Document:

Exhibit 10.23

                             STOCK OPTION AGREEMENT

        THIS STOCK OPTION  AGREEMENT is entered into as of April 9, 2001, by and
between  TSET,  Inc.,  a Nevada  corporation  ("TSET"),  and  Jeffrey D.  Wilson
("Wilson").

                                   WITNESSETH:

        WHEREAS,  TSET  desires  to grant to Wilson an option to  acquire  up to
350,000  restricted  shares of TSET's common  stock,  par value $0.001 per share
(the "Option Shares"), in consideration of valuable contributions made by Wilson
to TSET and its wholly-owned subsidiaries; and

        WHEREAS, Wilson desires to accept such option.

        NOW,  THEREFORE,  for and in  consideration  of the  premises and mutual
promises,  covenants,  and  agreements  set forth  herein and for other good and
valuable  consideration,  the delivery,  receipt,  and  sufficiency  of which is
hereby acknowledged, the parties hereto agree as follows:

<PAGE>

         1.  GRANT OF  OPTION.  TSET  hereby  grants to  Wilson  an option  (the
             "Option")  to acquire  the Option  Shares at an  exercise  price of
             $0.885  per  share  (the  "Exercise   Price").   The  Option  shall
             immediately  and fully vest in Wilson's favor for all purposes upon
             execution  and delivery of this  Agreement  by the  parties,  as to
             125,000  Option Shares.  The remaining  225,000 Option Shares shall
             vest  immediately  upon (a) an announcement by TSET's  wholly-owned
             subsidiary,  Kronos Air Technologies,  Inc., of a significant order
             purchase order for devices  embodying the KronosTM  technology,  or
             (b)   TSET's   shares   of   common   stock,   as   traded  on  the
             over-the-counter  bulletin  board  exchange,  achieving  a price of
             $2.00 per  share.  The  Option  is  personal  to Wilson  and may be
             exercised  only by Wilson  during his  lifetime.  The Option  shall
             continue in full force and effect for a period of 10 years from the
             date hereof (the "Term"), at which time the Option shall expire and
             terminate unless previously  exercised by Wilson.  The Option shall
             not be subject to  forfeiture or  termination,  except for Wilson's
             failure to exercise the Option during the Term.

         2.  EXERCISE OF OPTION. The Option may be exercised by Wilson, in whole
             or in part,  at any time  during  the Term upon  receipt by TSET of
             written  notice from Wilson (the "Exercise  Notice").  The Exercise
             Notice shall specify the number of Option Shares Wilson  desires to
             acquire  pursuant  thereto and provide any necessary or appropriate
             instructions   to  TSET  and  its  transfer  agent   regarding  the
             denomination of certificates representing the Option Shares and the
             name in which the Option Shares should be registered.  The exercise
             of the Option shall be on a  "cashless"  basis and Wilson shall not
             be required to remit to TSET any payment therefor.

         3.  RESERVATION  OF THE OPTION  SHARES.  To ensure  fulfillment  of its
             obligations  hereunder  should Wilson elect to exercise the Option,
             TSET shall reserve from its  authorized  but unissued  capital that
             number of shares of its common stock equal to the Option Shares.

         4.  RESTRICTIONS  ON  TRANSFER.  Wilson  acknowledges  that the  Option
             Shares are  subject  to certain  restrictions  upon  transfer,  and
             cannot be sold, assigned,  transferred, or conveyed (in any case, a
             "transfer")   except  in  compliance  with  such  restrictions  and
             applicable   provisions  of  federal  and  state  securities  laws.
             Certificates  representing the Option Shares shall bear appropriate
             restrictive  legends and notices.  In the event  Wilson  desires to
             transfer  any  Option  Shares  prior  to  the  expiration  of  such
             restrictions, TSET shall be entitled to receive from Wilson written
             undertakings,   certifications,   or  opinions  of  legal   counsel
             evidencing compliance with such restrictions.

