SILVERTHORNE PRODUCTION CO
SC 13D, 2000-05-02
CRUDE PETROLEUM & NATURAL GAS
Previous: DYCO OIL & GAS PROGRAM 1984-2, 10-Q, 2000-05-02
Next: CENTURY PARK PICTURES CORP, 10-K/A, 2000-05-02



                                                                 OMB APPROVAL
                                                        OMB Number: 3235-0145
                                                    Expires: October 31, 2002
                                                     Estimated average burden
                                                    hours per form .....14.90
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934
                                (Amendment No.  )*

                        Silverthorne Production Company
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                    Common Stock $0.001 par value per share
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                     82845R
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

               Jimmy L. Boswell, 3220 S. Higuera Street, Suite 304
                        San Luis Obispo, California 93401
                                 (805) 786-2640
- --------------------------------------------------------------------------------
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                 August 20, 1999
- --------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-l(b)(3) or (4), check the following box [ ].

NOTE:  Schedules  filed in paper format shall include a signed original and five
copies of the  schedule,  including  all exhibits.  See  ss.240.13d-7  for other
parties to whom copies are to be sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).



                                       1
<PAGE>
                                  SCHEDULE 13D

  CUSIP No. 82845R
  1.  NAME OF REPORTING PERSON
      S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (entities only)

      Inter-American Telecommunications Holding Corporation
  -------------------------------------------------------------------------
  2.  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                     (a) [  ]
                                                                     (b) [  ]
  -------------------------------------------------------------------------
  3.  SEC USE ONLY

  -------------------------------------------------------------------------
  4.  SOURCE OF FUNDS (See Instructions)
      00
  -------------------------------------------------------------------------
  5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) or 2(e)                                            [   ]
  -------------------------------------------------------------------------
  6. CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware
  -------------------------------------------------------------------------
  NUMBER OF           7.  SOLE VOTING POWER
  SHARES
  BENEFICIALLY            24,195,384 Shares
  OWNED BY              ----------------------------------------------------
  EACH                8.  SHARED VOTING POWER
  REPORTING               -0-
  PERSON                ----------------------------------------------------
  WITH
                      9.  SOLE DISPOSITIVE POWER
                          24,195,384 Shares
                      ----------------------------------------------------

                      10. SHARED DISPOSITIVE POWER
                          -0-
  --------------------------------------------------------------------------
  11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       24,195,384 Shares
  -------------------------------------------------------------------------
  12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
       SHARES (See Instructions)                                      [  ]
  -------------------------------------------------------------------------
  13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
       51.6%
  --------------------------------------------------------------------------
  14.  TYPE OF REPORTING PERSON (See Instructions)
       CO
  -------------------------------------------------------------------------

                                       2

<PAGE>


ITEM 1.   SECURITY AND ISSUER.

     The title of the class of equity securities to which this statement relates
is shares of Common Stock,  $.001 par value ("Common  Stock"),  of  Silverthorne
Production Company (the "Issuer").

     The  name and address of the principal executive offices of the Issuer are:

     Silverthorne Production Company
     7001 Seaview Avenue, NW, Suite 210
     Seattle, Washington 98117

ITEM 2.   IDENTITY AND BACKGROUND

I-A. (a)      Inter-American Telecommunications Holding Corporation ("ITHC").

     (b)  The principal office address of ITHC is 2608 Second Avenue, Suite 108,
          Seattle, Washington 98120.

     (c)  The principal  business of ITHC was providing,  carrying and reselling
          domestic  and  international  long  distance  telephone  services  and
          products.

     (d)  During the last five years,  ITHC has not been convicted in a criminal
          proceeding (excluding traffic violations or similar misdemeanors).

     (e)  During  the  last  five  years,  ITHC  has not been a party to a civil
          proceeding  of  a  judicial  or   administrative   body  of  competent
          jurisdiction required to be reported hereunder.

     (f)  ITHC is a  United  States  corporation  organized  under  the  laws of
          Delaware.

I-B. (a)  Jimmy Lee Boswell is President and Chief Operating Officer of ITHC and
          is the President and Chief Operating Officer of the Issuer.

     (b)  The  business  address  of Jimmy Lee  Boswell  is 3220  South  Higuera
          Street, Suite 304, San Luis Obispo, California 93401.

     (c)  The  principal  occupation  of Jimmy Lee  Boswell is as  President  of
          Aquila International Telecommunications, Inc.

     (d)  During the last five years,  Jimmy Lee Boswell has not been  convicted
          in a criminal  proceeding  (excluding  traffic  violations  or similar
          misdemeanors).

     (e)  During the last five years,  Jimmy Lee Boswell has not been a party to
          a civil proceeding of a judicial or  administrative  body of competent
          jurisdiction required to be reported hereunder.

     (f)  Jimmy Lee Boswell is a U.S. citizen.



                                       3
<PAGE>


I-C. (a)  David G. Lucas is a director and the Chief  Financial  Officer of ITHC
          and is the Chief Financial Officer of the Issuer.

     (b)  The business  address of David G. Lucas is 3220 South Higuera  Street,
          Suite 304, San Luis Obispo, California 93401.

     (c)  The  principal  occupation  of David G. Lucas is as Vice  President of
          Finance of Aquila International Telecommunications, Inc.

     (d)  During the last five years, David G. Lucas has not been convicted in a
          criminal   proceeding   (excluding   traffic   violations  or  similar
          misdemeanors).

     (e)  During the last five  years,  David G. Lucas has not been a party to a
          civil  proceeding  of a judicial or  administrative  body of competent
          jurisdiction required to be reported hereunder.

     (f)  David G. Lucas is a U.S. citizen.

I-D  (a)  David L.  Jackson is a  director  and the  Secretary  of ITHC and is a
          director and the Vice President and Secretary of the Issuer.

     (b)  The business address of David L. Jackson is 3707 Calle Cortejo, Rancho
          Santa Fe, California 92067.

     (c)  The principal  occupation of David L. Jackson is as the Vice President
          and Secretary of the Issuer and as an arbitrator in dispute resolution
          of commercial and labor law.

     (d)  During the last five years, David L. Jackson has not been convicted in
          a  criminal  proceeding   (excluding  traffic  violations  or  similar
          misdemeanors).

     (e)  During the last five years, David L. Jackson has not been a party to a
          civil  proceeding  of a judicial or  administrative  body of competent
          jurisdiction required to be reported hereunder.

     (f)  David L. Jackson is a U.S. citizen.

I-E  (a)  Kevin Anderson is a director of ITHC.

     (b)  The business  address of Kevin Anderson is 2608 Second  Avenue,  Suite
          108, Seattle, Washington 98120.

     (c)  The principal occupation of Kevin Anderson is as a consultant.

     (d)  During the last five years, Kevin Anderson has not been convicted in a
          criminal   proceeding   (excluding   traffic   violations  or  similar
          misdemeanors).

     (e)  During the last five years,  Kevin  Anderson has not been a party to a
          civil  proceeding  of a judicial or  administrative  body of competent
          jurisdiction required to be reported hereunder.

     (f)  Kevin Anderson is a U.S. citizen.




                                       4
<PAGE>


I-F  (a)  Darrell H. Hughes is the Chief Executive  Officer of ITHC and Chairman
          of the Board and the Chief Executive Officer of the Issuer.

     (b)  The business address of Darrell H. Hughes is 7001 Seaview Avenue,  NW,
          Suite 210, Seattle, Washington 98117.

     (c)  The principal  occupation  of Darrell H. Hughes is as Chief  Executive
          Officer of Silverthorne Production Company.

     (d)  During the last five years,  Darrell H. Hughes has not been  convicted
          in a criminal  proceeding  (excluding  traffic  violations  or similar
          misdemeanors).

     (e)  During the last five years,  Darrell H. Hughes has not been a party to
          a civil proceeding of a judicial or  administrative  body of competent
          jurisdiction required to be reported hereunder.

     (f)  Darrell H. Hughes is a U.S. citizen.

