EXHIBIT 10.49

                            STOCK PURCHASE AGREEMENT

         This STOCK  PURCHASE  AGREEMENT  ("Agreement")  is dated June 16,  2003
between Yocca Patch & Yocca, LLP ("Purchaser"), and HiEnergy Technologies, Inc.,
a Delaware corporation ("Company").

                  1. PURCHASE AND SALE.  Purchaser agrees to buy and the Company
agrees to sell and issue to Purchaser 300,000 shares of the Company's authorized
and previously unissued common stock, par value $0.001 per share (the "Shares"),
at a  price  of  $0.33  1/3  per  share,  for an  aggregate  purchase  price  of
$100,000.00 (the "Purchase Price").

                  2.  REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company
hereby makes the following representations and warranties to the Purchaser:

                  (a) Registered Offering. The offer and sale of the Shares have
been  registered  on  a  Form  SB-2  registration  statement,  Registration  No.
333-101055  ("Registration  Statement"),  which Registration  Statement has been
declared effective by the Securities and Exchange  Commission (the "Commission")
and the  Company  has not  received  notice  that the  Commission  has issued or
intends to issue a stop order with  respect to the  Registration  Statements  or
that the Commission  otherwise has suspended or withdrawn the  effectiveness  of
the Registration  Statements,  either temporarily or permanently,  or intends or
has  threatened  in writing to do so. The Company has delivered to Purchaser the
prospectus that constitutes a part of the Registration Statement.

                  (b)   Organization  and   Qualification.   The  Company  is  a
corporation duly  incorporated,  validly existing and in good standing under the
laws of the State of Delaware with the requisite  corporate  power and authority
to own and use its  properties  and  assets  and to  carry  on its  business  as
currently conducted. The Company is duly qualified to conduct business and is in
good standing as a foreign  corporation or other entity in each  jurisdiction in
which the nature of the business  conducted  or property  owned by it makes such
qualification necessary.

                  (c)  Authorization.  The Company has the  requisite  corporate
power  and  authority  to  enter  into  and  to  consummate   the   transactions
contemplated  by this  Agreement  and  otherwise  to carry  out its  obligations
hereunder.  The execution and delivery of this  Agreement by the Company and the
consummation of the transaction contemplated hereby have been duly authorized by
all  necessary  action  on the part of the  Company  and no  further  action  is
required  by the  Company or its  shareholders  for the  Company to execute  and
consummate  this  Agreement  and  the  transactions  contemplated  hereby.  This
Agreement  has  been  duly  executed  by the  Company  and,  when  delivered  in
accordance with the terms hereof, and assuming the valid execution hereof by the
Purchaser,  will  constitute  the valid and  binding  obligation  of the Company
enforceable against the Company in accordance with its terms, except (a) as such
enforceability  may be  limited by  bankruptcy,  insolvency,  reorganization  or
similar laws affecting creditors' rights generally, (b) as enforceability of any
indemnification and contribution provisions may be limited under the federal and
state  securities  laws and public  policy,  and (c) that the remedy of specific
performance and injunctive and other forms of equitable relief may





be subject to equitable defenses and to the discretion of the court before which
any proceeding therefor may be brought.

                  (d) No Conflicts.  The execution,  delivery and performance of
this  Agreement  by the  Company  and the  consummation  by the  Company  of the
transactions  contemplated  hereby does not and will not: (i)  conflict  with or
violate any provision of the Company's  certificate of  incorporation  or bylaws
(each as amended through the date hereof),  or (ii) conflict with, or constitute
a default (or an event which with notice or lapse of time or both would become a
default)  under,  or give to others  any  rights of  termination,  amendment  or
acceleration  (with or without  notice,  lapse of time or both) of, any material
agreement  or  indebtedness  to which  the  Company  is a party or by which  any
material property or asset of the Company is bound or affected,  or (iii) result
in a violation of any law, rule, regulation,  order,  judgment,  decree or other
restriction  of any court,  governmental  authority or stock market to which the
Company or the Common Stock is subject.

                  (e)  Issuance  of the Shares.  The Shares are duly  authorized
and,  when  issued and paid for in  accordance  with the terms  hereof,  will be
legally issued,  fully paid and  nonassessable,  free and clear of all liens and
encumbrances  (other  than any that are the result of any action or  inaction of
the Purchaser).

                  (f)  Disclosure.  Neither  the  Company  nor any other  Person
acting on its behalf has provided the  Purchaser or their agents or counsel with
any information  that constitutes or may, in the Company's  opinion,  constitute
material non-public information.  If any such information whatsoever is provided
to  Purchaser,  knowledge  thereof  will not be  imputed  to any of  Purchaser's
partners unless such partner has actual knowledge.

                  (g) Client  Waiver.  The  Company  has had an  opportunity  to
consult  independent  legal counsel and advisors  regarding this Agreement.  The
Company  understands  that the Purchaser cannot advise the Company on whether to
enter into this Agreement to sell Shares. The Company is knowledgeable about the
Purchaser's  financial  interests in this  transaction,  and has determined that
this transaction is in the best interests of the Company,  hereby waives any and
all conflict of interests, and hereby knowingly consents to this transaction.

