AMERICAN PHYSICIANS SERVICE GROUP INC
10KSB, 1997-03-28
MANAGEMENT SERVICES
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON D.C. 20549

                                   FORM 10-KSB
            MARK ONE:
            [X]  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF
                 THE SECURITIES EXCHANGE ACT OF 1934 [FEE REQUIRED]
                     FOR THE FISCAL YEAR ENDED DECEMBER 31, 1996

                                       OR
            [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF
                THE SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]
                         FOR THE TRANSITION PERIOD FROM
                                       TO
                    -------------------- --------------------

                         COMMISSION FILE NUMBER 0-11453

                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
             (Exact name of registrant as specified in its charter)

                 TEXAS                                 75-1458323
     (State or other jurisdiction of                (I.R.S. Employer
      incorporation or organization)                identification No.)

               1301 CAPITAL OF TEXAS  HIGHWAY  AUSTIN, TEXAS 78746
          (Address of principal executive offices)       (Zip Code)

                                 (512) 328-0888
              (Registrant's telephone number, including area code)
          SECURITIES REGISTERED PURSUANT TO SECTION 12(b)OF THE ACT:

                            Name of Each Exchange on
            Title of Each Class                       Which Registered
            -------------------                   ------------------------
                   None                                      None

          SECURITIES REGISTERED PURSUANT TO SECTION 12(g)OF THE ACT:
                          Common Stock, $.10 Par Value
                                (Title of Class)
Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by  Section  13 or 15 (d ) of the  Securities  Exchange  Act of 1934
during the preceding 12 months (or for such shorter  period that the  registrant
was  required  to file such  reports),  and (2) has been  subject to such filing
requirements for the past 90 days. YES [X] NO [ ]

Indicate by check mark if disclosure of delinquent  filers  pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best  of  the  registrant's   knowledge,  in  definitive  proxy  or  information
statements  incorporated  by  reference  in Part III of the Form  10-KSB  or any
amendment to this Form 10-KSB _____

State the aggregate market value of the voting stock held by  non-affiliates  of
the registrant. The aggregate market value shall be computed by reference to the
price at which the stock was sold or the  average  bid and asked  prices of such
stock, as of a specified date within 60 days prior to the date of filing.
          Aggregate Market Value at March 20, 1997: $27,669,778

Indicate the number of shares  outstanding of each of the registrant's  class of
common stock, as of the latest practicable date.

                                               NUMBER OF SHARES
                                                OUTSTANDING AT
     TITLE OF EACH CLASS                        MARCH 20, 1997
     --------------------                      ----------------
Common Stock, $.10 par value                      4,024,695
                       DOCUMENTS INCORPORATED BY REFERENCE
Selected portions of the Registrant's definitive proxy material for the 1997
annual meeting of  shareholders  are  incorporated by reference into Part III of
the Form 10-KSB.
============================================================================

<PAGE>

                     AMERICAN PHYSICIANS SERVICE GROUP, INC.

                          ANNUAL REPORT ON FORM 10-KSB

                   FOR THE FISCAL YEAR ENDED DECEMBER 31, 1996

                                     PART I

ITEM 1.       DESCRIPTION OF BUSINESS

General

         American  Physicians  Service Group, Inc. (the "Company"),  through its
subsidiaries, provides financial services that include management of malpractice
insurance  companies and brokerage and investment  services to  individuals  and
institutions.  The Company has an affiliate  which designs and markets  software
packages  to medical  clinics,  physician-hospital  organizations,  and  medical
schools.  The Company also owns space in the office building which serves as its
headquarters. Through its real estate subsidiary it leases space that is surplus
to its needs.

         The Company  owns  3,064,000  shares of common  stock of Prime  Medical
Services,  Inc. ("Prime Medical"),  representing at March 15, 1997 approximately
16% of the  outstanding  shares of common stock of Prime  Medical.  Two of Prime
Medical's eight  directors are members of the Company's board of directors.  The
Company  records its  pro-rata  share of Prime  Medical's  results on the equity
basis.  Prime  Medical is the largest  operator of  lithotripters  in the United
States,  currently  servicing over 400 hospitals in 32 states.  Lithotripsy is a
non-invasive  method of treating  kidney stones  through the use of shock waves.
The common stock of Prime Medical is traded on the NASDAQ  National Market under
the symbol "PMSI." Prime Medical is a Delaware  corporation which is required to
file annual,  quarterly and other reports and documents  with the Securities and
Exchange  Commission,  which reports and documents  contain  financial and other
information  regarding Prime Medical.  The summary  information  regarding Prime
Medical  contained  herein is  qualified  in its  entirety by  reference to such
reports and documents. Such reports and documents may be examined and copies may
be obtained from the offices of the Securities and Exchange  Commission.  Two of
the Company's five directors are members of Prime Medical's board of directors.

         On October 31,  1996,  the Company  invested  $3,300,000  in the common
stock of Exsorbet Industries, Inc. ("Exsorbet") (NASDAQ:EXSO) with a put option.
Exsorbet is a diversified  environmental  and  technical  services  company.  On
November  26,  1996,  the  Company  exercised  its  put in  exchange  for a note
receivable  from Exsorbet.  The note is secured by the shares which were subject
to the put  plus all of the  stock  and  substantially  all of the  assets  of a
wholly-owned  subsidiary of Exsorbet.  According to documents which Exsorbet has
filed  with  the  Securities  and  Exchange  Commission,  Exsorbet  has  limited
liquidity, which would currently not allow payment of the Company's note, and is
considering  various  options  to  secure  such  funding,  including  a  private
placement of debt or equity.

                                        1

<PAGE>




         The Company was  organized  in October 1974 under the laws of the State
of Texas. The Company  maintains its principal  executive office at 1301 Capital
of Texas Highway,  Suite C-300, Austin, Texas 78746, and its telephone number is
(512) 328-0888.  Unless the context otherwise requires, all references herein to
the "Company" shall mean American Physicians Service Group, Inc.
and its subsidiaries (other than Prime Medical).

         The Company had previously published Spanish language buying guides of
U. S. businesses for distribution in Mexico.  This business segment had been
unprofitable for the Company.  In 1995 substantially all of the assets of this
business were sold.  There was no material financial impact on the Company.

Financial Services

         The Company's  financial  services consist of management  services to a
medical  malpractice  insurance  company  by APS  Insurance  Services,  Inc.,  a
wholly-owned subsidiary of the Company ("Insurance Services"), and brokerage and
investment  services to individuals and institutions  performed by APS Financial
Corporation, a wholly-owned subsidiary of the Company ("APS Financial").

         Management of Medical Malpractice Insurance Company

         Insurance Services,  through its wholly-owned subsidiary APS Facilities
Management,  Inc. ("FMI"), provides management services to a medical malpractice
insurance  company,  which is a  reciprocal  insurance  exchange.  A  reciprocal
insurance  exchange  is an  organization  which  sells  insurance  only  to  its
subscribers,  who  pay,  in  addition  to their  annual  insurance  premiums,  a
contribution to the exchange's  surplus.  Such exchanges  generally have no paid
employees but instead enter into a contract with an  "attorney-in-fact,"  a firm
that provides all management and  administrative  services for the exchange.  As
the attorney-in-fact  for American Physicians  Insurance Exchange ("APIE"),  FMI
receives  a  percentage  of the  earned  premiums  of APIE.  The amount of these
premiums  can be adversely  affected by  competition.  Substantial  underwriting
losses,  which might result in a curtailment or cessation of operations by APIE,
would also  adversely  affect  FMI's  revenue.  To limit  possible  underwriting
losses,  APIE  currently  reinsures  its risk in excess of $250,000  per medical
incident.  APIE offers medical  professional  liability insurance for doctors in
Texas and  Arkansas.  FMI's  assets are not subject to any  insurance  claims by
policyholders of APIE.

         FMI  organized  APIE and has  been  its  exclusive  manager  since  its
inception  in 1975.  The  management  agreement  between FMI and APIE  basically
provides for full  management  by FMI of the affairs of APIE under the direction
of APIE's doctor Board of Directors. Subject to the direction of this Board, FMI
sells and  issues  policies,  investigates,  settles  and  defends  claims,  and
otherwise manages APIE's affairs.  In consideration for performing its services,
FMI receives a percentage fee based on APIE's earned premiums (before payment of
reinsurance  premiums).  FMI pays all salaries and personnel  related  expenses,
rent and office operations costs, data processing costs and many

                                        2

<PAGE>



other  operating  expenses of APIE.  APIE is responsible  for the payment of all
claims,  claims expenses,  peer review  expenses,  directors' fees and expenses,
legal,  actuarial and auditing  expenses,  its taxes and certain other  specific
expenses. Under the agreement, FMI's authority to act as manager of the exchange
is automatically  renewed each year unless a majority of the subscribers to APIE
terminates this agreement by reason of an adjudication that FMI has been grossly
negligent,  has acted in bad faith or with  fraudulent  intent or has  committed
willful misfeasance in its management activities.

         During   1996,   1995  and  1994   approximately   45%,  26%  and  29%,
respectively,   of  the  Company's  revenues  from  continuing   operations  and
substantially all of FMI's revenues were received pursuant to the agreement with
APIE  discussed  above.  Termination  of the  agreement  with APIE  would have a
material adverse effect on the Company.

         APIE is a reciprocal  insurance  exchange  authorized to do business in
the  states  of  Texas  and  Arkansas.   APIE  specializes  in  writing  medical
professional  liability  insurance  for health  care  providers.  The  insurance
written in Texas is primarily through purchasing groups,  which insurance is not
subject  to  certain  rate and  policy  form  regulations  issued  by the  Texas
Department of Insurance. Applicants for insurance coverage are reviewed based on
the nature of their  practices,  prior  claims  records  and other  underwriting
criteria.  APIE is the third largest medical  professional  liability  insurance
company  in the  State  of  Texas  and is one of the  largest  in the  State  of
Arkansas. APIE is the only insurance company based in Texas that is wholly-owned
by its subscriber physicians.

         Generally,  medical  professional  liability  insurance  is  offered on
either a "claims made" basis or an  "occurrence"  basis.  "Claims made" policies
insure physicians only against claims actually made during the period covered by
the policy.  "Occurrence"  policies  insure  physicians  against claims based on
occurrences  during the policy  period  regardless of when the claim is actually
made.  APIE  offers only a "claims  made"  policy but  provides  for an extended
reporting  option upon  termination.  APIE  reinsures  100% of all  coverage per
medical incident between  $250,000 and $1,000,000,  primarily  through Lloyds of
London and certain other domestic and international insurance companies.

         The  following  table  presents  selected  financial and other data for
APIE.  APIE has a contract to pay management  fees to FMI based on APIE's earned
premiums before reinsurance. The fee percentage is 13.5% with the provision that
any  profits  of APIE  will be  shared  equally  with  FMI so long as the  total
reimbursement  (fees and  profit  sharing)  do not exceed a cap based on premium
levels.  No profit  sharing fee was received in 1993. In 1996,  1995,  1994, and
1992, management fees attributable to profit sharing were $1,191,000,  $700,000,
$1,107,000, and $1,678,000, respectively.


                                        3

<PAGE>

<TABLE>
<CAPTION>


                             Year Ended December 31,
                                1992                1993                1994                 1995                1996
                               ------              ------              ------               ------              -----
(thousands, except for
number of insureds)

<S>                              <C>        <C>      <C>        <C>      <C>        <C>       <C>        <C>      <C>         <C>
Earned premiums before
  reinsurance premiums......     $27,934             $29,205             $30,261              $30,857             $28,754
Total assets................      96,343              94,019              98,302              101,251              90,193
Total surplus...............       8,209               9,196               9,315                9,402              10,017
Management fees to FMI......       5,397    (1)        3,790    (2)        4,703    (4)         5,010    (6)        5,281     (7)
Number of  insureds.........       5,154               3,575    (3)        3,216    (5)         3,226               3,019
- ----------------
</TABLE>


  (1)      Gross fee of $5,450 less tax refund of $53 attributable to APIE's
             association with FMI.

  (2)      Gross fee of $3,942 less tax refund of $152 attributable to APIE's
             association with FMI.

  (3)        The decrease in the number of insureds  primarily resulted from the
             expiration  in 1993 of  APIE's  contract  with  the  University  of
             Arkansas Medical School.

  (4)      Gross fee of $5,193 less tax credit of $490 attributable to APIE's
             association with FMI.

  (5)        The decrease was the result of APIE's decision to raise premiums on
             certain  unprofitable  specialties.  Included  in  the  totals  are
             doctors for which APIE provides  reinsurance through a relationship
             with another malpractice insurance company.

  (6)      Includes $676 in fees from other carriers directly related to APIE's
             controlled business.

  (7)      Includes $860 in fees from other carriers directly related to APIE's
             controlled business.

         Brokerage and Investment Services

         APS Financial, a fully licensed  broker/dealer,  provides brokerage and
investment  services to  individual  and  institutional  clients.  APS Financial
provides complete portfolio  accounting,  analysis,  and management services, to
insurance companies, banks, and public funds.

         APS  Financial's  employees  have  extensive  investment  expertise and
knowledge.  APS Financial is a member of the National  Association of Securities
Dealers,  Inc. ("NASD") and the Securities Investor Protection  Corporation and,
in addition, is licensed in 44 states.

         Retail  commissions  are charged on both exchange and  over-the-counter
("OTC") transactions generally in accordance with a schedule which APS Financial
has formulated in accordance with NASD  guidelines.  When OTC  transactions  are
executed  by APS  Financial  as a dealer,  APS  Financial  receives,  in lieu of
commission, mark-ups or mark-downs.

         Every  registered  broker-dealer  doing  business  with the  public  is
subject to stringent rules with respect to net capital requirements  promulgated
by the Securities and Exchange  Commission.  These rules,  which are designed to
measure the financial soundness and liquidity of broker-dealers, specify minimum
net  capital  requirements.  Since  the  Company  is  not  itself  a  registered
broker-dealer,  it is not subject to these  rules.  However,  APS  Financial  is
subject to these rules. Compliance with applicable net capital rules could limit
operations of APS Financial such as trading activities that

                                        4

<PAGE>



require the use of significant amounts of capital. A significant  operating loss
or an  extraordinary  charge  against net  capital  could  adversely  affect the
ability  of APS  Financial  to expand or even  maintain  its  present  levels of
business.  At December 31, 1996,  APS Financial  was in compliance  with all net
capital requirements.

         APS Financial  clears and executes its transactions  through  Southwest
Securities,  Inc.  ("Southwest")  on a fully  disclosed  basis.  Southwest  also
processes orders and floor reports,  matches trades, transmits execution reports
to APS Financial and records all data pertinent to trades.  APS Financial pays a
fee based on the number and type of transactions performed by Southwest.

Computer Systems and Software Sales

         In 1994, 1995 and the first six months of 1996, APS Systems, Inc. ("APS
Systems") sold computer systems and self-designed  software designed for sale to
large,  multi-physician  medical clinics,  medical schools,  Physician  Hospital
Organizations  (PHOs) and other  physician  networks.  The Company also provided
facilities  management  of the  total  data  processing  requirements  for those
clinics, schools and networks.

         Effective July 1, 1996, the Company entered into a software development
agreement with  International  Software  Solutions,  Inc.  ("ISSI").  Under this
agreement,  ISSI received newly issued shares of APS Systems, Inc. common stock,
which  diluted the  ownership  of the Company to 49%.  APS Systems  subsequently
changed its name to Syntera Technologies,  Inc. ("Syntera").  ISSI is engaged in
software  consulting/contract  programming  and  brings  new  technology  to the
venture.  Syntera will continue to focus on practice management software for the
medical industry which integrates patient registration,  appointment scheduling,
chart tracking,  billing,  insurance  processing and alternative delivery system
(HMO, PPO) tracking.  Since July 1, 1996 and continuing through 1997,  Syntera's
energies are largely being devoted to  re-development.  APS Systems' 15 years of
practice  management  knowledge and ISSI's technology base are being utilized to
replace all of Syntera's  products with ones that meet the needs of the changing
healthcare  marketplace.  Syntera's  shareholders expect to invest approximately
$3,000,000  in new  capital in the joint  development,  including  approximately
$1,000,000 by the Company.

         Operations of Syntera are  consolidated  with the Company  through June
30, 1996.  Following  that date,  the Company  recorded  its  pro-rata  share of
Syntera's results on the equity basis.

Real Estate

         APS Realty,  Inc.,  a  wholly-owned  subsidiary  of the  Company  ("APS
Realty"),  owns condominium space in an office project located in Austin, Texas.
It leases  approximately 57% of this space to the Company,  its subsidiaries and
Prime Medical. The remainder is leased to unaffiliated parties.



                                        5

<PAGE>



Competition

         APIE competes with numerous insurance  companies in Texas and Arkansas,
primarily  Medical  Protective  Insurance  Company,  St.  Paul  Fire and  Marine
Insurance  Company,  State Volunteer Mutual Company,  Frontier  Insurance Group,
Insurance  Company of America,  Texas Medical  Liability Trust and CNA Insurance
Company. Many of these firms have substantially greater resources than APIE. The
primary competitive factor in selling insurance is a combination of price, terms
of the  policies  offered,  claims  and  other  service  and  claims  settlement
philosophy.

         APS  Financial is also engaged in a highly  competitive  business.  Its
competitors include, with respect to one or more aspects of its business, all of
the member  organizations  of the New York Stock  Exchange and other  registered
securities  exchanges,  all members of the NASD, registered investment advisors,
members of the  various  commodity  exchanges  and  commercial  banks and thrift
institutions.  Many of these  organizations  are national  rather than  regional
firms and have substantially  greater personnel and financial resources than the
Company. Discount brokerage firms oriented to the retail market, including firms
affiliated  with  commercial  banks  and  thrift   institutions,   are  devoting
substantial  funds to advertising and direct  solicitation of customers in order
to increase  their  share of  commission  dollars  and other  securities-related
income.  In many  instances  APS  Financial  is  competing  directly  with  such
organizations.  In addition,  there is competition for investment funds from the
real estate, insurance, banking and thrift industries.

         The   computer-based   management   systems  business  is  also  highly
competitive.  Syntera  competes in this business  with numerous  large and small
competitors.  Many of these firms also have substantially greater resources than
the Company.  The primary  competitive  factors in this business  include price,
system reliability and maintainability, applications software features, delivery
times and commitment to service and support.

Regulation

         FMI has received  certificates of authority from the Texas and Arkansas
insurance departments,  licensing it on behalf of the subscribers of APIE. APIE,
as an insurance company,  is subject to regulation by the insurance  departments
of the  States of Texas  and  Arkansas.  These  regulations  strictly  limit all
financial  dealings  of a  reciprocal  insurance  exchange  with  its  officers,
directors,   affiliates  and   subsidiaries,   including  FMI.   Premium  rates,
advertising,  solicitation of insurance,  types of insurance  issued and general
corporate activity are also subject to regulation by various state agencies.

         APS Financial is subject to extensive regulation under both federal and
state laws. The Securities and Exchange Commission ("SEC") is the federal agency
charged  with  administration  of  the  federal  securities  laws.  Much  of the
regulation of  broker-dealers,  however,  has been delegated to  self-regulatory
organizations, principally the NASD and the national securities exchanges. These
self-regulatory organizations adopt rules (subject to approval by the SEC) which
govern the industry and conduct periodic examinations of member  broker-dealers.
APS  Financial is also subject to  regulation  by state and District of Columbia
securities commissions.

