAT IS NOT SUBJECT THERETO OR THAT SUCH ACTION, SUIT OR PROCEEDING MAY NOT BE BROUGHT OR IS NOT MAINTAINABLE
IN SAID COURTS OR THAT VENUE THEREOF MAY NOT BE APPROPRIATE OR THAT THIS AGREEMENT OR ANY SUCH DOCUMENT MAY NOT BE ENFORCED IN
OR BY SUCH COURTS, AND THE PARTIES HERETO IRREVOCABLY AGREE THAT ALL CLAIMS WITH RESPECT TO SUCH ACTION, SUIT OR PROCEEDING SHALL
BE HEARD AND DETERMINED BY SUCH A DELAWARE STATE OR FEDERAL COURT. THE PARTIES HEREBY CONSENT TO AND GRANT ANY SUCH COURT JURISDICTION
OVER THE PERSON OF SUCH PARTIES AND OVER THE SUBJECT MATTER OF SUCH DISPUTE AND AGREE THAT MAILING OF PROCESS OR OTHER PAPERS
IN CONNECTION WITH SUCH ACTION, SUIT OR PROCEEDING IN THE MANNER PROVIDED IN SECTION 5 OR IN SUCH OTHER MANNER AS MAY BE
PERMITTED BY LAW SHALL BE VALID AND SUFFICIENT SERVICE THEREOF. EACH PARTY ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH
MAY ARISE UNDER THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES,
AND THEREFORE EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN
RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED
BY THIS AGREEMENT. EACH PARTY CERTIFIES AND ACKNOWLEDGES THAT (I) NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY
HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING
WAIVER; (II) SUCH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THE FOREGOING WAIVER; (III) SUCH PARTY MAKES
THE FOREGOING WAIVER VOLUNTARILY AND (IV) SUCH PARTY HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS,
THE MUTUAL WAIVER AND CERTIFICATIONS IN THIS SECTION 6(h).

 

    5

     

    

 

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

 

	 	HENNESSY CAPITAL ACQUISITION CORP. III
	 	 	 
	 	By:	/s/
    Daniel J. Hennessy
	 	Name:	Daniel
    J. Hennessy
	 	Title:	Chairman
    of the Board and
	 	 	Chief
Executive Officer
	 	 	 
	 	HENNESSY
    CAPITAL PARTNERS III LLC
		a
Delaware limited liability company
	 	By:
    Hennessy Capital LLC, its managing member
	 	 	 
	 	By:	/s/
    Daniel J. Hennessy
	 	Name:	Daniel
    J. Hennessy
	 	Title:	Managing
    Member
	 	 	 
	 	J.F.
    LEHMAN & COMPANY, LLC
	 	 	 
	 	By:	/s/
    C. Alexander Harman
	 	Name:	C.
    Alexander Harman
	 	Title:	Managing
    Member

 

 

6Exhibit 10.3

 

VOTING AND SUPPORT AGREEMENT

 

This VOTING AND SUPPORT
AGREEMENT (this “Agreement”) is entered into as of June 25, 2018, by and among JFL-NRC-SES Partners, LLC, a
Delaware limited liability company (the “Seller”), Hennessy Capital Partners III LLC, a Delaware limited liability
company (“Hennessy Capital Partners III”), and the stockholders of Purchaser (as defined below) set forth on
Schedule I hereto (such individuals together with Hennessy Capital Partners III, each a “Stockholder”, and collectively,
the “Stockholders”). The Seller and the Stockholders are sometimes referred to herein as a “Party”
and collectively as the “Parties”.

 

W I T N E S S E T H :

 

WHEREAS, as of the
date hereof, each of the Stockholders “beneficially owns” (as such term is defined in Rule 13d-3 promulgated
under the Exchange Act) and is entitled to dispose of (or to direct the disposition of) and to vote (or to direct the voting of)
the number of shares of common stock, par value $0.0001 per share (the “Common Stock”), of Hennessy Capital
Acquisition Corp. III, a Delaware corporation (“Purchaser”), set forth opposite such Stockholder’s name
on Schedule I hereto (such shares of Common Stock, together with any other shares of Common Stock the voting power over which is
acquired by Stockholder during the period from the date hereof through the date on which this Agreement terminates in accordance
with Section 6.1 hereof (such period, the “Voting Period”), including any and all Common Stock acquired by such
Stockholder during the Voting Period pursuant to the exercise, exchange or conversion of, or other transaction involving, any and
all warrants issued to such Stockholder in a private placement that occurred prior to Purchaser’s initial public offering
(the “Warrants”) and all Sponsor Forfeited Shares, are collectively referred to herein as the “Subject
Shares”);