         5.  TAX MATTERS.  Wilson acknowledges that treatment of the Option, the
             Option Shares, and events or transactions with respect thereto, for
             federal and state income and other tax purposes,  is dependent upon
             various  factors  and  events  which  are  not  determined  by this
             Agreement. TSET makes no representations to Wilson with respect to,
             and  hereby  disclaims  any and all  responsibility  as to such tax
             treatment.  Wilson  shall be solely and fully  responsible  for the
             payment of, and shall pay,  any and all federal,  state,  and other
             taxes (including any and all withholding taxes) levied with respect

<PAGE>

             to the grant of the Option,  the purchase of the Option Shares, and
             any subsequent  transfer thereof.  In the event the exercise of the
             Option or the disposition of the Option Shares  following  exercise
             of the Option  results in Wi1son's  realization of income which for
             federal,  state,  local, or other income tax purposes is, in TSET's
             opinion,  subject to  withholding  of tax,  then at the election of
             TSET  and  prior  to  the   delivery  to  Wilson  of   certificates
             representing  the Option  Shares  acquired  by him  pursuant  to an
             Exercise  Notice,  (a) Wilson  shall pay to TSET an amount equal to
             such  withholding tax or (b) TSET may withhold such amount from any
             compensation or other payments owed by TSET to Wilson.

         6.  NONQUALIFIED STATUS. The Option is not intended to be an "incentive
             stock  option" as defined in the Internal  Revenue Code of 1986, as
             amended,  and shall not be treated as such  whether or not,  by the
             terms  hereof,   it  meets  the   requirements  of  any  applicable
             provisions thereof.

         7.  NOTICES.   All  notices  or  other  communications  given  or  made
             hereunder shall be in writing and may be delivered  personally,  by
             express,  registered, or certified mail (return receipt requested),
             by special courier, or by facsimile transmission (to be followed by
             delivery  of a  written  original  notice  in the most  expeditious
             manner  possible,  as  aforesaid),  all postage,  fees, and charges
             prepaid,  to TSET and Wilson,  as the case may be, to the following
             addresses  (which may be changed by the  parties  from time to time
             upon written notice given as aforesaid):

               To TSET:       333 South State Street, PMB 111
                              Lake Oswego, OR 97034

                              Attn: Richard A. Papworth
                              Chief Financial Officer

                              Tel.: 503.968.1547
                              Fax: 503.968.0867

               To Wilson:     333 South State Street, PMB 111
                              Lake Oswego, OR 97035

                              Tel: 503.380.5558
                              Fax: 503.968.2337

               Notices hereunder shall be deemed given when delivered in person,
               upon  confirmation  of  successful   transmission  when  sent  by
               facsimile,  or 5 days after being mailed by express,  registered,
               or certified mail (return  receipt  requested),  postage and fees
               prepaid.

         8.  INTEGRATION  AMENDMENT,  AND WAIVER.  When executed and  delivered,
             this Agreement shall  constitute the entire  agreement  between the
             parties  with  respect  to the  subject  matter  hereof  and  shall
             supersede  any and all prior  agreements  and  understandings  with
             respect thereto. No other agreement, whether oral or written, shall
             be used to modify or contradict  the  provisions  hereof unless the
             same is in writing,  signed by the  parties,  and states that it is

<PAGE>

             intended to amend the  provisions of this  Agreement.  No waiver by
             either  party of any  breach of this  Agreement  in any  particular
             instance  shall  constitute a waiver of any other breach  hereof in
             any other  circumstance  or any  relinquishment  for the  future of
             their  respective  rights  to  strictly  enforce  all of the  other
             provisions  hereof or seek all  remedies  which may be available at
             law or in equity.

         9.  COUNTERPARTS;  BINDING  EFFECT.  This  Agreement may be executed in
             multiple  counterparts (and by facsimile signature,  to be followed
             by manual  signature),  each of which shall be deemed an  original,
             and all of which shall be deemed to constitute a single  agreement.
             This  Agreement  shall be binding  upon and inure to the benefit of
             the parties' respective permitted heirs, successors, and assigns.

         10. ASSIGNMENT.  This  Agreement  is personal  to the  parties  hereto.
             Accordingly,  Wilson  shall not assign or transfer  this  Agreement
             without the prior written consent of TSET,  which consent shall not
             be  unreasonably  withheld,   conditioned,  or  delayed;  provided,
             however,  that Wilson shall be permitted to assign or transfer this
             Agreement to a legal entity owned by Wilson  without such  consent.
             Any  attempted  assignment  of this  Agreement  by  Wilson  without
             receipt of such consent from TSET shall be null and void.

         11. SEVERABILITY.  If  any  provision  (or  portion  thereof)  of  this
             Agreement  is  adjudged  unenforceable  by  a  court  of  competent
             jurisdiction,  the remaining provisions shall nevertheless continue
             in full  force and effect and the  provision  deemed  unenforceable
             shall be remade or interpreted by the parties in a manner that such
             provisions shall be enforceable to preserve,  to the maximum extent
             possible,  the original intention and meaning thereof. If necessary
             to effect such  intent,  TSET and Wilson  shall  negotiate  in good
             faith to amend  this  Agreement  to  replace  such  provision  with
             language  believed in good faith by the parties to be  enforceable,
             which as closely as possible reflects such intent.

         12. NO  THIRD  PARTY  BENEFICIARIES.  This  Agreement  is for the  sole
             benefit of the parties and their permitted  successors,  heirs, and
             assigns.  Nothing  herein,  expressed or implied,  shall give or be
             construed  to give any other  person,  other than the  parties  and
             their permitted  assigns,  any legal or equitable rights hereunder.
             No  finder's  or other fees  shall be payable by either  party with
             respect to the exercise of the Option or the issuance of the Option
             Shares pursuant to this Agreement.

         13. STATE  SECURITIES  QUALIFICATIONS.  The sale of the  Option  Shares
             pursuant to any exercise of the Option has not been  qualified with
             the  securities  regulatory  authorities  in  any  state  or  other
             jurisdiction  and the  issuance of the Option  Shares prior to such
             qualification  may be unlawful unless such  transactions are exempt
             from such  qualification  requirements.  The rights of the  parties
             hereto are  expressly  conditioned  upon such  qualification  being
             obtained, unless any such transaction is so exempt.

<PAGE>

         14. GOVERNING LAW. This Agreement shall be governed by and construed in
             accordance  with the laws of the State of Oregon,  exclusive of its
             conflicts of laws principles.

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

TSET, Inc.

By:     /s/ Richard A. Papworth
        ------------------------------
        Richard A. Papworth
        Chief Financial Officer

/s/ Jeffrey D. Wilson
-----------------------------
Jeffrey D. Wilson

<PAGE>Exhibit 10.24

                             STOCK OPTION AGREEMENT
                             ----------------------

      THIS STOCK OPTION  AGREEMENT  is entered into as of April 9, 2001,  by and
between  TSET,  Inc.,  a Nevada  corporation  ("TSET"),  and  Jeffrey D.  Wilson
("Wilson").

                                   WITNESSETH:
                                   ----------

      WHEREAS, TSET desires to grant to Wilson an option to acquire up to 50,000
restricted  shares of TSET's  common  stock,  par value  $0.001  per share  (the
"Option Shares"),  in consideration of valuable  contributions made by Wilson to
TSET and its wholly-owned subsidiaries; and

      WHEREAS, Wilson desires to accept such option.

      NOW,  THEREFORE,  for and in  consideration  of the  premises  and  mutual
promises,  covenants,  and  agreements  set forth  herein and for other good and
valuable  consideration,  the delivery,  receipt,  and  sufficiency  of which is
hereby acknowledged, the parties hereto agree as follows:

      1.   GRANT OF  OPTION.  TSET  hereby  grants  to  Wilson  an  option  (the
           "Option") to acquire the Option Shares at an exercise price of $0.885
           per share (the "Exercise  Price").  The Option shall  immediately and
           fully vest in Wilson's  favor for all  purposes  upon  execution  and
           delivery of this Agreement by the parties.  The Option is personal to
           Wilson and may be exercised  only by Wilson during his lifetime.  The
           Option  shall  continue  in full  force and  effect for a period of 5
           years from the date  hereof  (the  "Term"),  at which time the Option
           shall expire and terminate unless previously exercised by Wilson. The
           Option shall not be subject to forfeiture or termination,  except for
           Wilson's failure to exercise the Option during the Term.

      2.   EXERCISE OF OPTION.  The Option may be exercised by Wilson,  in whole
           or in part,  at any time  during  the Term  upon  receipt  by TSET of
           written  notice from Wilson (the  "Exercise  Notice").  The  Exercise
           Notice shall specify the number of Option  Shares  Wilson  desires to
           acquire  pursuant  thereto and provide any  necessary or  appropriate
           instructions   to  TSET  and  its  transfer   agent   regarding   the
           denomination of certificates  representing  the Option Shares and the
           name in which the Option Shares should be registered. The exercise of
           the Option  shall be on a  "cashless"  basis and Wilson  shall not be
           required to remit to TSET any payment therefor.

      3.   RESERVATION  OF THE  OPTION  SHARES.  To  ensure  fulfillment  of its
           obligations  hereunder  should  Wilson  elect to exercise the Option,
           TSET shall  reserve from its  authorized  but  unissued  capital that
           number of shares of its common stock equal to the Option Shares.

<PAGE>

      4.   RESTRICTIONS ON TRANSFER.  Wilson acknowledges that the Option Shares
           are  subject to certain  restrictions  upon  transfer,  and cannot be
           sold, assigned,  transferred, or conveyed (in any case, a "transfer")
           except in compliance with such restrictions and applicable provisions
           of federal and state securities laws.  Certificates  representing the
           Option Shares shall bear appropriate restrictive legends and notices.
           In the event Wilson  desires to transfer  any Option  Shares prior to
           the  expiration  of such  restrictions,  TSET  shall be  entitled  to
           receive from Wilson written undertakings, certifications, or opinions
           of legal counsel evidencing compliance with such restrictions.

      5.   TAX MATTERS.  Wilson  acknowledges that treatment of the Option,  the
           Option Shares,  and events or transactions with respect thereto,  for
           federal and state income and other tax  purposes,  is dependent  upon
           various   factors  and  events  which  are  not  determined  by  this
           Agreement.  TSET makes no  representations to Wilson with respect to,
           and  hereby  disclaims  any and  all  responsibility  as to such  tax
           treatment.  Wilson  shall be  solely  and fully  responsible  for the
           payment  of, and shall pay,  any and all  federal,  state,  and other
           taxes  (including any and all withholding  taxes) levied with respect
           to the grant of the Option,  the purchase of the Option  Shares,  and
           any  subsequent  transfer  thereof.  In the event the exercise of the
           Option or the disposition of the Option Shares following  exercise of
           the  Option  results  in  Wilson's  realization  of income  which for
           federal,  state,  local,  or other  income tax purposes is, in TSET's
           opinion,  subject to withholding of tax, then at the election of TSET
           and prior to the delivery to Wilson of certificates  representing the
           Option  Shares  acquired by him pursuant to an Exercise  Notice,  (a)
           Wilson shall pay to TSET an amount equal to such  withholding  tax or
           (b) TSET may  withhold  such  amount from any  compensation  or other
           payments owed by TSET to Wilson.

      6.   NONQUALIFIED   STATUS.   The  Option   is   not  intended  to  be  an
           "incentive  stock option" as defined in the Internal  Revenue Code of
           1986, as amended, and shall not be treated as such whether or not, by
           the  terms  hereof,  it  meets  the  requirements  of any  applicable
           provisions thereof.

      7.   NOTICES.  All notices or other communications given or made hereunder
           shall be in writing  and may be  delivered  personally,  by  express,
           registered,  or certified mail (return receipt requested), by special
           courier, or by facsimile  transmission (to be followed by delivery of
           a written original notice in the most expeditious manner possible, as
           aforesaid),  all  postage,  fees,  and charges  prepaid,  to TSET and
           Wilson, as the case may be, to the following  addresses (which may be
           changed by the parties from time to time upon written notice given as
           aforesaid):

           To TSET:            333 South State Street, PMB 111
                               Lake Oswego, OR 97034

                               Attn: Richard A. Papworth
                                     Chief Financial Officer

<PAGE>

                                Tel: 503.968.1547
                                Fax: 503.968.0867

             To Wilson:         333 South State Street, PMB 111
                                Lake Oswego, OR 97035

                                Tel: 503.380.5558
                                Fax: 503.968.2337

           Notices  hereunder  shall be deemed given when  delivered in person,
           upon confirmation of successful transmission when sent by facsimile,
           or 5 days after being  mailed by express,  registered,  or certified
           mail (return receipt requested), postage and fees prepaid.