                                        6

<PAGE>




         The  regulations to which APS Financial is subject cover all aspects of
the  securities  business,   including  sales  methods,  trade  practices  among
broker-dealers, uses and safekeeping of customers' funds and securities, capital
structure of  securities  firms,  record-keeping  and the conduct of  directors,
officers and employees. Additional legislation,  changes in rules promulgated by
the SEC and by self-regulatory  organizations,  or changes in the interpretation
or  enforcement  of existing laws and rules,  may directly  affect the method of
operation  and  profitability  of  APS  Financial.   The  SEC,   self-regulatory
organizations  and  state  securities  commissions  may  conduct  administrative
proceedings  which can result in censure,  fine,  suspension or expulsion of APS
Financial,  its officers or employees.  The principal  purpose of regulation and
discipline of  broker-dealers  is the protection of customers and the securities
markets, rather than protection of creditors and shareholders of broker-dealers.

         APS  Financial,   as  a  registered   broker-dealer   and  NASD  member
organization,  is required by federal law to belong to the  Securities  Investor
Protection  Corporation  ("SIPC").  When the SIPC  fund  falls  below a  certain
minimum amount (as it did in 1994 and 1995),  members are required to pay annual
assessments  in  varying  amounts  not to  exceed  .5% of their  adjusted  gross
revenues to restore the fund. This assessment  amounted to approximately  $7,300
in 1995 and  $4,600 in 1994.  The SIPC fund  provides  protection  for  customer
accounts up to $500,000 per  customer,  with a limitation  of $100,000 on claims
for cash balances.

Employees

         At  March  1,  1997,  the  Company  employed,  on a  full  time  basis,
approximately  90  persons,  including  50 by  Insurance  Services,  28  by  APS
Financial,  and 12 directly by the  Company.  Syntera  Technologies  employed 28
persons.  The Company  considers its employee  relations to be good. None of the
Company's  employees  is  represented  by a  labor  union  and the  Company  has
experienced no work stoppages.

ITEM 2.           PROPERTIES

         APS Realty owns  approximately  53,000 square feet of condominium space
in an office  project.  The  Company,  its  subsidiaries  and Prime  Medical use
approximately  30,000  square  feet of this space as their  principal  executive
offices,  and APS  Realty  leases  the  remainder  to  third  parties.  The area
available for lease to third parties was 100% occupied as of March 25, 1997.

ITEM 3.           LEGAL PROCEEDINGS

         The Company is involved in various  claims and legal  actions that have
arisen in the  ordinary  course  of  business.  The  Company  believes  that the
liability  provision in its  financial  statements  is  sufficient  to cover any
unfavorable  outcome  related  to  lawsuits  in  which  it is  currently  named.
Management  believes that  liabilities,  if any, arising from these actions will
not have a significant adverse effect on the financial condition of the Company.
However, due to the uncertain nature of

                                        7

<PAGE>



legal  proceedings,  the actual  outcome of these  lawsuits  may differ from the
liability provision recorded in the Company's financial statements.

ITEM 4.           SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

         None.

                                     PART II

ITEM 5.           MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED
                  STOCKHOLDER MATTERS

         The following table represents the high and low prices of the Company's
Common  Stock  in the  over-the-counter  market  as  reported  by  the  National
Association of Securities  Dealers,  Inc.,  Automated  Quotations System for the
periods  indicated.  At  March  1,  1997,  the  Company  had  approximately  500
shareholders of record.

                                        1996                    1995
                                --------------------    --------------------
                                   High         Low         High       Low

         First Quarter           $10 1/8       $5 1/4      $2 7/8      $2 3/8
         Second Quarter           12 7/8        8           3 7/16      2 11/16
         Third Quarter            10            5 7/8       4 1/2       3
         Fourth Quarter            7 3/8        5 5/8       9 7/8       4

The Company has no present  intention of paying any cash dividends on its Common
Stock in the  foreseeable  future.  It is the  present  policy  of the  Board of
Directors to retain all earnings to provide funds for the growth of the Company.
The declaration and payment of dividends in the future will be determined by the
Board of  Directors  based upon the  Company's  earnings,  financial  condition,
capital  requirements  and such other factors as the Board of Directors may deem
relevant.

ITEM 6.           MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                  CONDITION AND RESULTS OF OPERATIONS OF THE COMPANY

Forward-Looking Statements

The  statements  contained  in this  Report on Form  10-KSB  that are not purely
historical are forward- looking  statements within the meaning of Section 27A of
the  Securities  Act of 1933 and Section 21E of the  Securities  Exchange Act of
1934,  including  statements  regarding  the  Company's   expectations,   hopes,
intentions or strategies  regarding the future. All  forward-looking  statements
included in this document are based on  information  available to the Company on
the date  hereof,  and the  Company  assumes  no  obligation  to update any such
forward-looking  statements.  It is important to note that the Company's  actual
results could differ materially from those in such forward-looking statements.

                                        8

<PAGE>



The reader  should  consult the  Company's  reports on Forms  10-QSB and filings
under the Securities Act of 1993, for factors that could cause actual results to
differ materially from those presented.

The forward-looking statements included herein are based on current expectations
that  involve  numerous  risks and  uncertainties.  Assumptions  relating to the
foregoing  involve  judgements  with  respect  to,  among other  things,  future
economic,  competitive and market conditions and future business decisions,  all
of which are difficult or impossible to predict accurately and many of which are
beyond the  control of the  Company.  Although  the  Company  believes  that the
assumptions underlying the forward-looking statements are reasonable, any of the
assumptions could be inaccurate and,  therefore,  there can be no assurance that
the  forward-looking  statements  included  in this Form 10-KSB will prove to be
accurate.

Results of Operations

1996 Compared to 1995
- ---------------------
Revenues from continuing  operations decreased 43% in 1996 compared to 1995. Net
income  decreased  5% and fully  diluted  earnings per share  decreased  8%. The
reasons for these changes are described below.

Financial Services

         Financial  services  revenues  declined  36% in 1996  compared to 1995.
Insurance management operations were up by 5% as a result of a higher contingent
fee,  which was based on  improved  profits at the  managed  insurance  company.
Broker dealer revenues  declined 61%.  Approximately 60% of the decline was from
not being able to replace the sales of a key broker who left at the beginning of
1996.  The balance of the decline was primarily  attributed  to higher  interest
rates, which reduced activity in the bond market.

         Financial  services  expenses  declined  33%  from  1995.  The  decline
reflects lower activity at the broker/dealer  where lower commissions,  payroll,
legal and office  operations  expenses  combined  for a 51% decline  compared to
1995.  Insurance  management  expenses  increased 7%,  primarily in the areas of
employment taxes and benefits and state taxes.

         Results  in  this  segment  can  vary  from  year  to  year.  Insurance
management has a provision in its contract  whereby it receives a portion of the
managed  insurance  company's  profits.  In the seven years under the  contract,
profit-sharing has ranged from zero to 13% of the segment's revenues. The broker
dealer,  primarily a provider of fixed income securities,  is subject to general
market conditions as well as interest rates and is in an industry  characterized
competition  for top producing  brokers.  The  broker/dealer  continually  seeks
quality  brokers and is opening an office in another city in an effort to expand
its  recruiting  and sales base.  While it expects  positive  results from these
actions,  there is no assurance  that it will be  successful in returning to the
1995 level of performance.


                                        9

<PAGE>



Computer Systems/Software

         Revenues  declined 66% compared to 1995.  Approximately one half of the
decline was a result of the July 1, 1996 software  development  agreement  which
reduced the  Company's  ownership to 49%.  With the change to less than majority
ownership, the Company's interest in the segment was accounted for on the equity
basis and,  consequently,  no revenues were recorded. The balance of the decline
resulted from no new contracts being secured in 1996.

         Expenses in 1996 decreased by 62% compared to 1995.  Approximately  one
half of the decline  was,  again,  the result of the  dilution of the  company's
interest  on July 1,  1996 and  subsequent  adoption  of the  equity  method  of
accounting,  wherein no expenses are recorded on the minority  owners  financial
statements.  The balance of the  decrease  was in costs of hardware and software
and in payroll and benefits, all of which reflect the lower sales.

         Syntera  entered a  redevelopment  phase at mid year.  The new majority
owner brings added  technical  knowledge  and the entire  software line is being
redesigned.  With new software,  Syntera  expects to broaden its marketing focus
and  increase  its sales.  Being able to carry out its plans  within its capital
constraints and marketing the new product successfully remain uncertainties.

Real Estate

         Revenue  increased  7% over 1995.  The increase  reflects  rising lease
rates in Austin, Texas.

         The 2% increase in real estate expenses reflects overall inflation from
1995 to 1996.

Investment and Other

         The decline in investment and other income was primarily in the "other"
category,   where  1995  results  included  a  favorable   settlement  of  prior
litigation. No similar benefit was received in 1996.

         On October 31,  1996,  the Company  invested  $3,300,000  in the common
stock of Exsorbet Industries,  Inc. with a put option. On November 26, 1996, the
Company  exercised its put in exchange for a note receivable from Exsorbet.  The
note is  secured by the  shares  which  were  subject to the put plus all of the
stock and  substantially  all of the  assets  of a  wholly-owned  subsidiary  of
Exsorbet. According to documents which Exsorbet has filed with the Securities 
and Exchange Commission, Exsorbet has limited liquidity, which would currently
not allow payment of the Company's note, and is considering various options to 
secure such funding, including a private placement of debt or equity.

General and Administrative Expenses

         The 93% decline in  expenses  was  primarily a result of timing  rather
than fundamental  changes in operations.  1995's expenses included a contingency
provision  established  to guarantee a future yield on an account (see Note 9 to
the financial  statements).  In 1996,  this  contingency  provision was adjusted
downward as a result of the account's actual  performance.  Approximately 72% of
the

                                       10

<PAGE>



change  between  1996  and  1995  resulted  from  this  contingency   provision.
Additionally,  the successful  collection of certain accounts receivable in 1996
caused the reversal in 1996 of an allowance for doubtful  accounts,  established
in 1995, and accounts for approximately 16% of the change between 1996 and 1995.
Approximately  9% of the decrease in 1996 expenses was from lower payroll costs.
Costs were lower due to reduced performance-based incentives, which are based on
the Company's pretax income and market price.

         Interest expense  declined 57% primarily due to reduced  inventories at
the broker/dealer and the resultant reduction in margin borrowing.

Affiliates

         Earnings from affiliates  decreased 6% compared to 1995.  Prime Medical
grew  dramatically in 1996, but costs  associated with  acquisitions and a stock
offering  reduced  the  impact  of the  growth  in 1996.  Primes's  issuance  of
additional  shares in 1996 reduced the Company's  ownership from 21% to 16%. The
Company,  through  its status as Prime's  largest  shareholder  and  through its
representation  on Prime's  board,  continues to have  significant  influence at
Prime and accounts for its investment using the equity method.

1995 Compared to 1994
- ---------------------
         Revenues from  continuing  operations in 1995 increased 16% compared to
1994. In 1995,  net income  increased  61% and fully diluted  earnings per share
increased  40%  compared to 1994.  The reasons for these  changes are  described
below.

Financial Services

         Financial services revenues were up 20% in 1995 over 1994. The increase
occurred at the broker/dealer,  where falling interest rates attracted more bond
buyers.  The broker/dealer also recorded an inventory profit in 1995 compared to
an equivalent loss in 1994.

         Expenses  increased  9% in 1995  over  1994.  The  increase  was at the
broker/dealer, where increased sales resulted in increased sales commissions.

Computer Systems/Software

         Revenues  declined 12% compared to 1994. The decrease reflects being in
a later stage of the contracts  where lower,  but higher  margin,  revenues from
software  and  installation  were being  recognized,  as opposed to the hardware
revenue being recognized in 1994. All contracts were  substantially  complete at
the end of 1995, compared to a backlog of approximately $1 million at the end of
1994. A lack of new contracts in 1995 reduced the backlog.

         Expenses  in  1995  decreased  by 14% in 1995  compared  to  1994.  The
significant  decrease was in hardware cost of sales,  due to the lower volume of
hardware delivered in 1995. Costs of travel

                                       11

<PAGE>



and legal were also reduced in 1995.  Partially offsetting these reductions was
a 20% increase in personnel-related expenses.

Real Estate

         Revenue  increased 14% over 1994.  The increase  reflects  rising lease
rates in Austin, Texas.

         Expenses of the real estate  segment  increased  13%  compared to 1994.
Utility and property tax rate increases  along with  depreciation  on additional
buildouts were the primary factors in the increase.

Investment and Other

         Approximately  90% of the  increase  over  1994  was  the  result  of a
favorable settlement of prior litigation. The remainder of the increase resulted
primarily from higher investable balances in 1995.

General and Administrative Expenses

         Approximately  67% of the  increase in 1995  resulted  from  increasing
allowances for certain litigation and business related  contingencies (see notes
to consolidated financial statements, Note 9). Performance-based incentive plans
increased  in 1995 as a result  of the  Company's  improved  income  and  market
capitalization  and accounted for  approximately  14% of the increase over 1994.
The  reversal  in 1994 of  certain  allowances  for  litigation,  which had been
settled in 1994, also caused expenses to be lower in 1994 compared to 1995.

         Interest Expense decreased 18% due to lower rates on floating rate debt
and to lower debt outstanding.

Affiliates

         Earnings  from the Company's  investment in Prime Medical  increased by
59% compared to 1994.  Acquisition of additional lithotripsy operations improved
Prime's profitability in 1995. Prime continues to seek growth through additional
acquisitions.

Inflation

         The  operations  of the  Company  are  not  significantly  affected  by
inflation  because,  having no  manufacturing  operations,  the  Company  is not
required  to make  large  investments  in  fixed  assets.  However,  the rate of
inflation  will  affect  certain of the  Company's  expenses,  such as  employee
compensation and benefits.




                                       12

<PAGE>



Liquidity and Capital Resources

         Net working  capital was $8,305,000 and $7,466,000 at December 31, 1996
and 1995, respectively.  The increase in working capital is primarily the result
of income from operations, and from certain contracts/legal  contingencies being
resolved for amounts less than had been accrued.  Historically,  the Company has
maintained a strong working capital position and, using that base, has been able
to satisfy  its  operational  and  capital  expenditure  requirements  with cash
generated  from its operating and  investing  activities.  These same sources of
funds  have  also  allowed  the  Company  to  pursue  investment  and  expansion
opportunities  consistent  with its growth plans.  The ability of the Company to
borrow against its investment in the common stock of Prime Medical (market value
$33,326,000 at December 31, 1996) gives it significant additional liquidity.

         Capital  expenditures  for  equipment  were  $123,000,   $419,000,  and
$99,000, in 1996, 1995 and 1994, respectively. In addition, the Company improved
or  purchased  office  space in 1996,  1995 and 1994 for  $21,000,  $64,000  and
$86,000,  respectively.  The Company expects capital  expenditures in 1997 to be
within the range of the prior three years.

         Under the software  development  agreement at Syntera,  the Company has
committed  approximately  $1,000,000  of new  capital.  At  December  31,  1996,
approximately $120,000 of this commitment had been met and the balance is due in
1997, providing that the development proceeds as planned.

         The  sale  of an  apartment  investment  in  1994  for  $811,000  was a
significant non-recurring item affecting cash flows.

         Management  believes that its present cash position together with funds
generated  from  operations  and from the  ability to borrow  against its equity
position in affiliates will provide sufficient resources to meet all present and
reasonably foreseeable future capital needs.



                                       13

<PAGE>



ITEM 7.           FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

         The  information  required  by this item is  contained  in  Appendix  A
attached hereto.
<TABLE>
<CAPTION>

                             SELECTED FINANCIAL DATA
(In thousands, except per share data)
                                                                   For the Year Ended or At December 31,
                                                     1996           1995          1994          1993          1992
                                                     ----          ------        --------      --------      ------

Selected Income Statement Data:

  <S>                                                <C>           <C>            <C>           <C>          <C>
  Revenues                                           $11,646       20,490         17,737        16,720       17,015


  Earnings from continuing operations before
  income taxes and accounting changes                  2,969        3,483          2,218         1,784          544


  Net earnings                                       $ 1,924        2,024          1,254         1,086          445

  Per Share Amounts - Fully Diluted:

  Net earnings                                          $.45          .49            .35           .30          .11


  Fully Diluted Weighted Average
  Shares Outstanding                                   4,321        4,163          3,614         3,622        3,926


  Selected Balance Sheet Data:

  Total assets                                        24,468       23,740         19,918        18,326       18,024


  Long-term obligations                                   --          574            878         1,215        1,639

  Total liabilities                                    4,086        6,146          4,927         4,562        5,488

  Total equity                                        20,382       17,594         14,491        13,688       12,459

  Book value per share                                 $5.03         4.80           4.47          4.15         3.85

</TABLE>


     Financial  information  and schedules  relating to Prime Medical  Services,
Inc. are  contained in Item 14(a) of the Annual Report on Form 10-K for the year
ended  December 31, 1996 of Prime Medical  Services,  Inc.,  which Item 14(a) is
incorporated herein by reference.

ITEM 8.           CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON
                  ACCOUNTING AND FINANCIAL DISCLOSURE

     None.

                                       14

<PAGE>



                                    PART III

ITEM 9.           DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     The information  required by this item is contained in the definitive proxy
material of the Company to be filed in connection  with its 1997 annual  meeting
of shareholders,  except for the information regarding executive officers of the
Company  which  is  presented  below.  The  information  required  by this  item
contained in such definitive proxy material is incorporated herein by reference.

     As of March 1, 1997, the executive officers of the Company are as follows:

Name                        Age                       Position
- ----------                  ---             -------------------------------
Kenneth S. Shifrin          47              Chairman of the Board, President and
                                                Chief Executive Officer

Duane K. Boyd, Jr.          52              Senior Vice President - Insurance

William H. Hayes            49              Senior Vice President - Finance and
                                                Secretary

Thomas R. Solimine          38              Controller

         All officers serve until the next annual meeting of directors and until
their successors are elected and qualified.

         Mr.  Shifrin has been  Chairman  of the Board since March 1990.  He has
been  President and Chief  Executive  Officer since March 1989 and was President
and Chief  Operating  Officer  from June 1987 to  February  1989.  He has been a
Director of the Company since February 1987. From February 1985 until June 1987,
Mr. Shifrin served as Senior Vice President - Finance and Treasurer. He has been
Chairman of the Board of Prime  Medical since  October  1989.  Mr.  Shifrin is a
Certified   Public   Accountant  and  is  a  member  of  the  Young   Presidents
Organization.

         Mr. Boyd has been Senior Vice President - Insurance since July 1991 and
has also been President and Chief Operating  Officer of FMI since July 1991. Mr.
Boyd is a Certified  Public  Accountant and was with KPMG Peat Marwick from 1974
to June 1991. He was a partner  specializing in the insurance  industry prior to
joining the Company.

         Mr.  Hayes has been the Senior Vice  President - Finance of the Company
since June 1995.  Mr. Hayes was Vice  President  from June 1988 to June 1995 and
was Controller from June 1985 to June 1988. He has been Secretary of the Company
since February 1987 and Chief Financial Officer since June 1987.
Mr. Hayes is a Certified Public Accountant.


                                       15

<PAGE>



         Mr. Solimine has been Controller since June 1994.  He has served as
Secretary for APS Financial since February 1995.  From July 1989 to June 1994,
Mr. Solimine served as Manager of Accounting for the Company.

         There are no family relationships, as defined, between any of the above
executive officers,  and there is no arrangement or understanding between any of
the above  executive  officers  and any other  person  pursuant  to which he was
selected as an officer.  Each of the above executive officers was elected by the
Board of Directors to hold office until the next annual election of officers and
until his successor is elected and qualified or until his earlier resignation or
removal.  The Board of Directors  elects the officers in  conjunction  with each
annual meeting of the stockholders.