 

WHEREAS, the Seller
and Purchaser propose to enter into a purchase agreement, dated as of the date hereof (as the same may be amended from time to
time, the “Purchase Agreement”), pursuant to which, upon the terms and subject to the conditions set forth therein,
Purchaser agrees to acquire from Seller, and Seller agrees to sell to Purchaser, all of the issued and outstanding membership interests
of NRC Group Holdings, LLC, a Delaware limited liability company (the “Company”) (such transaction, together
with the other transactions contemplated by the Purchase Agreement, the “Transactions”); and

 

WHEREAS, as a condition
to the willingness of the Seller to enter into the Purchase Agreement, and as an inducement and in consideration therefor, the
Stockholders are executing this Agreement.

 

NOW, THEREFORE, in
consideration of the foregoing and the mutual premises, representations, warranties, covenants and agreements contained herein,
the Parties, intending to be legally bound, hereby agree as follows:

 

ARTICLE I

DEFINITIONS

 

Section 1.01 Capitalized
Terms. For purposes of this Agreement, capitalized terms used and not defined herein shall have the respective meanings ascribed
to them in the Purchase Agreement.

 

    

    

    

 

ARTICLE II

VOTING AGREEMENT

 

Section 2.1 Agreement
to Vote the Subject Shares. Each Stockholder hereby unconditionally and irrevocably agrees that, during the Voting Period,
at any duly called meeting of the stockholders of Purchaser (or any adjournment or postponement thereof), and in any action by
written consent of the stockholders of Purchaser requested by Purchaser’s board of directors or undertaken as contemplated
by the Transactions, such Stockholder shall, if a meeting is held, appear at the meeting, in person or by proxy, or otherwise cause
its Subject Shares to be counted as present thereat for purposes of establishing a quorum, and it shall vote or consent (or cause
to be voted or consented), in person or by proxy, all of its Subject Shares (a) in favor of the approval of the Purchase Agreement
and approval of the Transactions (and any actions required in furtherance thereof), (b) against any action, proposal, transaction
or agreement that would result in a breach in any respect of any representation, warranty, covenant, obligation or agreement of
Purchaser contained in the Purchase Agreement, (c) in favor of the proposals set forth in Purchaser’s proxy statement
(including in favor of the election of the Seller’s designees to the board of directors of Purchaser set forth on Schedule
II hereto and in favor of each proposal to amend the Purchaser’s Amended and Restated Certificate of Incorporation consistent
with Exhibit B to the Purchase Agreement), to be filed by Purchaser with the SEC relating to the Offer and the Transactions (including
any proxy supplement thereto, the “Proxy Statement”), (d) for any proposal to adjourn or postpone the Special
Meeting to a later date if there are not sufficient votes for approval of the Purchase Agreement and the other proposals related
thereto as set forth in the Proxy Statement on the date on which such meeting is held and (e) except as set forth in
the Proxy Statement, against the following actions or proposals: (i) any Purchaser Acquisition Transaction or any proposal
in opposition to approval of the Purchase Agreement or in competition with or materially inconsistent with the Purchase Agreement;
and (ii) (A)  any change in the present capitalization of Purchaser or any amendment of the certificate of incorporation
or bylaws of Purchaser, except to the extent expressly contemplated by the Purchase Agreement, (B) any liquidation, dissolution
or other change in Purchaser’s corporate structure or business, (C) any action, proposal, transaction or agreement that would
result in a breach in any material respect of any covenant, representation or warranty or other obligation or agreement of a Stockholder
under this Agreement, or (D) any other action or proposal involving Purchaser or any of its subsidiaries that is intended,
or would reasonably be expected, to prevent, impede, interfere with, delay, postpone or adversely affect the Transactions or would
reasonably be expected to result in any of Purchaser’s closing conditions or obligations under the Purchase Agreement not
being satisfied. Each of the Stockholders agrees not to, and shall cause its Affiliates not to, enter into any agreement, commitment
or arrangement with any Person, the effect of which would be inconsistent with or violative of the provisions and agreements contained
in this Article II.

 

Section 2.2 No
Obligation as Director or Officer. Nothing in this Agreement shall be construed to impose any obligation or limitation on votes
or actions taken by any director, officer, employee, agent or other representative (collectively, “Representatives”)
of any Stockholder or by any Stockholder that is a natural person, in each case, in his or her capacity as a director or officer
of Purchaser.

