Document:

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                                  EXHIBIT 10.13

                             STOCK OPTION AGREEMENT
                           (NONQUALIFIED STOCK OPTION)

OPTIONEE:                    Primoris  Group  Inc.,  an  Ontario  corporation

NUMBER  OF  SHARES:          400,000

OPTION  EXERCISE  PRICE:     $2.00  per  Share

DATE  OF  GRANT:             August  1,  2002

EXERCISE  TERM:              Two  Years  from  the  Date  of  Grant

VESTING  SCHEDULE:           Immediate

     THIS OPTION AGREEMENT (the "AGREEMENT") is entered into effective as of the
1st day of August, 2002 by and between HIENERGY TECHNOLOGIES, INC. (formerly SLW
Enterprises  Inc.) (the "Company"), a Washington corporation, and the individual
designated  above  (the  "Optionee").

                                    RECITALS
                                    --------

     WHEREAS,  a  consulting agreement (the "Consulting Agreement") was executed
between the Optionee and the Company on August 1, 2002, wherein the Optionee has
agreed  to  perform  valuable  services  for  the  Company;  and

     WHEREAS,  pursuant  to Section 6.5 of the Consulting Agreement, the Company
agreed  to  issue  the  Optionee  an  option  to  purchase 400,000 shares of the
Company's  common  stock  at an exercise price of $2.00 per share with a term of
two  years;

     NOW,  THEREFORE,  in consideration of the premises and the mutual covenants
and  agreements  set  forth  herein,  the  parties  hereto  agree  as  follows:

1.     GRANT  OF  OPTION.

1.1     Option.  An option to purchase shares of the Company's Common Stock, par
        ------
     value  $0.0001  per share, (the "Shares") is hereby granted to the Optionee
(the  "Option").

1.2     Number  of  Shares.  The number of Shares that the Optionee can purchase
        ------------------
upon  exercise  of  the  Option  is  set  forth  above.

1.3     Option  Exercise Price.  The price the Optionee must pay to exercise the
        ----------------------
Option  (the  "Option  Exercise  Price")  is  set  forth  above.

                                     Page 1

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1.4     Date  of Grant.  The date the Option is granted (the "Date of Grant") is
        --------------
set  forth  above.

1.5     Type  of  Option.  The  Option  is  intended  to be a Nonqualified Stock
        ----------------
Option.  It  is  not intended to qualify as an Incentive Stock Option within the
meaning  of  Section  422  of the Internal Revenue Code of 1986, as amended from
time  to  time,  or  any  successor  provision  thereto.

1.6     Condition.  The  Option  is  conditioned  on the Optionee's execution of
        ---------
this  Agreement.  If  this  Agreement is not executed by the Optionee, it may be
canceled  by  the  Board.

2.     DURATION.

     The  Option  shall  be exercisable to the extent and in the manner provided
herein  during  the  Exercise Term, which is set forth above; provided, however,
that  the  Option  may  be  earlier  terminated  as  provided  herein  or in the
Consulting  Agreement.  The  Exercise Term shall be extended by such period that
the  Optionee  is restricted by an underwritten public offering from selling its
Shares.

3.     VESTING.

     The  Option  is  fully  vested.

4.     MANNER  OF  EXERCISE  AND  PAYMENT.

4.1     To  exercise  the  Option, the Optionee must deliver a completed copy of
the Option Exercise Form, attached hereto as Exhibit A, to the address indicated
on  such Form or such other address designated by the Company from time to time.
Contemporaneously  with  the  delivery of the Option Exercise Form, the Optionee
shall  tender  the  Option  Exercise  Price to the Company, by cash or certified
funds  at  the time of each exercise of the Option. All checks shall be drawn to
the order of the Company. The Option may be exercised in whole at any time or in
part in multiples of 100 Shares as specified in the Option Exercise Form. Within
five (5) business days of delivery of the Option Exercise Form and tender of the
Option  Exercise  Price,  the  Company shall deliver certificates evidencing the
Shares  to  the  Optionee,  duly endorsed for transfer to the Optionee, free and
clear  of  all  liens,  security  interests, pledges or other claims or charges.