ITEM 10.          EXECUTIVE COMPENSATION

         The  information  required by this item is contained in the  definitive
proxy  statement of the Company to be filed in  connection  with its 1997 annual
meeting of shareholders, which information is incorporated herein by reference.

ITEM 11.          SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
                  MANAGEMENT

         The  information  required by this item is contained in the  definitive
proxy  statement of the Company to be filed in  connection  with its 1997 annual
meeting of shareholders, which information is incorporated herein by reference.

ITEM 12.          CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

         The  information  required by this item is contained in the  definitive
proxy  statement of the Company to be filed in  connection  with its 1997 annual
meeting of shareholders, which information is incorporated herein by reference.

ITEM 13.          EXHIBITS AND REPORTS ON FORM 8-K

         (a)      Exhibits (1)

                   3.1   Restated Articles of Incorporation of the Company, as
                          amended.(6)

                   3.2   Amended and Restated Bylaws of the Company.(6)

                   4.1   Specimen of Common Stock Certificate.(2)

                 *10.1   American Physicians Service Group, Inc. Employees
                          Stock Option Plan.(2)

                 *10.2   Form of Employees Incentive Stock Option Agreement.(2)

                                       16

<PAGE>




             *10.3    Form of Employees Non-Qualified Stock Option Agreement.(2)

             *10.4    American Physicians Service Group, Inc. Directors Stock
                        Option Plan.(2)

             *10.5    Form of Directors Stock Option Agreement.(2)

             *10.6    1995 Non-Employee Directors Stock Option Plan of American
                        Physicians Service Group, Inc.(11)

             *10.7    Form of Non-Employee Directors Stock Option Agreement.(9)

             *10.8    1995 Incentive and Non-Qualified Stock Option Plan of
                        American Physicians Service Group, Inc.(9)

             *10.9    Form of Stock Option Agreement (ISO).(9)

             *10.10   Form of Stock Option Agreement (Non-Qualified).(9)

             *10.11   Management Agreement of Attorney-in-Fact, dated August
                        13, 1975, between the Company and American Physicians
                        Insurance Exchange.(2)

              10.12     Rights  Agreement  dated  August 16,  1989  between  the
                        Company and Texas  American  Bridge Bank N.A., as rights
                        agent,  and letter to the  Company  stockholders,  dated
                        August 16, 1989.(5)

              10.13   Stock  Purchase  Agreement  dated  October  11,  1989
                        between  the  Company  and  Texas   American   Energy
                        Corporation   ("TAE"),   Standstill  Agreement  dated
                        October 11,  1989 among the  Company,  TAE,  Shamrock
                        Associates and Paul O. Koether,  and Agreement  dated
                        October 11, 1989 among the Company, Prime Medical and
                        Shamrock Associates.(3)

             *10.14   Profit Sharing Plan or Trust, effective December 1, 1984,
                        of the Company.(4)

              10.15     Loan Agreement  dated April 7, 1992,  among the Company,
                        APS Realty and NationsBank of Texas, N.A.(7)

              10.16     Promissory  Note dated  April 7, 1992,  executed  by APS
                        Realty in the principal amount of $1,000,000  payable to
                        NationsBank of Texas, N.A.(7)

              10.17   Stock Purchase Agreement dated September 30, 1996 between
                        the Company and Exsorbet Industries, Inc.(10)


                                       17

<PAGE>


               10.18    Stock Put Agreement dated September 30, 1996 between the
                         Company and Exsorbet Industries, Inc.(10)

               10.19    Shareholder Rights Agreement dated September 30, 1996
                         between the Company and Exsorbet Industries, Inc.(10)

               10.20     Warrant  dated  September 30, 1996 for shares of common
                         stock  issued to the  Company by  Exsorbet  Industries,
                         Inc.(10)

               10.21     Contingent  Warrant  Agreement dated September 30, 1996
                         for  shares of common  stock  issued to the  Company by
                         Exsorbet Industries, Inc.(10)

               10.22     Option  Agreements  dated September 30, 1996 for shares
                         of  Exsorbet  common  stock  issued to the  Company  by
                         officers and directors of Exsorbet Industries, Inc.(10)

               10.23    Agreement dated September 30, 1996 with Exsorbet
                         Industries, Inc. related to options issued by officers
                         and directors of Exsorbet.(10)

               10.24     Guaranty  Agreements  dated  September 30, 1996 between
                         the Company and  subsidiaries  of Exsorbet  Industries,
                         Inc.
                         (10)

               10.25    Promissory Note dated November 26, 1996 executed by
                         Exsorbet Industries, Inc. and payable to the Company in
                         the amount of $3,300,000.(10)

               11.1     Computation of per share earnings (included in Appendix
                         A).(10)

               21.1     List of subsidiaries of the Company.(10)

               23.1     Independent Auditors Consent of KPMG Peat Marwick, LLP.
                         (10)

               27.1     Financial Data Schedule (EDGAR filing).
- ----------------

      (*)     Executive Compensation plans and arrangements.

      (1) The exhibits  listed will be  furnished  to any  security  holder upon
written  request for such exhibit to W. H. Hayes,  American  Physicians  Service
Group, Inc., 1301 Capital of Texas Highway,  Suite C-300, Austin, Texas 78746. A
reproduction  fee of $.20 per page  will be  charged  for  documents  requested.
Copies  of all  public  filings  are  also  available  from  the SEC by  calling
Disclosure, Inc. at 800-638-8241.

      (2)     Filed as an Exhibit to the Registration Statement on Form S-1,
Registration No. 2-85321, of the Company, and incorporated herein by reference.

                                       18

<PAGE>


      (3) Filed as an Exhibit to the  Current  Report on Form 8-K of the Company
dated October 20, 1989 and incorporated herein by reference.

      (4) Filed as an Exhibit to the Annual  Report on Form 10-K of the  Company
for the year ended December 31, 1984 and incorporated herein by reference.

      (5) Filed as an Exhibit to the  Current  Report on Form 8-K of the Company
dated September 5, 1989 and incorporated herein by reference.

      (6) Filed as an Exhibit to the Annual  Report on Form 10-K of the  Company
for the year ended December 31, 1990 and incorporated herein by reference.

      (7) Filed as an Exhibit to the Annual  Report on Form 10-K of the  Company
for the year ended December 31, 1992 and incorporated herein by reference.

      (8) Filed as an Exhibit to the Annual Report on Form 10-KSB of the Company
for the year ended December 31, 1994 and incorporated herein by reference.

      (9) Filed as an Exhibit to the Annual Report on Form 10-KSB of the Company
for the year ended December 31, 1995 and incorporated herein by reference.

      (10)    Filed herewith.

(b)   Reports on Form 8-K.

              No current  report on Form 8-k was filed by the Company during the
fourth quarter of 1996.









                                       19

<PAGE>



                                   SIGNATURES

         Pursuant to the  requirements  of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.
                                        AMERICAN PHYSICIANS SERVICE GROUP, INC.


                                        By: /s/ Kenneth S. Shifrin
                                           Kenneth S. Shifrin, Chairman of the
                                             Board and Chief Executive Officer

                                        Date:  March 26, 1997

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
this report has been signed by the following persons on behalf of the registrant
and in the capacities and on the dates indicated.

By: /s/ Kenneth S. Shifrin
    ---------------------- 
     Kenneth S. Shifrin
     Chairman of the Board and
     Chief Executive Officer
     (Principal Executive Officer)

Date:    March 26, 1997


By: /s/ W. H. Hayes
    ---------------- 
     W. H. Hayes
     Senior Vice President - Finance, Secretary
     and Chief Financial Officer
     (Principal Financial Officer)

Date:    March 26, 1997


By: /s/ Thomas R. Solimine
    ---------------------- 
     Thomas R. Solimine
     Controller
     (Principal Accounting Officer)

Date:    March 26, 1997


                                       20

<PAGE>



By: /s/ Richard J. Clark
    -------------------- 
     Richard J. Clark, Director

Date:    March 26, 1997



By: /s/ Jack Murphy
    --------------- 
     Jack Murphy, Director

Date:    March 26, 1997



By: /s/ Robert L. Myer
    ------------------ 
     Robert L. Myer, Director

Date:    March 26, 1997



By: /s/ William A. Searles
    ---------------------- 
     William A. Searles, Director

Date:    March 26, 1997



                                       21

<PAGE>



                                   SIGNATURES

         Pursuant to the  requirements  of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                        AMERICAN PHYSICIANS SERVICE GROUP, INC.



                                        By:
                                           -----------------------------------
                                           Kenneth S. Shifrin, Chairman of the
                                             Board and Chief Executive Officer

                                        Date:  March 26, 1997

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
this report has been signed by the following persons on behalf of the registrant
and in the capacities and on the dates indicated.




By:
   -------------------------- 
     Kenneth S. Shifrin
     Chairman of the Board and
     Chief Executive Officer
     (Principal Executive Officer)

Date:    March 26, 1997


By:
    ------------------------- 
     W. H. Hayes
     Senior Vice President - Finance, Secretary
     and Chief Financial Officer
     (Principal Financial Officer)

Date:    March 26, 1997





                                       22

<PAGE>


By:
    ------------------------- 
     Thomas R. Solimine
     Controller
     (Principal Accounting Officer)

Date:    March 26, 1997



By:
    ------------------------- 
     Richard J. Clark, Director

Date:    March 26, 1997



By:
    ------------------------- 
     Jack Murphy, Director

Date:    March 26, 1997




By:
    ------------------------- 
     Robert L. Myer, Director

Date:    March 26, 1997




By:
    ------------------------- 
     William A. Searles, Director

Date:    March 26, 1996











                                       23

<PAGE>


                                   APPENDIX A



                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS


                                                                          Page

Independent Auditors' Report                                               A-2

Financial Statements

 Consolidated Statements of Earnings for the years                         A-3 
 ended December 31, 1996, 1995 and 1994.

 Consolidated Balance Sheets at December 31, 1996                          A-5
 and December 31, 1995.

 Consolidated Statements of Cash Flows for the years                       A-7 
 ended December 31, 1996, 1995 and 1994.

 Consolidated Statements of Shareholders' Equity                           A-9 
 at December 31, 1996, 1995 and 1994.

 Notes to Consolidated Financial Statements.                               A-10




                                       A-1

<PAGE>


                          Independent Auditors' Report




The Board of Directors and Shareholders
American Physicians Service Group, Inc.:

We have audited the accompanying  consolidated  financial statements of American
Physicians  Service Group,  Inc. and  subsidiaries  ("Company") as listed in the
accompanying   index.   These   consolidated   financial   statements   are  the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these consolidated financial statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated  financial statements referred to above present
fairly, in all material respects,  the financial position of American Physicians
Service  Group,  Inc. and  subsidiaries  at December 31, 1996 and 1995,  and the
results  of their  operations  and their cash flows for each of the years in the
three-year period ended December 31, 1996, in conformity with generally accepted
accounting principles.



Austin, Texas
February 28, 1997




                                       A-2
<PAGE>




                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
                       CONSOLIDATED STATEMENTS OF EARNINGS

(In thousands, except per share data)
<TABLE>
<CAPTION>
                                                                                         Year Ended
                                                                                         December 31,
                                                                            1996           1995               1994
                                                                           -----          -----              -----
<S>                                                                      <C>              <C>               <C>                     
Revenues:
  Financial services (Note 3)                                            $ 8,863          13,762            11,451
  Computer systems/software (Note 14)                                      1,590           4,738             5,404
  Real estate (Note 6)                                                       717             668               586
  Investments and other (Note 2)                                             476           1,322               296
                                                                          ------          ------            ------
    Total revenues                                                        11,646          20,490            17,737

Expenses:
  Financial services                                                       7,736          11,582            10,626
  Computer systems/software                                                1,627           4,262             4,970
  Real estate                                                                521             510               452
  General and administrative                                                 150           2,037               255
  Interest                                                                    54             124               151
                                                                          ------          ------            ------
    Total expenses                                                        10,088          18,515            16,454

  Operating income                                                         1,558           1,975             1,283

  Equity in earnings of
    unconsolidated affiliates (Note 14)                                    1,411           1,508               950


  Minority interest in consolidated
    earnings                                                                  --              --            (   15)
                                                                          ------          ------            ------

  Earnings from continuing operations before                               2,969           3,483             2,218
    income taxes

  Income tax expense (Note 10)                                             1,045           1,108               798
                                                                          ------          ------            ------      

  Earnings from continuing operations                                      1,924           2,375             1,420
                                                                          ------          ------            ------

Loss from discontinued operations net of income
   tax benefit of $-0-, $181 and $86 in 1996, 1995
   and 1994, respectively                                                    --           (  351)           (  166)
                                                                          ------          ------            ------

    Net earnings                                                         $ 1,924           2,024             1,254
                                                                          ======          ======            ======

</TABLE>


See accompanying notes to consolidated financial statements.

                                       A-3

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
                       CONSOLIDATED STATEMENTS OF EARNINGS

(In thousands, except per share amounts)
<TABLE>
<CAPTION>


                                                                            1996           1995            1994
                                                                           -----          -----           -----
  <S>                                                                     <C>             <C>             <C>    
  Earnings per common share:

  Primary:
    Earnings from continuing operations                                   $ 0.45           0.62            0.40

    Discontinued operations                                                  --           (0.09)          (0.05)
                                                                           -----          -----           -----

       Net earnings                                                       $ 0.45           0.53            0.35
                                                                           =====          =====           =====

  Fully diluted:
    Earnings from continuing operations                                   $ 0.45           0.57            0.40

    Discontinued operations                                                   --          (0.08)          (0.05)
                                                                           -----          -----           -----

    Net earnings                                                          $ 0.45           0.49            0.35
                                                                           =====          =====           =====


  Primary weighted average shares
    outstanding                                                            4,269          3,843           3,537
                                                                           =====          =====           =====

  Fully diluted weighted average
    shares outstanding                                                     4,321          4,163           3,614
                                                                           =====          =====           =====


  See accompanying notes to consolidated financial statements.

</TABLE>


                                       A-4

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
                           CONSOLIDATED BALANCE SHEETS


(In thousands, except share data)


                                                              December 31,
                                                          1996              1995
                                                         -----             -----

ASSETS

Current assets:
     Cash and cash equivalents                         $ 5,770             6,798
     Marketable securities (Note 2)                         29             2,004
     Trading account securities                            699             1,014
     Management fees and other receivables (Note 3)        512             1,748
     Income tax receivable                                 650                --
     Notes receivable - current (Note 4)                 3,447               223
     Receivable from clearing broker                       279               780
     Net deferred tax asset (Note 10)                       --               159
     Prepaid expenses and other                            239               312
                                                        ------            ------
          Total current assets                          11,625            13,038


Notes receivable, less current portion (Note 4)            179                83
Property and equipment, net (Note 6)                     1,781             2,129
Investment in affiliates (Note 14)                       9,657             7,412
Other assets                                             1,226             1,078
                                                        ------            ------
          Total assets                                 $24,468            23,740
                                                       =======           =======




See accompanying notes to consolidated financial statements.

                                       A-5

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
                           CONSOLIDATED BALANCE SHEETS


(In thousands, except share data)


 
                                                                December 31,
                                                            1996            1995
                                                           -----           -----

LIABILITIES AND SHAREHOLDERS' EQUITY

Current liabilities:
   Current portion of long term obligations (Note 8)     $  542              299
   Accounts payable - trade                                 382              353
   Accrued compensation                                     252              861
   Accrued expenses and other liabilities (Note 7)        2,144            3,501
   Income taxes payable                                      --              558
                                                          -----            -----
       Total current liabilities                          3,320            5,572


Net deferred income tax liability                           766               --
Long-term obligations (Note 8)                               --              574
                                                          -----            -----
       Total liabilities                                  4,086            6,146


Shareholders' equity:
   Preferred stock, $1.00 par value, 1,000,000
     shares authorized                                      --                --
   Common stock, $0.10 par value, 20,000,000 shares
     authorized; 4,049,195 issued at 12/31/96
     and 3,663,871 at 12/31/95                              405              366
   Additional paid-in capital                             5,366            4,530
   Unrealized holding losses                           (     11)              --
   Retained earnings                                     14,622           12,698
                                                        -------          -------
       Total shareholders' equity                        20,382           17,594

Commitments and contingencies
   (notes 6, 8, 9, 11, 12 and 14)
       Total liabilities and shareholders' equity       $24,468           23,740
                                                        =======          =======


See accompanying notes to consolidated financial statements.


                                       A-6

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
                      Consolidated Statements of Cash Flows

(In thousands)
<TABLE>
<CAPTION>


                                                                                     Year Ended
                                                                                     December 31,
                                                                           1996             1995              1994
                                                                        -------          -------           -------                  
<S>                                                                    <C>              <C>               <C>
Cash flows from operating activities:
  Cash received from customers                                         $ 11,123           21,068            16,138
  Cash paid to suppliers and employees                                 ( 11,064)         (17,860)          (15,740)
  Change in trading account securities                                      315         (    353)              475
  Change in receivable from clearing broker                                 501         (    289)         (    308)
  Interest paid                                                        (     54)        (    124)         (    151)
  Income taxes paid                                                    (    611)        (    494)         (     15)
  Interest, dividends and other investment
    proceeds                                                                459            1,322               456
                                                                         -------         -------           -------
     Net cash provided by operating activities                              669            3,270               855

Cash flows from investing activities:
  Payments for purchase of property and
    equipment                                                          (    144)        (    483)         (    185)
  Net decrease (increase) in marketable
    securities                                                            2,045         (    530)          ( 1,183)
  Investment in affiliate                                              (    244)              --                --
  Proceeds from sale of fixed assets                                         --               47                76
  Funds loaned to others                                                ( 3,442)              --                --
  Proceeds from the sale of discontinued operation                           --               67                --
  Collection of notes receivable                                             --            1,119             1,863
    Net cash provided by (used in) investing                             -------         -------           -------                  
      activities                                                        ( 1,785)             220               571

Cash flows from financing activities:
  Repayment of long-term obligations                                   (    163)        (    332)         (    613)
  Decrease in minority interest                                              --               --          (     91)
  Acquisition of treasury stock                                        (    453)        (    125)               --
  Exercise of stock options                                                 704              499                --
                                                                         -------         -------           -------         
     Net cash provided by (used in) financing activities                     88               42          (    704)

Net change in cash and cash equivalents                                 ( 1,028)           3,532               722

Cash and cash equivalents at beginning of period                          6,798            3,266             2,544
                                                                          -----            -----             -----
Cash and cash equivalents at end of period                                5,770            6,798             3,266
                                                                          =====            =====             =====

</TABLE>

See accompanying notes to consolidated financial statements.


                                       A-7

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
                Consolidated Statements of Cash Flows, continued
(In thousands)
<TABLE>
<CAPTION>
                                                                                     Year Ended
                                                                                     December 31,
                              
                                                                           1996             1995              1994
                                                                          ------          ------            ------
<S>                                                                     <C>               <C>              <C>
Reconciliation of net earnings to net cash from operating activities:
 Net earnings                                                           $ 1,923             2,024            1,254
Adjustments to reconcile net earnings to
  net cash from operating activities:
Depreciation and amortization                                               324               399              323
Minority interest in consolidated earnings                                   --                --               15
Undistributed earnings of affiliate                                     ( 1,411)          ( 1,508)         (   950)
Recognition of long-term capital loss carryback                              --                --               88
Loss (gain) on sale or disposition of assets                                 --           (    72)              31
Gain on sales of securities                                             (    81)          (    50)         (    33)
Change in federal income tax payable                                    (   584)              301              129
Provision for deferred income tax                                           925                27              480
Change in trading securities                                                315           (   353)             475
Loss on permanent impairment of debt securities                              --                --              160
Change in receivable from clearing broker                                   501           (   289)         (   308)
Change in management fees and other receivable                               17             1,183          ( 1,301)
Change in prepaids and other current assets                                  24               493          (   358)
Change in long-term assets                                                  265                --               --
Change in trade payable                                                      53           (   456)              11
Change in accrued expenses and other liabilities                        ( 1,602)            1,571              839
                                                                         -------          -------          -------
  Net cash from operating activities                                    $   669             3,270              855
                                                                         =======          =======          =======
</TABLE>

Summary of non-cash transactions:

During 1996,  non-qualified employee stock options were exercised which resulted
in a reduction  of income tax payable  and a  corresponding  addition to paid-in
capital of $624.