II-A.(a)  Cognigen  Corporation  ("Cognigen")  is a controlling  corporation  of
          ITHC.

     (b)  The principal office address of Cognigen is 8711 15th Ave NW, Seattle,
          Washington 98117.

     (c)  The   principal   business  of  Cognigen  is  internet   marketing  of
          long-distance telecommunications services.

     (d)  During  the last five  years,  Cognigen  has not been  convicted  in a
          criminal   proceeding   (excluding   traffic   violations  or  similar
          misdemeanors).

     (e)  During the last five years,  Cognigen  has not been a party to a civil
          proceeding  of  a  judicial  or   administrative   body  of  competent
          jurisdiction required to be reported hereunder.

     (f)  Cognigen is a United States  corporation  organized  under the laws of
          Nevada.

II-B (a)  Kevin Anderson is a Director,  President,  and a controlling person of
          Cognigen.

     (b)  (b)-(f) See Item I-E above.

II-C (a)  Laurel  Anderson  is  a  Director,  Vice-President  and  Treasurer  of
          Cognigen. Ms. Anderson is the spouse of Kevin Anderson.

     (b)  The principal office address of Laurel Anderson is 2608 Second Avenue,
          Suite 108, Seattle, Washington 98121.

     (c)  The principal occupation of Laurel Anderson is as a telecommunications
          and business agent for Cognigen.

     (d)  During the last five years,  Laurel Anderson has not been convicted in
          a  criminal  proceeding   (excluding  traffic  violations  or  similar
          misdemeanors).

     (e)  During the last five years,  Laurel Anderson has not been a party to a
          civil  proceeding  of a judicial or  administrative  body of competent
          jurisdiction required to be reported hereunder.

     (f)  Laurel Anderson is a U.S. citizen.




                                       5
<PAGE>

II-D (a)  Peter Tilyou is Secretary of Cognigen.

     (b)  The principal  office  address of Peter Tilyou is 2608 Second  Avenue,
          Suite 108, Seattle, Washington 98121.

     (c)  The principal occupation of Peter Tilyou is as a consultant.

     (d)  During the last five years,  Peter Tilyou has not been  convicted in a
          criminal   proceeding   (excluding   traffic   violations  or  similar
          misdemeanors).

     (e)  During  the last five  years,  Peter  Tilyou has not been a party to a
          civil  proceeding  of a judicial or  administrative  body of competent
          jurisdiction required to be reported hereunder.

     (f)  Peter Tilyou is a U.S. citizen.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

     The Issuer and ITHC  entered into a Stock  Purchase  and Asset  Acquisition
Agreement  dated  August 19,  1999  (attached  hereto as Exhibit 1) in which the
Issuer and ITHC agreed that the Issuer would  acquire all of the assets owned by
ITHC in order to maximize the Issuer's  business  development for the benefit of
the Issuer and its  shareholders.  On August 20, 1999, the Issuer  completed the
first  closing of the  acquisition  of all of the assets of ITHC in exchange for
29,242,953  shares of the  Issuer's  Common  Stock.  On  November  24, 1999 ITHC
transferred  150,000  shares of the  Issuer's  Common  Stock to two  persons  in
partial  payment of a finder's  fee. On December 27,  1999,  the Issuer and ITHC
agreed that the total number of shares of the Issuer's Common Stock that were to
be issued at the first  closing was  11,742,953  shares  rather than  29,242,953
shares  and the total  number of shares to be issued at the second  closing  was
37,298,444  shares. As a result of ITHC's right to receive the 11,742,953 shares
of the Issuer's  Common  Stock,  the transfer of 150,000  shares of the Issuer's
Common Stock and the previous sale of 12,602,431  shares of the Issuer's  Common
Stock to ITHC, ITHC currently owns  24,195,384,  or  approximately  51.6% of the
Issuer's outstanding shares of Common Stock.

ITEM 4.  PURPOSE OF TRANSACTION

     As  described  in Item 3 above,  on August  20,  1999 the  Issuer  and ITHC
completed  the  first  closing  of the  Stock  Purchase  and  Asset  Acquisition
Agreement,  the  purpose of which was to enable the Issuer to acquire all of the
assets of ITHC and, thus, enable the Issuer to commence business operations.  As
a result of the transaction,  ITHC will ultimately own  approximately  84.59% of
the outstanding shares of the Issuer.  ITHC plans to liquidate and to distribute
the Issuer's shares to its shareholders.

     Except as stated below,  ITHC has no plans or proposals  which relate to or
would result in:

     (a) The acquisition by any person of additional securities of the Issuer or
the disposition of securities of the Issuer;

     (b)  An   extraordinary   corporate   transaction,   such   as  a   merger,
reorganization or liquidation, involving the Issuer or any of its subsidiaries;

     (c) A sale or transfer of a material  amount of assets of the Issuer or any
of its subsidiaries;



                                       6
<PAGE>


     (d) Any change in the  present  board of  directors  or  management  of the
Issuer,  including  any  plans or  proposals  to  change  the  number or term of
directors  or to fill any  existing  vacancies  on the  board;  except  that the
current  directors and officers of the Issuer (other than David L. Jackson) were
appointed as a result of the  acquisition  of the assets by ITHC and except that
the Issuer plans to hold an Annual Meeting of  Shareholders at which the current
directors and additional directors will be nominated for election;

     (e) Any material change in the present capitalization or dividend policy of
the Issuer;

     (f) Any  other  material  change  in the  Issuer's  business  or  corporate
structure;

     (g) Changes in the Issuer's  charter,  bylaws or instruments  corresponding
thereto or other  actions  which may impede  the  acquisition  of control of the
Issuer by any person;

     (h)  Causing a class of  securities  of the  Issuer to be  delisted  from a
national  securities  exchange or to cease to be  authorized  to be quoted in an
inter-dealer quotation system of a registered national securities association;

     (i) A class of  equity  securities  of the  Issuer  becoming  eligible  for
termination of registration pursuant to section 12(g)(4) of the Act; or

     (j) An action similar to any of those enumerated above.

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER

     (a) Inter-American Telecommunications Holding Corporation ("ITHC")

     As of the date of this  Schedule  13D,  ITHC,  which is a private  company,
beneficially  owned 24,195,384  shares of the Common Stock of the Issuer,  which
constitute  approximately 51.6% of the outstanding shares of the Common Stock of
the Issuer. ITHC has sole voting and dispositive power over the shares.

     (b) Jimmy Lee Boswell

     As of the date of this Schedule 13D, Mr. Boswell owned  approximately  2.6%
of the  outstanding  common stock of ITHC which owned  24,195,384  shares of the
Common Stock of the Issuer.  Mr. Boswell disclaims  beneficial  ownership of the
629,080 shares which represent  approximately  2.6% of the Issuer's shares owned
by ITHC.  In  addition,  Mr.  Boswell  is the  beneficial  owner of a  presently
exercisable  option to  purchase  1,600,000  shares of the  Common  Stock of the
Issuer.

     (c) David G. Lucas

     As of the date of this Schedule 13D, Mr. Lucas owned  approximately 2.6% of
the outstanding common stock of ITHC which owned 24,195,384 shares of the Common
Stock of the Issuer.  Mr. Lucas  disclaims  beneficial  ownership of the 629,080
shares which represent  approximately 2.6% of the Issuer's shares owned by ITHC.
In addition, Mr. Lucas is the beneficial owner of a presently exercisable option
to purchase 1,600,000 shares of the Common Stock of the Issuer.

     (d) David L. Jackson

     As of the date of this Schedule 13D, Mr. Jackson owned  approximately  3.5%
of the  outstanding  common stock of ITHC which owned  24,195,384  shares of the
Common Stock of the Issuer.  Mr. Jackson disclaims  beneficial  ownership of the
849,893 shares which represent  approximately  3.5% of the Issuer's shares owned
by ITHC. In addition,  Mr. Jackson is the  beneficial  owner of 20,000 shares of
the Common Stock of the Issuer and of an option to purchase  1,600,000 shares of
the Common Stock of the Issuer.