 

    	 	2	 

    

    

 

ARTICLE III

COVENANTS

 

Section 3.1 Generally.

 

(a) Each
of the Stockholders agrees that during the Voting Period it shall not, and shall cause its Affiliates not to, without the Seller’s
prior written consent (except to a permitted transferee as set forth in Section 7(c) in that certain letter agreement, dated
June 22, 2017, between Purchaser and such Stockholder (the “Insider Letter”) who agrees in writing to be
bound by the terms of this Agreement): (i) offer for sale, sell (including short sales), transfer, tender, pledge, encumber,
assign or otherwise dispose of (including by gift) (collectively, a “Transfer”), or enter into any contract,
option, derivative, hedging or other agreement or arrangement or understanding (including any profit-sharing arrangement) with
respect to, or consent to, a Transfer of, any or all of the Subject Shares; (ii) grant any proxies or powers of attorney with
respect to any or all of the Subject Shares; (iii) permit to exist any lien of any nature whatsoever with respect to any or
all of the Subject Shares; or (iv) take any action that would have the effect of preventing, impeding, interfering with or
adversely affecting such Stockholder’s ability to perform its obligations under this Agreement.

 

(b) In
the event of a stock dividend or distribution, or any change in the Common Stock or Warrants by reason of any stock dividend or
distribution, split-up, recapitalization, combination, conversion, exchange of shares or the like, the term “Subject Shares”
shall be deemed to refer to and include the Subject Shares as well as all such stock dividends and distributions and any securities
into which or for which any or all of the Subject Shares or Warrants may be changed or exchanged or which are received in such
transaction. Each of the Stockholders agrees, while this Agreement is in effect, to notify the Seller promptly in writing (including
by e-mail) of the number of any additional shares of Common Stock acquired by such Stockholder, if any, after the date hereof.

 

(c) Each
of the Stockholders agrees, while this Agreement is in effect, not to take or agree or commit to take any action that would make
any representation and warranty of such Stockholder contained in this Agreement inaccurate in any material respect. Each of the
Stockholders further agrees that it shall use its reasonable best efforts to cooperate with the Seller to effect the transactions
contemplated hereby and the Transactions.

 

    	 	3	 

    

    

 

Section 3.2 Standstill
Obligations of the Stockholders. Each of the Stockholders covenants and agrees with the Seller that, during the Voting Period:

 

(a) None
of the Stockholders shall, nor shall any Stockholder act in concert with any person to make, or in any manner participate in, directly
or indirectly, a “solicitation” of “proxies” or consents (as such terms are used in the proxy solicitation
rules of the SEC) or powers of attorney or similar rights to vote, or seek to advise or influence any person with respect to the
voting of, any shares of Common Stock in connection with any vote or other action with respect to a business combination transaction,
other than to recommend that stockholders of Purchaser vote in favor of approval of the Purchase Agreement and in favor of approval
of the other proposals set forth in the Proxy Statement (including the election of the directors set forth on Schedule II hereto)
(and any actions required in furtherance thereof and otherwise as expressly provided by Article II of this Agreement).

 

(b) None
of the Stockholders shall, nor shall any Stockholder act in concert with any person to, deposit any of the Subject Shares in a
voting trust or subject any of the Subject Shares to any arrangement or agreement with any person with respect to the voting of
the Subject Shares, except as provided by Article II of this Agreement.

 

Section 3.3 Stop
Transfers. Each of the Stockholders agrees with, and covenants to, the Seller that such Stockholder shall not request that
Purchaser register the transfer (book-entry or otherwise) of any certificate or uncertificated interest representing any Subject
Shares during the term of this Agreement without the prior written consent of the Seller other than pursuant to a transfer permitted
by Section 3.1(a) of this Agreement.

 

Section 3.4 Consent
to Disclosure. Each Stockholder hereby consents to the publication and disclosure in the Proxy Statement (and, as and to the
extent otherwise required by Federal Securities Laws or the SEC or any other securities authorities, any other documents or communications
provided by Purchaser or Seller to any Governmental Authority or to securityholders of Purchaser) of such Stockholder’s identity
and beneficial ownership of Subject Shares and the nature of such Stockholder’s commitments, arrangements and understandings
under and relating to this Agreement and, if deemed appropriate by Purchaser or Seller, a copy of this Agreement. Each Stockholder
will promptly provide any information reasonably requested by Purchaser or Seller for any regulatory application or filing made
or approval sought in connection with the Transactions (including filings with the SEC).