During the third  quarter,  1995, the investment in the Company by the Company's
affiliate,  Prime  Medical  Services,  Inc.,  became  immaterial.  Consequently,
Reciprocal  Stockholdings  fell  to  zero  while  the  Company's  investment  in
affiliate increased by $543.

The Company acquired $294,000 in treasury stock by exchanging  $294,000 in Prime
Medical Services, Inc. Common stock during 1995.

In 1995,  the  Company  sold APS  Communications  in a non-cash  transaction  as
follows:

         Note received                                                   $  183
                                                                          =====

         Fixed assets sold                                                 ( 48)
         Deferred income                                                   (135)
                                                                          -----
                                                                         $ (183)
                                                                          =====

See accompanying notes to consolidated financial statements.


                                       A-8

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
                    Consolidated Statements of Shareholders'
                  Equity For the years ended December 31, 1996,
                                  1995 and 1994


(In thousands, except share data)
<TABLE>
<CAPTION>

                                                              Additional     Unrealized                                    Total
                                          Common Stock           paid-in       holding     Retained        Reciprocal  shareholders'
                                   Shares          Amount        capital        gains      earnings     stockholdings     equity
                                   --------------  ---------  -------------  ------------- -----------  -------------- -------------
<S>                                 <C>              <C>          <C>              <C>      <C>               <C>           <C>    
Balance January 1, 1994             3,471,689          347        4,468             --       9,420            (  547)       13,688
Net earnings                               --          --           --              --       1,254                 --        1,254
Unrealized gains on securities
    available for sale                     --          --           --              44          --                 --           44
Shares repurchased & cancelled             (5)         --           --              --          --                 --           --
Contributed capital                        --          --            1              --          --                 --            1
Pro rata portion of Company
   common stock held by
   affiliate (Note 14)                     --          --           --              --          --                  4             4
                                   --------------  ---------  -------------  ------------- -----------  -------------- -------------
Balance December 31, 1994           3,471,684        $347        4,469              44      10,674              ( 543)       14,991
Net earnings                               --          --           --              --       2,024                 --         2,024
Unrealized loss on securities
   available for sale                      --          --           --             (44)         --                 --           (44)
Shares issued (Note 12)               314,333          31          468              --          --                 --           499
Shares repurchased &
cancelled (Note 14)                  (122,146)        (12)        (407)             --          --                 --          (419)
Pro rata portion of Company
    common stock held by
    affiliate (Note 14)                    --          --           --              --          --                543           543
                                   --------------  ---------  -------------  ------------- -----------  -------------- -------------
Balance December 31, 1995           3,663,871         366        4,530              --      12,698                 --        17,594

Net earnings                               --          --           --              --       1,924                 --         1,924
Unrealized loss on securities
   available for sale, net of tax          --          --           --             (11)         --                 --           (11)
Shares issued (Note 12)               450,000          45          659              --          --                 --           704
Shares repurchased &
cancelled                          (   64,676)       (  6)        (447)             --          --                 --          (453)
Income tax benefit of
   non-qualified option
    exercises                              --          --          624              --          --                 --           624
                                   --------------  ---------- -------------  ------------- -----------  -------------- -------------
Balance December 31, 1996           4,049,195         405        5,366             (11)     14,622                 --        20,382
                                   ==============  ========== =============  ============= ===========  ============== =============
</TABLE>

See accompanying notes to consolidated financial statements.

                                       A-9

<PAGE>






                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
                   Notes To Consolidated Financial Statements
                        December 31, 1996, 1995 and 1994

(1)      Summary of Significant Accounting Policies

         (a)      General

                  American   Physicians   Service   Group,   Inc.   through  its
                  subsidiaries,   provides   financial   services  that  include
                  management of  malpractice  insurance  companies and brokerage
                  and  investment  services  to  individuals  and  institutions.
                  Computer  systems and software  packages for medical  clinics,
                  medical schools,  physician  hospital  organizations and other
                  physician networks are provided by an affiliate. The brokerage
                  and computer  businesses  have clients  nationally.  Insurance
                  management is a service  provided  primarily in Texas,  but is
                  available to clients  nationally.  American Physicians Service
                  Group,  Inc.  also owns  space in the  office  building  which
                  serves as its headquarters. Through its real estate subsidiary
                  it leases space that is surplus to its needs. During the three
                  years  presented  in  the  financial   statements,   financial
                  services and computer systems generated  approximately 68% and
                  24%, respectively, of total revenues.

         (b)      Estimates

                  The  preparation  of financial  statements in conformity  with
                  generally accepted  accounting  principles required management
                  to make  estimates  and  assumptions  that affect the reported
                  amounts of assets and liabilities and disclosure of contingent
                  assets and liabilities at the date of the financial statements
                  and the reported  amounts of revenues and expenses  during the
                  reporting  period.  Actual  results  could  differ  from those
                  estimates.

         (c)      Principles of Consolidation

                  The consolidated  financial statements include the accounts of
                  American  Physicians  Service  Group,  Inc. and of  subsidiary
                  companies  more than 50%  owned  ("Company").  Investments  in
                  affiliated companies and other entities in which the Company's
                  investment   is  for  less  than  50%  of  the  common  shares
                  outstanding   and  where  the   Company   exerts   significant
                  influence, are accounted for by the equity method.

                  All significant  intercompany  transactions  and balances have
                  been eliminated from the accompanying  consolidated  financial
                  statements.

         (d)      Revenue Recognition

                  Financial  services  revenues  related to management  fees are
                  recognized  monthly as a percentage of the earned  premiums of
                  the managed company. The profit sharing component

                                      A-10

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(1)      Summary of Significant Accounting Policies, continued

                  of these fees is recognized when it is reasonably certain that
                  the managed company will have an annual profit.  Revenues 
                  related to securities transactions are recognized on a trade 
                  date basis.

                  Revenue  from  software  product  sales is  recognized  on the
                  percentage of completion  method.  Revenue from hardware sales
                  is recognized when the hardware is delivered.  Maintenance and
                  service  contracts  related to software  products are deferred
                  and  recognized  over the term of the contract  (generally one
                  year) using the straight-line method.

                  Real estate rental income is recognized monthly based on lease
                  agreements.  Costs of leasehold  improvements  are capitalized
                  and amortized monthly over the term of the lease.

                  Investment  revenues are recognized as accrued on highly-rated
                  investments and as received on lesser grades.

         (e)      Broker, Dealer and Securities Transactions

                  Securities  transactions  are  recorded  in the  accounts on a
                  trade date basis.

         (f)      Marketable Securities

                  The Company's investments in debt and equity securities are to
                  be  classified  in  three  categories  and  accounted  for  as
                  follows:

                  Classification            Accounting
                  --------------            ----------
                  Held to maturity          Amortized cost
                  Trading  securities       Fair value,  unrealized  gains and 
                                            losses included in earnings 
                  Available for sale        Fair value, unrealized gains and 
                                            losses excluded from earnings and 
                                            reported as a separate component of 
                                            stockholders' equity, net of
                                            applicable income taxes

                  The Company has  included  its  marketable  securities  in the
                  available for sale category.

         (g)      Property and Equipment

                  Property  and  equipment  are  stated  at cost.  Property  and
                  equipment  and  rental  property  are  depreciated  using  the
                  straight-line  method over the  estimated  useful lives of the
                  respective assets (3 to 40 years).

                                      A-11

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(1)      Summary of Significant Accounting Policies, continued

         (h)      Long-Lived Assets

                  Long-lived assets are reviewed for impairment  whenever events
                  or changes in circumstances  indicate that the carrying amount
                  may  not be  recoverable.  If the sum of the  expected  future
                  undiscounted  cash flows is less than the  carrying  amount of
                  the  asset,  a loss is  recognized  if there  is a  difference
                  between the fair value and carrying value of the asset.

         (i)      Income Taxes

                  Deferred tax assets and  liabilities  are  recognized  for the
                  future tax  consequences  attributable to differences  between
                  the financial  statement  carrying  amounts of existing assets
                  and liabilities  and their  respective tax bases and operating
                  loss and tax  credit  carryforwards.  Deferred  tax assets and
                  liabilities  are measured  using enacted tax rates expected to
                  apply to taxable income in the years in which those  temporary
                  differences  are  expected to be  recovered  or  settled.  The
                  effect on deferred tax assets and  liabilities  of a change in
                  tax rates is  recognized in income in the period that includes
                  the enactment date.

         (j)      Earnings Per Share

                  Earnings  per share have been  computed  based on the weighted
                  average  number  of  shares   outstanding   and  common  share
                  equivalents.

         (k)      Cash and Cash Equivalents

                  Cash and cash  equivalents  include  cash  and  highly  liquid
                  investments with an original maturity of 90 days or less.

         (l)      Post Retirement/Post Employment Benefits

                  The Company's employee benefits do not extend beyond an 
                  employee's active employment.Consequently, no accrual for 
                  future benefits as prescribed in Statement of Financial
                  Accounting Standards No. 106 and No. 112 has been recorded.

         (m)      Derivative Financial Instruments

                  The  Company  has  not  made  use  of   derivative   financial
                  instruments as defined in the Financial  Accounting  Standards
                  Board  Statement of Financial  Accounting  Standards  No. 119,
                  Disclosure  about  Derivative  Financial  Instruments and Fair
                  Value of Financial Instruments.


                                      A-12

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(1)      Summary of Significant Accounting Policies, continued

         (n)      Notes Receivable

                  Notes  receivable  are recorded at cost,  less  allowances for
                  doubtful   accounts   when   deemed   necessary.   Management,
                  considering  current  information  and  events  regarding  the
                  borrowers ability to repay their obligations, considers a note
                  to be impaired  when it is probable  that the Company  will be
                  unable to collect all amounts due according to the contractual
                  terms of the note  agreement.  When a loan is considered to be
                  impaired,  the amount of the  impairment is measured  based on
                  the present value of expected future cash flows  discounted at
                  the note's  effective  interest  rate.  Impairment  losses are
                  included in the  allowance  for  doubtful  accounts  through a
                  charge to bad debt expense.  Cash  receipts on impaired  notes
                  receivable are applied to reduce the principal  amount of such
                  notes  until  the  principal   has  been   recovered  and  are
                  recognized as interest income, thereafter.

         (o)      Stock-Based Compensation

                  The  Company has adopted  the  disclosure-only  provisions  of
                  Statement  of   Financial   Accounting   Standards   No.  123,
                  Accounting for Stock-Based Compensation ("Statement 123"), but
                  applies Accounting Principles Board Opinion No. 25, Accounting
                  for Stock Issued to  Employees,  in  accounting  for its stock
                  option plans.

         (p)      Reclassification

                  Certain  reclassifications have been made to amounts presented
                  in previous years to be consistent with the 1996 presentation.

(2)      Marketable Securities

                  The Company holds various marketable  securities as short-term
                  investments.  At December 31, 1996 and 1995,  these marketable
                  securities consisted of:

                                                               December 31,
                                                          1996             1995
                                                         -----            -----
         
         Equity securities, at cost                    $45,000               --
         Debt securities, at cost                      $    --       $2,004,000
         Less: adjustment to fair value               ($16,000)              --
                                                      --------        ---------
         Total marketable securities at
           fair value                                  $29,000       $2,004,000
                                                      ========        =========

                                      A-13

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(2)      Marketable Securities, continued

         At December 31, 1996, there were $16,000 in gross unrealized losses. At
         December 31, 1995 there were no gross unrealized gains or losses.

         Investment income includes the following:

                                          1996             1995            1994
                                         -----            -----           -----
         Interest                    $ 351,000        $ 243,000          68,000
         Realized gains                 81,000           50,000          42,000
         Realized losses                    --               --        ( 10,000)
         Permanent impairment of
           debt securities                  --               --        (160,000)
                                       -------          -------         -------
                                     $ 432,000        $ 293,000        ( 60,000)
                                       =======          =======         =======

         No individual  issuer exceeded 10% of shareholders'  equity at December
         31, 1996 or 1995.

(3)      Management Fees and Other Receivables

         Management fees and other receivables consist of the following:

                                                            December 31,
                                                      1996              1995
                                                     -----             -----
         Management fees receivable              $ 256,000           342,000
         Trade accounts receivable                  16,000         1,034,000
         Less:  allowance for doubtful accounts         --        (  132,000)
         Accrued interest receivable                12,000            45,000
         Other receivables                         228,000           459,000
                                                   -------         ---------
                                                 $ 512,000         1,748,000
                                                   =======         =========   

         The Company earns  management fees by providing for the full management
         of American Physicians  Insurance Exchange ("APIE") under the direction
         of APIE's doctor Board of  Directors.  Subject to the direction of this
         Board, FMI sells and issues policies, investigates, settles and defends
         claims,   and  otherwise  manages  APIE's  affairs.   The  Company  has
         previously managed other insurance companies.

         The  Company  earned  management  fees of  $5,561,000,  $5,288,000  and
         $5,358,000 and received expense  reimbursements  of $346,000,  $355,000
         and  $247,000 for the years ended  December  31,  1996,  1995 and 1994,
         respectively, related to these agreements.




                                      A-14

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued





(4)      Notes Receivable

         Notes receivable consists of the following:
<TABLE>
<CAPTION>
                                                                                                  December 31,
                                                                                            1996              1995
         <S>                                                                          <C>                  <C>
         Reagan Publishing Company 
            The  unsecured  note bears  interest at 7%.
            Payments of $50,000 plus  interest  are due June 30, 1996,  December
            31, 1996, and June 30, 1997, with the balance due
            December 31, 1997.  The note is in default                                
            at December 31, 1996 and the parties are
            attempting to renegotiate the terms.                                      $  183,000           183,000

         The Billings Clinic
           The note is secured by  computer  equipment  and bears  interest at a
           weighted  average rate of 11.38%.  Monthly  payments of principal and
           interest are due through
           December 1996.                                                                     --           123,000

         Exsorbet Industries, Inc.
           This note is secured by 1,200,000 shares
           of Exsorbet Industries, Inc. common stock
           and certain assets of 7-7, Inc.   The note
           bears interest at 15.75%.  Principal and
           interest are due October 1, 1997.                                          $3,300,000               --

         Employees
           Two employees have loans from the Company as employment  inducements.
           The  notes  are  non-interest  bearing  and are  being  forgiven  and
           amortized monthly over three to four year periods.  The notes are due
           and payable should the employees
           terminate employment.                                                         143,000               --
                                                                                       ---------          -------
                                                                                       3,626,000          306,000
                                        
                                       
         Less current portion                                                          3,447,000          223,000
                                                                                       ---------         --------
         Long term portion                                                            $  179,000           83,000
                                                                                       =========         ========
</TABLE>
                                      A-15

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(4)      Notes Receivable, continued
     
         The Company's note receivable from Exsorbet Industries, Inc. 
         ("Exsorbet") (NASDAQ:EXSO), a diversified environmental and technical
         services company, is in excess of 10% of stockholders' equity at 
         December 31, 1996 and represents a concentration of credit risk. 
         Exsorbet's common stock sales price was $1.68 per share on the basis of
         the average high and low sales price of the stock on March 7, 1997. 
         According to documents which Exsorbet has filed with the Securities and
         Exchange Commission, Exsorbet has limited liquidity which would 
         currently not allow payment of the Company's note and, is considering
         various options to secure such funding including a private placement
         of debt or equity.
         

(5)      Fair Value of Financial Instruments

         Statement of Financial Accounting Standards No. 107, "Disclosures About
         Fair Value of Financial Instruments" (Statement 107), requires that the
         Company disclose estimated fair values for its financial instruments as
         of December 31, 1995 and 1994:
<TABLE>
<CAPTION>

                                                                 1996                              1995
                                                     Carrying           Fair            Carrying           Fair
                                                     Amount            Value            Amount            Value

         <S>                                          <C>               <C>              <C>               <C>  
         Cash and cash equivalents                    5,770             5,770            6,798             6,798
         Marketable Securities and Trading
              Account Securities                        728               728            3,018             3,018
         Management fees and other
              Receivables                               512               512            1,748             1,748
         Notes receivable                             3,626             3,594              306               293
         Receivable from clearing broker                279               279              780               780
         Debt                                           542               542              873               873
         Accounts Payable                               382               382              353               353
</TABLE>

         Fair value estimates,  methods, and assumptions are set forth below for
         the Company's financial instruments.

         Cash and Cash Equivalents
         -------------------------
         The carrying  amounts for cash and cash  equivalents  approximate  fair
         value  because  they  mature  in less  than 90 days and do not  present
         unanticipated credit concerns.

         Marketable Securities and Trading Account
         -----------------------------------------
         The fair value of  securities  owned is  estimated  based on bid prices
         published in  financial  newspapers  or bid  quotations  received  from
         securities dealers. The carrying values of marketable securities are

                                      A-16

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(5)      Fair Value of Financial Instruments, continued

         adjusted to market since such  securities are in the available for sale
         category. Trading account securities are carried at market value.

         Management Fees and Other Receivables
         -------------------------------------
         The fair value of these receivables approximates the carrying value due
         to their short-term nature and historical collectibility.

         Notes Receivable
         ----------------
         The fair value of notes has been determined using discounted cash flows
         based on management's  estimate of current  interest rates for notes of
         similar credit quality.

         Receivable from Clearing Broker
         -------------------------------
         The carrying  amounts  approximate  fair value because the funds can be
         withdrawn on demand and there is no unanticipated credit concern.

         Debt
         ----
         The fair market value of debt  approximates  carrying value since it is
         primarily floating rate debt based on current market rates.

         Accounts Payable
         ----------------
         The fair value of the payable  approximates  carrying  value due to the
         short-term nature of the obligation.

         Limitations
         -----------
         Fair value  estimates  are made at a specific  point in time,  based on
         relevant  market   information  and  information  about  the  financial
         instrument.  Fair  value  estimates  are based on  existing  on-and-off
         balance sheet financial  instruments without attempting to estimate the
         value of  anticipated  future  business  and the  value of  assets  and
         liabilities  that  are  not  considered  financial  instruments.  Other
         significant  assets and liabilities  that are not considered  financial
         assets or  liabilities  include the deferred  tax assets,  property and
         equipment,  investment in Prime Medical, other assets, accrued expenses
         and income tax payable. In addition,  the tax ramifications  related to
         the  realization  of  the  unrealized  gains  and  losses  can  have  a
         significant effect on fair value estimates and have not been considered
         in the aforementioned estimates.


                                      A-17

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(6)      Property and Equipment

         Property and equipment consists of the following:
                                                         December 31,
                                                     1996              1995

         Office condominium                    $1,870,000         1,896,000
         Furniture and equipment                2,386,000         3,422,000
                                                ---------         ---------
                                                4,256,000         5,318,000
         Accumulated depreciation and
           amortization                         2,475,000         3,189,000
                                                ---------         ---------
                                               $1,781,000         2,129,000

         The Company owns  approximately  53,000 square feet in the  condominium
         building in which its principal offices are located.  The Company,  its
         subsidiaries and affiliates occupy approximately 30,000 square feet and
         the remainder is leased to third parties.  Rental income  received from
         third parties during the years ended  December 31, 1996,  1995 and 1994
         totaled approximately  $417,000,  $382,000 and $308,000,  respectively.
         Future  minimum  lease  payments to be received  under the terms of the
         office  condominium  leases are as  follows:  1997 -  $351,000;  1998 -
         $326,000; 1999 - $59,000 and none thereafter.

