Document:

April
      3,
      2008

    

    Rubicon
      Financial Incorporated

    19200
      Von
      Karman Ave., Suite 350

    Irvine,
      California 92612

    

    Re:
      Lock-Up of Shares of Common Stock

    

    Gentlemen:

    

    I
      am the
      former President of Rubicon Real Estate & Mortgage, Inc., a California
      corporation (“RREM”). I hold 284,000 shares of Common Stock in Rubicon Financial
      Incorporated (“Rubicon”), a Delaware corporation and parent company to RREM,
      represented by certificate number 6697 (the “Common Stock”).

    

    For
      good
      and valuable consideration, the receipt and sufficiency of which is hereby
      acknowledged, I hereby agree that, during the period beginning on the date
      hereof and continuing to and including the period set forth in the amortization
      schedule for my loan set forth on Addendum A hereto (the “Lock-Up Period”), I
      irrevocably agree that I will not offer, sell, contract to sell, pledge, grant
      any option to purchase, make any short sale or otherwise dispose of the Common
      Stock.

    

    I
      understand and acknowledge that the foregoing restriction is expressly agreed
      to
      preclude me from engaging in any hedging or other transaction which is designed
      to or reasonably expected to lead to, or result in, a sale or disposition of
      the
      Common Stock even if such shares would be disposed of by someone other than
      me.
      Such prohibited hedging or other transactions would include without limitation
      any short sale (whether or not against the box) or any purchase, sale or grant
      of any right (including without limitation any put or call option) with respect
      to the Common Stock or with respect to any security that includes, relates
      to,
      or derives any significant part of its value from such shares. 

    

    Notwithstanding
      the foregoing, I understand that I may transfer the Common Stock (i) as a bona
      fide gift or gifts, or by will or intestacy, provided that the transferee or
      transferees thereof agree to be bound by the restrictions set forth herein,
      (ii)
      to any trust for my direct or indirect benefit or my immediate family, provided
      that the trustee of the trust agrees to be bound by the restrictions set forth
      herein, and provided further that any such transfer shall not involve a
      disposition for value, or (iii) with the prior written consent of Rubicon.
      For
      purposes of this lock-up agreement, “immediate family” shall mean any
      relationship by blood, marriage or adoption, not more remote than first cousin.
      I
      now
      have, and except as contemplated above, for the duration of the Lock-Up Period
      will have, good and marketable title to the Common Stock, free and clear of
      all
      liens, encumbrances and claims whatsoever. I
      also
      agree and consents to the entry of stop transfer instructions with Rubicon’s
      transfer agent and registrar against the transfer of the Common Stock except
      in
      compliance with the foregoing restrictions.

     

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    

      Rubicon-Newman
        Lock-up

      April
        3,
        2008

      Page
        2

       

    

    I
      further
      understand that this lock-up agreement is irrevocable and shall be binding
      upon
      my heirs, legal representatives, successors and assigns.

    

    Lastly,
      I
      forever waive and release any and all claims, liens, charges, or encumbrances
      of
      any kind whatsoever (collectively, the “Claims”) against Rubicon and RREM and
      any of their respective directors, officers, employees, agents, subsidiaries
      and/or affiliates including, without limitation, any Claims related to the
      termination of my employment agreement, my resignation as president of RREM,
      or
      otherwise in connection with any agreement, arrangement or understanding, actual
      or alleged, between me, RREM and Rubicon from now until the end of the world,
      provided,
      however,
      that
      the foregoing waiver and release shall neither apply to nor affect my rights
      and
      obligations with respect to the Common Stock to be held by me subject to the
      terms of the lock-up described above. Upon reasonable request by Rubicon or
      RREM, I agree to execute any acknowledgement of the foregoing waiver and release
      in form reasonably satisfactory to counsel for Rubicon.

    

    Very
      truly yours,

    

    /s/
      Joel
      Newman

    Joel
      Newman

    

    Date:
      4/11/08

    

    Accepted
      and Acknowledged:

    

    Rubicon
      Financial Incorporated

    

    
      	
              By: 

            	
              /s/
                Joseph Mangiapane, Jr

            
	 	
              Joseph
                Mangiapane, Jr., CEO

            

    

    

    Dated:
      4/11/084.1	
              Stock
                Grant and Option Plan

            

    

    

    STOCK
      GRANT AND OPTION PLAN 

    

    1.
      PURPOSE: This Stock Grant and Option Plan (the "Plan") is intended to serve
      as
      an inventive to and to encourage stock ownership by certain directors, officers,
      employees of and certain persons rendering contract services to Nuclear
      Solutions, Inc., a Nevada corporation (the Corporation"), so that they may
      acquire or increase their proprietary interest in the success of the
      Corporation, and to encourage them to remain in the Corporation’s
      service.