 

Section 3.5 Notices
of Certain Events. Each Party shall notify the other Parties hereto of any development occurring after the date hereof that
causes, or that would reasonably be expected to cause, any breach in any material respect of any of the representations and warranties
of such Party set forth in this Agreement.

 

ARTICLE IV

REPRESENTATIONS AND WARRANTIES OF STOCKHOLDERS

 

Each of the Stockholders hereby represents
and warrants, severally but not jointly, to the Seller as follows:

 

Section 4.1 Binding
Agreement. Such Stockholder (a) if a natural person, is of legal age to execute this Agreement and is legally competent
to do so, and (b) if not a natural person, (i) is a corporation, limited liability company or partnership duly organized
and validly existing under the laws of the jurisdiction of its organization and (ii) has all necessary power and authority
to execute and deliver this Agreement and to consummate the transactions contemplated hereby. The execution and delivery of this
Agreement and the consummation of the transactions contemplated hereby by such Stockholder has been duly authorized by all necessary
corporate, limited liability or partnership action on the part of such Stockholder, as applicable. This Agreement, assuming due
authorization, execution and delivery hereof by the Seller, constitutes a legal, valid and binding obligation of such Stockholder,
enforceable against such Stockholder in accordance with its terms (except as such enforceability may be limited by bankruptcy,
insolvency, fraudulent transfer, reorganization, moratorium and other similar laws of general applicability relating to or affecting
creditor’s rights, and to general equitable principles).

 

    	 	4	 

    

    

 

Section 4.2 Ownership
of Shares. Schedule I hereto sets forth opposite such Stockholder’s name the number of all of the shares of Common Stock
and the number of all of the Warrants over which such Stockholder has beneficial ownership as of the date hereof. As of the date
hereof, such Stockholder is the lawful owner of the shares of Common Stock and Warrants denoted as being owned by such Stockholder
on Schedule I and has the sole power to vote or cause to be voted such shares of Common Stock and, assuming the exercise of the
Warrants, the shares of Common Stock underlying such Warrants. Such Stockholder has good and valid title to the Common Stock and
Warrants denoted as being owned by such Stockholder on Schedule I, free and clear of any and all pledges, mortgages, encumbrances,
charges, proxies, voting agreements, Liens, adverse claims, options, security interests and demands of any nature or kind whatsoever,
other than those created by this Agreement, those imposed by the Insider Letter and those imposed by applicable law, including
federal and state securities laws. There are no claims for finder’s fees or brokerage commission or other like payments in
connection with this Agreement or the transactions contemplated hereby payable by such Stockholder pursuant to arrangements made
by such Stockholder. Except for the shares of Common Stock and Warrants denoted on Schedule I, as of the date of this Agreement,
such Stockholder is not a beneficial owner or record holder of any (i) equity securities of Purchaser, (ii) securities of Purchaser
having the right to vote on any matters on which the holders of equity securities of Purchaser may vote or which are convertible
into or exchangeable for, at any time, equity securities of Purchaser, or (iii) options or other rights to acquire from Purchaser
any equity securities or securities convertible into or exchangeable for equity securities of Purchaser.

 

Section 4.3 No Conflicts.

 

(a) No
filing with, or notification to, any Governmental Authority, and no consent, approval, authorization or permit of any other person
is necessary for the execution of this Agreement by such Stockholder and the consummation by such Stockholder of the transactions
contemplated hereby. If such Stockholder is a natural person, no consent of such Stockholder’s spouse is necessary under
any “community property” or other laws in order for such Stockholder to enter into and perform its obligations under
this Agreement.

 

(b) None
of the execution and delivery of this Agreement by such Stockholder, the consummation by such Stockholder of the transactions contemplated
hereby or compliance by such Stockholder with any of the provisions hereof shall (i) conflict with or result in any breach
of the organizational documents of such Stockholder, as applicable, (ii) result in, or give rise to, a violation or breach
of or a default under any of the terms of any material contract, understanding, agreement or other instrument or obligation to
which such Stockholder is a party or by which such Stockholder or any of such Stockholder’s Subject Shares or assets may
be bound, or (iii) violate any applicable order, writ, injunction, decree, law, statute, rule or regulation of any Governmental
Authority, except for any of the foregoing in clauses (i) through (iii) as would not reasonably be expected to impair
such Stockholder’s ability to perform its obligations under this Agreement in any material respect.