                  3.  REPRESENTATIONS  AND  WARRANTIES  OF  THE  PURCHASER.  The
Purchaser hereby represents and warrants to the Company as follows:

                  (a)  Organization;   Authorization.  The  Purchaser  has  been
organized  and is in good  standing  under the laws of the  jurisdiction  of its
formation.  The Purchaser has the requisite right,  power and authority to enter
into this Agreement and to consummate the transactions contemplated hereby. Upon
the execution and delivery of this  Agreement,  and assuming the valid execution
thereof by the Company,  this Agreement  shall  constitute the valid and binding
obligation  of the  Purchaser,  enforceable  against the Purchaser in accordance
with its terms,  except (a) as such enforceability may be limited by bankruptcy,
insolvency,   reorganization   or  similar  laws  affecting   creditors'  rights
generally,  (b)  as  enforceability  of  any  indemnification  and  contribution
provisions may be limited under the federal and state securities laws and public



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policy, and (c) that the remedy of specific performance and injunctive and other
forms of  equitable  relief  may be  subject to  equitable  defenses  and to the
discretion of the court before which any proceeding therefor may be brought.

                  (b) No Conflicts.  The execution,  delivery and performance of
this  Agreement by the  Purchaser and the  consummation  by the Purchaser of the
transactions  contemplated  hereby  does not and will not (i)  conflict  with or
violate  any  provision  of  the   Purchaser's   or  Company's   certificate  of
incorporation  or bylaws  (each as amended  through  the date  hereof),  or (ii)
conflict  with,  or constitute a default (or an event which with notice or lapse
of time or both would become a default)  under,  or give to others any rights of
termination, amendment or acceleration (with or without notice, lapse of time or
both) of, any material  agreement or  indebtedness  to which the  Purchaser is a
party or by which any  material  property or asset of the  Purchaser is bound or
affected, or (iii) result in a violation of any order, judgment or decree of any
court to which the Purchaser is subject.

                  (c) Investment  Representation.  The Purchaser is not party to
any agreement or arrangement  with respect to a disposition of Shares other than
this  Agreement.  The Purchaser is not registered as a  broker-dealer  under the
Exchange  Act. The Purchaser is purchasing  the Shares for the  Purchaser's  own
account,  for  investment  purposes  only and not with a view to  distribute  or
participate   in  a   distribution   thereof;   provided,   that  the  foregoing
representation  and warranty is not an  agreement  by the  Purchaser to hold the
Shares for any period of time.

                  4. PAYMENT.  On the Closing Day, the Purchaser will credit the
Purchase Price against  accrued legal fees  chargeable by Purchaser to Seller as
if Seller  made a payment of such amount in the  ordinary  course on the Closing
Day. On the Closing  Day, the Company  will  deliver to the  Purchaser,  via the
Purchaser's DTC Accounts through the Depository  Trust Company DWAC system,  the
number of Shares set forth hereinbelow:

                  100,000 shares to DTC #0044 Account # 377 27481 100,000 shares
                  to DTC #0221 Account # UJ38541-HM  100,000 shares to DTC #0221
                  Account # UJ38539-HM

                  The term "Closing Day" shall mean June 17, 2003.

                  5. INTENTIONALLY OMITTED

                  6. INTENTIONALLY OMITTED

                  7. COUNTERPARTS. This Agreement may be executed in two or more
counterparts,  all of which shall be considered  one and the same  agreement and
shall  become  effective  when  counterparts  have been signed by each party and
delivered to the other party.  This Agreement,  once executed by a party, may be
delivered to the other party hereto by facsimile  transmission of a copy of this
Agreement bearing the signature of the party so delivering this Agreement, which
shall be deemed  fully  valid and  binding.  The  parties  also agree to forward
promptly  their  original  signature  on a copy of this  Agreement  to the other
party.




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                  8.  ENTIRE  AGREEMENT.  This  Agreement  contains  the  entire
understanding  of the parties  with respect to the matters  covered  herein and,
except as specifically  set forth herein,  neither the Company nor the Purchaser
make any representation,  warranty, covenant or undertaking with respect to such
matters.  No  provision  of  this  Agreement  may be  amended  other  than by an
instrument in writing signed by the Company and Purchaser.

                  9.  SEVERABILITY.  In the  event  that any  provision  of this
Agreement  shall be  determined to be invalid or  unenforceable  by any court of
competent  jurisdiction,  the remainder of this agreement  shall not be affected
thereby,  and any invalid or unenforceable  provision shall be reformed so as to
be valid and enforceable to the full extent permitted by law.

         IN WITNESS WHEREOF,  the parties hereto have caused this Stock Purchase
Agreement to be duly executed by their respective  authorized  signatories as of
the date first indicated above.


                          COMPANY:

                           HIENERGY TECHNOLOGIES, INC.

                            By: /s/ Bogdan C. Maglich
                             -----------------------------------------
                             Name: Bogdan C. Maglich
                          Title: Chairman, Chief Executive Officer and Treasurer

                          PURCHASER:

                            YOCCA PATCH & YOCCA, LLP

                            By: /s/ Nicholas J. Yocca
                             -------------------------------------------------
                             Name: Nicholas J. Yocca
                          Title: Partner

                          Address:
                           19900 MacArthur Blvd., #650
                          Irvine, CA  92612


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