    

    2.
      ADMINISTRATION: The Plan will be administered by a committee appointed by the
      Corporation’s Board of Directors (the “Committee”). The Committee will consist
      of not less than two (2) members who will be appointed by, and serve at the
      pleasure of, the Corporation's Board of Directors. The Board of Directors may
      from time to time remove members from, or add members to, the Committee.
      Vacancies on the Committee, however caused, will be filled only by the Board
      of
      Directors. The Committee will select one of its members as Chairman, and will
      hold meetings at such times and places as it may determine. Acts by a majority
      of the Committee in a meeting at which a quorum is present and acts approved
      in
      writing by a majority of the members of the committee will be the valid acts
      of
      the Committee. No member of the Committee will vote on any matter concerning
      his
      or her own participation in the Plan, except that the Board of Directors as
      a
      whole may act on stock grants and options granted to directors. If no Committee
      has been appointed, the entire Board will constitute the Committee.

    

    The
      Committee will be authorized to grant stock and/or options under the Plan to
      such directors, officers, employees of and other persons rendering service
      to
      the Corporation or any parent or subsidiary corporation of the Corporation,
      as
      defined for purposes of Internal Revenue Code Section 422A ("Parent or
      Subsidiary"), at such times and in such amounts as it may decide. 

    

    The
      interpretation and construction by the Committee of any provisions of the Plan
      or of any option granted under it will be final unless otherwise determined
      by
      the Board of Directors. No member of the Committee or Board of Directors will
      be
      liable for any action or determination made in good faith with respect to the
      Plan or any option granted under it. 

    

    
      3.ELIGIBILITY

    

    3.1.
      General: The Participants will include directors, employees, including officers,
      of the Company and its divisions and subsidiaries, and consultants and attorneys
      who provide bona fide services to the Company. Participants are eligible to
      be
      granted warrants, options, restricted common, or unrestricted common and other
      awards under this Plan and to have their bonuses and/or consulting fees payable
      in warrants, restricted common, unrestricted common and other awards. A
      Participant who has been granted an option, or warrant hereunder may be granted
      an additional option, warrant options, warrants or preferred stock, if the
      Committee will so determine. 

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    3.2.
      Termination of Eligibility: Any option granted hereunder will expire if, for
      any
      reason other than his or her death, the optionee (i) ceases to be employed
      by
      the Corporation or a Parent or Subsidiary thereof; (ii) is no longer a member
      of
      the Corporation's Board of Directors; or (iii) no longer performs services
      for
      the Corporation as an independent contractor. The expiration will take effect
      at
      the earliest of the following times: four (4)months from the date of the
      occurrence causing termination of eligibility (twelve (12) months if the
      optionee's eligibility ceases because of his or her disability), or upon the
      date the option expires by its terms. During such four-month period, the option
      may be exercised in accordance with its terms, but only in respect of the number
      of shares for which the right to exercise has accrued on the date of termination
      of employment, or status as a director or independent contractor. The Committee
      will decide whether an authorized leave of absence or absence for military
      or
      governmental service, or absence for any other reason, will constitute
      termination of eligibility for purposes of this Section. This determination
      will
      be subject to review by the Board of Directors. 

    

    3.3.
      Death of Optionee and Transfer of Option: If the optionee dies while eligible
      to
      participate in the Plan, or within four (4) months after the termination of
      his
      or her eligibility, and will not have fully exercised the option, the option
      may
      be exercised at any time within twelve (12) months after the optionee's death
      by
      the optionee's executors or administrators or by any person or persons who
      acquired the option directly from the optionee by bequest or inheritance.
      However, no option will be exercisable after it expires; and options may be
      exercised only to the extent that the optionee's right to exercise the option
      had accrued at the time of his or her death and had not been previously
      exercised. No option will be transferable by the optionee otherwise than by
      will
      or the laws of intestate succession.

    

    4.
      IDENTIFICATION OF STOCK: The stock subject to grant and the options will be
      shares of the Corporation's authorized but unissued or acquired or reacquired
      Common Stock, par value $0.0001 (the "Stock"). The aggregate number of shares
      subject to stock grants and options will not exceed 10,000,000 shares of Stock
      (subject to adjustment as provided in Section 5.6). If any option granted
      hereunder will expire or terminate for any reason without having been exercised
      in full, the unpurchased shares subject thereto will again be available for
      purposes of this Plan.