                                       7
<PAGE>

     (e) Darrell H. Hughes

     As of the date of this Schedule 13D, Mr. Hughes owned  approximately  10.5%
of the  outstanding  common stock of ITHC which owned  24,195,384  shares of the
Common Stock of the Issuer.  Mr. Hughes  disclaims  beneficial  ownership of the
2,540,516  shares which  represent  approximately  10.5% of the Issuer's  shares
owned by ITHC. In addition,  Mr. Hughes owns 2,000 shares of the Common Stock of
the Issuer and an option to purchase 1,600,000 shares of the Common Stock of the
Issuer.

     (f) Cognigen Corporation

     As of the date of this Schedule 13D, Cognigen owned  approximately 57.9% of
the outstanding  common stock of ITHC which owns 24,195,384 shares of the Common
Stock of the  Issuer.  Cognigen  may be deemed to  beneficially  own  24,195,384
shares of the  Issuer or  approximately  51.6% of the total  outstanding  Common
Stock of the Issuer through Cognigen's ownership of ITHC.

     (1) Kevin Anderson

     Mr.  Anderson is a  controlling  shareholder  of Cognigen and a director of
ITHC. As of the date of this Schedule 13D, Cognigen owned approximately 57.9% of
the outstanding common stock of ITHC. Cognigen may be deemed to beneficially own
24,195,384 shares of the Common Stock of the Issuer through Cognigen's ownership
of ITHC. Mr. Anderson has the sole right to vote and make  investment  decisions
on behalf of Cognigen.  In addition,  Mr. Anderson and members of his family are
the  beneficiaries of the Anderson Family Trust #1 which owned as of the date of
this  Schedule  13D  approximately  98.9%  of the  outstanding  common  stock of
Cognigen and owns an option to purchase 12,000,000 shares of the Common Stock of
the  Issuer.  Therefore,  Mr.  Anderson  may be deemed to  beneficially  own the
24,195,384  shares of the Issuer's  common stock that  Cognigen may be deemed to
beneficially  own.  Mr.  Anderson may be deemed to  beneficially  own a total of
36,195,384 shares of the Common Stock of the Issuer,  or approximately  61.5% of
the total outstanding Common Stock of the Issuer

     (2) Anderson Family Trust #1

     As of the date of this  Schedule  13D, the  Anderson  Family Trust #1 owned
approximately  98.9% of the  outstanding  common  Stock of Cognigen  and owns an
option to purchase  12,000,000  shares of the Common Stock of the Issuer.  As of
the  date of this  Schedule  13D,  Cognigen  owned  approximately  57.9%  of the
outstanding  common stock of ITHC.  Cognigen may be deemed to  beneficially  own
24,195,384 shares of the Common Stock of the Issuer through Cognigen's ownership
of ITHC.  The  Anderson  Family Trust #1 may be deemed to  beneficially  own the
24,195,384  shares of the Common  Stock of the Issuer  held by ITHC  through its
ownership of Cognigen. In addition,  the Anderson Family Trust #1 owns an option
to purchase  12,000,000  shares of the Common Stock of the Issuer.  The Anderson
Family Trust #1 may be deemed to beneficially  own a total of 36,195,384  shares
of  the  Common  Stock  of the  Issuer,  or  approximately  61.5%  of the  total
outstanding Common Stock of the Issuer.

     (3) Laurel Anderson

     Ms. Anderson is the wife of Kevin  Anderson.  Ms.  Anderson's  husband is a
beneficiary of the Anderson  Family Trust #1 which owns  approximately  98.9% of
the  outstanding  common  stock of  Cognigen  and  owns an  option  to  purchase
12,000,000  shares of the Common Stock of the Issuer.  Cognigen may be deemed to
beneficially  own  24,195,384  shares of the Common Stock of the Issuer  through
Cognigen's ownership of ITHC. Ms. Anderson may be deemed to beneficially own the
24,195,384  shares of the Issuer's  common stock that  Cognigen may be deemed to
beneficially  own.  Ms.  Anderson may be deemed to  beneficially  own a total of
36,195,384 shares of the Common Stock of the Issuer,  or approximately  61.5% of
the total outstanding Common Stock of the Issuer.



                                       8
<PAGE>


     (4) Peter Tilyou

     Mr. Tilyou is Secretary of Cognigen.  Mr.  Tilyou is the sole trustee,  but
not a  beneficiary  of, the Anderson  Family  Trust #1 which owns  approximately
98.9% of the outstanding common stock of Cognigen and owns an option to purchase
12,000,000  shares of the Common Stock of the Issuer.  Cognigen may be deemed to
beneficially  own  24,195,384  shares of the Common Stock of the Issuer  through
Cognigen's  ownership of ITHC. Mr. Tilyou may be deemed to beneficially  own the
24,195,384  shares of the Issuer's  common stock that  Cognigen may be deemed to
beneficially  own.  Mr.  Tilyou  may be  deemed to  beneficially  own a total of
36,195,384 shares of the Common Stock of the Issuer,  or approximately  61.5% of
the total outstanding Common Stock of the Issuer.

     (g) Transactions in last sixty (60) days

     On August 20,1999 the Issuer completed the first closing of the acquisition
of all of the  assets of ITHC in  exchange  for  shares  of common  stock of the
Issuer.  On November 24, 1999,  ITHC  transferred  150,000  shares of the Common
Stock of the  Issuer to two  persons in partial  payment of a finder's  fee.  On
December 27, 1999, the Issuer and ITHC agreed that the total number of shares of
the common  stock of the Issuer that were to be issued at the first  closing was
11,742,953  shares rather than  29,242,953  shares and  therefore  ITHC returned
17,500,00 shares that were acquired at the first closing to ITHC.

ITEM 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR
         RELATIONSHIPS WITH RESPECT TO SECURITIES OF ISSUER

     There  are no  contracts,  arrangements,  understandings  or  relationships
(legal or  otherwise)  between  the  entities  named in Item 2 and any person or
entity with respect to any  securities of the Issuer,  including but not limited
to, transfer of or voting of any of the securities of the Issuer, finder's fees,
joint  ventures,  loan or  option  arrangements,  puts or calls,  guarantees  of
profits,  division of profits and loss, or the giving or withholding of proxies,
or a pledge or  contingency  the  occurrence of which would give another  person
voting power or investment  power over the  securities of the Issuer,  except as
follows:  ITHC and the Issuer are parties to that  certain  Stock  Purchase  and
Asset Acquisition Agreement dated August 19, 1999 (attached hereto as Exhibit 1)
and the amendment  thereto dated December 27, 1999  (attached  hereto as Exhibit
2).

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS

Exhibit  1.  Stock  Purchase  and  Asset  Acquisition  Agreement  by  and  among
Silverthorne  Production  Company,  Inter-American   Telecommunications  Holding
Corporation,  and David L. Jackson,  Patricia A. Jackson,  Eric J. Sundsvold and
Karrie R. Jackson, C/F W.R. Jackson dated August 19, 1999.

Exhibit 2.  Amendment to Stock Purchase and Asset  Acquisition  Agreement by and
among Silverthorne Production Company, Inter-American Telecommunications Holding
Corporation,  and David L. Jackson,  Patricia A. Jackson,  Eric J. Sundsvold and
Karrie R. Jackson C/F W.R. Jackson dated December 27, 1999.


                                    SIGNATURE

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.

May 1, 2000
                                            INTER-AMERICAN TELECOMMUNICATIONS
                                            HOLDING CORPORATION


                                            By: /s/ Jimmy Lee Boswell
                                               ---------------------------------
                                                Jimmy Lee Boswell, President and
                                                Chief Operating Officer

                                       9


                                                                       EXHIBIT 1

                               STOCK PURCHASE AND
                           ASSET ACQUISITION AGREEMENT

     This Stock Purchase and Asset  Acquisition  Agreement (the  "Agreement") is
entered  into as of this 19th day of  August  1999,  by and  among  Silverthorne
Production  Company,  a Colorado  corporation  ("Silverthorne"),  Inter-American
Telecommunications  Holding Corporation,  a Delaware corporation  ("ITHC"),  and
David L. Jackson, Patricia A. Jackson, Eric J. Sundsvold, and Karrie R. Jackson,
C/F W.R. Jackson (the "Selling Shareholders").