         Included in furniture  and equipment at December 31, 1995 are computers
         and  equipment   under  capital   lease  of   approximately   $191,000.
         Accumulated  amortization  on this  equipment  under  capital lease was
         $139,000 at December 31, 1995.

(7)      Accrued Expenses and Other Liabilities

         Accrued expenses and other liabilities consists of the following:
                                                         1996              1995

         Taxes payable - other                      $  74,000           150,000
         Commissions payable                           18,000            38,000
         Deferred income                              339,000           434,000
         Health insurance and other claims
           payable                                     87,000            73,000
         Contractual/legal claims                   1,352,000         2,360,000
         Vacation payable                              77,000           127,000
         Funds held for others                         63,000            51,000
         Interest payable                                  --             5,000
         Other                                        134,000           263,000
                                                    ---------         ---------
                                                   $2,144,000         3,501,000
                                                    =========         =========

                                      A-18

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(8)      Long-term Obligations

         Long-term obligations consist of the following:
                                                           1996            1995
                                                         ------          ------
         Capital leases                                      --         180,000
           Less amounts representing
             interest                                        --        ( 12,000)
         Present value of net
             minimum payments                                --         168,000
         Notes payable secured by office buildings      542,000         642,000
         Other                                               --          63,000
                                                        -------         -------
         Total long-term obligations                    542,000         873,000
           Less current portion                         542,000         299,000
                                                        -------         -------
         Long-term portion                             $     --         574,000
                                                        =======         =======

         Notes  payable  secured by office  buildings  were at the prime rate of
         interest and were payable  monthly,  in installments  of  approximately
         $13,000,  through  April 1997 at which time the balance of $517,000 was
         due. These notes were paid in full January, 1997.

(9)      Commitments and Contingencies

         In conjunction with the software development agreement between ISSI and
         the  Company's   affiliate,   Syntera,  the  Company  is  obligated  to
         contribute  additional  capital.  At December 31, 1996, this commitment
         amounted to  approximately  $880,000,  due in 1997, and contingent upon
         progress under the agreement proceeding as planned.

         The Company has guaranteed the future yield of a customer's  investment
         portfolio  beginning in January 1995 for up to a five and one-half year
         period.  Management  believes that the Company's  financial  statements
         adequately  provide for any loss that might occur under this agreement;
         however,  as  defined  in  AICPA  Statement  of  Position  94-6,  it is
         reasonably  possible that the  Company's  estimate of loss could change
         over the  remaining  term of the  agreement.  Management  is  unable to
         determine  the  range  of  potential  adjustment  since  it is based on
         securities markets, which are beyond its ability to control.

         Rent expense  under all operating  leases for the years ended  December
         31,  1996,   1995  and  1994  was  $51,000,   $103,000  and   $127,000,
         respectively.  Future minimum payments for leases which extend for more
         than one year are not significant at December 31, 1996.

         The Company is involved in various  claims and legal  actions that have
         arisen in the ordinary  course of business.  The Company  believes that
         the liability provision in its financial statements is sufficient

                                      A-19

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(10)     Commitments and Contingencies, continued

         to cover any  unfavorable  outcome  related to  lawsuits in which it is
         currently named. Management believes that liabilities,  if any, arising
         from these  actions will not have a significant  adverse  effect on the
         financial  condition  of the  Company.  However,  due to the  uncertain
         nature of legal  proceedings,  the actual outcome of these lawsuits may
         differ from the liability provision recorded in the Company's financial
         statements.

(10)     Income Taxes

         Income tax expense consists of the following:
                                                     Year Ended
                                                     December 31,
                                         1996             1995              1994
                                        -----            -----             -----
         Federal
              Current              $   47,000          795,000           109,000
              Deferred                925,000           27,000           480,000
         State - current               73,000          105,000           123,000
                                      -------          -------           -------
                                   $1,045,000          927,000           712,000
                                    =========          =======           =======
                                    
         A reconciliation  of expected income tax expense  (computed by applying
         the United States  statutory  income tax rate of 34% to earnings before
         income  taxes)  to  total  income  tax  expense  in  the   accompanying
         consolidated statements of earnings follows:

                                                       Year Ended
                                                       December 31,
                                           1996            1995            1994
                                          -----           -----           -----
         Expected federal income        
           tax expense                $ 972,000       1,003,000         668,000
         State taxes                     73,000         105,000         123,000
         Other, net                          --       ( 181,000)       ( 79,000)
                                      ---------       ---------         --------
                                     $1,045,000         927,000         712,000
                                      =========         =======         =======

         Deferred tax assets are primarily  the result of temporary  differences
         related to  accounting  for reserves for losses,  amounts  expensed for
         financial  purposes  not  deductible  for tax  purposes,  fixed  assets
         (primarily  differences  in methods of  depreciation)  and  investments
         (primarily related to valuation allowances) for tax and book purposes.



                                      A-20

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(10)     Income Tax, continued

         The tax effect of temporary  differences that gives rise to significant
         portions  of  deferred  tax  assets and  deferred  tax  liabilities  at
         December 31, 1996 and 1995 are presented below:

                                                            1996           1995
         Deferred tax assets:                              -----          -----
         Marketable securities write downs not taken
           for tax purposes                           $   13,000         46,000
         Accrued expenses                                676,000        993,000
         Accounts receivable, principally due
           to allowance for doubtful accounts             60,000         77,000
         Deferred income for books not for tax            30,000        129,000
         Other                                            19,000          7,000
                                                         -------       --------
         Total gross deferred tax assets                 798,000      1,252,000

         Deferred tax liabilities:
         Investment in Prime Medical Services, Inc.
           due to use of equity method for books      (1,512,000)    (1,033,000)
         Capitalized expenses, principally due to
           deductibility for tax purposes             (   52,000)    (   60,000)
                                                      ----------      ---------
              Total gross deferred tax liabilities    (1,564,000)    (1,093,000)
                                                      ----------      --------- 
         Net deferred tax asset (liability)           ($ 766,000)       159,000
                                                      ==========        =======

         The Company has not recorded a valuation allowance against the deferred
         tax asset as  management  believes  it is more likely than not that the
         Company  will  fully  realize  the  asset  in the  form of  future  tax
         deductions  since the  temporary  differences  will reverse in the near
         future.  These  deductions  would be  available  to  carryback to prior
         years, if necessary.

(11)     Employee Benefit Plans

         The Company has an  employee  benefit  plan  qualifying  under  Section
         401(k)  of the  Internal  Revenue  Code  for  all  eligible  employees.
         Employees   become  eligible  upon  meeting  certain  service  and  age
         requirements.  Employees  may defer up to 15% (not to exceed  $9,500 in
         1996) of their annual  compensation under the plan. The Company, at its
         discretion,  may  contribute  up to  200%  of the  employees'  deferred
         amount.  For  the  years  ended  December  31,  1996,  1995  and  1994,
         contributions  by  the  Company  aggregated  $104,000,   $100,000,  and
         $105,000, respectively.





                                      A-21

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(12)     Stock Options

         The  Company  has  adopted,  with  shareholder   approval,   the  "1995
         Non-Employee  Directors Stock Option Plan"  ("Directors  Plan") and the
         "1995  Incentive  and  Non-Qualified  Stock  Option  Plan"  ("Incentive
         Plan").  The Directors  Plan provides for the issuance of up to 200,000
         shares  of  common  stock to  non-employee  directors  who serve on the
         Compensation Committee. The Incentive Plan provides for the issuance of
         up to 800,000  shares of common stock to directors  and key  employees.
         Options issued to employees are to be qualified incentive stock options
         and those to directors non-qualified options.

         The exercise price for each non-qualified option share is determined by
         the Compensation Committee of the Board of Directors ("the Committee").
         The exercise price of a qualified  incentive  stock option had to be at
         least 100% of the fair market value of such shares on the date of grant
         of the option.  Under the Plans, option grants are limited to a maximum
         of ten year terms,  however,  the  Committee  has issued all  currently
         outstanding  grants with five year terms. The Committee also determines
         vesting for each option grant and all outstanding options vest in three
         equal annual installments beginning one year from the date of grant.

         The Company has adopted the disclosure-only  provisions of Statement of
         Financial  Accounting  Standards No. 123,  Accounting  for  Stock-Based
         Compensation ("Statement 123"), but applies Accounting Principles Board
         Opinion No. 25, Accounting for Stock Issued to Employees, in accounting
         for its  stock  option  plans.  No cost from  stock-based  compensation
         awards was  recognized  in 1996 or 1995.  If the Company had elected to
         recognize  compensation cost of options granted based on the fair value
         at the grant  dates,  consistent  with  Statement  123,  net income and
         earnings  per  share  would  have  changed  to the  pro  forma  amounts
         indicated below:

                                                        Year Ended December 31,
                                                         1996              1995
                                                        -----             -----
            Pro forma net income                   $1,594,000         1,975,000
                              
            Pro forma earnings per share - primary      $0.37              0.51
                             - fully diluted            $0.37              0.47

         The fair value of the options used to compute the pro forma  amounts is
         estimated  using the  Black-  Scholes  option  pricing  model  with the
         following assumptions:
                                                      1996              1995
                                                      ----              ----
             Risk-free interest rate                  6.06%           6.41%
             Expected holding period                  3.75 years      3.75 years
             Expected volatility                       .692            .590
             Expected dividend yield                   -0-              -0-

                                      A-22

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(12)     Stock Options, continued

         Statement  123  calls for a  prospective  application  of  compensation
         relating  to the grant of stock  options  and,  consequently  pro-forma
         financial information may not be indicative of future amounts until the
         new rules are applied to all outstanding nonvested awards.

         Presented below is a summary of the stock options held by the Company's
         employees  and  directors  and the related  transactions  for the years
         ended December 31, 1996 and 1995.  Remaining  options  outstanding from
         the Company's previous 1983 plans are included.
<TABLE>
<CAPTION>

                                                                   Year ended December 31
                                                      1996                                       1995
                                               -----------------------                 --------------------------    
                                                              Weighted                                    Weighted
                                                              Average                                     Average
                                                              Exercise                                    Exercise
                                            Shares            Price                     Shares            Price
                                            -------           -------                   -------           -------
         <S>                                <C>              <C>                        <C>               <C>                 
         Balance at January 1               837,000           $2.18                     921,000           $1.57
         Options granted                    295,000            9.32                     235,000            3.82
         Options exercised                  450,000            1.53                     314,000            1.59
         Options forfeited/expired           31,000            6.16                       5,000            2.45
                                            -------            ----                     -------            ----           
         Balance at December 31             651,000            5.64                     837,000            2.18
                                            =======            ====                     =======            ====    
         Options exercisable                258,000           $2.22                     550,000           $1.48
                                            =======            ====                     =======            ====
</TABLE>

         The weighted  average fair value of Company stock  options,  calculated
         using the Black Scholes option pricing model,  granted during the years
         ended  December  31,  1996 and  1995 is $5.15  and  $1.75  per  option,
         respectively.

         The following table  summarizes the Company's  options  outstanding and
         exercisable options at December 31, 1996:
<TABLE>
<CAPTION>
                                                   Stock Options                                     Stock Options
                                                   Outstanding                                        Exercisable
                                            -------------------------------------------           -------------------------
                                                              Average           Weighted                           Weighted
                                                              Remaining         Average                            Average
         Range of                                             Contractual       Exercise                           Exercise
         Exercise Prices                    Shares            Life              Price             Shares           Price
                                            -------           ---------         -----             -------         --------
         <S>                                <C>               <C>               <C>               <C>             <C>               
         $1.38 to $3.50                     336,000           2.4 years         2.46              251,000         2.28
         $3.51 to $7.00                      50,000           3.7 years         5.70                7,000         4.69
         $7.01 to $10.50                    265,000           4.5 years         9.67                   --           --
                                            -------           ---------         ----              -------         ----
         Total                              651,000                                               258,000
                                            =======                                               =======
</TABLE>

                                      A-23

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(13)     Discontinued Operations

         On October 23, 1995 the Company sold substantially all of the assets of
         APS Communications Corporation, a publisher of Spanish language 
         directories of U. S. businesses.  The Company received cash, a note 
         (see note 4) and had certain liabilities assumed by the purchaser. The
         gain on the sale, to be recognized on the installment basis as note 
         payments are received, will not be material to the Company's opera-
         tions.  No gain has been recognized through 1996.  Historical results 
         from the operation are presented in the Consolidated Statements of 
         Earnings as "Loss from discontinued operations".

(14)     Investment in Affiliates

         On October 12, 1989, the Company  purchased for cash  3,540,000  shares
         (42%) of the common stock of Prime  Medical.  Members of the  Company's
         Board  currently  serve as two of the eight directors of Prime Medical.
         Prime Medical provides  non-medical  management services to lithotripsy
         centers. In conjunction with the acquisition of additional  lithotripsy
         operations in June 1992,  October 1993, and May 1996,  the  outstanding
         shares of Prime Medical  increased.  These  increases  plus the sale of
         Prime  Medical  shares owned by the Company  under an option  agreement
         reduced the Company's  ownership to 16% of the outstanding common stock
         of  Prime  Medical.  The  Company's  investment  in  Prime  Medical  is
         accounted  for on the  equity  method.  The  3,064,000  shares of Prime
         Medical  common  stock  held  by the  Company  had a  market  value  of
         $33,326,000  (carrying amount of $8,905,000) at December 31, 1996 based
         on the market closing price of $10.875 per share.

         At December 31, 1996 and 1995, the Company's retained earnings included
         undistributed  earnings, net of deferred tax, of Prime Medical totaling
         $2,821,000 and $1,890,000, respectively.

         The  condensed  balance  sheet and  statement of  operations  for Prime
         Medical follow:

            Condensed balance sheet at December 31, 1996 and 1995
                                                      1996              1995
                                                      ----              ----
            Current assets                      $ 40,073,000        10,938,000
            Long-term assets                     157,680,000        66,627,000
                                                 -----------        ----------
               Total assets                      197,753,000        77,565,000
                                                 ===========        ==========
            
            Current liabilities                   31,555,000        11,055,000
            Long-term liabilities                 89,771,000        23,760,000
            Shareholders' equity                  76,427,000        42,750,000
                                                 -----------        ----------
               Total liabilities and equity     $197,753,000        77,565,000
                                                 ===========        ==========


                                      A-24

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(14)     Investment in Affiliates, continued

              Condensed statement of operations for the years ended
              December 31, 1996 and 1995
                                                       1996              1995
                                                      -----             -----
              Total revenue                    $ 72,404,000        23,195,000
                                                 ==========        ==========
              Net income                       $  8,961,000         7,204,000
                                                 ==========        ==========

         The Company  exchanged  575,000 shares of Prime stock for notes payable
         from Prime amounting to $593,750,  one half in April 1993 and the other
         half in July 1995. The gain  resulting from the difference  between the
         market value of the Prime stock and the Company's carrying basis of the
         stock was not significant. The Company subsequently exchanged the notes
         for 87,000  shares in 1995 and 90,000  shares in 1993 of its own common
         stock (at current  market  value at  exchange  date) which was owned by
         Prime.

         On July 1,  1996,  the  Company  entered  into a  software  development
         agreement with International Software Solutions,  Inc. ("ISSI").  Under
         this agreement,  ISSI received newly issued shares of APS Systems, Inc.
         common  stock,  which  diluted the ownership of the Company to 49%. APS
         Systems  subsequently  changed its name to Syntera  Technologies,  Inc.
         ("Syntera").  Members of Company  management  serve as two of Syntera's
         four board members.  Syntera is currently working to replace or upgrade
         its product  line,  but will  continue to focus on  providing  practice
         management  computer  systems to medical  clinics,  medical schools and
         physician hospital  organizations  (PHOs).  Beginning July 1, 1996, the
         Company  applied the equity method of accounting to its 49% interest in
         Syntera.
         Operations of Syntera had been consolidated prior to that.

         The condensed  balance  sheet and  statement of operations  for Syntera
         follows:

         Condensed balance sheet at December 31, 1996

         Current assets                                               $1,692,000
         Long-term assets                                                262,000
                                                                       ---------
              Total assets                                            $1,954,000
                                                                       =========

         Current liabilities                                             358,000
         Long-term assets                                                     --
         Shareholders' equity                                          1,596,000
                                                                       ---------
              Total liabilities and equity                            $1,954,000
                                                                       =========



                                      A-25

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(14)     Investment in Affiliates, continued

         Condensed statement of operations for the six months ended December 31,
         1996

         Total revenue                                                $1,421,000
                                                                       =========
         Net Loss                                                     $  155,000
                                                                         =======

(15)     Segment Information

         The Company's financial services segment includes financial  management
         for an insurance  company that provides  insurance  coverage to doctors
         and hospitals, and brokerage and investment services to individuals and
         institutions.

         The computer systems/software segment consists of computer hardware and
         software marketed to university medical schools and to clinics.

         Real Estate income is derived from the leasing of office space.

                                            1996           1995           1994
         Operating Revenues:
          Financial services           $ 8,863,000     13,762,000    11,451,000
          Computer systems/software      1,590,000      4,738,000     5,404,000
          Real estate                      717,000        668,000       586,000
                                        ----------     ----------    ----------
                                       $11,170,000     19,168,000    17,441,000
                                        ==========     ==========    ==========

         Operating Profit (Loss):
          Financial services          $ 1,123,000      2,118,000        731,000
          Computer Systems/Software       (37,000)       476,000        434,000
          Real estate                     147,000         96,000         77,000
                                        ----------     ----------     ---------
                                        1,233,000      2,690,000      1,242,000
                                        ----------     ----------     ---------
         Corporate investment and 
          other income                    476,000      1,322,000        296,000
         Corporate expenses              (150,000)    (2,037,000)     ( 255,000)
         Minority interest                     --             --      (  15,000)

         Equity in earnings of 
          Affiliates                    1,410,000      1,508,000        950,000
                                        ---------      ---------       --------

         Earnings from continuing 
           operations before income 
           taxes                        2,969,000      3,483,000      2,218,000

         Income tax expense             1,045,000      1,108,000        798,000
                                        ---------      ---------      ---------

                                      A-26

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(15)     Segment Information, continued

                                              1996            1995         1994
                                             -----           -----        -----
         Earnings from continuing 
          operations                      1,924,000      2,375,000    1,420,000

         Loss from discontinued 
          operations, net of income 
          tax benefit                            --       (351,000)    (166,000)
                                          ---------      ---------    ---------
         Net earnings                   $ 1,924,000      2,024,000    1,254,000
                                          =========      =========    =========

         Identifiable assets:
          Financial services            $11,667,000     11,816,000   10,161,000
          Computer systems/software              --      1,732,000    1,426,000
          Real estate                     1,476,000      1,578,000    1,640,000
          Corporate                      10,788,000      8,614,000    6,094,000
          Discontinued Operations                --             --      597,000
                                         ----------     ----------   ----------
                                        $23,931,000     23,740,000   19,918,000
                                         ==========     ==========   ==========

         Capital expenditures:
          Financial service             $    88,000        262,000       31,000
          Computer systems/software          18,000         80,000       48,000
          Real estate                        21,000         64,000       86,000
          Corporate                          17,000         73,000       12,000
          Discontinued operations                --          4,000        8,000
                                            -------        -------      -------
                                        $   144,000        483,000      185,000
                                            =======        =======      =======

         Depreciation/amortization 
         expenses:
          Financial services            $   164,000        164,000      106,000
          Computer systems/software          24,000         94,000       48,000
          Real estate                       129,000        126,000      113,000
          Corporate                          13,000          9,000        2,000
          Discontinued operations                --          6,000        8,000
                                            -------        -------      -------
                                        $   330,000        399,000      277,000
                                            =======        =======      =======

         Revenues  attributable to customers  generating greater than 10% of the
          revenues of each segment:
            Financial services
             Company A                          60%            36%           45%
             Company B                          --             10%           --

                                      A-27

<PAGE>


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
              Notes to Consolidated Financial Statements, Continued

(15)     Segment Information, continued
                                              1996           1995          1994
                                             -----          -----         -----

              Company C                         --             --            12%
              Company D                         --             11%           --
                                              ----           ----          ----
                                                60%            57%           57%
                                              ====           ====          ====
             Computer systems/software
               Company E                        56%            34%           28%
               Company F                        --             13%           11%
               Company G                        --             18%           29%
                                              ----           ----          ----
                                                56%            65%           68%
                                              ====           ====          ====

         At December 31, 1996 the Company had long-term contracts with company A
         and was  therefore  not  vulnerable  to the risk of a near-term  severe
         impact from a  reasonably  possible  loss of the  revenue.  Company E's
         contract  will  expire  in 1998 and will not be  renewed.  The  Company
         expects,  but cannot be  certain,  that its  affiliate  will be able to
         replace  this  revenue  under  its  redevelopment  plan  (see  "General
         Information").