4.2     The  Optionee shall not be deemed to be the holder of, or to have any of
the  rights  of  a holder with respect to any Shares subject to the Option until
(i) the Option shall have been exercised pursuant to the terms of this Agreement
and  the  Optionee  shall  have  paid  the full purchase price for the number of
Shares in respect of which the Option was exercised, (ii) the Company shall have
issued  and  delivered the Shares to the Optionee, and (iii) the Optionee's name
shall  have been entered as a stockholder of record on the books of the Company,
whereupon  the  Optionee  shall have full voting and other ownership rights with
respect  to  such  Shares.

                                     Page 2
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5.     TERMINATION.

     If  the  Optionee's status as a Consultant terminates at any time after the
grant  of  the  Option  for  any  reason  except  pursuant to Section 7.2 of the
Consulting  Agreement, then any vested options shall terminate on the expiration
date otherwise provided in this Agreement. Any nonvested options shall terminate
immediately  upon  termination  of  the  Consulting Agreement. If the Optionee's
status  as  a Consultant is terminated pursuant to Section 7.2 of the Consulting
Agreement,  then  any  options  that  have  been  granted  to the Optionee shall
terminate  on  the  date  of  termination  of  the  Consulting  Agreement.

6.     TRANSFERABILITY.

     The  Optionee  is  expressly  prohibited  from  transferring  this  Option.

7.     RESTRICTIONS  ON  THE  OPTIONS;  RESTRICTIONS  ON  THE SHARES.

     The  Option  may  not  be  exercised  at any time unless, in the opinion of
counsel  for  the  Company, the issuance and sale of the Shares issued upon such
exercise  is  exempt  from  registration  under  the  Securities Act of 1933, as
amended,  or  any  other  applicable  federal  or  state securities law, rule or
regulation,  or  the  Shares  have  been  duly  registered under such laws.  The
Company  shall not be required to register the Shares issuable upon the exercise
of the Option under any such laws.  Unless the Shares have been registered under
all  applicable  laws,  the  Optionee  shall  represent, warrant and agree, as a
condition to the exercise of the Option, that the Shares are being purchased for
investment  only  and  without a view to any sale or distribution of such Shares
and  that  such  Shares  shall  not  be transferred or disposed of in any manner
without  registration  under  such laws, unless it is the opinion of counsel for
the  Company  that  such  a  disposition  is exempt from such registration.  The
Optionee  acknowledges  that  an appropriate legend, in such form as the Company
shall  determine,  giving  notice  of  the  foregoing  restrictions shall appear
conspicuously on all certificates evidencing the Shares issued upon the exercise
of  the  Option.  The  Company  may,  in its sole discretion, place a "Blue Sky"
legend  on  the certificates in accordance with U.S. state securities laws or as
required  by  applicable  securities  laws.

     The  Optionee  also  acknowledges  and  agrees that, in connection with any
underwritten  public offering of the Company's stock during the Exercise Term of
the  Option,  upon  request of the underwriters managing any underwritten public
offering of the Company's stock and making such request with the approval of the
Company's  Board  of Directors, not to sell, make any short sale of, loan, grant
any  option  for  the  purchase  of,  or  otherwise dispose of any of its Shares
without  the  prior written consent of such underwriters from the effective date
of  such  registration  for  so long as the underwriters may specify, but in any
event not to exceed 180 days. The Exercise Term shall be extended by such period
that  the Optionee is restricted by an underwritten public offering from selling
its  Shares.

                                     Page 3

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8.     PIGGYBACK  REGISTRATION  RIGHTS.

     The  Optionee  shall  have  such registration rights as are provided in the
Registration  Rights  Agreement, the form of which is attached hereto as Exhibit
B,  subject to the execution of this Agreement and the issuance of the Option to
the  Optionee.

9.     NO  RIGHT  TO  CONTINUED  STATUS  AS  CONSULTANT.

     Nothing  in this Agreement shall be interpreted or construed to confer upon
the  Optionee  any  right  with  respect  to continuance as a Consultant for the
Company  or  any Parent or Subsidiary, nor shall this Agreement interfere in any
way  with  the  right  of the Company or a Parent or Subsidiary to terminate the
Optionee's  status  as  a  Consultant  at  any  time.