                                    RECITALS

     WHEREAS,  Silverthorne is a publicly-traded company which has evaluated and
wishes  to  acquire  all of the  assets  owned  by ITHC  in  order  to  maximize
Silverthorne's  business  development  for the benefit of  Silverthorne  and its
shareholders;

     WHEREAS,  ITHC is a  privately  held  marketing  service  provider  of long
distance  communications  services  which desires to enter into a transaction in
which all of its assets would be transferred to Silverthorne and would result in
ITHC  ultimately  holding  approximately  84.59% of the  shares of  Silverthorne
outstanding;

     WHEREAS,  Selling  Shareholders  desire to sell an aggregate of  12,602,431
shares of Silverthorne common stock held by them to ITHC;

     NOW,  THEREFORE,  in consideration  of the mutual  promises,  covenants and
representations set forth below and other good and valuable  consideration,  the
receipt and adequacy of which is hereby  acknowledged,  the parties hereby agree
as follows:

                                    ARTICLE 1

                        TRANSFER OF SECURITIES AND ASSETS

     1.1  Transfer of Shares by Selling  Shareholders.  Subject to the terms and
conditions of this Agreement, Selling Shareholders agree to sell and ITHC agrees
to purchase an aggregate of 12,602,431  shares of  Silverthorne  common stock in
exchange for $190,000 in cash and 300 shares of ITHC's common stock.  The number
of shares being sold by each Selling  Shareholder  is set forth in the signature
block to this  Agreement.  This  sale  shall  occur  at the  First  Closing,  as
described herein.

     1.2  Issuance  of  Shares.  Subject  to the  terms and  conditions  of this
Agreement,  Silverthorne  hereby  agrees to issue to ITHC at the First  Closing,
29,242,953 restricted shares of Common Stock of Silverthorne; provided, however,
if  Silverthorne  has not been able to cancel the 75,000 shares held in the name
of David M.  Anderson by the First  Closing,  the number  issued to ITHC will be
reduced by 75,000,  and Silverthorne  agrees to use its best efforts to have the
75,000  shares  canceled as soon as possible at which time the  remaining  75,00
shares will be issued to ITHC. After the First Closing,  Silverthorne shall call
a meeting of its  shareholders  for the  purposes  described  in this  Agreement
including the consideration of a 1 for 4 reverse split of the outstanding shares
of  Silverthorne  Common Stock.  After the effective  date of such reverse stock
split,  a  Second  Closing  shall  be  held at  which  an  additional  4,949,611
post-split  shares of Common  Stock of  Silverthorne  shall be issued to ITHC as
final payment for the assets purchased hereby. All of the shares of Silverthorne
Common Stock to be issued to ITHC shall be fully  restricted  under Rule 144 but
shall be free and clear of any and all encumbrances.


<PAGE>


     1.3 Transfer of Assets.  In exchange for the shares of Silverthorne  Common
Stock to be  issued  to ITHC,  ITHC  hereby  agrees to  transfer  and  assign to
Silverthorne,  at the First Closing, fully and absolutely,  all right, title and
interest  of all of the assets of ITHC set forth on Schedule A which is attached
hereto and incorporated  herein by reference,  and ITHC agrees that Silverthorne
shall be the sole owner of such assets.

     1.4 Exemption from Registration.  The parties hereto intend that the Common
Stock to be issued by Silverthorne to ITHC shall be exempt from the registration
requirements of the Securities Act of 1933, as amended (the "Act"),  pursuant to
Section 4(2) of the Act and the rules and  regulations  promulgated  thereunder,
and the Common Stock to be transferred by Selling  Shareholders to ITHC shall be
exempt from the  registration  requirements in reliance upon Section 4(1) of the
Act.

                                    ARTICLE 2

                 REPRESENTATIONS AND WARRANTIES OF SILVERTHORNE

     Except as disclosed in Schedule 2 which is attached hereto and incorporated
herein by reference, Silverthorne represents and warrants to ITHC that:

     2.1  Organization.  Silverthorne is a corporation  duly organized,  validly
existing,  and in good  standing  under the laws of Colorado,  has all necessary
corporate  powers to own properties and to carry on business,  and it is not now
conducting  any  business,  except to the extent to which the  effecting  of the
transaction contemplated by this Agreement constitutes doing business.

     2.2 Capitalization.  The authorized capital stock of Silverthorne  consists
of 50,000,000  shares of $.001 par value Common Stock of which 15,832,047 shares
of Common Stock are currently issued and outstanding, and 75,000 of these shares
are in the process of being cancelled.  All of the issued and outstanding shares
of  Common  Stock  are  duly   authorized,   validly  issued,   fully  paid  and
nonassessable.   There  are  no  outstanding  subscriptions,   options,  rights,
warrants,  convertible securities, or other agreements or commitments obligating
Silverthorne to issue or to transfer from treasury any additional  shares of its
capital stock of any class.

     2.3 Subsidiaries.  Silverthorne does not presently have any subsidiaries or
own any interest in any other  enterprise  (whether or not such  enterprise is a
corporation).

     2.4 Directors and Officers. Schedule 2 contains the names and titles of all
directors and officers of Silverthorne as of the date of this Agreement.

     2.5 Financial  Statements.  Silverthorne  has delivered to ITHC its audited
balance  sheet and  statements  of  operations  and cash flows as of and for the
period  ended  June  30,  1999  (the  "Financial  Statements").   The  Financial
Statements  are  complete  and correct in all  material  respects  and have been
prepared in accordance with generally accepted accounting  principles applied on
a consistent basis throughout the periods  indicated.  The Financial  Statements
accurately set out and describe the financial condition and operating results of
Silverthorne as of the dates, and for the periods,  indicated therein. As of the
First Closing, there shall be no more than $10,000 in liabilities.

     2.6  Absence of  Changes.  Since June 30,  1999,  except for changes in the
ordinary  course of business  which have not in the  aggregate  been  materially
adverse,  to  the  best  of  Silverthorne's  knowledge,   Silverthorne  has  not
experienced or suffered any material adverse change in its condition  (financial
or  otherwise),  results of  operations,  properties,  business or  prospects or
waived or surrendered any claim or right of material value.



                                       2
<PAGE>


     2.7  Absence  of  Undisclosed  Liabilities.  To the best of  Silverthorne's
knowledge,  neither  Silverthorne  nor  any of its  assets  are  subject  to any
liabilities or obligations of any nature, whether absolute,  accrued, contingent
or  otherwise  and whether due or to become due,  that are not  reflected in the
Financial Statements.

     2.8 Tax  Returns.  Within  the times and in the manner  prescribed  by law,
Silverthorne has filed all federal,  state and local tax returns required by law
and has paid all taxes, assessments and penalties due and payable.

     2.9 Investigation of Financial Condition. Without in any manner reducing or
otherwise  mitigating the representations  contained herein, ITHC shall have the
opportunity to meet with Silverthorne's accountants and attorneys to discuss the
financial  condition of Silverthorne.  Silverthorne shall make available to ITHC
all books and records of Silverthorne.

     2.10  Trade  Names and  Rights.  Silverthorne  does not use any  trademark,
service mark,  trade name, or copyright in its business,  or own any trademarks,
trademark registrations or applications, trade names, service marks, copyrights,
copyright registrations or applications.

     2.11  Compliance  with  Laws.  To the  best  of  Silverthorne's  knowledge,
Silverthorne has complied with, and is not in violation of, applicable  federal,
state or local statutes,  laws and regulations  (including,  without limitation,
any  applicable  building,  zoning,  or other  law,  ordinance,  or  regulation)
affecting its properties or the operation of its business.