         Operating profit is operating revenues less related expenses and is all
         derived from domestic operations.  Identifiable assets are those assets
         that  are  used in the  operations  of  each  business  segment  (after
         elimination of investments in other segments). Corporate assets consist
         primarily of cash and cash investments, marketable securities and notes
         receivable.


                                      A-28

                                                                 Exhibit 10.17

                            STOCK PURCHASE AGREEMENT

     This  Agreement  is made and  entered  into on this 30th day of  September,
1996,  by  and  between  American   Physicians  Service  Group,  Inc.,  a  Texas
corporation (the "Buyer"),  and Exsorbet Industries,  Inc., an Idaho corporation
(the "Seller").

     In  consideration  of the premises and the mutual promises herein made, and
in  consideration  of the  representations,  warranties,  and  covenants  herein
contained, the Parties agree as follows:

1. Definition~

     "Exsorbet"  and "Exsorbet  Industries.  Inc." refer to that certain  entity
which is  incorporated  under  the laws of the  State  of Idaho  under  the name
"Exsorbet Industries, Inc." as well as any successor corporation.

     "Shareholder Rights Agreement" means an Agreement by and between American 
Physicians Service Group, Inc. and Exsorbet Industries, Inc. dated September 30,
1996 and entitled "Shareholder Rights-Agreement..

     "Stock Put Agreement" means an Agreement by and between American Physicians
Service Group, Inc. and Exsorbet Industries, Inc. dated September 30, 1996, and
entitled "Stock Put Agreement."

2. Purchase and Sale of 1,200,000 Shares of Common Stock.

     (a) Basic  Transaction.  On and subject to the terms and conditions of this
Agreement,  and  further subject  to the terms of the Stock  Put  Agreement  and
Shareholder  Rights Agreement,  Buyer agrees to, and does hereby,  purchase from
Seller One Million Two Hundred Thousand  (1,200,000)  shares of common (capital)
stock of Exsorbet Industries,  Inc. at the price of Two Dollars and Seventy-Five
Cents (S2.75) per share.

     (b) Delivery of Share Certificate. Buyer acknowledges receipt of a 
certificate evidencing 1,200,000 shares of common stock of Exsorbet Industries,
Inc., such certificate being issued in the name of "American Physicians Service 
Group, Inc."

     (c) Payment.  Seller  acknowledges  receipt of Three  Million Three Hundred
Thousand U.S. Dollars  ($3,300,000) from Buyer as payment in full for the shares
of stock  specified  above.  Such sum is being  delivered by wire  transfer to a
banking account directed by Seller.

     3. Stock Registration. Unless and until registered, all of the shares of 
stock issued by Exsorbet Industries, Inc. pursuant to this Agreement may not be 
sold or transferred unless and until registered or pursuant to a valid exemption
from registration. All stock certificates issued pursuant to this Agreement 
shall bear a restrictive legend in substantially the following form:
<PAGE>

"No  sale,  offer  to  sell,  or  transfer  of the  shares  represented  by this
certificate  shall be made  unless a  registration  statement  under the Federal
Securities  Act of 1933,  as  amended,  with  respect to such  shares is then in
effect or an exemption from the registration requirements of said act is then in
fact applicable to said shares."

     4. Representations of Exsorbet. Seller represents and warrants the 
following facts to be true as of the time of execution of this Agreement:

(a) Exsorbet Industries, Inc. is a corporation duly organized and existing under
the laws of the State of Idaho, and is in good standing within the State of 
Idaho;

(b) Seller has full corporate power and authority to perform its obligations 
hereunder;

(c)  Neither  the  execution  and  the  delivery  of  this  Agreement,  nor  the
consummation of the transaction  contemplated hereby, will violate any corporate
bylaws, corporate charter, court orders, injunctions, decrees, or rulings;

(d) There is only one class of stock of  Exsorbet  Industries,  Inc.,  being the
common or capital stock of such corporation. There is only series of such stock.
There are no series or  classes  of stock  with any  preferred  or  preferential
rights;

(e) The stock of Exsorbet Industries, Inc. trades on the Nasdaq Stock Market, 
Inc. SmallCap Market under the symbol "EXSO;" and

(f) The shareholders of Exsorbet Industries, Inc. have been requested to approve
a proposed merger of such corporation into Consolidated Eco-Systems, Inc., a 
Delaware corporation. If such merger is approved, the Delaware corporation would
be the surviving corporation. Consolidated Eco-Systems,
Inc. is, or when organized will be, a wholly-owned subsidiary of Exsorbet 
Industries, Inc. In the event that the proposed merger is approved, Exsorbet 
Industries, Inc. binds and obligates itselfto insure, and warrants, that 
Consolidated Eco-Systems, Inc. would be bound by each and every term of this
Agreement.

     5. Representations and Understandings of American Physicians Service Group,
Inc.  Buyer  understands  that the  shares  of  stock  issued  pursuant  to this
Agreement  have  not  been,  and will not by the  terms  of this  Agreement  be,
registered under the Securities Act, or under any state securities laws, and are
being  offered  and sold in  reliance  upon federal  and  state  exemptions  for
transactions not involving any public offering.  The terms of this paragraph may
be modified or amended by other Agreements existing between the parties.

Buyer represents that:


                                       2
<PAGE>

(i) it is acquiring the shares of common stock of Exsorbet Industries, Inc.
solely for its own account for investment purposes, and not with a view to the 
distribution thereof;

(ii) it is a sophisticated investor with knowledge and experience in business 
and financial matters;

(iii) it has received certain  information  concerning the Buyer and has had the
opportunity to obtain additional information as desired in order to evaluate the
merits and the risks  inherent  in  holding  the stock of the  Seller,  provided
however that the terms  hereof shall be subject to a 60 day Stock Put  Agreement
during  which  time  Buyer  shall be  afforded  the  right to  conduct  full due
diligence inquiry of Seller, to the extent desired;

(iv) it is able to bear the economic risk and lack of liquidity inherent in 
holding the stock of Seller;

(v) it is an Accredited Investor, as defined by Regulation D promulgated 
pursuant to the Securities Act of 1933, as amended; and

(vi) it has full corporate  power and authority to enter into this Agreement and
to consummate the transaction contemplated hereunder.

     6. Subsidiary Disclosure. Exsorbet Industries, Inc. has provided 
information concerning its operating structure and specifically including a list
of its subsidiary corporations. Exsorbet represents and warrants that such 
information is complete and accurate. A list of subsidiary corporations
is attached hereto, marked as Exhibit "A" and incorporated herein by reference.

     7. No Third Party beneficiaries. This Agreement shall not confer any rights
or remedies upon any person or entity other than the parties hereto and their 
respective successors and permitted assigns.

     8. Succession and Assigment. This Agreement shall be binding upon and inure
to the benefit of the parties named herein and their  respective  successors and
permitted  assigns.  No party may assign either this  Agreement or any of his or
its rights,  interests,  or  obligations  hereunder  without  the prior  written
approval of the Buyer and the Sellers; provided.  however, that Buyer may assign
this Agreement and its rights hereunder to any subsidiary or affiliate of Buyer,
and Buyer may transfer or convey its rights in any shares of stock of the Seller
and the  Seller  may  merge  with that  certain  Delaware  corporation  known as
Consolidated  Eco-Systems,  Inc.,  provided that such  corporation  agrees to be
completely bound by all terms of all contracts in existence between the parties.

    9. Counterparts. This Agreement may be executed in one or more counterparts,
 each of


                                        3
<PAGE>

which shall be deemed an original but all of which together will  constitute one
and the same instrument.

     10. Headings. The section headings contained in this Agreement are inserted
for  convenience   only  and  shall  not  affect  in  any  way  the  meaning  or
interpretation of this Agreement.

     11.  Notices.   All  notices,   requests,   demands,   claims,   and  other
communications hereunder will be in writing. Any notice, request, demand, claim,
or other  communication  hereunder shall be deemed duly given if (and then three
business days after) it is sent by registered or certified  mail,  retum receipt
requested, postage prepaid, and addressed to the intended recipient as set forth
below:

 If to the Seller:   Copy to: Charles E. Chunn, Ir., 1401 South Waldron Road,
                                   Suite 201, Fort Smith, AR 72903.

 If to the Buyer:    Copy to: Duane K. Boyd, Jr., 1301 Capital of Texas Highway,
                                   Suite C300, Austin, TX  78746-6550.         
                  
 

Any Party may send any notice,  request,  demand,  claim, or other communication
hereunder  to the  intended  recipient  at the address set forth above using any
other means (including personal delivery,  expedited courier, messenger service,
telecopy,  telex,  ordinary  mail,  or  electronic  mail),  but no such  notice,
request,  demand, claim, or otha communication shall be deemed to have been duly
given  unless and until it actually is received by the intended  recipient.  Any
Party may change the address to which notices,  requests,  demands,  claims, and
other  communications  hereunder are to be delivered by giving the other Parties
notice in the manner herein set forth.

     12.  Governing Law. This Agreement shall be  governed  by and  construed in
accordance with the domestic laws of the State of Texas without giving effect to
any choice or conflict of law provision or rule that would cause the application
of the laws of any jurisdiction other than the State of Texas.

     13. Amendments and Waivers.  No amendment of any provision ofthis Agreement
shall be valid  unless the same shall be in writing  and signed by the Buyer and
the Seller. No waiver by any Party of any default, misrepresentation,  or breach
of warranty or covenant  hereunder,  whether intentional or not, shall be deemed
to extend to any prior or subsequent  default,  misrepresentation,  or breach of
warranty or covenant hereunder or affect in any way any rights arising by virtue
of any prior or subsequent such occurrence.

             14. Severability. Any term or provision of this Agreement that is 
invalid or unenforceable

                                        4

<PAGE>

in  any situation  in  any  jurisdiction   shall  not  affect  the  validity  or
enforceability  of the remaining  terms and provisions  hereofor the validity or
enforceability  of the offending term or provision in any other  situation or in
any other jurisdiction.

                              EXSORBET INDUSTRIES, INC., 
                              an Idaho corporation "SELLER"


                              By: 
                              Title


                              AMERICAN PHYSICIAN SERVICE GROUP, INC.

                              a Texas corporation
                              "BUYER"

                              By: 

                              Title:



                                       5
<PAGE>

                                   EXHIBIT "A"
                             EXSORBET INDUSTRIES, INC.
                          REVENUE GENERATING SUBSIDIARY
                                  CORPORATIONS

Consolidated Environmental Services, Inc., an Arkansas corporation;

Cierra, Inc., an Arkansas corporation.;
Larco Environmental Services, Inc., a Louisiana corporation.;

KR Industrial Service of Alabama, Inc., an Alabama corporation at present;

Exsorbet Technical Services, Inc., an Arkansas corporation, dlb/a SpilTech 
Services, Inc.; and

Eco-Acquisition,  Inc., an Arkansas  corporation  (this company will be changing
its name to Eco-Systems, Inc.).

                    This   list   does  not   include   non-revenue   generating
subsidiaries of Exsorbet Industries, Inc.

                                        6

                                                             
                                                                 Exhibit 10.18
               

                               STOCK PUT AGREEMENT


         THIS STOCK PUT AGREEMENT (this  "Agreement") is made as of the 30th day
of September,  1996 (the "Effective Date"), by and between Exsorbet  Industries,
Inc., an Idaho corporation  ("Exsorbet") and American  Physicians Service Group,
Inc., a Texas corporation ("APS").

                                    RECITALS:

         WHEREAS, APS has purchased 1,200,000 shares of the common stock of 
          Exsorbet; and

         WHEREAS,  Exsorbet  desires  to allow  APS to cause  Exsorbet,  at APS'
option for a period of sixty (60) days,  to purchase  APS'  holdings of Exsorbet
stock;

         NOW,  THEREFORE,  in  consideration  of the  foregoing  and the  mutual
covenants and agreements contained herein, the parties hereto agree as follows:

         1.  Shares  Subject  to this  Agreement.  The  shares  subject  to this
Agreement are up to 1,200,000 shares of the outstanding common stock of Exsorbet
held by APS, including any increases,  decreases or substitutions therefor which
occur after the date hereof as a result of any change (through recapitalization,
merger, consolidation, stock dividend, stock split, combination,

                                        1

<PAGE>



reverse  stock split or exchange of shares or  otherwise)  in the  character  or
amount of such shares prior to the exercise by APS of its rights hereunder.

         2. Option to Sell. Exsorbet  irrevocably and unconditionally  grants to
APS the right,  privilege  and option to sell to Exsorbet  and  Exsorbet  hereby
irrevocably and  unconditionally  agrees to purchase,  the Shares, for the price
and on the terms provided herein.  This option can be exercised by APS notifying
Exsorbet in writing of the intent to exercise the option, in which case Exsorbet
will have ten (10) days to complete  the  purchase as  required  herein.  In the
event  the  parties  cannot  agree  on a time and  place  for a  closing  of the
purchase, the closing will occur at the offices of APS in Austin, Texas, at 1:00
p.m.  Austin  time on the tenth day after APS has given  notice of  exercise  to
Exsorbet.

         3. Purchase  Price and Payment.  The total purchase price to be paid by
Exsorbet for all the Shares is $3,300,000,  or $2.75 per share for purchase of a
portion of the Shares. The total purchase price shall be paid at closing in cash
or certified funds or by execution and delivery by Exsorbet of a promissory note
(the "Note") payable to the order of APS in the original principal amount of the
purchase price in the form of Exhibit-A  hereto. In the event Exsorbet elects to
pay for the Shares by execution and delivery of the Note,  APS shall be entitled
to retain a  first-lien,  perfected  security  interest in and to the Shares (in
addition  to  whatever  other  collateral  may  be  used  to  secure  Exsorbet's
obligations  hereunder  as  contemplated  in  Section 5 below)  and APS shall be
entitled  to retain  possession  of the  certificates  evidencing  the Shares to
perfect such security interest.  In the event the purchase price is paid in cash
or certified funds, or upon payment in full of the Note and

                                        2

<PAGE>



all  interest  due  thereon,  APS shall  deliver to  Exsorbet  all  certificates
representing the Shares sold, duly endorsed to Exsorbet.

         4. Assignment.  This option and the rights granted under this Agreement
may be transferred or assigned by APS to any affiliate or subsidiary of APS. 
Otherwise, the rights and obligations of the parties under this Agreement may
not be assigned or transferred without the express prior written consent of the 
other party.

         5. Obligations of Exsorbet  Secured.  The obligations of Exsorbet under
and pursuant to this Agreement  shall be secured by that certain  Assignment and
Security  Agreement of even date herewith  pursuant to which  Exsorbet  grants a
security interest in certain collateral to APS to secure Exsorbet's  obligations
under this  Agreement.  In  addition,  the  obligations  of  Exsorbet  under and
pursuant to this Agreement are further guaranteed by the payment and performance
guarantees of each of Exsorbet's subsidiaries.

         6. Insufficient  Surplus. In connection with the purchase of any Shares
by Exsorbet  pursuant to this Agreement,  if the surplus of Exsorbet shall prove
to be  insufficient  under then existing laws to allow  Exsorbet to purchase all
the Shares which APS then elects to sell to  Exsorbet,  Exsorbet  shall,  within
sixty (60) days of receipt of APS's written  notice of intent to exercise  their
option to sell Shares hereunder, take such action, execute such instruments, and
otherwise  do whatever  may be  necessary  to increase  its surplus to an amount
sufficient to authorize  the purchase of such Shares,  including but not limited
to, one or more of the following:

                                        3

<PAGE>



                  (a)      a recapitalization of Exsorbet so as to reduce its 
                           capital and increase its surplus;
                  (b)      a  reappraisal  of the assets of  Exsorbet  including
                           goodwill, if any, to reflect the market value of such
                           assets on the  books of  Exsorbet  in the event  such
                           value  exceeds  the  book  value  thereof,  so  as to
                           increase such surplus; or
                  (c)      any and all other means or procedures as permitted by
                           law.

         7.       Notices.  All notices required to be given hereunder shall be 
                         deemed to be duly given by personally delivering such 
                         notice or by mailing it certified mail to all parties 
                         hereto at the following address:

         Exsorbet:        Exsorbet Industries, Inc.
                          1401 South Waldron, Suite 201
                          Fort Smith, Arkansas 72903
                          Attn: Charles E. Chunn, Jr.

         APS:                       American Physicians Service Group, Inc.
                                    1301 Capital of Texas Highway, Suite C-300
                                    Austin, Texas 78746-6550
                                    Attn: President

         The foregoing  addresses may be changed by providing  written notice of
such change of address by certified mail to the other parties to this Agreement.

         8.       Exercise of Option.  This option shall be exercisable at any 
                   time or times until sixty (60) days after the Effective Date.
                   Upon expiration of this time period, if APS has not exercised

                                        4

<PAGE>



its rights hereunder,  Exsorbet shall pay APS $60,000 within five (5) days after
the expiration of such sixty (60) day period.

         9.       Binding Effect.  This Agreement shall inure to the benefit of 
and be binding upon the parties hereto, and their respective successors and 
permitted assigns. Exsorbet may not assign this Agreement or any of its rights 
or obligations hereunder without the prior express written consent of APS.

         10.      Governing Law.  This Agreement shall be interpreted under the 
laws of the State of Texas, and all obligations created hereunder are 
performable in Travis County, Texas.

         11.      Further Assurances.  All parties hereto agree to perform any 
further acts and to execute and deliver any further documents which may be 
reasonably necessary or convenient to carry out the provisions of this 
Agreement.


                                        5

<PAGE>


         IN WITNESS WHEREOF,  the parties hereto have executed this agreement in
multiple counterparts in Austin, Texas on the day and year first above written.

         EXSORBET:                        EXSORBET INDUSTRIES, INC.



                                          By:

                                          Printed Name:

                                          Title:


         APS:                             AMERICAN PHYSICIANS SERVICE
                                             GROUP, INC.



                                           By:

                                           Printed Name:

                                           Title:



                                        6


                                                                 Exhibit 10.19
                                                                 
                          SHAREHOLDER RIGHTS AGREEMENT


         This Shareholder  Agreement (this "Agreement") is made and entered into
the 30th day of September,  1996 (the "Effective Date"), by and between Exsorbet
Industries,  Inc., an Idaho  corporation  ("Exsorbet")  and American  Physicians
Service Group, Inc., a Texas corporation ("APS").