10.     ADJUSTMENTS  UPON  CERTAIN  EVENTS.

10.1.     Adjustments  Upon  Changes in Capitalization.  Subject to any required
          --------------------------------------------
action  by  the  shareholders  of  the  Company,  the  event  of  a  change  in
capitalization,  such  as a stock split or other subdivision or consolidation of
Shares  or  the  payment of any stock dividend consisting of Shares or any other
increase  or  decrease  in  the  number  of  Shares  effected without receipt of
consideration  by  the  Company,  the  Company  shall  make  appropriate  and
proportionate  adjustments  to  the  number  and  class of Shares subject to the
Option  and  the  purchase  price  for such Shares or other stock or securities;
provided, however, that conversion of the Option will not be deemed to have been
"effected  without  receipt  of consideration". Any adjustments as a result of a
change  in  the Company's capitalization will be made by the Board of Directors,
whose  determination in that respect is final, binding and conclusive. Except as
otherwise  expressly  provided in this Section 10.1, any issue by the Company of
shares  of stock of any class, or securities convertible into shares of stock of
any  class,  shall  not affect the number of Shares or the exercise price of the
Shares  subject to the Option, and no adjustments in the Option shall be made by
reason thereof. The grant of this Option does not in any way affect the right or
power  of the Company to make adjustments, reclassifications, reorganizations or
changes  of  its  capital  or  business  structure.

10.2.     Liquidation  or  Dissolution.  In  the  event  of  a  liquidation  or
          ----------------------------
dissolution,  any unexercised options will terminate. The Optionee will have the
right  to exercise any vested portion of the Option prior to the consummation of
the  liquidation  or  dissolution.  The  Company  will provide the Optionee with
notice  of  the Board of Directors' decision to liquidate or dissolve as soon as
practicable  after  such  a  decision  has  been  made.

10.3.     Change  of  Control, Merger, Sale of Assets, Etc.  In the event of the
          ------------------------------------------------
sale  or other transfer of the outstanding shares of stock of the Company in one
transaction or a series of related transactions or a merger or reorganization of
the  Company with or into any other corporation, where immediately following the
transaction,  those  persons  who  were  shareholders of the Company immediately
before  the  transaction  control  less  than  50%  of  the

                                     Page 4

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voting  power  of the surviving organization (a "change of control event") or in
the  event  of a proposed sale of substantially all of the assets of the Company
(collectively, "sale transaction"), the Option shall be assumed or replaced with
a  substitute  equivalent  option.

11.     WITHHOLDINGS  TAXES.

     The Company shall have the right to deduct from any distribution of cash to
the  Optionee  an  amount equal to the federal, state and local income taxes and
other  amounts  as  may  be  required  by  law to be withheld (the "Withholdings
Taxes")  with  respect  to  the  Option.  If the Optionee is entitled to receive
Shares  upon  exercise  of  the  Option, the Optionee shall pay the Withholdings
Taxes  (if  any) to the Company in cash prior to the issuance of such Shares. In
satisfaction of the Withholdings Taxes, the Optionee may make a written election
(the "Tax Election"), which may be accepted or rejected in the discretion of the
Company,  to  have withheld a portion of the Shares issuable to it upon exercise
of  the  Option, having an aggregate Fair Market Value equal to the Withholdings
Taxes,  provided that, if the Optionee may be subject to liability under Section
16(b)  of  the  Exchange  Act,  the  election  must comply with the requirements
applicable  to  Share  transactions  by  such  Optionees.

12.     MODIFICATION  OF  AGREEMENT.

     This  Agreement  may be modified, amended, suspended or terminated, and any
terms  or conditions may be waived, only by a written instrument executed by the
parties  hereto.

13.     SEVERABILITY.

     Should  any  provision  of  this  Agreement be held by a court of competent
jurisdiction  to  be  unenforceable  or  invalid  for  any reason, the remaining
provisions  of  this  Agreement shall not be affected by such holdings and shall
continue  in  full  force  in  accordance  with  their  terms.