    

    5.
      STOCK
      GRANTS, OPTIONS AND WARRANTS: The Committee will have sole and absolute
      discretionary authority (i) to determine, authorize, and designate those persons
      pursuant to this Plan who are to receive warrants, options, restricted common,
      or unrestricted common stock under the Plan, (ii) to determine the number of
      shares of Common Stock to be covered by such grant or such options or warrants
      and the terms thereof, (iii) to determine the type of Common Stock granted:
      restricted common or convertible preferred stock, unrestricted common stock
      or a
      combination of restricted and unrestricted common stock. The Committee will
      thereupon grant stock, options or warrants in accordance with such
      determinations as evidenced by a written stock grant, option or warrant
      agreement. Subject to the express provisions of the Plan, the Committee will
      have discretionary authority to prescribe, amend and rescind rules and
      regulations relating to the Plan, to interpret the Plan, to prescribe and amend
      the terms of the option or warrant agreements (which need not be identical)
      and
      to make all other determinations deemed necessary or advisable for the
      administration of the Plan. Any stock, option or warrant granted pursuant to
      the
      Plan will comply with and be subject to the following terms and
      conditions:

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    5.1.
      Number of Shares: Each grant, option or warrant will state the number of shares
      to which it pertains.

    

    5.2.
      Price: Each stock grant, option or warrant will state a price, which will be
      determined at the Committee's discretion.

    

    5.3.
      Method of Option Exercise: An option will be exercised by written notice to
      the
      Corporation stating the number of shares with respect to which the option is
      being exercised and designating a time for the delivery thereof, which will
      be
      not more than fifteen (15) days after notice is given unless another date was
      mutually agreed upon. At the time specified in the notice, the Corporation
      will
      deliver to the optionee at the Corporation's principal office, or other
      appropriate place the Committee determines, a certificate(s) for such shares
      of
      previously authorized but unissued shares or acquired or reacquired shares
      of
      Stock as the Corporation may elect. Notwithstanding the foregoing, the
      Corporation may postpone delivery of any certificate(s) after notice of exercise
      for any reasonable period required to comply with any applicable listing
      requirements of any national or other securities exchange. In the event an
      option will be exercisable by any person other than the optionee, the required
      notice under this section will be accompanied by appropriate proof of such
      person's right to exercise the option.

    

    5.4.
      Medium and Time Payment: The option price will be payable in full upon the
      exercise of the option by certified or bank cashier's check, the promissory
      note
      of the optionee, or any equivalent form of payment acceptable to the
      Corporation.

    

    5.5.
      Term
      of Option: The term of an option granted hereunder will be determined by the
      Committee at the time of grant, but will not exceed ten (10) years from the
      day
      of the grant. In no event will any option be exercisable after the expiration
      of
      its term.

    

    5.6.
      Adjustments Upon Changes in Capitalization: Subject to any required shareholder
      action, the number of shares of stock covered by each outstanding option and
      the
      price per share in each such option will be proportionately adjusted for any
      increase or decrease in the number of issued shares of Stock of the Corporation
      resulting from: (i) a subdivision or consolidation of shares; (ii) the payment
      of a stock dividend (but only on the Stock); (iii) any other increase or
      decrease in the number of such shares effected without receipt of consideration
      by the Corporation; (iv) or, as to Stock issued other than pursuant to a stock
      option granted to a director, officer, employee or a person rendering services
      as an independent contractor to the Corporation or any Parent or Subsidiary,
      any
      increase or decrease in the number of shares made for per share consideration
      less than the option price of such option. Any fraction of a share subject
      to
      option that would otherwise result from an adjustment pursuant to this
      subparagraph will be rounded downward to the next full number of shares without
      other compensation or consideration to the holder of the option. Subject to
      any
      required shareholder action, if the Corporation will be the surviving
      corporation in any merger or consolidation, each outstanding option will pertain
      and apply to the securities to which a holder of the number of shares of Stock
      subject to the option would have been entitled. The Corporation's Board of
      Directors may grant each optionee the right to exercise his or her option in
      whole or in part immediately prior to the Corporation's dissolution or
      liquidation, or merger or consolidation in which the corporation is not the
      surviving corporation. If the Corporation is consolidated with or merged into
      any other corporation, or if the Corporation sells or transfers all or
      substantially all of its assets, or if any other similar event affecting shares
      of Stock of the Corporation should occur, and if the exercisability of the
      options is not accelerated by the Board of Directors and the acquiring
      Corporation assumes the Corporation's obligations under the options granted
      under this Plan, then each optionee will be entitled thereafter to purchase
      shares of stock and other securities and property in the kind and amount, and
      at
      the price, which the optionee would have been entitled had his or her option
      been exercised prior to such event. The Corporation will make lawful provision
      therefore as part of any such transaction. To the extent that the foregoing
      adjustments relate to stock or securities of the Corporation, they will be
      made
      by the Committee, whose determinations will be final, binding and conclusive.
      The grant of an option pursuant to the Plan will not affect in any way the
      Corporation's right or power to make adjustments, reclassifications,
      reorganizations or changes of its capital or business structure, or to merge
      or
      to consolidate or to dissolve, liquidate or sell, or transfer all or any part
      of
      its business or assets. Whenever the Corporation takes any action resulting
      in
      any adjustment provided for in this Section 5.6, the Corporation will forthwith
      deliver notice of the action to optionee. The notice will set forth the number
      of shares subject to this Option and the purchase price thereof resulting from
      the adjustment. 