 

    	 	5	 

    

    

 

Section 4.4 Reliance
by the Seller. Such Stockholder understands and acknowledges that the Seller is entering into the Purchase Agreement in reliance
upon the execution and delivery of this Agreement by the Stockholders.

 

Section 4.5 No
Inconsistent Agreements. Such Stockholder hereby covenants and agrees that, except for this Agreement, such Stockholder (a)
has not entered into, nor will enter into at any time while this Agreement remains in effect, any voting agreement or voting trust
with respect to such Stockholder’s Subject Shares inconsistent with such Stockholder’s obligations pursuant to this
Agreement, (b) has not granted, nor will grant at any time while this Agreement remains in effect, a proxy, a consent or power
of attorney with respect to such Stockholder’s Subject Shares and (c) has not entered into any agreement or knowingly taken
any action (nor will enter into any agreement or knowingly take any action) that would make any representation or warranty of such
Stockholder contained herein untrue or incorrect in any material respect or have the effect of preventing such Stockholder from
performing any of its material obligations under this Agreement.

 

Section 4.6 Stockholder
Has Adequate Information. Such Stockholder is a sophisticated stockholder and has adequate information concerning the business
and financial condition of Purchaser and the Company to make an informed decision regarding the transactions contemplated by the
Purchase Agreement and has independently and without reliance upon Purchaser or the Seller and based on such information as such
Stockholder has deemed appropriate, made its own analysis and decision to enter into this Agreement. Such Stockholder acknowledges
that the Seller has not made and does not make any representation or warranty, whether express or implied, of any kind or character
except as expressly set forth in this Agreement. Such Stockholder acknowledges that the agreements contained herein with respect
to the Subject Shares held by such Stockholder are irrevocable.

 

ARTICLE V

REPRESENTATIONS AND WARRANTIES OF THE
SELLER

 

The Seller hereby
represents and warrants to the Stockholders as follows:

 

Section 5.1 Binding
Agreement. The Seller is a limited liability company, duly organized and validly existing under the laws of the State of Delaware.
The Seller has all necessary power and authority to execute and deliver this Agreement and to consummate the transactions contemplated
hereby. The execution and delivery of this Agreement and the consummation of the transactions contemplated hereby by the Seller
have been duly authorized by all necessary actions on the part of the Seller. This Agreement, assuming due authorization, execution
and delivery hereof by the Stockholders, constitutes a legal, valid and binding obligation of the Seller enforceable against the
Seller in accordance with its terms (except as such enforceability may be limited by bankruptcy, insolvency, fraudulent transfer,
reorganization, moratorium and other similar laws of general applicability relating to or affecting creditor’s rights, and
to general equitable principles).

 

    	 	6	 

    

    

 

Section 5.2 No Conflicts.

 

(a) No
filing with, or notification to, any Governmental Authority, and no consent, approval, authorization or permit of any other person
is necessary for the execution of this Agreement by the Seller and the consummation by the Seller of the transactions contemplated
hereby.

 

(b) None
of the execution and delivery of this Agreement by the Seller, the consummation by the Seller of the transactions contemplated
hereby or compliance by the Seller with any of the provisions hereof shall (i) conflict with or result in any breach of the organizational
documents of the Seller, (ii) result in, or give rise to, a violation or breach of or a default under any of the terms of any material
contract, understanding, agreement or other instrument or obligation to which the Seller is a party or by which the Seller or any
of its assets may be bound, or (iii) violate any applicable order, writ, injunction, decree, law, statute, rule or regulation of
any Governmental Authority, except for any of the foregoing as would not reasonably be expected to impair the Seller’s ability
to perform its obligations under this Agreement in any material respect.

 

ARTICLE VI

TERMINATION

 

Section 6.1 Termination.
This Agreement shall automatically terminate, without any further action by the Parties, and none of the Seller or the Stockholders
shall have any rights or obligations hereunder, and this Agreement shall become null and void and have no effect upon the earliest
to occur of: (a) as to each Stockholder, the mutual written consent of the Seller and such Stockholder, (b) the Closing
Date (following the performance of the obligations of the Parties required to be performed on the Closing Date) and (c) the
date of termination of the Purchase Agreement in accordance with its terms. The termination of this Agreement shall not prevent
any Party hereunder from seeking any remedies (at law or in equity) against another Party or relieve such Party from liability
for such Party’s breach of any terms of this Agreement. Notwithstanding anything to the contrary herein, the provisions of
Article VI shall survive the termination of this Agreement.