14.     NOTICES.

     Any  notice  required  or permitted to be given hereunder shall be given by
hand  delivery,  facsimile  transmission or by registered mail, postage prepaid,
addressed  to  the parties at their respective addresses as set forth below. Any
such notices given by hand delivery or by facsimile transmission shall be deemed
to  have  been  received on the date of delivery or transmission and if given by
prepaid  registered  mail,  shall  be  deemed to have been received on the third
(3rd)  business day immediately following the date of mailing. The parties shall
be  entitled  to  give  notice  of changes of addresses from time to time in the
manner  hereinbefore  provided  for  the  giving  of  notice.

If  for  the  Company:     HiEnergy  Technologies,  Inc.
                           10 Mauchly  Drive

                                      5
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                           Irvine,  CA  92618
                           Attn:  President
                           Tel:  949.727.3389
                           Fax:  949.727.3288

If  for  the  Optionee:    Primoris  Group  Inc.
                           44  Victoria  Street,  Suite  1417
                           Toronto,  ON  M5C  1Y2
                           Tel:  416.489.0092
                           Fax:  416.544.9259

Such  address  may  be  changed  from  time to time by either party by providing
written  notice  to  the  other  in  the  manner  set  forth  above.

15.     GOVERNING  LAW.

     The  validity,  interpretation,  construction  and  performance  of  this
Agreement  shall  be  governed  by  the  laws of the State of California without
giving  effect  to  the  conflicts  of  laws  principles  thereof.

16.     SUCCESSORS  IN  INTEREST.

     This  Agreement  shall  be  binding  upon, and inure to the benefit of, the
Company  and its successors and assigns, and the Optionee and its successors and
permitted  assigns,  and  upon  any  person  acquiring,  whether  by  merger,
consolidation, reorganization, purchase of stock or assets, or otherwise, all or
substantially  all  of  the Company's and/or the Optionee's assets and business.
This  Agreement  shall  inure  to  the benefit of the Optionee's heirs and legal
representatives.  All  obligations  imposed  upon  the  Optionee  and all rights
granted  to  the  Company  under  this  Agreement  shall  be  final, binding and
conclusive  upon  the  Optionee's  successors.

17.     RESOLUTION  OF  DISPUTES.

     Any dispute or disagreement which may arise under, or as a result of, or in
any  way  relate  to,  the  interpretation,  construction or application of this
Agreement  shall  be  determined  by the Board of Directors of the Company.  Any
determination  made  hereunder  shall  be  final,  binding and conclusive on the
Optionee  and  the  Company  for  all  purposes.

                  [REMAINDER  OF  PAGE  INTENTIONALLY  LEFT  BLANK]

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

                                THE  COMPANY:

                                      HIENERGY  TECHNOLOGIES,  INC.

                                      By:     /s/  Barry  Alter
                                            ----------------------------
                                              Barry  Alter,  President  and  CEO

                                THE  OPTIONEE:

                                      PRIMORIS  GROUP  INC.

                                     By:     /s/  Joseph  Carusone
                                            ----------------------------
                                             Joseph  Carusone,  President

                               [EXHIBIT  FOLLOWS]

                                     Page 7

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                                    EXHIBIT A

                              OPTION EXERCISE FORM
                              --------------------

To:  HiEnergy  Technologies,  Inc.

     (1)  The  undersigned  hereby  elects  to  purchase the number of shares of
          common  stock of HiEnergy Technologies, Inc. (the "Company") set forth
          below, pursuant to the terms of the Stock Option Agreement executed on
          August  1,  2002,  tendering  simultaneous  full  payment of the Total
          Option  Exercise  Price  for  such  shares.

          Number  of  Shares:                      ________________  Shares

          Option  Exercise  Price  Per  Share:     x  $____________  per  Share

          Total  Option  Exercise  Price:           =  $____________

(2)       In exercising this Option,  the  undersigned  hereby  confirms  and
          acknowledges  that:

     a)   the  shares  of  Common  Stock  to  be  issued upon exercise are being
          acquired  solely  for  the  account  of  the  undersigned and not as a
          nominee  for  any  other  party;  and

     b)   the shares of Common Stock to be issued upon exercise are not acquired
          with  a  view  toward  distribution;  and

