Document:

EXHIBIT 10.148

                              DR Vladivoj Valkovic
                                   Prilesje 4
                                  10000 ZAGREB
                                     Croatia

                                                               February 16, 2006

Dr. Bogdan C. Maglich
Chairman and Chief Executive Officer
HiEnergy Technologies, Inc.
1601B Alton Parkway
Irvine, CA  92606

RE: HiEnergy Technologies, Inc.  - Engagement Letter

Dear Sir,

This letter will confirm our mutual understanding concerning advisory and
consulting services that I, Dr. Vladivoj Valkoviae ("Valkoviae"), will render to
HiEnergy Technologies, Inc. and/or its subsidiaries ("HiEnergy"), as described
herein.

      Services
      --------

      1.    Valkovic will provide HiEnergy with advisory services to assist
            HiEnergy in product and technology sales, promotion, research,
            product development and integration, and technology licensing and
            funding opportunities.

            The services provided by Valkovia will include (but not be limited
            to):

            o     Sales of all HiEnergy's products and re-sale technologies in
                  Europe and Africa;

            o     Significant participation in the projects funded by NATO,
                  IAEA, EU and local governments;

            o     Organizing conferences, seminars, shows, exhibits, meetings
                  and other events in Europe including TV and radio shows in
                  which HiEnergy and its products will receive prominent role;
                  and

            o     Producing publications, CD's, films, books in which HiEnergy
                  and its products will receive prominent role.

      Compensation
      ------------

      2.    HiEnergy will pay Valkoviae a retainer of $40,000 for aforementioned
            services to be rendered to HiEnergy. Said retainer will be pre-paid
            in the form of restricted stock, which is to be filed under a
            Registration Statement on Form S-8 and would be cancelable, or
            refundable to the Company, if Valkoviae voluntary resigns and/or
            cancels the engagement prior to performing any of the Services under
            the Engagement. In the event that the value of the stock falls
            between the date of receipt and the date you are able to liquidate
            such shares lawfully in the public market, the Company agrees to
            issue to you for no further consideration such additional number of
            shares as is equal to the dollar balance of retainer compensation
            earned for which payment has not then been received directly or
            through the sale of stock. Valkoviae is not obligated to sell the
            shares and, in the event the value of shares appreciates above the
            value of the above stated retainer, Valkoviae shall not be obligated
            to pay any surplus to HiEnergy. The payment of the retainer shall be
            conditional upon the delivery to management of monthly written
            reports of your activities and performance of the Services.

<PAGE>

Dr. Bogdan C. Maglich
Page 2 of 3

      3.    HiEnergy agrees to reimburse Valkoviae for all reasonable
            out-of-pocket expenses directly related to performance of the
            Services, provided that such expenses are agreed in writing in
            advance.

      4.    In addition to the compensation provided above, Valkoviae shall
            receive from HiEnergy success fees for non-investment related
            activities, as follows:

            o     With respect to the occurrence of other objectives or
                  transactions (e.g., introductions to strategic partners and
                  the formation of joint-ventures, alliances, etc.), HiEnergy
                  will pay Valkoviae a percentage of the net value of the
                  transaction consummated between HiEnergy and any party
                  introduced by Valkoviae, which remuneration will be determined
                  and mutually agreed upon by Valkoviae and HiEnergy, on a case
                  by case basis, during the course of this engagement.

            In the event there is a dispute as to the valuation of any
            transaction, business opportunity, joint-venture and/or alliance
            resulting from the activities of Valkoviae and accepted by HiEnergy,
            both parties agree to will rely mutually agreeable independent
            valuation agent and will honor the non-circumvention rights of the
            other as established under separate agreement during the period of
            said dispute.

      5.    If at any time within one (1) year following the termination of this
            engagement, or any extension hereof, a transaction occurs between
            HiEnergy and a party to whom HiEnergy was introduced by Valkoviae,
            Valkoviae shall be entitled to the remuneration previously
            stipulated in paragraph 4 above; provided that a written list of all
            introduced parties is provided to HiEnergy within fifteen (15)
            business days after the expiration or termination of this
            engagement.