                                 R E C I T A L S

         WHEREAS,  APS has purchased  1,200,000  shares of Exsorbet common stock
and has entered into a Stock Put Agreement  (the "Stock Put")  pursuant to which
APS may cause Exsorbet to repurchase such common stock; and

         WHEREAS,  the  obligations  of  Exsorbet  under  the  Stock Put will be
secured  by a first  lien  security  interest  in all the  capital  stock of the
Exsorbet  subsidiary which acquires 7-7, Inc., an Ohio  corporation,  by merger,
and will be further  secured by the payment and  performance  guarantees  of all
subsidiaries  of  Exsorbet  (all such  guarantees,  together  with the  security
agreement  and  other  documents  entered  into  from time to time by or for the
benefit of APS in connection with securing the obligations of Exsorbet under the
Stock Put are hereinafter collectively referred to as the "Security Documents");
and


                                        1

<PAGE>



         WHEREAS,  APS has received a warrant (the "Warrant") to acquire 300,000
shares of the common  stock of Exsorbet  and has further  received  options (the
"Options")  from  certain  stockholders  of  Exsorbet  pursuant  to which APS is
entitled to purchase,  in the aggregate,  an additional  1,700,000 shares of the
common stock of Exsorbet; and

         WHEREAS, the parties hereto desire for APS to have certain registration
rights with regard to the 1,200,000 shares of common stock of Exsorbet purchased
by APS,  and such  additional  Exsorbet  common  stock as may be acquired by APS
pursuant  to the  exercise of the Warrant  and/or the  Options,  and to agree on
certain other matters  concerning the governance of their affairs,  on the terms
and conditions contained herein.

         NOW,  THEREFORE,  for and in  consideration  of the foregoing and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

1.       Registration Rights.
                  (a) APS shall have the  registration  rights set forth  herein
with respect to (i) the 1,200,000  shares of Exsorbet  common stock purchased by
APS in  connection  with which this  Agreement  was entered  into,  and (ii) any
shares of the common  stock of  Exsorbet  which APS  acquires  upon  exercise of
rights granted pursuant to the Warrant, the Options or this Agreement, and (iii)
all stock  (and  rights  related  thereto)  received  with  respect to any stock
described  in (i) and/or (ii) by virtue of any stock  dividends,  stock  splits,
mergers, consolidations, reclassifications or similar

                                        2

<PAGE>



transactions or occurrences. The stock of Exsorbet owned by APS which is subject
to the registration rights provided in this Agreement is hereinafter referred to
as the  "Registerable  Stock." To exercise  its  registration  rights,  APS must
deliver to Exsorbet a written request (the  "Request")  requesting that Exsorbet
effect the  registration  under the  Securities  Act of 1933,  as  amended  (the
"Securities Act"), and the registration  and/or  qualification  under applicable
state  securities  laws (the "State Laws") of all or a specified  portion of the
Registerable Stock, and specifying the intended method of methods of disposition
thereof,  the jurisdictions in which such offering will be made and whether such
requested registration is to be an underwritten offering.
                  (b)  Exsorbet   will  use  its  best  efforts  to  effect  the
registration under the Securities Act and the registration and/or  qualification
under the State Laws of the Registerable Stock, to the extent required to permit
the disposition  thereof in accordance with the methods and in the jurisdictions
set  forth  in  the  Request;   provided  that  Exsorbet  may  include  in  such
registration statement securities of Exsorbet ("Other Registerable  Securities")
to be offered and sold by or on behalf of Exsorbet or any other security  holder
of  Exsorbet  who  possesses  a right to have such  securities  included in such
registration  statement and who timely  exercises such right in connection  with
the  registration  hereunder;  provided  that whenever  Exsorbet  shall effect a
registration  pursuant to this  Agreement  in  connection  with an  underwritten
offering,  if (A) any underwriter  representing APS in such offering advises APS
in writing that, in its opinion, the inclusion of Other Registerable  Securities
would  adversely  affect such  offering and (B) APS shall not have  consented in
writing  to the  inclusion  of  such  Other  Registerable  Securities,  then  no
securities  other than shares of Registerable  Stock shall be included among the
securities  covered by such registration.  A registration  requested pursuant to
this Agreement shall be deemed to have been effected (i) if and

                                        3

<PAGE>



when a registration  statement filed with the Securities and Exchange Commission
(the  "Commission")  relating  to  the  Registerable  Stock  has  been  declared
effective by the Commission or otherwise has become  effective and  registration
and/or  qualification  under  all  applicable  State  Laws has  been  completed;
provided that a registration  requested  pursuant to this Agreement shall not be
deemed to have been effected if after such  registration  has become  effective,
such registration statement is interfered with by any stop order,  injunction or
other order or  requirement of the  Commission or other  governmental  agency or
court due to  reasons  that are not the fault of APS and/or are not based on any
act or omission of APS, or (ii) if Exsorbet has commenced  preparation of such a
registration  statement  under the Securities Act and such  registration  and/or
qualification  under the State  Laws and such  registration  statement  does not
become effective or such registration  and/or  qualification is not completed in
either  case  by  reason  of the  unreasonable  refusal  to  proceed  or lack of
reasonable  cooperation  of APS,  Exsorbet  shall be deemed to have  effected  a
registration under this Agreement and shall have no further obligation  pursuant
hereto.  If a  requested  registration  pursuant to this  Agreement  involves an
underwritten  offering, the underwriter(s) thereof shall be selected or approved
by APS.  Notwithstanding the foregoing,  APS agrees that for a period of one (1)
year  after the  Effective  Date,  APS will not  request  Exsorbet  (except  for
requests  pursuant  to  subsection  (f) below) to register  more than  1,000,000
shares of  Registerable  Stock and that if APS requests the  registration of any
excess  Registerable  Stock during the one (1) year period,  then  Exsorbet will
have sole  discretion as to whether to allow APS to include in the  registration
any additional Registerable Stock over such 1,000,000 share maximum. However, if
APS requests a registration  in the one (1) year period after the Effective Date
and Exsorbet  declines to allow APS to include all of the shares of Registerable
Stock owned by APS in such registration, then Exsorbet

                                        4

<PAGE>



will  cause all  remaining  shares  of  Registerable  Stock  owned by APS at the
conclusion  of the one  (1)  year  period  to be  fully  registered  and  freely
tradeable  within  thirty  (30) days  after the  expiration  of the one (1) year
period after the Effective Date. Except for multiple  registrations  required by
the foregoing provisions, or as a result of registrations pursuant to subsection
(f)  below,  Exsorbet  will  not  be  required  to  effect  more  than  one  (1)
registration pursuant to this Agreement.  Furthermore, in the event APS acquires
at least  1,000,000  shares of registered and freely  tradeable  Exsorbet common
stock within the sixty (60) day period immediately following the Effective Date,
then APS will not  request  Exsorbet  to  register  (other  than a  registration
pursuant to subsection (f) below) any  Registerable  Stock before the expiration
of one (1) year after the Effective Date.
                  (c) Except as otherwise prohibited by applicable law, Exsorbet
will pay all fees and  expenses  incurred  by Exsorbet  in  connection  with the
registration of the Registerable Stock; except for any underwriting commissions,
transfer taxes,  and fees and expenses of counsel for APS, if any,  attributable
to the sale of the Registerable Stock, all of which shall be borne by APS.
                  (d) If Exsorbet is required to use its best  efforts to effect
a registration of the Registerable Stock under this Agreement, Exsorbet shall:
                           (i)      promptly prepare and use its best efforts to
file with the Commission (but in no event more than  thirty (30) days after  
receipt of the Request  from APS) a registration  statement,  on such  
appropriate  registration form of the Commission as shall permit the disposition
of the Registerable Stock and any Other Registerable  Securities  in  accordance
with the intended  method(s) of distribution  specified  in the Request for such
registration  and use its best efforts  thereafter  to cause such  registration
statement to become  effective within thirty (30) days after filing;

                                        5

<PAGE>



      (ii)  prepare and file as soon as reasonably 
practicable with the Commission such amendments and  supplements to such  
registration  statement and the  prospectus used in connection  therewith as may
be necessary to keep such registration  statement effective and such prospectus 
current and to comply with the  provisions of the  Securities  Act with respect 
to the  disposition  of the Registerable  Stock  until  the  earliest  of  (A)  
such  time  as  all  of  the Registerable  Stock has been disposed of in 
accordance with the intended methods of  disposition  by APS, or (B) the 
expiration of the three (3) year period that shall  commence on  the filing of  
the  registration  statement  pursuant  to subparagraph (i) above;
      (iii) furnish to APS such number of copies of preliminary prospectuses and
prospectuses  included in such  registration  statement  and each  amendment and
supplement  thereto as APS may  reasonably  request in order to  facilitate  the
disposition of the Registerable Stock;
      (iv)  use its best efforts to register or qualify the Registerable Stock 
under the State Laws  within  thirty  (30) days  after the filing of the 
registration statement with the Commission and to keep such  registration or 
qualification in effect  for so long as the  registration  statement  filed  
with the  Commission remains in effect as provided in (ii),  above,  provided 
that Exsorbet shall not for any such purpose be required  to qualify generally  
to do  business  as a foreign  corporation  in any  jurisdiction  in which it 
would not  otherwise  be obligated  to be so  qualified,  or to subject  itself 
to  taxation  in any such jurisdiction,  or  to  consent  to  general  service  
of  process in  any  such jurisdiction, or to qualify as a dealer in securities;
      (v)  notify APS, at any time when a prospectus is required to be delivered
by APS under the Securities  Act, upon discovery by Exsorbet that the prospectus
included in such  registration  statement,  as then in effect, or filed with the
Commission pursuant to Rule 424(b),

                                        6

<PAGE>



includes  an untrue  statement  of a material  fact or omits to state a material
fact required to be stated therein or necessary to make the  statements  therein
not misleading in light of the circumstances then existing,  whereupon APS shall
suspend  any  offers  or sales of  Registerable  Stock  until  such time as such
prospectus,  as amended or supplemented  from time to time, shall not include an
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements  therein not misleading in
light of the circumstances then existing; and
         (vi)   furnish, at the request of APS, on the date that such shares are
delivered to the  underwriter  or  underwriters  for sale in  connection  with a
registration  pursuant to this Agreement,  if such shares of Registerable  Stock
are being sold through  underwriters,  (i) an opinion,  dated such date,  of the
counsel representing Exsorbet for the purposes of such registration, in form and
substance as is customarily  given to  underwriters  in an  underwritten  public
offering,  addressed to the underwriters and (ii) a letter dated such date, from
the independent  certified public accountants of Exsorbet, in form and substance
as  is  customarily  given  by  independent   certified  public  accountants  to
underwriters in an underwritten public offering, addressed to the underwriters.
                  (e) APS shall cooperate fully with Exsorbet in connection with
effecting a registration  pursuant to this Agreement,  including but not limited
to  furnishing  such  information  as Exsorbet may from time to time  reasonably
request and as shall be required by law or by the Commission in connection  with
such  registration.  In  connection  with  the  preparation  and  filing  of any
registration  statement  under the  Securities  Act pursuant to this  Agreement,
Exsorbet  will  give  APS,  APS'  underwriters,  if any,  and APS'  counsel  and
accountants,   the  opportunity  to  participate  in  the  preparation  of  such
registration  statement,  each  prospectus  included  therein  or filed with the
Commission, and each amendment thereof or supplement thereto, and will give each
of them

                                        7

<PAGE>



reasonable access to its books and records and such opportunities to discuss the
business of Exsorbet with its officers and the  independent  public  accountants
who have certified its financial  statements as shall be reasonably necessary to
conduct a reasonable investigation within the meaning of the Securities Act.
                  (f) If Exsorbet at any time (including, without limitation, at
any time during the one (1) year period after the  Effective  Date)  proposes to
register any of its securities for sale to the public for its own account and/or
for the account of any other person,  under the  Securities Act (other than by a
registration  on Form  S-4,  S-8 or any  successor  similar  forms or any  other
Commission form of limited  applicability which would not permit such additional
registration),  and if at such time APS has,  or has the right to  acquire,  any
stock of Exsorbet that could qualify as  Registerable  Stock,  Exsorbet will, at
least sixty (60) days prior to filing the registration  statement,  give written
notice to APS of its intention to do so and,  subject to the provisions  hereof,
permit APS to include in such registration  their  Registerable  Stock. Any such
registration shall be at Exsorbet's expense,  except for underwriter's discounts
or  commissions  or  broker's   commissions,   if  any,   attributable  to  such
Registerable  Stock and except for any other  expenses which APS elects to incur
in  connection  therewith  or is  otherwise  required  to bear  pursuant to this
Agreement. To exercise its rights pursuant to this subsection,  APS must deliver
a Request to Exsorbet in accordance  with the  provisions  of Section 1(a),  and
Exsorbet  will use its  best  efforts  to  effect  the  registration  under  the
Securities Act of all Registerable Stock which Exsorbet has been so requested to
register;  provided  that if,  any  time  after  giving  written  notice  of its
intention  to register any  securities  and prior to the  effective  date of the
registration  statement  filed in connection  with such  registration,  Exsorbet
shall determine for any reason not to register or to delay  registration of such
securities, Exsorbet may, at its election, give

                                        8

<PAGE>



written notice of such determination to APS and, thereupon, (i) in the case of a
determination  not to register,  shall be relieved of its obligation to register
any  Registerable  Stock in connection with such  registration,  and (ii) in the
case of a  determination  to  delay  registering  shall  be  permitted  to delay
registering any Registerable Stock being registered  pursuant to this subsection
for the same period as the delay in registering such other securities.

         If a registration  pursuant to this subsection involves an underwritten
offering  of the  securities  so being  registered  for sale for the  account of
Exsorbet,  to be distributed by or through one or more underwriters,  whether or
not the Registerable  Stock so requested to be registered for sale is also to be
included in such  underwritten  offering,  and the managing  underwriter of such
underwritten  offering informs Exsorbet in writing of its belief that the number
of securities  requested to be included in such registration  exceeds the number
which can be sold in (or during) the time of such  offering,  then  Exsorbet may
include in such offering all securities  proposed by Exsorbet to be sold for its
own  account;  and  Exsorbet  shall only be required to use its best  efforts to
include  Registerable  Stock in such  registration on a pro rata basis (based on
the number of shares of  securities  held by all persons who have a  contractual
right to have their  securities  included in the proposed  registration  and who
make  a  written   request  for  inclusion  of  their  shares  in  the  proposed
registration) to the extent possible such that the total number of securities to
be included does not exceed the level  recommended by the managing  underwriter.
The obligations of Exsorbet described in subparagraphs  (iii) and (v) of Section
1(d) shall apply to any  registration  under this  Section  1(f) which  includes
Registerable  Stock.  Furthermore,  the  provision in Section 1(b) that Exsorbet
shall not be required

                                        9

<PAGE>



to  effect a  registration  prior to the  expiration  of one (1) year  after the
Effective  Date,  shall not apply to any  registration  pursuant to this Section
1(f).
                  (g) In connection with any  registration or  qualification  of
the  Registerable  Stock under this Agreement:  (i) Exsorbet shall indemnify and
hold  harmless APS and each  underwriter  thereof,  including but not limited to
each person, if any, who controls APS or such underwriter  within the meaning of
Section  15  of  the  Securities  Act,  against  all  losses,  claims,  damages,
liabilities  and  expenses  (including  but not limited to  reasonable  expenses
incurred in  investigation,  preparing and defending against any claim) to which
such APS,  underwriters  or  controlling  persons may become  subject  under the
Securities  Act, the Securities  Exchange Act of 1934, as amended (the "Exchange
Act"),  or otherwise,  insofar as the same arise out of or are based upon or are
caused by any untrue  statement or alleged  untrue  statement of a material fact
contained  in  any   registration   statement  or  prospectus   (as  amended  or
supplemented  if Exsorbet  shall have  furnished any  amendments or  supplements
thereto)  furnished  pursuant to this Agreement or insofar as the same arise out
of or are based upon or are caused by any omission or alleged  omission to state
therein a material fact  required to be stated  therein or necessary to make the
statements  therein not  misleading,  or insofar as the same arise out of or are
based upon any violation by Exsorbet of the  Securities  Act or the Exchange Act
or any  rule or  regulation  thereunder;  except  that the  foregoing  indemnity
obligations shall not apply insofar as such losses, claims, damages, liabilities
or expenses arise out of or are based upon or are caused by any untrue statement
or  alleged  untrue  statement  or  omission  or  alleged  omission  based  upon
information  furnished in writing by or on behalf of APS or any such underwriter
or  control  person,  or arise out of or are  based  upon any  violation  of the
Securities Act, Exchange Act or any rule or regulation  thereunder by APS or any
such underwriter or control person,

                                       10

<PAGE>



and (ii) APS shall  indemnify  Exsorbet,  its  affiliates  and their  respective
officers,  directors  and  control  persons  against  all such  losses,  claims,
damages,  liabilities  and  expenses  (including  but not limited to  reasonable
expenses incurred in  investigating,  preparing and defending against any claim)
insofar  as the same  arise out of or are based  upon or are  caused by any such
untrue  statement or alleged  untrue  statement or any such  omission or alleged
omission based upon  information  furnished in writing by or on behalf of APS or
any such  underwriter  or  control  person or arise out of or are based upon any
violation  of  the  Securities  Act,  Exchange  Act or any  rule  or  regulation
thereunder by APS or any such underwriter or control person; provided,  however,
that the  liability of APS  hereunder  shall be limited to the lesser of (i) the
net  proceeds,  if any,  received  by APS upon  sale of the  Registerable  Stock
pursuant to any registration  effected hereunder,  or (ii) the proportion of any
such loss, claim, damage,  liability or expense which is equal to the proportion
that the public offering price of shares of Registerable Stock sold by APS under
such  registration  statement  bears to the total public  offering  price of all
securities sold thereunder.

                  Promptly  upon  receipt  by a  party  indemnified  under  this
Agreement of notice of the  commencement of any action against such  indemnified
party with respect to which indemnity or reimbursement may be sought against any
indemnifying party under this Agreement, such indemnified party shall notify the
indemnifying  party in  writing  of the  commencement  of such  action,  but the
failure  so to  notify  the  indemnifying  party  shall  not  relieve  it of any
liability which it may have to any  indemnified  party otherwise than under this
Agreement unless such failure shall  materially  adversely affect the defense of
such action. In case notice of commencement of any such action shall be given to
the indemnifying party as above provided, the indemnifying party shall be

                                       11

<PAGE>



entitled  to  participate  in and, to the extent it may wish,  jointly  with any
other  indemnifying  party  similarly  notified,  to assume the  defense of such
action at its own expense, with counsel chosen by it and reasonably satisfactory
to such indemnified  party. The indemnified party shall have the right to employ
separate counsel in any such action and participate in the defense thereof,  but
the fees and expenses of such counsel (other than reasonable  expenses  incurred
in  investigating,  preparing and defending  against any claim) shall be paid by
the indemnified party unless (a) the indemnifying  party agrees to pay the same,
(b) the  indemnifying  party  fails to assume the  defense of such  action  with
counsel  reasonably  satisfactory  to the  indemnified  party (in which case the
indemnifying party shall not have the right to assume the defense of such action
on behalf of such  indemnified  party),  or (c) the  named  parties  to any such
action (including any impleaded  parties) have been advised by such counsel that
representation of such indemnified party and the indemnifying  party by the same
counsel  would be  inappropriate  under  applicable  standards  of  professional
conduct (in which case the indemnifying party shall not have the right to assume
the defense of such action on behalf of such  indemnified  party).  In the event
that  either  of the  circumstances  described  in  clauses  (b)  and (c) of the
immediately preceding sentence shall occur, the indemnified party shall have the
right to  select a  separate  counsel  and to  assume  such  legal  defense  and
otherwise to  participate  in the defense of any such action,  with the expenses
and  fees  of  such  separate   counsel  and  other  expenses  related  to  such
participation  to be  reimbursed  by the  indemnifying  party  as  incurred.  No
indemnifying  party shall be liable for any settlement  entered into without its
consent.
                  (h) With a view to making  available  the  benefits of certain
rules and regulations of the Commission  which may permit the sale of the shares
of Registerable Stock to the public without registration, Exsorbet agrees to (i)
make and keep, at all times, public information available

                                       12

<PAGE>



as those terms are understood and defined in Rule 144 under the Securities  Act,
(ii) use its  diligent  best  efforts  to file with the  Commission  in a timely
manner all reports and other documents required of Exsorbet under the Securities
Act and the  Securities  Exchange Act of 1934, as amended,  at any time after it
has become  subject to such  reporting  requirements,  and (iii) furnish to APS,
upon request, a written statement as to Exsorbet's compliance with the reporting
requirements  of Rule 144 and a copy of the most  recent  annual  and  quarterly
report of  Exsorbet,  and such other  reports and  documents so filed as APS may
reasonably  request  in  availing  itself  of  any  rule  or  regulation  of the
Commission allowing it to sell any such securities without registration.