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    5.7.
      Rights as a Shareholder: An optionee or a transferee of an option will have
      no
      rights as a shareholder with respect to any shares underlying his or her option
      until the date the optionee is issued a certificate for such shares. No
      adjustment will be made for dividends (ordinary or extraordinary, whether in
      cash, securities or other property) or distributions or other rights for which
      the record date is prior to the date such stock certificate is issued, except
      as
      provided in Section 5.6 above. 

    

    5.8.
      Modification, Extension and Renewal of Options: Subject to the terms and
      conditions and within the limitations of the Plan, the Committee may modify,
      extend or renew outstanding options granted under the Plan, or accept the
      surrender of outstanding options (to the extent not theretofore exercised)
      and
      authorize the granting of new options in substitution therefore (to the extent
      not theretofore exercised). 

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    5.9.
      Other Provisions: The option agreements authorized under the Plan will contain
      such other provisions, including without limitation, restrictions upon the
      exercise of the option, as the Committee and the Board of Directors of the
      Corporation will deem advisable. Thus, for example, the Committee and the Board
      of Directors may require that all or any portion of an option granted hereunder
      not be exercisable until a specified period of time has passed or some other
      event has occurred.

    

    6.
      TERM
      OF PLAN: Options may be granted pursuant to the Plan from time to time within
      a
      period of ten (10) years from the date the Plan is adopted by the Corporation's
      Board of Directors or is approved by the Corporation's shareholders, whichever
      occurs earlier. Termination of the Plan will not affect any option previously
      granted. 

    

    7.
      AMENDMENT OF THE PLAN: To the extent permitted by law and subject to any
      required approval by the Corporation's shareholders, the Board of Directors
      may
      suspend or discontinue the Plan or revise or amend it in any way with respect
      to
      any shares not subject to options at that time.

     

    8.
      APPLICATION OF FUNDS: The proceeds received by the Corporation from the sale
      of
      Stock pursuant to options may be used for general corporate purposes.

    

    9.
      NO
      OBLIGATION TO EXERCISE OPTION: The granting of an option will impose no
      obligation upon the optionee to exercise such option.

    

    10.
      SECURITIES LAWS COMPLIANCE: Notwithstanding anything contained herein, the
      Corporation will not be obligated to grant any option under this Plan, or to
      sell or issue any share pursuant to any option agreement executed pursuant
      to
      the Plan, unless the grant or sale is effectively registered or exempt from
      registration under the Securities Act of 1933, as amended.

    

    11. SECTION
      16(B) OF THE EXCHANGE ACT. All elections and transactions under this Plan by
      persons subject to Section 16 of the Exchange Act involving shares of Common
      Stock are intended to comply with any applicable exemptive condition under
      Rule
      16b-3. The Committee may establish and adopt written administrative guidelines,
      designed to facilitate compliance with Section 16(b) of the Exchange Act, as
      it
      may deem necessary or proper for the administration and operation of this Plan
      and the transaction of business thereunder. In the event that an affiliate
      of
      the company acquires shares of common stock under this Plan, the affiliate
      will
      be subject to section 16(b) of the Exchange Act. To the extent that a Rule
      16b-3
      exemptive provision is unavailable and in the event that any affiliate acquiring
      shares hereunder has sold or sells any shares of common stock in the six months
      preceding or following the receipt of shares hereunder, any so called "profit",
      as computed under Section 16(b) of the Exchange Act, would be recognized as
      valid consideration for the "purchase" of shares in connection with the "profit"
      computation under Section 16(b) of the Exchange Act. In this case, the Company
      has agreed, that for the purpose of any "profit" computation under 16(b), the
      price paid for the common stock issued to affiliates is equal to the value
      of
      services rendered. Shares of common stock acquired hereunder by persons other
      than affiliates are not subject to section 16(b) of the Exchange
      Act.

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    As
      adopted by the Board of Directors on April 29, 2008.

    

    
      	
              Silver
                Hill Mines, Inc.,

            
	
              a
                Nevada corporation

            
	 
	 
	
              By:
                Steve Bergstrom

            
	
              Its:
                President

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