      General Terms
      -------------

      6.    This engagement may be terminated by either party upon sixty (60)
            days written notice to the other.

      7.    Valkoviae will treat as confidential all information concerning
            HiEnergy that comes into its possession by reason of this engagement
            under the terms of a Proprietary Information Agreement dated
            February 13, 2006.

      8.    Valkovic will indemnify HiEnergy (including any affiliated companies
            and any of its affiliates, officers, directors, employees or
            controlling persons) from and against all claims, liabilities,
            losses, damages and expenses incurred that relate to or arise out of
            this engagement. Valkoviae will not, however, be responsible for any
            claims, liabilities, losses, damages or expenses to the extent that
            they result primarily from actions taken by HiEnergy through bad
            faith or negligence.

<PAGE>

Dr. Bogdan C. Maglich
Page 3 of 3

      9.    This engagement may not be assigned by either party without the
            express written consent of the other party. If any provision of this
            engagement is found to be illegal or invalid, the remaining
            provisions shall remain in full force and effect in accordance with
            their terms. No delay or omission by either party in exercising any
            right under this engagement shall operate as a waiver of that or any
            other right.

      10.   This engagement constitutes the entire agreement between the parties
            relating to the subject matter herein and supersedes all prior
            agreements and understandings between the parties, whether written
            or oral. This engagement may be amended or modified only by a
            written instrument executed by both parties. This engagement shall
            be governed by California law, without regard to its conflict of law
            provisions.

      11.   The benefits, obligations and liabilities assumed in this engagement
            by the parties hereto shall be binding upon their respective
            successors and assigns.

      12.   This engagement is renewable upon completion by mutual agreement.

Should HiEnergy Technologies, Inc. agree to proceed on this basis, please date,
sign and return the duplicate of this letter to me by facsimile.

Sincerely,

/s/ V. Valkovic                         February 16, 2006
------------------------------          -------------------
Dr. Vladivoj Valkovic                   Dated

/s/ Bogdan C. Maglich                   February 16, 2006
------------------------------          -------------------
Dr. BogdanMaglich CEO/Chairman          DatedINDEPENDENT CONTRACTOR AGREEMENT
                        --------------------------------

HiEnergy Technologies, Inc. ("HiEnergy"), a Delaware Corporation and Radiation
Safety Academy ("RSA"), a Maryland Corporation, hereby enter into this
independent contractor agreement related to manual and training program
development and services to be provided on the basis of Work Made For Hire as of
the last date following the signatures below (the "Agreement").

1.    DEFINITIONS.

"Agreement" means this Independent Contractor Agreement and any relevant
Statements of Work ("SOW"), Work Authorizations ("WA"), and other attachments or
appendices specifically referenced in, and incorporated as part of, this
Agreement.

"Deliverables" means items that RSA prepares for or provides to HiEnergy as
described in a SOW. Deliverables include Developed Work, Licensed Work,
Preexisting Materials, and Tools.

"Developed Work" means all work product (including Externals), developed in the
performance of this Agreement as described in a SOW. Developed Work does not
include Licensed Work, Preexisting Materials, Tools, or items specifically
excluded in a SOW.

"Enhancements" means changes or additions, other than Error Corrections, to the
Developed Work or Licensed Work.

"Error Corrections" means revisions that correct errors and deficiencies
(collectively referred to as "errors") in the Developed Work or Licensed Work.

"Externals" means any pictorial, graphic, audiovisual works, reports or data
generated by execution of software code and any programming interfaces,
languages or protocols.

"Licensed Work" is any material described in or that conforms to the Description
of Licensed Work in the relevant SOW, associated documentation, Externals, Error
Corrections, and Enhancements.

"Party" or "Parties" means either of HiEnergy or RSA and used singularly or
collectively hereinafter.

"Preexisting Materials" means items contained within a Deliverable, in which the
copyrights are owned by a third party or that RSA prepared or had prepared
outside the scope of this Agreement. Preexisting Materials exclude Tools, but
may include material that is created by the use of Tools.