     2.12  Litigation.  Silverthorne  is  not  a  party  to  any  suit,  action,
arbitration,  or legal,  administrative,  or other  proceeding,  or governmental
investigation  pending or, to the best  knowledge  of  Silverthorne,  threatened
against  or  affecting  Silverthorne  or  its  business,  assets,  or  financial
condition.  Silverthorne  is not in default  with  respect  to any order,  writ,
injunction, or decree of any federal, state, local, or foreign court, department
agency, or  instrumentality.  Silverthorne is not engaged in any legal action to
recover moneys due to it.

     2.13 No Pending  Investigation.  Silverthorne  is not aware of any  pending
investigations or legal proceedings by the SEC, any state securities  regulatory
agency, or any other governmental agency regarding  Silverthorne or any officers
or directors of Silverthorne or any shareholders or controlling  persons of such
shareholders.

     2.14  Authority.  Silverthorne  has full  corporate  power and authority to
enter into this Agreement and to consummate  the  transactions  contemplated  by
this  Agreement.  The Board of  Directors of  Silverthorne  has taken all action
required to authorize  the  execution  and  delivery of this  Agreement by or on
behalf of Silverthorne, the performance of the obligations of Silverthorne under
this  Agreement  and  the  consummation  by  Silverthorne  of  the  transactions
contemplated under this Agreement. No other corporate proceedings on the part of
Silverthorne  are  necessary to  authorize  the  execution  and delivery of this
Agreement by  Silverthorne  in the  performance  of its  obligations  under this
Agreement.  This Agreement is, and when executed and delivered by  Silverthorne,
will be a valid and  binding  agreement  of  Silverthorne,  enforceable  against
Silverthorne in accordance with its terms,  except as such enforceability may be
limited by general principles of equity, bankruptcy,  insolvency, moratorium and
similar laws relating to creditors rights generally.

     2.15 Ability to Carry Out  Obligations.  Neither the execution and delivery
of this Agreement, the performance by Silverthorne of its obligations under this
Agreement,  nor the  consummation of the  transactions  contemplated  under this
Agreement  will,  to the  best of  Silverthorne's  knowledge:  (a)  violate  any
provision of  Silverthorne's  articles of incorporation  or bylaws;  (b) with or
without the giving of notice or the passage of time, or both,  violate, or be in
conflict with, or constitute a default under, or cause or permit the termination



                                       3
<PAGE>


or the  acceleration  of the  maturity  of,  any debt,  contract,  agreement  or
obligation of  Silverthorne,  or require the payment of any  prepayment or other
penalties;  (c) require notice to, or the consent of, any party to any agreement
or commitment,  lease or license,  to which Silverthorne is bound; (d) result in
the creation or imposition of any security  interest,  lien or other encumbrance
upon any property or assets of  Silverthorne;  or (e) violate any statute or law
or any judgment,  decree, order, regulation or rule of any court or governmental
authority to which Silverthorne is bound or subject.

     2.16 Validity of Silverthorne  Shares.  The shares of  Silverthorne  Common
Stock to be delivered pursuant to this Agreement, when issued in accordance with
the provisions of this Agreement, will be duly authorized, validly issued, fully
paid and nonassessable.

     2.17 Full Disclosure.  None of the  representations  and warranties made by
Silverthorne  herein, or in any exhibit,  certificate or memorandum furnished or
to be furnished by Silverthorne,  or on its behalf, contains or will contain any
untrue  statement of material fact, or omit any material fact necessary in order
to make the statements made, in light of the circumstances under which they were
made, not misleading.

     2.18 Assets. Silverthorne does not have any assets.

     2.19  Material  Contracts  and  Obligations.  Silverthorne  has no material
contracts to which it is a party or by which it is bound.

     2.20 Consents and Approvals.  No consent,  approval or authorization of, or
declaration,  filing  or  registration  with,  any  governmental  or  regulatory
authority is required to be made or obtained by Silverthorne in connection with:
(a) the execution and delivery by  Silverthorne  of its  obligations  under this
Agreement;  (b) the performance by  Silverthorne  of its obligations  under this
Agreement;   or  (c)  the  consummation  by  Silverthorne  of  the  transactions
contemplated by this Agreement.

     2.21 Real Property. Silverthorne does not own, use or claim any interest in
any real property,  including without  limitation any license,  leasehold or any
similar interest in real property.

     2.22 Articles of Incorporation and Bylaws. The Articles of Incorporation of
Silverthorne and all amendments  thereto to date,  certified by the Secretary of
State of the State of Colorado,  and the by-laws of Silverthorne,  as amended to
date, certified by Silverthorne's Secretary or Assistant Secretary, (1) shall be
delivered to ITHC at the First Closing,  (2) are true,  complete and correct and
(3) have not been  further  amended  subsequent  to the date of delivery of such
documents.  The minute book of Silverthorne (or a true and correct copy thereof,
certified by the Secretary or Assistant  Secretary of Silverthorne) (1) shall be
delivered  to legal  counsel  to ITHC at the  First  Closing  and (2)  correctly
reflects all actions taken and resolutions adopted by Silverthorne, the board of
directors and all committees of the board of directors of Silverthorne.

     2.23  Termination of  Pricenet.com  Transaction.  The  transaction  between
Silverthorne  and  Pricenet.com  which  was  executed  on March  11,  1999,  was
terminated on March 30, 1999, and Silverthorne has no liabilities or obligations
with respect thereto.

     2.24 SEC  Filings.  Silverthorne  is  current in its  filings  with the SEC
required  under  the  Securities  Exchange  Act of 1934,  as  amended  (the "SEC
Filings"). The SEC filings, as of their respective filing dates, complied in all
material  respects with all applicable  requirements of the Exchange Act and the
SEC Filings, as of their filing dates, did not contain any untrue statement of a
material fact or omit to state a material fact required to be stated  therein or
necessary in order to make the statements and information  therein,  in light of
the circumstances under which they were made, not misleading.



                                       4
<PAGE>


                                    ARTICLE 3

                     REPRESENTATIONS AND WARRANTIES OF ITHC

     Except  as  disclosed  in  Schedule  3  which  is  incorporated  herein  by
reference, ITHC represents, warrants and covenants to the Silverthorne that:

     3.1  Authority  of ITHC.  ITHC is a  corporation  duly  organized,  validly
existing and in good standing under the laws of the State of Delaware.  ITHC has
full corporate power and authority to enter into this  Agreement,  to consummate
these transactions and to comply with its terms, conditions and provisions. This
Agreement  constitutes,  and each other  agreement and instrument to be executed
and delivered pursuant to the terms of this Agreement  (collectively,  the "ITHC
Transaction  Documents") by ITHC will constitute,  the legal,  valid and binding
obligation  of the ITHC  enforceable  in accordance  with such ITHC  Transaction
Document's terms,  except as such  enforceability  may be limited by bankruptcy,
insolvency,   reorganization,   moratorium  or  other  similar  laws   affecting
creditors'  rights  generally or by general  equitable  principles.  Neither the
execution and delivery of this  Agreement or other ITHC  Transaction  Documents,
nor  the  consummation  of the  transactions  contemplated  by it or  them  will
conflict  with or result in any  violation of or  constitute a default under any
term of the Articles of  Incorporation  or Bylaws of the ITHC or any  agreement,
mortgage,  debt instrument,  indenture or other  instrument,  judgment,  decree,
order, award, law or regulation by which ITHC is bound.

     3.2 Consents.  No consent,  approval,  authorization or other action by, or
filing or registration with, any federal,  state or local governmental authority
or any other person or entity,  is required in connection with the execution and
delivery by ITHC of this Agreement, the consummation by ITHC of the transactions
contemplated hereby or the performance of ITHC's obligations hereunder.