 

ARTICLE VII

MISCELLANEOUS

 

Section 7.1 Further
Assurances. From time to time, at the other Party’s request and without further consideration, each Party shall execute
and deliver such additional documents and take all such further action as may be reasonably necessary or desirable to consummate
the transactions contemplated by this Agreement.

 

Section 7.2 Fees
and Expenses. Each of the Parties shall be responsible for its own fees and expenses (including, without limitation, the fees
and expenses of investment bankers, accountants and counsel) in connection with the entering into of this Agreement and the consummation
of the transactions contemplated hereby.

 

    	 	7	 

    

    

 

Section 7.3 No
Ownership Interest. Nothing contained in this Agreement shall be deemed to vest in the Seller any direct or indirect ownership
or incidence of ownership of or with respect to any Subject Shares.

 

Section 7.4 Amendments,
Waivers, etc. This Agreement may not be amended, changed, supplemented, waived or otherwise modified, except upon the execution
and delivery of a written agreement executed by each of the Parties. The failure of any Party to exercise any right, power or remedy
provided under this Agreement or otherwise available in respect hereof at law or in equity, or to insist upon compliance by any
other Party with its obligations hereunder, and any custom or practice of the Parties at variance with the terms hereof shall not
constitute a waiver by such Party of its right to exercise any such or other right, power or remedy or to demand such compliance.

 

Section 7.5 Notices.
All notices or other communications, including service of process, required or permitted hereunder shall be in writing and shall
be deemed given or delivered and received on the earliest of (a) the day when delivered, if delivered personally, (b) one Business
Day after deposit with a nationally-recognized courier or overnight service such as Federal Express (or upon any earlier receipt
confirmed in writing by such service), (c) five Business Days after mailing via U.S. certified mail, return receipt requested,
or (d) the date, with no mail undeliverable or other rejection notice, if sent by email, in each case addressed as follows:

 

	 	(a)	If to the Seller:

 

JFL-NRC-SES Partners, LLC

c/o J.F. Lehman & Company

110 East 59th Street, 27th Floor

New York, New York 10022

Attention: C. Alexander Harman, Glenn M. Shor and David
L. Rattner

Email: cah@jflpartners.com, gms@jflpartners.com, and
dlr@jflpartners.com

 

with a copy (which shall not constitute notice) to:

 

Jones Day

2727 North Harwood Street

Dallas, Texas 75201

Attention: Alain Dermarkar and Giles Elliott

Email: adermarkar@jonesday.com and gpelliott@jonesday.com

 

	 	(b)	If to any of the Stockholders:

 

c/o Hennessy Capital Partners III LLC

3485 N. Pines Way, Suite 10

Wilson, Wyoming 83104

Attention: Daniel J. Hennessy, Kevin Charlton and Nicholas
Petruska

Email: dhennessy@hennessycapllc.com, kcharlton@hennessycapllc.com
and npetruska@hennessycapllc.com

 

    	 	8	 

    

    

 

with copies (which shall not constitute notice) to:

 

Sidley Austin LLP

One South Dearborn

Chicago, Illinois 60603

Attention: Jeffrey N. Smith and Dirk W. Andringa

Facsimile: (312) 853-7036

Email: jnsmith@sidley.com and dandringa@sidley.com

 

and to:

 

Ellenoff Grossman & Schole LLP

1345 Avenue of the Americas

New York, New York 10105

Attention: Stuart Neuhauser and Joshua N. Englard

Facsimile: (212) 370-7889

Email: sneuhauser@egsllp.com and jenglard@egsllp.com

   

Section 7.6 Headings.
The headings contained in this Agreement are for reference purposes only and shall not affect in any way the meaning or interpretation
of this Agreement.

 

Section 7.7 Severability.
If any term or other provision of this Agreement is invalid, illegal or incapable of being enforced by any rule of law or public
policy, all other conditions and provisions of this Agreement shall nevertheless remain in full force and effect so long as the
economic or legal substance of the transactions contemplated hereby is not affected in any manner adverse to any Party. Upon such
determination that any term or other provision is invalid, illegal or incapable of being enforced, the Parties shall negotiate
in good faith to modify this Agreement so as to effect the original intent of the Parties as closely as possible in an acceptable
manner to the end that the transactions contemplated hereby are fulfilled to the fullest extent possible.