"Prices" means the agreed upon payments and currency for Deliverables and
Services, including all applicable fees, royalty payments and taxes, as
specified in the relevant SOW.

                                   Page 1 of 8
<PAGE>

"Products" means an offering by HiEnergy to its customers or other users,
whether or not branded by HiEnergy or its Affiliates, that includes the
Developed Work, Licensed Work or a derivative work of a Licensed Work.

"Propietary and/or Confidential Information" means any information identified as
being Propietary and/or Confidential Information by either party, either orally
or in writing, at the time it is disclosed, or designated as confidential in
writing (either electronically or by other means) within 30 days of the
disclosure, provided that the information (a) was not publicly known or
generally in the public domain prior to the disclosure, (b) does not become
generally known or part of the public domain through any improper action or
disclosure by the receiving party, or (c) can be shown to have been in the
rightful possession of the receiving party prior to having been identified as
Propietary and/or Confidential Information by the disclosing party.

"Services" means work that RSA performs for HiEnergy as described in a SOW.

"Statement of Work" or "SOW" means any document that:

      1.    identifies itself as a statement of work;

      2.    is signed by both parties;

      3.    incorporates by reference the terms and conditions of this Base
            Agreement; and

      4.    describes the Deliverables and Services, including any requirements,
            specifications or schedules.

"Tools" means software that is not commercially available, and its Externals,
required for the development, maintenance or implementation of a Deliverable.

"Work Authorization" or "WA" means HiEnergy's authorization in either electronic
or tangible form for RSA to conduct transactions under this Agreement in
accordance with the applicable SOW (i.e., a purchase order, bill of lading, or
other HiEnergy designated document). A SOW is a WA only if designated as such in
writing by HiEnergy.

2.    WORK MADE FOR HIRE / RIGHTS TO WORK.

      a)    RSA understands and agrees that it is to perform and/or provide
            Services and Deliverables as detailed in the SOW(s) as Work Made for
            Hire.

      b)    RSA understands and agrees that the (i) Developed Work and any work
            product shall be the sole and exclusive property of HiEnergy (ii)
            RSA shall have no other rights whatsoever in or to the Developed
            Work, and any work product, including Error Corrections and
            Enhancements to Developed Work, delivered under the Agreement; and
            (iii) RSA shall not distribute, sell, or incorporate the Developed
            Work, and any derivative modifications or extensions of them.

                                  Page 2 of 8
<PAGE>

      c)    RSA agrees not to attach to the Developed Work any statements
            appearing thereon regarding copyright or proprietary rights of RSA.
            RSA shall not copy (in any form), distribute, sell, lease, assign,
            encumber, license or sub-license the Developed Work, and any work
            product to anyone other than HiEnergy. RSA hereby acknowledges and
            agrees that the Developed Work is to be incorporated into Products
            and sold and/or distributed to other users for commercial purposes
            by HiEnergy.

3.    TITLE AND COPYRIGHT ASSIGNMENT

      a)    The Developed Work, and any work product, including Error
            Corrections and Enhancements to Developed Work, delivered under the
            Agreement, and the results of the Services to be rendered by RSA
            hereunder, are Work Made for Hire. RSA acknowledges and agrees that
            the Developed Work (and all rights therein, including, without
            limitation, copyright) belongs to and shall be the sole and
            exclusive property of HiEnergy, subject to HiEnergy meeting its
            obligations herewith.

      b)    If for any reason the Developed Work would not be considered a work
            made for hire under applicable law, RSA does hereby sell, assign,
            and transfer to HiEnergy, its successors and assigns, the entire
            right, title and interest in and to the copyright in the Developed
            Work and any registrations and copyright applications relating
            thereto and any renewals and extensions thereof, and in and to all
            works based upon, derived from, or incorporating the Developed Work,
            and the entire right to all income, royalties, damages, claims and
            payments now or hereafter due or payable with respect thereto, and
            in and to all causes of action, either in law or in equity for past,
            present, or future infringement based on the copyrights, and in and
            to all rights corresponding to the foregoing.