     c)   the undersigned is an "accredited investor" as that term is defined in
          Rule 501 of Regulation D under the Securities Act of 1933, as amended,
          or  is  a  non-United  States'  citizen or entity residing outside the
          United  States;  and

     d)   the  undersigned will not offer, sell or otherwise dispose of any such
          shares  of  Common Stock except pursuant to an effective registration,
          or  an  exemption  therefrom,  under  the  Securities  Act of 1933, as
          amended,  together  with a similar exemption under the securities laws
          of  all  applicable  jurisdictions;  and

     e)   the  undersigned  otherwise reaffirms all representations, warranties,
          and  indemnifications  contained  in  the  Stock Option Agreement; and

     f)   the  undersigned has reviewed all of the Company's public filings with
          the  Securities  and  Exchange  Commission;  and

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     g)   the undersigned consents to delay the exercise of the Option until, in
          the  Company's  judgment,  the  Company  has  disclosed any additional
          material  information  that  needs to be disclosed to the undersigned,
          beyond  those  contained in the public filings with the Securities and
          Exchange  Commission.

(3)     Subject  to  Section  (2),  please  issue  a certificate or certificates
representing  said  shares  of  Common  Stock  in the name of the undersigned as
instructed.

(4)     Please  issue  a  new Option for the unexercised portion of the attached
Option  in  the  name  of  the  undersigned.

This  _____  day  of  __________________,  _____:

PRIMORIS  GROUP  INC.

By:  _______________________________________________
                        Signature

____________________________________________________
               Print  Name  of  Signatory

____________________________________________________
        Title  or  Position  of  Signatory

Send  or  deliver  this  Form  with  an  original  signature  to:

HiEnergy  Technologies,  Inc.
Attn:  President
10  Mauchly  Drive
Irvine,  CA  92618
USA
Fax:  949.727.3288

<PAGE><PAGE>

                                          EXHIBIT 10.15

[HiEnergy  Technologies,  Inc.  Letterhead]

February  26,  2002

Ms.  Michal  Levy
154  N.  Pass  Avenue  #114
Burbank,  CA  91505

Dear  Micky,

It  is  my  pleasure  to  offer  you  the  position  of Vice President/Corporate
Secretary  for  HiEnergy  Microdevices, Inc.  Your primary responsibilities will
be:
     -    Corporate  secretary
     -    Public  relations
     -    Investor  relations
     -    Technical  writing

Initially  the  position  will  be part-time, averaging 2.5 days per week.  Your
near-term  priorities  in  order  are:
     -    Obtain  the  accreditation  status  of  all  HiEnergy  stockholders
     -    Work  to  insure that all unaccredited investors are sophisticated and
          we  have  received  appropriate  certification
     -    Assist  Dr.  Maglich  with  technical  writing  on proposals and white
          papers
     -    Prepare  public relations/investor relations campaign to coincide with
          closing  of  the  transaction
     -    Update  web  site

Your  compensation  consists  of  the  following:
     -    $3500  per  month  (while  part-time)
     -    1000  shares of HiEnergy stock to be granted at the rate of 250 shares
          per  quarter,  beginning  February  24, 2002, so long as you remain an
          employee  of  the  Company  at  the  end  of  each  quarter
     -    Options  to  purchase  4,000 shares of HiEnergy stock (after any split
          associated  with  the  planned  transaction)  at  the  market price as
          determined by the current investment. The option will vest in one year

After three months, your employment and company requirements will be reviewed to
determine  if  full-time  employment  is  warranted.

The  board  of  directors  must  approve  your  appointment  as  vice president,
corporate  secretary and stock grant. Granting of stock options is contingent on
approval  of  the  board of directors and approval of a stock option plan by the
shareholders.  It  is  understood  that you are beginning employment before that
approval  and  only  your  salary  can  be  guaranteed  at  this  time.

<PAGE>

I  look  forward to working with you to bring this exciting technology to market
and  making  the  Company  a  great  success.

Sincerely,

/s/  Keith  S.  Cowan

Keith  S.  Cowan
President  and  Chief  Executive  Officer

Accepted:

/s/  Michal  Levy
------------------------------
Michal  Levy

Date:2/26/02
------------------------------

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