     3.3 Investment Intent.  ITHC is acquiring the shares of Silverthorne Common
Stock pursuant to this Agreement from Silverthorne and the Selling  Shareholders
for  investment  purposes and not with a view to public  distribution,  provided
that  such  shares  may  be  distributed  by  ITHC  to  its  shareholders.  ITHC
understands  that  the  shares  of  Silverthorne  Common  Stock  to be  acquired
constitute "restricted  securities" as that term is defined under Rule 144 under
the Securities Act of 1933, as amended.

     3.4 Title to Assets. ITHC is the owner of its assets with the full right to
sell or dispose of such assets.  Excepting  only the lien of property  taxes not
delinquent and the security interests disclosed in Schedule 3, ITHC has title to
the assets,  free and clear of any interest to secure  payment or performance of
an obligation, or which retains or reserves such an interest for such purpose.

     3.5  Material  Contracts.   There  are  no  contracts   (including  written
employment contracts), permits or agreements of any kind which materially affect
the assets  other than those  which have been  disclosed  in Schedule 3 attached
hereto; and ITHC will not enter into any new contracts or agreements which would
materially affect such asset without the prior written consent of Silverthorne.

     3.6 Tax Returns. Within the times and in the manner prescribed by law, ITHC
has filed all federal,  state and local tax returns required by law and has paid
all taxes, assessments and penalties due and payable.

     3.7  Compliance  with  Laws.  To the  best of  ITHC's  knowledge,  ITHC has
complied with, and is not in violation of,  applicable  federal,  state or local
statutes,  laws and regulations (including,  without limitation,  any applicable
building,  zoning,  or  other  law,  ordinance,  or  regulation)  affecting  its
properties or the operation of its business.



                                       5
<PAGE>


     3.8 Litigation.  ITHC is not a party to any suit, action,  arbitration,  or
legal,  administrative,  or  other  proceeding,  or  governmental  investigation
pending or, to the best knowledge of ITHC,  threatened against or affecting ITHC
or its business,  assets,  or financial  condition.  ITHC is not in default with
respect to any order, writ, injunction,  or decree of any federal, state, local,
or foreign court, department, agency, or instrumentality. ITHC is not engaged in
any legal action to recover monies due to it.

     3.9  No  Pending   Investigation.   ITHC  is  not  aware  of  any   pending
investigations or legal proceedings by the SEC, any state securities  regulatory
agency,  or any other  governmental  agency  regarding  ITHC or any  officers or
directors  of  ITHC  or  any   shareholders  or  controlling   persons  of  such
shareholders.

     3.10  Disclosures.  No representation or warranty by ITHC in this Agreement
or any Schedule or Exhibit, or any statement,  list or certificate  furnished or
to be furnished by the ITHC pursuant to this  Agreement,  or in connection  with
these transactions,  contains or will contain any untrue statement of a material
fact,  or omits or will  omit to state a  material  fact  required  to be stated
herein or  therein  or  necessary  to make the  statements  contained  herein or
therein not misleading.

                                    ARTICLE 4

                        REPRESENTATIONS AND WARRANTIES OF
                              SELLING SHAREHOLDERS

     The Selling  Shareholders hold at least the number of shares set forth next
to their names on the  signature  page hereof,  and the shares to be sold by the
Selling  Shareholders  hereunder  are owned of record  and  beneficially  by the
respective  Selling  Shareholders  and  are  not  subject  to any  claim,  lien,
encumbrance  or pledge.  Each  Selling  Shareholder  has  authority to sell such
shares pursuant to this Agreement.

                                    ARTICLE 5

                                    COVENANTS

     5.1 Investigative  Rights.  From the date of this Agreement until the First
Closing,  each party shall  provide to the other party,  and such other  party's
counsels,  accountants,  auditors,  and other authorized  representatives,  full
access during normal business hours and upon  reasonable  advance written notice
to all of each party's properties,  books, contracts,  commitments,  and records
for the purpose of examining the same.  Each party shall furnish the other party
with all  information  concerning  each  party's  affairs as the other party may
reasonably request. If the transaction contemplated hereby is not completed, all
documents received by each party and/or its attorneys and accountants,  auditors
or other  authorized  representatives  shall be  returned to the other party who
provided same upon request.  The parties  hereto,  their  directors,  employees,
agents and representatives  shall not disclose any of the information  described
above unless such  information is already  disclosed to the public,  without the
prior  written  consent  of the  party to  which  the  confidential  information
pertains.  Each  party  shall  take  such  steps  as are  necessary  to  prevent
disclosure of such information to unauthorized third parties.

     5.2 Conduct of Business. Prior to the First Closing,  Silverthorne and ITHC
shall  each  conduct  its  business  in the normal  course,  and shall not sell,
pledge,  or assign any assets,  without the prior written  approval of the other
party, except in the regular course of business.  Neither  Silverthorne nor ITHC
shall amend its Articles of Incorporation or Bylaws,  declare dividends,  redeem
or sell stock or other securities, incur additional or newly-funded liabilities,
acquire or dispose of fixed  assets,  change  employment  terms,  enter into any
material or long-term contract, guarantee obligations of any third party, settle
or discharge any balance sheet  receivable for less than its stated amount,  pay
more  on any  liability  than  its  stated  amount,  or  enter  into  any  other
transaction  other than in the regular  course of business  except as  otherwise
contemplated  herein.  The parties do contemplate that ITHC may incur additional
debt prior to the date of the First Closing.

                                       6
<PAGE>


     5.3 Meeting of  Silverthorne  Shareholders.  Following  the First  Closing,
Silverthorne  shall,  as soon as  reasonably  possible,  call a  meeting  of the
Shareholders of Silverthorne for the purposes of (a) approving a 1 for 4 reverse
split  of  the  outstanding  Common  Stock  of  Silverthorne;  (b) a  change  of
Silverthorne's  name to a name designated by ITHC; (c) approving an amendment to
the Articles of  Incorporation  of  Silverthorne  to  authorize  the issuance of
preferred  stock in series in a number  designated by ITHC; (d) electing a slate
of Directors designated by ITHC; (e) approving a stock option plan designated by
ITHC;  and (f) approving any other  amendments to the Articles of  Incorporation
reasonably requested by ITHC.

                                    ARTICLE 6

               CONDITIONS PRECEDENT TO SILVERTHORNE'S PERFORMANCE

     6.1 Conditions.  The obligations of Silverthorne hereunder shall be subject
to the satisfaction,  at or before the First Closing,  of all the conditions set
forth in this Article 6.  Silverthorne  may waive any or all of these conditions
in whole or in part without prior notice; provided, however, that no such waiver
of a condition shall  constitute a waiver by Silverthorne of any other condition
of or any of  Silverthorne's  other rights or remedies,  at law or in equity, if
ITHC  shall  be in  default  of any of  their  representations,  warranties,  or
covenants under this Agreement.

     6.2  Accuracy of  Representations.  Except as  otherwise  permitted by this
Agreement,  all  representations  and warranties by ITHC in this Agreement or in
any written statement that shall be delivered to Silverthorne by ITHC under this
Agreement  shall be true and  accurate on and as of the First  Closing as though
made at that time.

     6.3 Approval of Shareholders  of ITHC. The  shareholders of ITHC shall have
approved the transfer of all of the assets of ITHC in the manner  prescribed  by
the Delaware Business Corporation Act.

     6.4 Performance.  ITHC shall have performed,  satisfied,  and complied with
all  covenants,  agreements,  and  conditions  required by this  Agreement to be
performed or complied with by it, on or before the First Closing.

     6.5 Delivery of Assignment.  ITHC shall have delivered an assignment of all
of its assets to Silverthorne.

     6.6 Auditor's Letter. Prior to the First Closing,  ITHC shall have obtained
a letter  from its  auditors  that  states that they will be able to complete an
audit of ITHC for its last two  fiscal  years  within 75 days of the date of the
First Closing.

     6.7 Absence of Litigation.  No action, suit, or proceeding before any court
or  any   governmental   body  or  authority,   pertaining  to  the  transaction
contemplated  by  this  Agreement  or  to  its  consummation,  shall  have  been
instituted or threatened against ITHC on or before the First Closing.