      c)    If the Developed Work is one to which the provisions of 17 U.S.C.
            106A apply, the RSA hereby waives and appoints HiEnergy to assert on
            RSA's behalf the author's moral rights or any equivalent rights
            regarding the form or extent of any alteration to the Developed Work
            (including, without limitation, removal or destruction) or the
            making of any derivative works based on the Developed Work,
            including, without limitation, any reproductions of the Developed
            Work in any medium.

      d)    RSA agrees to execute all papers and to perform such other proper
            acts as HiEnergy may deem necessary to secure for HiEnergy or its
            designee the rights herein assigned.

4.    INDEPENDENT CONTRACTOR.

      a)    Nothing in this Agreement shall be construed to make the Parties
            partners, joint venturers, representatives, or agents of each other,
            nor shall either Party so hold itself out.

      b)    RSA shall be an independent contractor with respect to HiEnergy.
            HiEnergy shall not be responsible for withholding taxes with respect
            to RSA's compensation hereunder. RSA shall have no claim against
            HiEnergy for vacation pay, sick leave, retirement benefits, social
            security, worker's compensation, health or disability benefits,
            unemployment insurance benefits, or employee benefits of any kind.

                                  Page 3 of 8
<PAGE>

5.    PAYMENT AND CONSIDERATION TERMS.

      a)    Prices for Deliverables and Services are presented in the SOW.

      b)    Deliverables and Services HiEnergy may be paid or prepaid in the
            form of restricted stock, which is to be filed under a Registration
            Statement on Form S-8, with value equivalent to six (6) months of
            the above stated retainer, the pro-rata portion of time not served
            would be cancellable, or refundable to the Company, if RSA voluntary
            resigns and/or cancels the engagement, or RSA fails to perform the
            Services under the Engagement. In the event that the value of the
            stock falls between the date of receipt and the date you are able to
            liquidate such shares lawfully in the public market, the Company
            agrees to issue to you for no further consideration such additional
            number of shares as is equal to the dollar balance of compensation
            earned for which payment has not then been received directly or
            through the sale of stock. RSA is not obligated to sell the shares
            and, in the event the value of shares appreciates above the value
            equivalent to three (3) months of the above stated retainer, RSA
            shall not be obligated to pay any surplus to HiEnergy.

      c)    All invoices with claims for reimbursable expenses shall include
            sufficient detail and documentation to allow for verification of
            proper allocation of charges.

      d)    Both Parties may modify at any time the amounts to be paid by
            HiEnergy to RSA, so long as any and all such modifications shall be
            in writing and executed in acceptance by the Parties in order to be
            effective.

6.    NON-EXCLUSIVITY.

This Agreement is a non-exclusive agreement, and both parties remain free to
enter into similar agreements with third parties. In the event that RSA enters
into an agreement with a third party in which RSA performs work to an entity
involved in explosive bomb detection, RSA shall give notice to HiEnergy of that
agreement at or before the time RSA enters into such agreement. Nothing in this
Section 6 limits or supercedes any other provision herein.

7.    CONFIDENTIALITY

      a)    Both HiEnergy and RSA agree that during the term of this Agreement,
            each Party, may disclose to the other certain Propietary and/or
            Confidential Information. Either Party may designate any information
            it provides to the other as Propietary and/or Confidential
            Information, and the receiving party shall not disclose that
            information to third parties without the express permission of the
            disclosing party. Information designated as Propietary and/or
            Confidential Information shall remain confidential until the
            disclosing party designates it as non-confidential or until the
            information becomes public through no fault of the receiving party
            or illegal action.