 

Section 7.8 Entire
Agreement; Assignment. This Agreement (together with the Purchase Agreement, to the extent referred to herein, and the schedules
hereto) constitutes the entire agreement among the Parties with respect to the subject matter hereof and supersedes all prior agreements
and undertakings, both written and oral, among the Parties, or any of them, with respect to the subject matter hereof. Except for
transfers permitted by Section 3.1, this Agreement shall not be assigned by operation of law or otherwise without the prior
written consent of the other Party.

 

Section 7.9 Certificates.
Promptly following the date of this Agreement, each Stockholder shall advise Purchaser’s transfer agent in writing that such
Stockholder’s Subject Shares are subject to the restrictions set forth herein and, in connection therewith, provide Purchaser’s
transfer agent in writing with such information as is reasonable to ensure compliance with such restrictions.

 

Section 7.10 Parties
in Interest. This Agreement shall be binding upon and inure solely to the benefit of each Party, and nothing in this Agreement,
express or implied, is intended to or shall confer upon any other person any rights, benefits or remedies of any nature whatsoever
under or by reason of this Agreement.

 

    	 	9	 

    

    

 

Section 7.11 Interpretation.
The references herein to Sections, Articles and Schedules, unless otherwise indicated, are references to Sections and Articles
of and Schedules to this Agreement. Words used herein, regardless of the number and gender specifically used, shall be deemed and
construed to include any other number, singular or plural, and any other gender, masculine, feminine or neuter, as the context
requires. Any reference to a Law shall include any amendment thereof or any successor thereto and any rules and regulations promulgated
thereunder. Any reference to any Contract is a reference to it as amended, modified and supplemented from time to time. In this
Agreement, except to the extent that the context otherwise requires: (a) “days” means calendar days unless otherwise
indicated; (b) whenever the words “include,” “includes” or “including” are used in this Agreement,
they are deemed to be followed by the words “without limitation”; (c) the words “hereof,” “herein”
and “hereunder” and words of similar import, when used in this Agreement, refer to this Agreement as a whole and not
to any particular provision of this Agreement; and (d) references to a Person are also to its permitted successors and assigns.
This Agreement shall be construed without regard to any presumption or rule requiring construction or interpretation against the
Party drafting or causing any instrument to be drafted.

 

Section 7.12 Governing
Law. This Agreement shall be governed by, and construed in accordance with, the internal Laws of the State of Delaware (without
reference to its choice of Law rules).

 

Section 7.13 Specific
Performance; Jurisdiction. The Parties agree that irreparable damage would occur in the event that any of the provisions of
this Agreement were not performed in accordance with their specific terms or were otherwise breached. It is accordingly agreed
that the Parties shall be entitled to an injunction or injunctions to prevent breaches of this Agreement and to enforce specifically
the terms and provisions of this Agreement in the Court of Chancery of the State of Delaware (or, if the Court of Chancery of the
State of Delaware lacks jurisdiction, then in the applicable Delaware state court) or, if under applicable Law exclusive jurisdiction
over such matter is vested in the federal courts, any court of the United States located in the State of Delaware (or any court
in which appeal from such courts may be taken), this being in addition to any other remedy to which such Party is entitled at law
or in equity. In addition, each of the Parties (a) consents to submit itself to the personal jurisdiction of the Court of
Chancery of the State of Delaware or any court of the United States located in the State of Delaware (or any court in which appeal
from such courts may be taken) in the event any dispute arises out of this Agreement or any of the transactions contemplated by
this Agreement, (b) agrees that it will not attempt to deny or defeat such personal jurisdiction by motion or other request
for leave from any such court, (c) agrees that it will not bring any Action relating to this Agreement or any of the transactions
contemplated by this Agreement in any court other than the Court of Chancery of the State of Delaware or, if under applicable law
exclusive jurisdiction over such matter is vested in the federal courts, any court of the United States located in the State of
Delaware (or any court in which appeal from such courts may be taken) and (d) consents to service being made through the notice
procedures set forth in Section 7.5. Each of the Stockholders and the Seller hereby agrees that service of any process, summons,
notice or document by U.S. registered mail to the respective addresses set forth in Section 7.5 shall be effective service of process
for any proceeding in connection with this Agreement or the transactions contemplated hereby.

 

    	 	10	 

    

    

 

Section 7.14 Waiver
of Jury Trial. EACH OF THE PARTIES HEREBY WAIVES TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW ANY RIGHT IT MAY HAVE TO
A TRIAL BY JURY WITH RESPECT TO ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT
OR THE TRANSACTIONS CONTEMPLATED HEREBY. EACH OF THE PARTIES (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY
OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE
THAT FOREGOING WAIVER AND (B) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY,
AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 7.14.