                                   ARTICLE 7

                   CONDITIONS PRECEDENT TO ITHC'S PERFORMANCE

     7.1  Conditions.  ITHC's  obligations  hereunder  shall be  subject  to the
satisfaction,  at or before the Closing, of all the conditions set forth in this
Article  7. ITHC may waive  any or all of these  conditions  in whole or in part
without  prior  notice;  provided,  however,  that no such waiver of a condition
shall  constitute  a waiver by ITHC of any other  condition  of or any of ITHC's
rights or remedies,  at law or in equity, if Silverthorne shall be in default of
any of its representations, warranties, or covenants under this Agreement.



                                       7
<PAGE>


     7.2  Accuracy of  Representations.  Except as  otherwise  permitted by this
Agreement,  all representations and warranties by Silverthorne in this Agreement
or in any written  statement  that shall be  delivered  to ITHC by  Silverthorne
under this Agreement shall be true and accurate on and as of the Closing Date as
though made at that time.

     7.3 Performance. Silverthorne shall have performed, satisfied, and complied
with all covenants,  agreements, and conditions required by this Agreement to be
performed or complied with by them, on or before the Closing Date.

     7.4 Absence of Litigation.  No action,  suit or proceeding before any court
or  any   governmental   body  or  authority,   pertaining  to  the  transaction
contemplated  by  this  Agreement  or  to  its  consummation,  shall  have  been
instituted or threatened against Silverthorne on or before the Closing Date.

     7.5 Directors of Silverthorne.  Effective on the First Closing, Patricia A.
Jackson shall have submitted her resignation as a Director of Silverthorne,  and
one person designated by ITHC shall have been elected as a Director effective on
the Closing of this transaction.

                                    ARTICLE 8

                                     CLOSING

     8.1 First Closing.  The First Closing of this transaction  shall be held at
the offices of Krys Boyle Freedman & Sawyer,  P.C., or such other place as shall
be  mutually  agreed  upon,  on  August  23,  1999,  or as  soon  thereafter  as
practicable. At the First Closing:

          (a)  Selling  Shareholders  shall  deliver to ITHC stock  certificates
     aggregating 12,602,431 shares of Common Stock of Silverthorne together with
     duly executed stock powers with Medallion Guarantees.

          (b)  ITHC  shall  deliver  to  Selling  Shareholders  cashiers  checks
     totaling  $190,000 payable to Selling  Shareholders and stock  certificates
     representing an aggregate of 300 shares of ITHC common stock.

          (c)   Silverthorne   shall   deliver  to  ITHC  a  stock   certificate
     representing  29,242,953  shares of  Silverthorne  restricted  Common Stock
     registered  in the name of ITHC;  or this  number  may be reduced by 75,000
     pursuant to the provisions of Section 1.2 above.

          (d) ITHC shall  deliver to  Silverthorne  an  assignment of all of its
     assets in a form or forms approved by counsel for Silverthorne.

          (e) Silverthorne  shall deliver a signed Consent and/or Minutes of the
     Directors approving this transaction.

          (f)  ITHC  shall  deliver  a  signed  Consent  and/or  Minutes  of the
     Directors and Shareholders of ITHC approving this Agreement and each matter
     to be approved by the Directors and Shareholders of ITHC.

          (g) Silverthorne  shall deliver a certificate of its President,  dated
     the closing date, certifying that all of the representations and warranties
     by Silverthorne  are true and accurate as of the closing date, and that all
     of the  conditions  to be performed or complied  with by it,  including the
     conditions set forth in Sections 7.2 through 7.6 hereof, have been met.



                                       8
<PAGE>


          (h) ITHC  shall  deliver a  certificate  of its  President,  dated the
     closing date,  certifying that all of the representations and warranties by
     ITHC are true and  accurate  as of the  closing  date,  and that all of the
     conditions to be performed or complied with by it, including the conditions
     set forth in Sections 6.2 through 6.7 hereof, have been met.

          (i)  Silverthorne  shall  deliver  to Mike  Underwood  and Andy  Ungar
     certificates aggregating 5,000,000 shares of Silverthorne restricted Common
     Stock as partial payment of finders' fees.

     8.2 Second Closing. The Second Closing of this transaction shall be held at
the offices of Krys Boyle Freedman & Sawyer,  P.C., or such other place as shall
be mutually  agreed upon at such date and time as the parties  shall agree upon,
which date shall be after the  effective  date of a 1 for 4 reverse split of the
outstanding Common Stock of Silverthorne. At the Second Closing:

          (a)   Silverthorne   shall   deliver  to  ITHC  a  stock   certificate
     representing  4,949,611  post-split shares of  Silverthorne's  Common Stock
     registered in the name of ITHC.

          (b) Silverthorne  shall deliver to ITHC signed Minutes of a meeting of
     the  Shareholders  of  Silverthorne  at  which  the  matters  set  forth in
     paragraph 5.3 shall have been approved.

          (c)  Silverthorne  shall  deliver  to Mike  Underwood  and Andy  Ungar
     certificates   representing  a  total  of  550,000   post-split  shares  of
     Silverthorne Common Stock as final payment of finders' fees.

                                    ARTICLE 9

                                  MISCELLANEOUS

     9.1 Captions and Headings.  The Article and paragraph  headings  throughout
this Agreement are for  convenience  and reference  only, and shall in no way be
deemed  to  define,  limit,  or add to the  meaning  of any  provision  of  this
Agreement.

     9.2 No Oral Change.  This  Agreement and any provision  hereof,  may not be
waived,  changed,  modified,  or discharged  orally, but it can be changed by an
agreement in writing signed by the party against whom enforcement of any waiver,
change, modification, or discharge is sought.

     9.3 Non-Waiver. Except as otherwise expressly provided herein, no waiver of
any covenant,  condition, or provision of this Agreement shall be deemed to have
been made unless  expressly in writing and signed by the party against whom such
waiver is charged; and (i) the failure of any party to insist in any one or more
cases upon the performance of any of the provisions, covenants, or conditions of
this Agreement or to exercise any option herein contained shall not be construed
as a waiver or relinquishment for the future of any such provisions,  covenants,
or conditions,  (ii) the acceptance of performance of anything  required by this
Agreement to be performed with knowledge of the breach or failure of a covenant,
condition,  or  provision  hereof shall not be deemed a waiver of such breach or
failure,  and (iii) no waiver by any party of one breach by another  party shall
be construed as a waiver with respect to any other or subsequent breach.

     9.4 Time of Essence.  Time is of the essence of this  Agreement and of each
and every provision hereof.

     9.5 Entire  Agreement.  This  Agreement  contains the entire  Agreement and
understanding  between the parties hereto,  and supersedes all prior  agreements
and understandings.  There are and have in fact been no restrictions,  promises,
warranties  or  undertakings  other than those set forth  herein.  Neither  this
Agreement nor any term hereof may be changed,  waived,  discharged or terminated
except by a subsequent amendment in writing signed by all parties hereto.



                                       9
<PAGE>


     9.6 Choice of Law. This Agreement and its application  shall be governed by
the laws of the State of  Colorado,  except to the extent its  conflict  of laws
provisions  would apply the laws of another  jurisdiction,  and Colorado will be
the proper venue for jurisdictional  purposes for any actions brought to enforce
this Agreement.