                                  Page 4 of 8
<PAGE>

      b)    With regard to Propietary and/or Confidential Information disclosed
            by either Party, the receiving Party agrees to take all steps
            necessary to:

              i.  to protect such information to the extent normally used in
                  safeguarding its own proprietary information but in no event
                  less than a standard of reasonable care; and

              ii. to protect and prevent disclosure to and/or use by third
                  parties of any proprietary information of the other party; and

              iii.to hold all said proprietary information in confidence and not
                  to, directly or indirectly, copy, publish, summarize or
                  disclose to any person or entity such information without the
                  other party's prior written consent; and

              iv. to notify the Disclosing Party in writing within two (2)
                  working days of discovery of any inadvertent or accidental
                  disclosure of Propietary and/or Confidential Information,
                  without in any way limiting the other rights or remedies of
                  the Disclosing Party hereunder, and the Receiving Party shall
                  take all necessary precautions to avoid further dissemination
                  of the information disclosed, as well as corrective
                  precautions to prevent disclosure of any additional Propietary
                  and/or Confidential Information.

      c)    The Parties understand and agree that in the event either party
            breaches or threatens to breach the provisions of this section, such
            breach or threatened breach would cause irreparable harm to the
            non-breaching party, and that monetary damages would not be a
            sufficient remedy and that each Party shall be entitled to specific
            performance, including, without limitation, injunctive relief, as a
            remedy for any such breach by the other Party. Such remedy shall not
            be deemed to be the exclusive remedy for any breach but shall be in
            addition to all other remedies available at law or equity.

8.    QUALITY AND ACCEPTANCE.

      a)    RSA will provide the Deliverables and Services to HiEnergy in
            accordance with the specifications and timeline established in the
            SOW.

      b)    HiEnergy will review all Deliverables using its own quality
            assurance procedures, and may reject any Developed Work it
            reasonably believes does not meet its specifications.

      c)    In the event that errors or deficiencies are discovered in the
            Deliverables, RSA will use its best efforts to provide Error
            Corrections in an expeditious manner.

      d)    Payment by HiEnergy for Deliverables and Services by RSA shall not
            be deemed to be acceptance by HiEnergy thereof.

                                  Page 5 of 8
<PAGE>

9.    LIMITED WARRANTY.

      a)    RSA warrants that the best technical practices, skills, procedures,
            care and judgment will be employed and that the Developed Work will
            be completed in the most expeditious and economical manner in
            satisfaction of the SOW(s).

      b)    RSA warrants that it has the right and authority to enter into this
            Agreement, and that, to the best of RSA's knowledge, (i) the
            Developed Work will not infringe upon any copyright or other
            intellectual property interest of any third party and (ii) RSA will
            take all due and reasonable care to avoid infringing any copyright
            or other intellectual property interest of any third party.

            ALL WARRANTIES UNDER THIS AGREEMENT SHALL SURVIVE INSPECTION AND
            ACCEPTANCE, AND PAYMENT AND SHALL RUN TO HIENERGY, ITS AFFILIATES,
            SUCCESSORS AND ASSIGNS.

10.   ADDITIONAL OBLIGATIONS.

HiEnergy shall supply RSA with all technical and other documents deemed
necessary to enable RSA to fulfill its obligations; the failure of which shall
not prejudice RSA, nor be the cause of any forfeiture of any consideration due
RSA, insofar as (i) said failure was the cause of non-performance of RSA and
(ii) RSA satisfactorily performed its obligations upon reconcile.

11.   TERM AND TERMINATION.

This Agreement shall begin upon execution of both Parties ("Effective Date")
through termination in accordance with the terms of this Agreement. Time is of
the essence in performance of this Agreement. HiEnergy may terminate this
Agreement by thirty (30) days' written (electronic or other means) notice of
termination. HiEnergy shall pay RSA for any outstanding consideration owed RSA
for all services performed pursuant to the Agreement through the effective date
of termination.

12.   DISPUTES BETWEEN THE PARTIES.

      a)    The Parties will attempt in good faith to resolve, by negotiation or
            mediation, any controversy or claim regarding the rights and
            obligations under this Agreement or its breach. If the Parties are
            unable to do so, and regardless of the causes of action alleged, the
            claim will be resolved by arbitration in before a single arbitrator
            who is knowledgeable in independent contractor software development.
            Such arbitration will be conducted pursuant to the then current
            Commercial Rules of the American Arbitration Association and the
            federal substantive and procedural law of arbitration. The
            arbitrator's award will be final and binding, and may be entered in
            any court having jurisdiction thereof. The arbitrator shall not have
            the power to award punitive or exemplary damages. Each Party will
            bear its own attorneys' fees and costs related to the arbitration.
            Any claim or action must be brought within two years after the cause
            of action

                                  Page 6 of 8
<PAGE>

      b)    The rights and obligations of this Disputes section herein shall
            survive expiration, termination, or final payment under this
            Agreement.

13.   INDEMNITY.

      a)    HiEnergy shall defend, indemnify, and hold harmless RSA from and
            against any liability, suits, claims, losses, damages and judgments
            filed against RSA made in the United States related to this
            Agreement, provided that RSA promptly notifies HiEnergy of any and
            all such claims and provided that HiEnergy is given control over the
            defense of any and all such claims. The provisions of this Section
            shall survive the termination of this Agreement.

      b)    HiEnergy shall not be responsible for any claims brought against RSA
            related to actions taken by RSA outside the Agreement.

14.   LIMITATION ON LIABILITY.

      To the extent allowed by applicable law,

            EXCEPT FOR THE EXPRESS LIABILITIES HEREIN, IN NO EVENT WILL EITHER
            PARTY BE LIABLE FOR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS OR
            SAVINGS) OR INCIDENTAL DAMAGES, EVEN IF INFORMED OF THEIR
            POSSIBILITY; AND IN NO EVENT SHALL EITHER PARTY, ITS AGENTS,
            SUPPLIERS, DISTRIBUTORS, OR RESELLERS, BE LIABLE FOR ANY
            REPRESENTATION OR WARRANTY MADE TO ANY THIRD PARTY BY THE OTHER
            PARTY OR ITS AGENTS.

15.   MISCELLANEOUS.

      a)    Any notice under this Agreement shall be in English, in writing, and
            shall be deemed to be given upon receipt. Notices to HiEnergy shall
            be delivered to Contracts Manager, HiEnergy Technologies, Inc.,
            1601-B Alton Parkway, Irvine, CA 92606, USA. Notices to RSA shall be
            delivered to Greg Johnson, Radiation Safety Academy, 481 N.
            Frederick Avenue, Ste. 302, Gaithersburg, MD 20877.

      b)    This Agreement, including all SOW(s) and WA(s), constitutes the
            entire understanding of the Parties. This Agreement supersedes and
            terminates all prior representations, warranties and agreements,
            written or oral, regarding the subject matter of this Agreement. Any
            modification to this Agreement must be in a writing and executed by
            both Parties.

      c)    The headings within this Agreement are for convenience only and will
            not affect the interpretation of this Agreement. If one or more of
            the provisions contained in this Agreement is held invalid, illegal
            or unenforceable in any respect by any court of competent
            jurisdiction, such holding will not impair the validity, legality,
            or enforceability of the remaining provisions.

                                  Page 7 of 8
<PAGE>

      d)    Failure or delay on the part of any party to exercise any right,
            remedy, power or privilege hereunder will not operate as a waiver.
            Any waiver must be in writing and signed by the party granting such
            waiver in order to be effective.

      e)    Neither Party shall subcontract or assign this Agreement to any
            third party without the express written consent of other.

      f)    This agreement shall be construed and interpreted according to the
            laws of the State of California and shall be binding upon the
            parties hereto, their heirs, successors, assigns, and personal
            representatives; and references to RSA and to HiEnergy shall include
            their heirs, successors, assigns, and personal representatives.

IN WITNESS WHEREOF, the parties have duly executed this agreement.

RADIATION SAFETY ACADEMY                       HIENERGY TECHNOLOGIES, INC.

By:  /s/ Ray Johnson                           By:  /s/ Bogdan C. Maglich
   -----------------------------                  -----------------------------
Name:    Ray Johnson                           Name:   Bogdan C. Maglich
Title:   Director                              Title:  Chairman & CEO

Date: February 7, 2006                         Date: Feb. 8, 2006
      ----------------                               ------------

                                  Page 8 of 8

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