 

Section 7.15 Execution
in Counterparts. This Agreement may be executed in counterparts, each of which shall be considered an original instrument,
but all of which shall be considered one and the same agreement, and shall become binding when one or more counterparts have been
signed by each of the Parties and delivered to the other Party. A signed copy of this Agreement delivered by facsimile, email or
other means of electronic transmission shall be deemed to have the same legal effect as delivery of an original signed copy of
this Agreement.

 

Section 7.16 No
Partnership, Agency or Joint Venture. This Agreement is intended to create a contractual relationship between the Stockholders,
on the one hand, and the Seller, on the other hand, and is not intended to create, and does not create, any agency, partnership,
joint venture or any like relationship between or among the Parties. Without limiting the generality of the foregoing sentence,
each of the Stockholders (a) is entering into this Agreement solely on its own behalf and shall not have any obligation to
perform on behalf of any other holder of Common Stock or any liability (regardless of the legal theory advanced) for any breach
of this Agreement by any other holder of Common Stock and (b) by entering into this Agreement does not intend to form a “group”
for purposes of Rule 13d-5(b)(1) of the Exchange Act or any other similar provision of applicable law. Each of the Stockholders
has acted independently regarding its decision to enter into this Agreement and regarding its investment in Purchaser. 

 

[Remainder of Page Intentionally Left
Blank]

 

    	 	11	 

    

    

 

IN WITNESS WHEREOF,
the Seller and the Stockholders have caused this Agreement to be duly executed as of the day and year first above written.

 

	 	JFL-NRC-SES Partners, LLC
	 	 	 
	 	By:	/s/ David L. Rattner
	 	Name:	David L. Rattner
	 	Title:	Secretary

 

[Signature Page to Voting and Support Agreement]

 

    

    

    

 

IN WITNESS WHEREOF,
the Seller and the Stockholders have caused this Agreement to be duly executed as of the day and year first above written.

 

	 	HENNESSY CAPITAL PARTNERS III LLC,
 
	 	a Delaware limited liability company 
	 	By: Hennessy Capital LLC, its managing member
	 	 	 
	 	By:	/s/ Daniel J. Hennessy
	 	 	Name: Daniel J. Hennessy
	 	 	Title:   Managing Member
	 	 	 
	 	THE BRADLEY J. BELL REVOCABLE TRUST
	 	 	 
	 	By:	/s/ Bradley Bell
	 	 	Name: Bradley Bell
	 	 	Title:   Trustee
	 	 	 
	 	 	/s/ Richard Burns
	 	 	Richard Burns
	 	 	 
	 	 	/s/ Daniel R. DiMicco
	 	 	Daniel R. DiMicco
	 	 	 
	 	 	/s/ James O’Neil III
	 	 	James O’Neil III
	 	 	 
	 	 	/s/ Nicholas Petruska
	 	 	Nicholas Petruska
	 	 	 
	 	 	/s/ Kevin Charlton
	 	 	Kevin Charlton
	 	 	 
	 	BALLYBUNION, LLC
	 	 	 
	 	By:	/s/
Peter Shea
	 	 	Name: Peter Shea
	 	 	Title:   Member/Manager

 

[Signature Page to Voting and Support Agreement]

 

    

    

    

 

SCHEDULE I

 

Beneficial Ownership of Securities

 

	Stockholder	 	Number of
 Shares	 	 	Number of
 Warrants	 
	Hennessy Capital Partners III LLC	 	 	5,291,250	 	 	 	9,600,000	 
	The Bradley J. Bell Revocable Trust	 	 	75,000	 	 	 	—	 
	Richard Burns	 	 	75,000	 	 	 	—	 
	Daniel R. DiMicco	 	 	75,000	 	 	 	—	 
	James O’Neil III	 	 	75,000	 	 	 	—	 
	Nicholas Petruska	 	 	250,000	 	 	 	—	 
	Kevin Charlton	 	 	500,000	 	 	 	—	 
	Ballybunion, LLC	 	 	75,000	 	 	 	—	 
	Total	 	 	6,416,250	 	 	 	9,600,000	 

 

    

    

    

 

SCHEDULE II

 

Directors

 

C. Alexander Harman

Glenn M. Shor

James Baumgardner

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