      8.   INTEGRATION, AMENDMENT, AND WAIVER. When executed and delivered, this
           Agreement shall constitute the entire  agreement  between the parties
           with respect to the subject matter hereof and shall supersede any and
           all prior  agreements and  understandings  with respect  thereto.  No
           other agreement,  whether oral or written, shall be used to modify or
           contradict  the  provisions  hereof  unless  the same is in  writing,
           signed by the  parties,  and states  that it is intended to amend the
           provisions of this Agreement. No waiver by either party of any breach
           of this  Agreement  in any  particular  instance  shall  constitute a
           waiver of any other breach  hereof in any other  circumstance  or any
           relinquishment  for the future of their respective rights to strictly
           enforce all of the other provisions hereof or seek all remedies which
           may be available at law or in equity.

      9.   COUNTERPARTS;  BINDING  EFFECT.  This  Agreement  may be  executed in
           multiple counterparts (and by facsimile signature,  to be followed by
           manual signature), each of which shall be deemed an original, and all
           of which  shall be  deemed to  constitute  a single  agreement.  This
           Agreement  shall be  binding  upon and  inure to the  benefit  of the
           parties' respective permitted heirs, successors, and assigns.

      10.  ASSIGNMENT.  This  Agreement  is  personal  to  the  parties  hereto.
           Accordingly,  Wilson  shall not  assign or  transfer  this  Agreement
           without the prior written consent of TSET, which consent shall not be
           unreasonably withheld,  conditioned,  or delayed; provided,  however,
           that Wilson shall be permitted to assign or transfer  this  Agreement
           to a legal entity owned by Wilson without such consent. Any attempted
           assignment  of this  Agreement  by  Wilson  without  receipt  of such
           consent from TSET shall be null and void.

      11.  SEVERABILITY. If any provision (or portion thereof) of this Agreement
           is adjudged unenforceable by a court of competent  jurisdiction,  the
           remaining  provisions shall  nevertheless  continue in full force and
           effect  and the  provision  deemed  unenforceable  shall be remade or
           interpreted by the parties in a manner that such provisions  shall be
           enforceable to preserve, to the maximum extent possible, the original
           intention  and meaning  thereof.  If necessary to effect such intent,
           TSET and Wilson shall negotiate in good faith to amend this Agreement

<PAGE>

           to replace such provision with language believed in good faith by the
           parties to be enforceable, which as closely as possible reflects such
           intent.

      12.  NO THIRD PARTY BENEFICIARIES.  This Agreement is for the sole benefit
           of the parties and their permitted  successors,  heirs,  and assigns.
           Nothing herein,  expressed or implied,  shall give or be construed to
           give any other  person,  other than the parties  and their  permitted
           assigns,  any legal or  equitable  rights  hereunder.  No finder's or
           other  fees shall be  payable  by either  party  with  respect to the
           exercise of the Option or the issuance of the Option Shares  pursuant
           to this Agreement.

      13.  STATE  SECURITIES  QUALIFICATIONS.  The  sale  of the  Option  Shares
           pursuant to any  exercise of the Option has not been  qualified  with
           the  securities   regulatory   authorities  in  any  state  or  other
           jurisdiction  and the  issuance  of the Option  Shares  prior to such
           qualification  may be unlawful  unless such  transactions  are exempt
           from such  qualification  requirements.  The  rights  of the  parties
           hereto  are  expressly  conditioned  upon  such  qualification  being
           obtained, unless any such transaction is so exempt.

      14.  GOVERNING LAW. This  Agreement  shall be governed by and construed in
           accordance  with the laws of the State of  Oregon,  exclusive  of its
           conflicts of laws principles.

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

TSET, Inc.

 By:/s/ RICHARD A. PAPWORTH
    --------------------------
    Richard A. Papworth
    Chief Financial Officer

/s/ JEFFREY D. WILSON
------------------------------
Jeffrey D. Wilson

<PAGE>

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