     9.7 Notices. All notices, requests, demands, and other communications under
this  Agreement  shall be in writing and shall be deemed to have been duly given
on the date of service if served personally on the party to whom notice is to be
given,  or on the third day after  mailing if mailed to the party to whom notice
is to be given, by first class mail,  registered or certified,  postage prepaid,
and properly addressed as follows:

     Silverthorne and Selling Shareholders:

                  David L. Jackson, President
                  Silverthorne Production Company
                  16053 Via Viajera
                  Rancho Santa Fe, California  92091
                  Telecopy:  (619) 759-9123

     with a copy to:

                  Jon D. Sawyer, Esq.
                  Krys Boyle Freedman Scott & Sawyer, P.C.
                  600 Seventeenth Street, Suite 2700 South Tower
                  Denver, Colorado 80202
                  Telecopy:  (303) 893-2882

     ITHC:

                  Peter Tilyou
                  Inter-American Telecommunications Holding Corporation
                  2608 Second Avenue, Suite 108
                  Seattle, Washington  98121
                  Telecopy:  (___) ___-____

     with a copy to:

                  Thomas S. Smith
                  Smith McCullough, P.C.
                  4643 South Ulster Street, Suite 900
                  Denver, CO  80237
                  Telecopy:  (303) 221-6001

     9.8 Binding  Effect.  This Agreement shall inure to and be binding upon the
heirs, executors,  personal  representatives,  successors and assigns of each of
the parties to this Agreement.

     9.9 Mutual Cooperation.  The parties hereto shall cooperate with each other
to achieve  the  purpose of this  Agreement,  and shall  execute  such other and
further documents and take such other and further actions as may be necessary or
convenient to effect the transaction described herein.

     9.10 Brokers.  Other than as set forth herein, the parties hereto represent
and agree that no broker has brought about the aforementioned transaction.  Each
of the parties hereto shall  indemnify and hold the other  harmless  against any
and all claims, losses, liabilities or expenses which may be asserted against it
as a result of its  dealings,  arrangements  or  agreements  with any  broker or
person, except as described in this paragraph.



                                       10
<PAGE>


     9.11  Announcements.  Silverthorne and ITHC will consult and cooperate with
each other as to the timing and content of any announcements of the transactions
contemplated  hereby  to  the  general  public  or to  employees,  customers  or
suppliers.

     9.12 Expenses.  Silverthorne and ITHC will pay their own legal,  accounting
and any other out-of-pocket expenses reasonably incurred in connection with this
transaction,  whether or not the transaction contemplated hereby is consummated.

     9.13 Exhibits. As of the execution hereof, the parties hereto have provided
each other with the Exhibits  provided  for herein  above,  including  any items
referenced  therein or required to be attached thereto.  Any material changes to
the Exhibits shall be immediately disclosed to the other party.

     9.14  Counterparts.   This  Agreement  may  be  executed  in  one  or  more
counterparts, each of which will be considered an original instrument and all of
which  together will be considered one and the same  agreement,  and will become
effective  when  counterparts,  which  together  contain the  signatures of each
party,  will  have been  delivered  to  Silverthorne  and to ITHC.  Delivery  of
executed signature pages by facsimile transmission will constitute effective and
binding execution and delivery of this Agreement.

     AGREED TO AND ACCEPTED as of the date first above written.

SILVERTHORNE PRODUCTION               INTER-AMERICAN
COMPANY                               TELECOMMUNICATIONS HOLDING CORPORATION


By: /s/ David L. Jackson              By: /s/ Jimmy L. Boswell
    -------------------------------       ------------------------------------
    David L. Jackson, President           Jimmy L. Boswell, President

SELLING SHAREHOLDERS:


/s/ David L. Jackson
- -----------------------------------
David L. Jackson (10,536,720 shares)


/s/ Eric J. Sundsvold
- -----------------------------------
Eric J. Sundsvold (1,715,280 shares)


/s/ Patricia A. Jackson
- -----------------------------------
Patricia A. Jackson (175,231 shares)


/s/ Karrie R. Jackson
- -----------------------------------
Karrie R. Jackson, C/F W.R. Jackson
(175,200 shares)




                                       11


                                                                       EXHIBIT 2

                                    AMENDMENT
                                       TO
                                 STOCK PURCHASE
                                       AND
                           ASSET ACQUISITION AGREEMENT

     This  Amendment to Stock  Purchase  and Asset  Acquisition  Agreement  (the
"Amendment") is entered into as of the 27th day of December,  1999, by and among
Silverthorne  Production  Company,  a  Colorado  corporation   ("Silverthorne"),
Inter-American  Telecommunications  Holding Corporation,  a Delaware corporation
("ITHC"),  and David L.  Jackson,  Patricia A.  Jackson,  Eric J.  Sundsvold and
Karrie R. Jackson, C/F W. R. Jackson (the "Selling Shareholders").

                                    RECITALS

     WHEREAS,  Silverthorne,  ITHC and the Selling  Shareholders  entered into a
Stock Purchase and Acquisition  Agreement (the "Agreement") which stated that at
the First Closing ITHC was to acquire  29,242,953  shares of the common stock of
Silverthorne from Silverthorne in exchange for the assets of ITHC and 12,602,431
shares of the common  stock of  Silverthorne  from the Selling  Shareholders  in
exchange for cash and ITHC stock;

     WHEREAS, the number of shares of common stock of Silverthorne that ITHC was
to acquire from Silverthorne at the First Closing was incorrectly  stated in the
Agreement and should have been 11,742,953 shares rather than 29,242,953 shares;

     NOW, THEREFORE,  in consideration of the mutual promises and other good and
valuable   consideration,   the  receipt   and   adequacy  of  which  is  hereby
acknowledged, the parties hereby agree as follows:

     Amendments  to  Section  1.2 of  Article  1,  Section  5.3 of Article 5 and
Sections 8.1(c), 8.2(a) and 8.2(c) of Article 8 of the Agreement.  Silverthorne,
ITHC and the Selling Shareholders hereby agree that Section 1.2 of Article 1 and
Section  8.1(c) of Article 8 of the  Agreement  are amended to provide  that the
total number of shares to be issued to ITHC at the First  Closing is  11,742,953
shares and that the  additional  17,500,000  shares  issued to ITHC at the First
Closing  immediately  shall be returned by ITHC to Silverthorne for cancellation
and  at  the  Second  Closing  as  specified  in the  Agreement,  an  additional
37,298,444  pre-split shares of  Silverthorne's  Common Stock shall be issued to
ITHC  rather  than  4,949,611  post-split  shares as  provided in Section 1.2 of
Article 1 and Section 8.2(a) of Article 8 of the Agreement. Further, Section 1.2
of Article 1 and Section  5.3 of Article 5 are amended to delete any  references
to a 1for4  reverse  split and  Section  8.2(c) of the  Agreement  is amended to
provide  that Mike  Underwood  and Andy  Ungar  will  receive  an  aggregate  of
2,200,000  pre-split shares at the second closing rather than 550,000 post-split
shares.

     Amendment to Section 1.3 of Article 1 of the Agreement.  Silverthorne, ITHC
and the Selling  Shareholders  hereby agree that Section 1.3 of Article 1 of the
Agreement is amended to make it clear that all of the assets of ITHC (except for
the common stock of Silverthorne  owned by ITHC),  not just the assets set forth
on Schedule A to the Agreement, were transferred and assigned to Silverthorne at
the First  Closing.  Further,  Silverthorne,  ITHC and the Selling  Shareholders
hereby agree that Silverthorne  assumed and agreed to pay all of the liabilities
of ITHC that existed as of the First Closing.




<PAGE>

     Except as provided herein,  all provisions of the Agreement shall remain in
full force and effect.

SILVERTHORNE PRODUCTION                  INTER-AMERICAN
COMPANY                                  TELECOMMUNICATIONS HOLDING CORPORATION


By: /s/ Jimmy L. Boswell                 By: /s/ Jimmy L. Boswell
    -------------------------------          -----------------------------------
    Jimmy L. Boswell,                        Jimmy L. Boswell,
    President and Chief Operating Officer    President


                                         SELLING SHAREHOLDERS:



                                         /s/ David L. Jackson
                                         ---------------------------------------
                                         David L. Jackson



                                         /s/ Eric J. Sundsvold
                                         ---------------------------------------
                                         Eric J. Sundsvold



                                         /s/ Patricia A. Jackson
                                         ---------------------------------------
                                         Patricia A. Jackson



                                         /s/ Karrie R. Jackson
                                         ---------------------------------------
                                         Karrie R. Jackson, C/F W. R. Jackson



                                       2


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission