Document:

SECURED
PROMISSORY NOTE

     

    
      	
              $86,612.00

            	
              June
      11, 2009

            

    

     

    FOR VALUE
RECEIVED and as consideration for executing that certain Asset Purchase
Agreement of even date herewith (the “Asset Purchase Agreement”), and the sale
and transfer of the Assets described therein, GROVE POWER, INC., a Florida
corporation (the “Maker”), hereby promises to pay to R.B. GROVE, INC., a Florida
corporation, or its successors and assigns (the “Payee”), at 1881 NW 93rd Avenue,
Doral, Florida or such other address as Payee shall provide in writing to the
Maker for such purpose, a principal sum of Eighty Six Thousand Six Hundred and
Twelve Dollars (U.S. $86,612.00) (the “Principal Amount”).

    

    1.           Payments and
Maturity.  Maker agrees to repay the Principal Amount of this
secured promissory note (the “Note”) and simple interest accrued thereon over
eighteen (18) months at the rate of eight percent (8%) per annum on the date
eighteen months from the date of this Note, November 11, 2010.

    

    2.           No Prepayment
Penalty.  The Principal Amount and any accrued and unpaid
interest thereon may be paid by Maker in whole or in part at any time with no
prepayment penalty.

    

    3.           Default and
Acceleration. Upon the occurrence of a Default (as defined below), the
Payee shall have the right (in addition to all other rights it may have
hereunder, under the Security Agreement, or under applicable law), exercisable
at the sole option of the Payee, to accelerate the entire outstanding principal
sum remaining due and unpaid plus all accrued and unpaid interest thereon, which
shall be due and payable within thirty (30) Business Days of the date on which
the written notice for the payment therefore provided by the Payee is received
by Maker.  If the Maker fails to pay such payment pursuant to this
Section on the date such amount is due in accordance with this Section, the
Maker will pay simple interest on such unpaid and overdue amount at a rate of
eighteen percent (18%) per annum (or such lesser amount permitted by applicable
law), accruing daily from such date until such amount, plus all such interest
thereon, is paid in full.

    

    A
“Default” means any one or more of the following events:

    

    (a)           any
failure by Maker to pay any amount hereunder, within fifteen (15) Business Days
of the due date of any such payment;

     

    (b)           the
commencement of any liquidation, reorganization, receivership, bankruptcy,
assignment for the benefit of creditors or other debtor-relief proceeding by or
against Maker, which is not discharged or cured by Maker within sixty (60)
days;

     

    (c)           the
Maker shall fail to observe or perform any other material covenant, material
agreement or material warranty contained in, or otherwise commit any material
breach of, the Asset Purchase Agreement or the Security Agreement, and such
material failure or material breach shall not, if subject to the possibility of
a cure by the Maker, have been remedied within thirty (30) days after the date
on which written notice of such failure or breach shall have been received by
Maker.

    
      
         

      

      
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    4.           Secured Obligation.
The obligations of Maker under this Note are secured by the Maker’s grant of a
subordinated security interest in and to the Assets (as defined in the Asset
Purchase Agreement) pursuant to and as described in the Security Agreement (as
defined in Section 13).  Payee represents and warrants that the Assets
were transferred free and clear of any liens, other than as described herein and
in the Security Agreement, by the Payee to the Maker pursuant to the Asset
Purchase Agreement.

     

    5.           No Waiver of Payee’s Rights,
etc.  All payments of principal and interest shall be made
without setoff, deduction or counterclaim.  No delay or failure on the
part of the Payee in exercising any of its options, powers, or rights, nor any
partial or single exercise of its options, powers or rights shall constitute a
waiver thereof or of any other option, power or right, and no waiver on the part
of the Payee of any of its options, powers or rights shall constitute a waiver
of any other option, power or right.  The Maker hereby waives
presentment of payment, protest, and any notices or demands in connection with
the delivery, acceptance, performance, default or endorsement of this
Note.  Acceptance by the Payee of less than the full amount due and
payable hereunder, except as otherwise agreed by the parties, shall in no way
limit the right of the Payee to require full payment of all sums due and payable
hereunder in accordance with the terms hereof.

    

    6.           Modifications.  No
term or provision contained herein may be modified, amended or waived except by
written agreement or consent signed by the party to be bound
thereby.

    

    7.           Cumulative Rights and
Remedies; Usury.  The rights and remedies of the Payee
expressed herein are cumulative and not exclusive of any rights and remedies
otherwise available. If it shall be found that any interest outstanding
hereunder shall violate applicable laws governing usury, the applicable rate of
interest outstanding hereunder shall be reduced to the maximum permitted rate of
interest under such law.

    

    8.           Collection
Expenses.  If this obligation is placed in the hands of an
attorney for collection after default, and provided the Payee prevails on the
merits in respect to its claim of default, the Maker shall reimburse Payee for
the reasonable attorneys’ fees and expenses incurred by the Payee in pursuing
collection of this Note.

    

    9.           Successors and
Assigns. This Note shall be binding upon the Maker and its successors and
shall inure to the benefit of the Payee and its successors and assigns. The term
“Payee” as used herein, shall also include any endorsee, assignee or other
holder of this Note.

    

    10.           Lost or Stolen Promissory
Note. If this Note is lost, stolen, mutilated or otherwise destroyed, the
Maker shall execute and deliver to the Payee a new promissory note containing
the same terms, and in the same form, as this Note.  In such event,
the Maker may require the Payee to deliver to the Maker an affidavit of lost
instrument and customary indemnity in respect thereof as a condition to the
delivery of any such new promissory note.

    
      
         

      

      
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    11.         Due
Authorization.  This Note has been duly authorized, executed
and delivered by the Maker and is the legal obligation of the Maker, enforceable
against the Maker in accordance with its terms.

    

    12.         Governing
Law.  This Note shall be governed by and construed and enforced
in accordance with the internal laws of the State of Florida without regard to
the principles of conflicts of law thereof.  Each party hereby
irrevocably submits to the exclusive jurisdiction of the state and federal
courts sitting in the county of Miami-Dade County, State of Florida, for the
adjudication of any dispute hereunder or in connection herewith or with any
transaction contemplated hereby or discussed herein and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim
that it is not personally subject to the jurisdiction of any such court, that
such suit, action or proceeding is improper.  Each party hereby
irrevocably waives personal service of process and consents to process being
served in any such suit, action or proceeding by mailing a copy thereof to such
party at the address in effect for notices to it under this Note and agrees that
such service shall constitute good and sufficient service of process and notice
thereof.  Nothing contained herein shall be deemed to limit in any way
any right to serve process in any manner permitted by law.

    

    13.         Definitions. For the
purposes hereof, the following terms shall have the following
meanings:

    

    “Business Day” means
any day except Saturday, Sunday and any day which shall be a legal holiday or a
day on which banking institutions in the Stat of Delaware of State of California
are authorized or required by law or other government action to
close.

    

    “Person” means a
corporation, an association, a partnership, limited liability company, an
organization, a business, an individual, a government or political subdivision
thereof or a governmental agency.

    

    “Security Agreement”
means that certain Security Agreement of even date herewith between Maker and
Payee regarding the grant of a subordinated security interest in the Assets, as
amended, modified or supplemented from time to time in accordance with its
terms.

    
      
         

      

      
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    IN WITNESS WHEREOF, the Maker has
caused this Secured Promissory Note to be duly executed and delivered as of the
date first set forth above.

     

    
      
        	 
      	
                GROVE
      POWER, INC.

              	 
      
	 
      	 
      	 
      
	 
      	
                /s/ Jeffrey Flannery

              	 
      
	 
      	
                Jeffrey
      Flannery, CFO and Chairman

              	 
      
	 
      	 
      	 
      
	 
      	
                Accepted
      and agreed:

              	 
      
	 
      	 
      	 
      
	 
      	
                RB
      GROVE, INC.

              	 
      
	 
      	 
      	 
      
	 
      	
                /s/ Thomas Piper

              	 
      
	 
      	
                Thomas
      Piper, President

              	 
      

      

    

    
      
         

      

      
        410.0    Stock
Purchase Agreement

    

    STOCK
PURCHASE AGREEMENT

    

    THIS AGREEMENT is entered into
the 12th day of June 2009 between NUCLEAR SOLUTIONS, INC., a Nevada corporation,
(herein, the “SELLING SHAREHOLDER”), and SCHRADER & ASSOCIATES DEFINED
BENEFIT PENSION PLAN, (herein, “PURCHASER”).  FUEL FRONTIERS, INC., a
Nevada corporation will execute this agreement for the purpose of affirming
representations and warranties made concerning FUEL FRONTIERS, INC. (the
“COMPANY”).

    

    

    WHEREAS, SELLING SHAREHOLDER
owns Thirty Million (30,000,000) shares of Fuel Frontiers, Inc., a Nevada
corporation, (the “COMPANY”) which represents all of the issued and outstanding
capital stock of Fuel Frontiers, Inc.; and

    

    WHEREAS, SELLING SHAREHOLDER
desires to sell and PURCHASER desires to purchase Three Million (3,000,000)
common shares of Fuel Frontiers, Inc. which represents Ten (10.0%) of the
capital stock of Fuel Frontiers, Inc.

    

    NOW, THEREFORE, based upon the
mutual promises contained herein and other good and valuable consideration, the
receipt and sufficiency of which hereby is acknowledged, and intending to be
legally bound hereby, the parties agree as follows:

    

    1.            
Agreement

    

    1.1           
Purchase Price of
Shares Purchased from the SELLING SHAREHOLDER.

    

    With the
execution hereof, PURCHASER acquires from the SELLING SHAREHOLDER and the
SELLING SHAREHOLDER sells to the PURCHASER Three Million (3,000,000) common
shares of Fuel Frontiers, Inc. (the “Shares”) for Three Hundred Fifty Thousand
Dollars (US$350,000) (the “Purchase Price”).

    

    2.            
Representations,
Warranties Covenants, Obligations and General Provisions:

    

    2.1
SELLING SHAREHOLDER represents and warrants to PURCHASER as of the date hereof
and as of the Closing Date:

    

    (a) Incorporation, Authority and
Qualification of the SELLING SHAREHOLDER and the COMPANY. Nuclear
Solutions, Inc., and Fuel Frontiers, Inc., are corporations duly incorporated,
validly existing and in good standing under the laws of the State of
Nevada.  The COMPANY was organized on September 2, 2005 as Future
Fuels, Inc. and changed its corporate name to Fuel Frontiers, Inc. on March 21,
2006.  The COMPANY has all necessary corporate power and authority to
carry on the business now being conducted by it.  The COMPANY is
authorized to issue 100,000,000 common shares, par value $0.0001 per share and
10,000,000 preferred shares, par value $0.001 per share. As of the date of this
Agreement the COMPANY has 30,000,000 common shares issued and
outstanding.   No preferred shares are issued or
outstanding.  Except as described above, no other classes of stock are
authorized or issued.

    

    (b) Authority of SELLING
SHAREHOLDER to Sell Shares. The SELLING SHAREHOLDER’S shares are free and
clear of all liens, charges, demands, community property interests, adverse
claims or other restrictions on the exercise of any of the attributes of
ownership with the exception of restrictions imposed by applicable federal and
state corporate and securities laws.  There are no contracts,
arrangements, commitments or restrictions relating to the sale, transfer or
purchase of the Shares, except as outlined in this Agreement.

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    

    (c) Enforceability of Agreement
Against the SELLING SHAREHOLDER.  The SELLING SHAREHOLDER has
all necessary power and authority to enter into this Agreement and the Related
Documents to which it is a party, to carry out its obligations hereunder and
thereunder and to consummate the transactions contemplated hereby and
thereby.  This Agreement has been, and each Related Document to which
the SELLING SHAREHOLDER is a party will be, duly executed and delivered by the
SELLING SHAREHOLDER. This Agreement constitutes, and each Related Document to
which the SELLING SHAREHOLDER is a party will constitute, the legal, valid and
binding obligations of the SELLING SHAREHOLDER, enforceable against it in
accordance with the respective terms, except as the same may be limited by
bankruptcy, insolvency (including, without limitation, all laws relating to
fraudulent transfers), reorganization, moratorium and similar laws affecting the
rights and remedies of creditors generally and the application of general
principles of equity.

    

    (d)  Shares.  The
shares, when transferred by the SELLING SHAREHOLDER, will be free and clear of
all liens, charges, demands or adverse claims or other restrictions on the
exercise of any of the attributes of ownership, with the exception of
restrictions imposed by applicable federal and state corporate and securities
laws.

    

    (e) SEC Reports. The
SELLING SHAREHOLDER has furnished to PURCHASER, or the PURCHASER has represented
that it has reviewed, copies of its most recent reports which it has filed with
the Securities and Exchange Commission on Form 10-K for the year ending December
31, 2008, including the interim report on Form 10-Q for the quarter ending March
31, 2009, (the “SEC Reports”).

    

    (f)  Litigation.  To
the knowledge of the SELLING SHAREHOLDER, there is no claim, action,
investigation, arbitration or proceeding pending or, threatened against the
COMPANY of any kind whatsoever, or against or relating to any of the assets or
the ability of the COMPANY to perform its obligations hereunder, before any
arbitrator, judge, court or governmental authority, nor is the COMPANY is not
subject to any order, writ judgment, injunction, decree, determination or award
of any arbitrator, judge, court or governmental authority.

    

    2.2  PURCHASER
represents and warrants to SELLING SHAREHOLDER as of the date hereof and as of
the Closing Date:

    

            (a)  INVESTMENT.  The
PURCHASER is acquiring the Shares for investment for its own account, not as a
nominee or agent, and not with a view to, or for resale in connection with, any
distribution thereof.  The PURCHASER understands that the Shares have
not been registered under the Securities Act by reason of a specific exemption
from the registration provisions of the Securities Act which depends upon, among
other things, the bona fide nature of the investment intent and the accuracy of
the PURCHASER's representations and warranties contained herein.

    

         (b)  DISCLOSURE
OF INFORMATION.  The PURCHASER has had full access to all information
it considers necessary or appropriate to make an informed investment decision
with respect to the Shares to be purchased by the PURCHASER under this
Agreement.  The PURCHASER further has had an opportunity to ask
questions and receive answers from the COMPANY regarding the terms and
conditions of the offering of the Shares and to obtain additional information
necessary to verify any information furnished to the PURCHASER or to which the
PURCHASER had access.

    

         (c)  INVESTMENT
EXPERIENCE.  The PURCHASER understands that the purchase of the Shares
involves substantial risk.  The PURCHASER has experience as an
investor in securities of companies and acknowledges that it is able to fend for
himself, can bear the economic risk of its investment in the Shares and has such
knowledge and experience in financial or business matters that he is capable of
evaluating the merits and risks of this investment in the Shares and protecting
his own interests in connection with this investment.

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    

         (d)  ACCREDITED
INVESTOR STATUS.  The PURCHASER is an "accredited investor" within the
meaning of Regulation D promulgated under the Securities Act since (i) he has a
net worth in excess of One Million Dollars ($1,000,000); or (ii) his individual
income (without his spouse) was in excess of $200,000 in each of the two most
recent years, or his joint income with his spouse was in excess of $300,000 in
each of those years, and the PURCHASER reasonably expects an income reaching the
same income level in the current year.

    

         (e)  RESTRICTED
SECURITIES.  The PURCHASER understands that the Shares to be purchased
hereunder are characterized as "restricted securities" under the Securities Act
inasmuch as they are being acquired from the COMPANY in a transaction not
involving a public offering and that under the Securities Act and applicable
regulations thereunder such securities may be resold without registration under
the Securities Act only in certain limited circumstances.  The
PURCHASER is familiar with Rule 144 of the SEC, as presently in effect, and
understands the resale limitations imposed thereby and by the Securities
Act.  The PURCHASER understands that the COMPANY is under no
obligation to register any of the Shares sold hereunder except as provided in
the Registration Rights Agreement.

    

    

    3.           CLOSING
DATE; DELIVERY

    

         3.1  The
Closing of the purchase and sale of the Shares hereunder (the "Closing") shall
be held at the offices of the SELLING SHAREHOLDER at approximately 5:00 p.m.
(Eastern time), June 12, 2009, or at such other time and place as the COMPANY
and the PURCHASER mutually agree (the date of the Closing being hereinafter
referred to as the "Closing Date").

    

         3.2  Closing.

    

    (a) The
parties shall execute this Stock Purchase Agreement and the additional
transaction documents including the Management Agreement attached hereto as
Exhibit A, and two Option Agreements in favor of the PURCHASER and the SELLING
SHAREHOLDER, attached hereto as Exhibit B and Exhibit C, respectively. Executed
counterpart signature pages shall be exchanged by the PURCHASER and the SELLING
SHAREHOLDER via facsimile

    

    (b)
PURCHASER will then pay the Purchase Price of Three Hundred Fifty Thousand
($350,000) U.S. Dollars for the shares via bank wire transfer of immediately
available funds to an account designated by the SELLING
SHAREHOLDER.

    

    (c) Upon
receipt of the executed transaction documents and the Purchase Price, the
SELLING SHAREHOLDER shall immediately instruct the COMPANY’s transfer agent to
issue and deliver to the PURCHASER a certificate or certificates representing
the Shares of Fuel Frontiers, Inc. in accordance with this
Agreement.

    

    (d) The
certificate or certificates representing the Shares shall bear a legend
restricting transfer under the Securities Act of 1933, as amended (the
"Securities Act"), and referring to restrictions on transfer herein, such legend
to be substantially as follows:

    

    

    
      
        	
                 
      

              	
                THESE
      SECURITIES HAVE NOT BEEN REGISTERED OR OTHERWISE QUALIFIED UNDER THE
      SECURITIES ACT OF 1933 (THE 'SECURITIES ACT') OR UNDER THE APPLICABLE OR
      SECURITIES LAWS OF ANY STATE. NEITHER THESE SECURITIES NOR ANY INTEREST
      THEREIN MAY BE SOLD, TRANSFERRED, PLEDGED OR OTHERWISE DISPOSED OF IN THE
      ABSENCE OF REGISTRATION UNDER THE SECURITIES ACT OR ANY APPLICABLE
      SECURITIES LAWS OF ANY STATE, UNLESS PURSUANT TO EXEMPTIONS
      THEREFROM.

              	 

      

    

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    

    and/or
such other legend or legends as the COMPANY and its counsel deem necessary or
appropriate. Appropriate stop transfer instructions with respect to the Shares
will be placed with the COMPANY's transfer agent.

    

    4.           Registration
Rights.   Fuel Frontiers, Inc. grants PURCHASER demand and
piggyback registration rights for shares purchased on the June 12, 2009 Stock
Purchase Agreement and Stock Option Agreement with Nuclear Solutions,
Inc.  If PURCHASER exercises his demand registration rights, he will
be responsible for all registration costs.  If PURCHASER exercises
piggyback registration rights, FFI will pay all costs associated with the
registration process. SCHRADER acknowledges that the amount of shares that may
be registered for any selling shareholder may be limited by SEC rules and
practice and that all of his Shares may not be able to be registered in one
registration with the SEC.

    

    5.           Repurchase
Rights.   PURCHASER shall grant the SELLING SHAREHOLDER
and the COMPANY the first right of refusal to match and exceed any third party
bona fide offer to purchase PURCHASER’S shares until June 12, 2014. PURCHASER
must give COMPANY and SELLING SHAREHOLDER at least 30 days prior written notice
of any potential transaction with a third party, accompanied with a copy of the
offer to purchase received by the PURCHASER. The SELLING SHAREHOLDER’S rights
herein shall extend to any shares purchased by the HOLDER by way of exercise of
the June 12, 2009 option in favor of SCHRADER & ASSOCIATES DEFINED BENEFIT
PENSION PLAN.

    

    6.           General
Provisions.

    

    6.1           Headings and
Interpretation.  The headings used in this Agreement are for
reference purposes only and will not affect the meaning or interpretation of any
term or provision of this Agreement.

    

    6.2           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 will 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.

    

    6.3           Entire
Agreement.  This Agreement and the Related Documents represent
the entire understanding of the parties with reference to the matters set forth
herein and therein.  This Agreement and the transaction documents
attached hereto supersede all prior negotiations, discussions, correspondence,
communications and prior agreements among the parties relating to the subject
matter herein.

    

    6.4           Amendment.  This
Agreement may not be amended or modified except by an instrument in writing
signed by the parties hereto.

    

    6.5           Applicable Law; Jurisdiction
and Venue.  This Agreement, and all transactions contemplated
hereby, shall be governed by, construed and enforced in accordance with the laws
of the District of Columbia  The parties hereto waive trial by jury
and agree to submit to the personal jurisdiction and venue of a court of subject
matter jurisdiction located in the District of Columbia.  In the event
that litigation results from or arises out of this Agreement or the performance
thereof, the parties agree to reimburse the prevailing party’s reasonable
attorney’s fees, court costs, and all other expenses, whether or not taxable by
the court as costs, in addition to any other relief to which the prevailing
party may be entitled.

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    

    6.6           Counterparts and Facsimile
Transmission Copies of Originals.  This Agreement may be
executed in several original or facsimile copy  counterparts and all
so executed and transmitted will constitute one Agreement, binding on all the
parties hereto even though all the parties are not signatories to the original
or the same counterpart.  Facsimile transmitted signatures will be
deemed valid as though they were originals and the parties may perform any and
all obligations and duties in reliance on the facsimile copies.

    

    6.7           Further Assurances,
Additional Documents, Etc. The COMPANY and the SELLING SHAREHOLDER will
do any further acts and sign and deliver to PURCHASER or its designated
agents,  any additional assurances and instruments that the PURCHASER
may require to more completely assure to the PURCHASER  rights under
this Agreement.

    

    6.8           Termination.  Unless
extended by written consent of all parties, this Agreement shall terminate and
have no further force or effect if the closing hereunder shall not have occurred
on or before June 12, 2009.

    

    IN WITNESS WHEREOF, the
parties hereto have executed, or caused their duly authorized representatives to
execute, this Stock Purchase Agreement as of the date first written
above.

    

    

    NUCLEAR
SOLUTIONS, INC.

    
      
        
          
            
              
                
                  
                    
                      
                        
                          
                            
                              
                                
                                  
                                    
                                      
                                        
                                          
                                            
                                              
                                                
                                                  
                                                    
                                                      
                                                        	 	 	 	 	 	 
	By:	
                                                                /s/
      Patrick Herda

                                                              	 	 	
                                                                 

                                                              	 
	 	
                                                                Patrick
      Herda, CEO

                                                              	 	 	
                                                                 

                                                              	 
	 	 	 	 	 	 
	 	
                                                                 

                                                              	 	 	
                                                                 

                                                              	 
	FUEL
      FRONTIERS, INC.	 	 	 	 
	 	 	 	 	 	 
	By:  	/s/ David
      Maland	 	 	 	 
	 	David
      Maland, President	 	 	 	 
	 	 	 	 	 	 
	 	 	 	 	 	 
	SCHRADER
      & ASSOCIATES DEFINED BENEFIT PENSION PLAN	 
	 	 	 	 	 	 
	By:	Scott
      A. Schrader, 	 	 	 	 
	 	Scott
      A. Schrader	 	 	 	 
	 	Title

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