     2. Representations and Warranties. Exsorbet represents and warrants to APS 
as follows:      
                 (a) Exsorbet is a corporation duly organized, validly existing,
and in good standing under the laws of the State of Idaho and has full corporate
power and authority  to carry  on its  business  as now  conducted  and to enter
into and perform this  Agreement.  This  Agreement has been duly and validly  
authorized, executed  and  delivered  by  Exsorbet  and  constitutes  the valid 
and  binding obligation of Exsorbet enforceable against it in accordance with 
its terms.
                  (b) The  1,200,000  initial  shares of Exsorbet  common  stock
purchased  by APS,  and any  other  common  stock of  Exsorbet  issued to APS by
Exsorbet pursuant to the Warrant or this Agreement,  when issued, will have been
duly and validly authorized and issued, will be fully paid and nonassessable and
will not have been issued in violation of the preemptive rights of any person or
applicable federal or state securities laws.
                  (c) There is only one class of common stock of Exsorbet 
outstanding and such stock trades on the Nasdaq Stock Market, Inc. SmallCap 
Market under the symbol "EXSO."

                                       13

<PAGE>



                  (d)  Exsorbet has made  available to APS copies of  Exsorbet's
annual  report  on Form  10-K for the year  ended  December  31,  1995,  and its
quarterly  reports  on Form  10-Q  (or Form  10-Q/A  where  applicable)  for the
quarters  ended March 31, 1996 and June 30, 1996,  (collectively,  the "Periodic
Reports"), in the form filed with the Commission pursuant to the requirements of
the Exchange Act. At the time of filing, the Periodic Reports were appropriately
responsive to the  requirements of the Exchange Act, were complete and proper in
form and did not contain an untrue  statement  of a fact or omit to state a fact
required to be stated  therein or necessary to make the statements  therein,  in
light of the  circumstances  under which they were made, not  misleading.  Since
June 30, 1996, and through the date of this Agreement,  no event has occurred as
a consequence of which Exsorbet would be required to file, on or before the date
of this Agreement,  a current report on Form 8-K pursuant to the requirements of
the Exchange Act.

         3.       Other Agreements.
                  (a) Exsorbet agrees to reimburse APS for APS' legal fees up to
$10,000, plus travel and other out-of-pocket  expenses incurred by legal counsel
for APS in connection with the transactions  contemplated by this Agreement, the
Warrant  and the  Options  and in  connection  with  the loan  evidenced  by the
Security  Documents.  Such  amount  shall  be  payable  upon  execution  of this
Agreement.
                  (b) APS agrees to hold 1,000,000 of the shares of common stock
of  Exsorbet  initially  purchased  by APS for at least  one (1) year  after the
Effective  Date;  except  that APS may sell such  shares  prior to such time (i)
pursuant to the Stock Put, and/or (ii) pursuant to a registration of such shares
as contemplated by this Agreement. Furthermore, in the event APS desires to sell

                                       14

<PAGE>



more than 20,000 shares of Exsorbet  common stock for cash on any particular day
(other  then  pursuant  to a  registration  statement  in  effect  with  respect
thereto),  then APS will give Exsorbet five (5) days advance  written  notice of
such  intention,  specifying the price,  or other pricing  methodology,  and any
other terms and conditions of such sale, and Exsorbet shall be entitled,  during
such five (5) day  period to elect to  purchase  such stock from APS on the same
terms and  conditions,  provided  such  purchase by Exsorbet  must be  concluded
within three (3) days of  exercising  the  election;  provided  the  restriction
contained  in  this  sentence  shall  not  apply  to  APS  unless  all  Exsorbet
shareholders  owning five percent (5%) or more of Exsorbet common stock agree to
be bound in writing by the same restrictions.
                  (c) Exsorbet agrees to cause one (1) individual  designated by
APS to be appointed to Exsorbet's Board of Directors promptly after the October,
1996 Exsorbet  shareholder  meeting, and to nominate and use its best efforts to
cause the Exsorbet  shareholders to elect and thereafter  maintain a designee of
APS as an Exsorbet Board member for the period  designated  below.  In the event
APS acquires  fifty  percent (50%) of the  aggregate  shares of Exsorbet  common
stock APS is  entitled to  purchase  under the  Warrant and Options  pursuant to
exercise of the Warrant and/or any of the Options, then APS shall be entitled to
designate a second  individual  to serve on the Board of  Directors of Exsorbet,
and Exsorbet  agrees to cause such person to be promptly  appointed to its Board
of  Directors  and to nominate  and use its best  efforts to cause the  Exsorbet
shareholders to elect and thereafter  maintain such second designee in place for
the  period  specified  below.  Once  APS has the  right to  designate  a second
Exsorbet Board member,  in the event the size of the Exsorbet Board of Directors
is increased or otherwise  becomes larger then ten directors,  then APS shall be
entitled to designate a third  individual  to serve on the Board of Directors of
Exsorbet, and

                                       15

<PAGE>



Exsorbet shall cause such person to be promptly appointed and shall nominate and
use its best efforts to cause the Exsorbet  shareholders to elect and thereafter
maintain a third APS  designee on the Board of Directors  for the period  stated
below. The foregoing provisions related to the designation by APS of individuals
to serve on the Board of Directors  of Exsorbet  shall remain in place until APS
(together with its subsidiaries and affiliates) owns less than five percent (5%)
of the issued and  outstanding  common stock of Exsorbet,  and thereafter in the
event APS  exercises  its rights  under the Stock Put until APS has been paid in
full all  amounts  due APS upon sale of the stock to  Exsorbet  pursuant  to the
Stock Put.  All APS  designees  to the Board of  Directors  of  Exsorbet  may be
changed from time to time by written notice of APS to Exsorbet.  Exsorbet agrees
to cause such new  designees  to be elected to its Board of  Directors  promptly
upon receipt of such notice.  Each individual  designated by APS to serve on the
Board of Directors of Exsorbet  shall be the  beneficiary of at least $3 million
of director and officer  insurance  coverage  maintained by Exsorbet (subject to
reasonable  deductibles,  which  deductibles  shall  be  paid by  Exsorbet)  and
otherwise reasonably acceptable to APS. Exsorbet further agrees that, as long as
APS has the right to designate any Exsorbet  directors,  Exsorbet will take such
steps as may be necessary to cause its articles of  incorporation  and bylaws to
contain  indemnity  provisions in favor of such  directors to the maximum extent
allowed by applicable law.
                  (d) Exsorbet agrees to consult with APS concerning the form of
any and all press  releases  related  to the  transactions  contemplated  by the
purchase of the 1,200,000 shares of Exsorbet common stock,  this Agreement,  the
exercise  of the Stock  Put,  the  Warrant  and/or any of the  Options,  and the
acquisition  of 7-7,  Inc.,  and to  obtain  the  approval  of APS  prior to the
dissemination thereof, which approval shall not be unreasonably withheld.

                                       16

<PAGE>



                  (e) In the event  that,  at any time  during a period of three
(3)  years  after  the  Effective  Date,  Exsorbet  proposes  to  engage  in any
transaction that involves the issuance of additional Exsorbet equity securities,
options  or other  rights  to  acquire  Exsorbet  equity  securities,  or rights
convertible  into any Exsorbet equity  securities,  or proposes to engage in any
other non-equity related transaction that involves amounts in excess of $100,000
(all the foregoing are collectively  referred to as "Target  Transactions"),  in
which any  person or entity  who owns five  percent  (5%) or more of  Exsorbet's
outstanding common stock ("Major  Shareholders") is to be a participant,  or has
the right to participate, APS shall have a right of first refusal to participate
in any such  transaction  on the same  basis and terms as the  applicable  Major
Shareholder(s).  Exsorbet  agrees to give APS sixty  (60) days  advance  written
notice of any proposed Target  Transaction,  including a full description of the
terms and conditions  thereof,  and to make  available  such  information as APS
shall reasonably request in connection with reaching a decision as to whether to
exercise APS' right of first  refusal.  To exercise its right of first  refusal,
APS must notify  Exsorbet in writing prior to the  expiration of such sixty (60)
day period and, if it exercises such right,  shall be entitled to participate in
the Target  Transaction on the same terms and conditions as the applicable Major
Shareholder(s). In the event there are substantial modifications to the proposed
terms of any such Target  Transaction  during  such sixty (60) day  period,  APS
shall  be  entitled  to a new  notice  and  sixty  (60) day  period  in which to
determine to exercise its right of first refusal.  Furthermore,  Exsorbet agrees
to cause all Exsorbet shareholders who are also directors of Exsorbet, as of the
Effective  Date,  or  thereafter,  to execute and deliver to APS an agreement in
form and  substance  acceptable  to APS,  to vote  their  shares in favor of the
election of APS designees to the Exsorbet Board of Directors as  contemplated in
subsection (c) above.

                                       17

<PAGE>



                  (f) In the event  any  shareholder  defaults  under any of the
Options  and APS is unable,  within  thirty (30) days of such  default  (without
recourse to litigation),  to acquire the Exsorbet common stock subject to any of
such  Options,  then Exsorbet will sell to APS such number of shares of Exsorbet
common stock,  at the exercise  price stated in the  applicable  Option,  as APS
would have been able to purchase under the Options in default.
                  (g) For a period of sixty (60) days after the Effective  Date,
APS shall be  entitled to full access to the books,  records and  management  of
Exsorbet and its subsidiaries, during reasonable business hours, to afford APS a
full  opportunity to perform a due diligence review with regard to the business,
financial and legal affairs of Exsorbet.
                  (h) APS acknowledges and agrees that Exsorbet has disclosed to
APS that Exsorbet is considering a merger into a Delaware  corporation,  whereby
the Delaware  corporation  will be the  surviving  corporation,  and which would
result in the change of the name Exsorbet to  "Consolidated  Eco-Systems,  Inc."
For all  purposes  of this  Agreement  the term  "Exsorbet"  shall refer to such
surviving successor corporation in the event that such merger and/or name change
is consummated,  and all terms and provisions of this  Agreement,  including all
terms  providing  for  receipt  of  Exsorbet  common  stock and other  terms and
conditions  shall  apply  with  regard  to such  proposed  merger.  APS shall be
entitled to cause the surviving  corporation after any such merger to re-execute
documents  evidencing the Stock Put, any or all of the Security  Documents,  the
Warrant  and  this  Agreement  in the  name of the  successor  corporation,  but
otherwise to be identical in terms to the terms of the original agreements.
                  (i) In the event  APS  purchases  any  Exsorbet  common  stock
during the sixty (60) day period immediately following the Effective Date, other
than the initial 1,200,000 shares

                                       18

<PAGE>



purchased  as  described  in the  recitals  hereto and other than any  purchases
through  exercise of the Warrant or any of the Options,  at a per share price of
$2.75 or less ("Other Purchased Stock"), then APS will not exercise its right to
purchase,  under the Options, the number of shares equal to the number of shares
of Other  Purchased  Stock it acquired  during  such sixty (60) day period.  The
foregoing  shall not in any way limit APS' ability to exercise all of its rights
under and pursuant to the Warrant.

         4. Remedies. This Agreement may be enforced at either law or in equity,
including, but not limited to, injunctive relief. In case any one or more of the
provisions  of this  Agreement  shall,  for any  reason,  be held to be invalid,
illegal or  unenforceable  in any respect,  any other  provision  hereof in this
Agreement  shall be  construed as if such  invalid,  illegal,  or  unenforceable
provision  had  never  been   contained   herein.   Such  invalid,   illegal  or
unenforceable  provisions  shall be given  effect  to the  maximum  extent  then
permitted by law. Exsorbet shall be deemed to be in default under this Agreement
if there is a default (which is not cured after any required  notices of default
and opportunity to cure) under the Warrant or any of the Security Documents.

         5. Governing Law and Venue.  This  Agreement  shall be governed by, and
construed  and  enforced  in  accordance  with,  the laws of the  State of Texas
(except  the laws of that  jurisdiction  that would  render  such  choice of law
ineffective).  Venue for any action  relating to this Agreement  shall be proper
only in Texas.


                                       19

<PAGE>



         6.       Counterparts.  This Agreement may be executed simultaneously 
in one or more counterparts, each of which shall be deemed an original, and all
of which together shall constitute one and the same instrument.

         7.  Inurement.  This Agreement shall be binding upon the parties hereto
and their  respective  heirs,  legal  representatives,  successors and permitted
assigns.  This Agreement shall not be assignable by any party hereto without the
express  written  consent of the other party hereto in each  instance;  provided
that upon written notice to Exsorbet,  APS may assign its rights and obligations
under this Agreement to any affiliate or subsidiary of APS.

         8.  Reservation  of  Shares.  Exsorbet  shall at all  times  until  the
expiration of the rights provided under the Warrant and the Options, reserve for
issuance and delivery the number of shares of Exsorbet  common stock as shall be
required for issuance and delivery pursuant to the Warrant and this Agreement.

         9.  Notices.  Any notices  required or permitted to be given under this
Agreement  shall be given in  writing  and  shall be  deemed  received  (a) when
personally  delivered to the relevant party at its address as set forth below or
(b) if sent by mail, on the third day  following the date when  deposited in the
United  States  mail,  certified or  registered  mail,  postage  pre-paid to the
relevant party at its address indicated below:
         APS:                       American Physicians Service Group, Inc.
                   1301 Capital of Texas Highway, Suite C-300

                                       20

<PAGE>



                                    Austin, Texas 78746-6550
                                    Attn: President

         Exsorbet:                  Exsorbet Industries, Inc.
                                    1401 South Waldron, Suite 201
                                    Fort Smith, Arkansas 72903
                                    Attn: Charles E. Chunn, Jr.
Each party may change its  address  for  purposes  of this  Agreement  by proper
notice to the other party.


                                       21

<PAGE>


         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the day and year first above written.

         EXSORBET:                                 EXSORBET INDUSTRIES, INC.



                                                    By:

                                                    Printed Name:

                                                    Title:


         APS:                                       AMERICAN PHYSICIANS SERVICE
                                                      GROUP, INC.



                                                    By:

                                                    Printed Name:

                                                    Title:




                                       22

                                                                 Exhibit 10.20

NEITHER THIS WARRANT NOR ANY SHARES OF COMMON STOCK ISSUABLE UPON THE EXERCISE
OF THIS WARRANT HAVE BEEN REGISTERED  UNDER THE SECURITIES ACT OF 1933, AS 
AMENDED, AND THE RULES AND REGULATIONS PROMULGATED THEREUNDER (THE  "SECURITIES
ACT"). THIS WARRANT AND THE COMMON STOCK ISSUABLE UPON EXERCISE OF THIS WARRANT 
MAY NOT BE OFFERED,  SOLD, OR OTHERWISE TRANSFERRED IN THE ABSENCE OF 
REGISTRATION UNDER THE  SECUlUTIES  ACT OR SUCH  OFFER,  SALE  OR  TRANSFER  IS 
EXEMPT  FROM  SUCH REGISTRATION.

                    COMMON STOCK PURCHASE WARRANT CERTIFICATE

                            Dated: September 30, 1996

                                    Warrants

                           to Purchase 300,000 Shares

                   of Common Stock, S0.001 Par Value Per Share

     EXSORBET  INDUSTRIES,  INC., an Idaho  corporation (the "Company"),  hereby
certifies that American Physician Service Group, Inc., its successors and assign
(collectively,  the "Holder"),  for value received, is entitled to purchase from
the Company at any time  commencing on October 1, 1996 and ending on December 5,
1996 up to 300,000  shares (the  "Shares") of the Company's  common  stock,  par
value S0.001 per share (the "Common Stock"),  at a price of S2.75 per share (the
"Exercise Price").

     1.  Exercise of Warrants. Upon  presentation  and  surrender of this Common
Stock Purchase Warrant Certificate ("Warrant Certificate" or "this Certificate")
during the Exercise Period,  with the attached  Purchase Form duly executed,  at
the administrative  office of the Company at 1401 South Waldron Road, Suite 201,
Fort Smith,  Arkansas 72903, together with a check payable to the Company in the
amount of the Exercise Price multiplied by the number of Shares being purchased,
the  Company  will cause its  Transfer  Agent to  deliver to the holder  hereof,
certificates  of Common  Stock which in the  aggregate  represent  the number of
Shares being purchased. All or less than all of the Warrants represented by this
Certificate  may be exercised and, in case of the exercise of less than all, the
Company,  upon  surrender  hereof,  will  deliver  to the  holder a new  Warrant
Certificate representing the number of shares which have not been exercised.

     2. Exercise  Period.  The right to acquire shares of the Company pursuant
to this Warrant Certificate shall commence on October 1, 1996 and terminate upon
December 5, 1996 (the "Exercise  Period").  After December 5, 1996, this Warrant
Certificate  shall  become null and void with  respect to any  remaining  shares
which could have been,  but were not,  acquired by the Holder  hereof during the
Exercise Period.

     3. Rights and Obligations of Holders of this Certificate. (a) The Holder of
this  Certificate  shall not, by virtue  hereof,  be entitled to any rights of a
stockholder in the Company, either at law or in equity; provided,  however, that
in the  event  any  certificate  representing  shares  of  Common  Stock or otha
securities  is issued to the holder  hereof upon  exercise of some or all of the
Warrants,
<PAGE>

such  holder  shall,  for all  purposes,  be deemed to have become the holder of
record of sueh Common Stock on the date on which this Certificate, together with
a duly executed  Purchase  Form,  was  surrendered  and payment of the aggregate
Exercise  Price was made,  irrespective  of the date of  delivery  of sueh share
certifieate.

     (b) In case the Company  shall (i) pay a dividend in Common Stock or make a
distribution in Common Stock, (ii) subdivide its outstanding Common Stock into a
greater number of shares,  or (iii) combine its outstanding  Common Stock into a
smaller  number of shares  (including a  recapitalization  in connection  with a
consolidation  or merger in which the  Company is the  continuing  corporation),
then the  Exercise  Price on the record date of such  division or the  effective
date of such action shall be adjusted by  multiplying  such Exereise  Price by a
fraction,  the  numerator  of which is the  number of  shares  of  Common  Stock
outstanding  immediately  before such event and the  denominator of which is the
number of shares of Common Stock  outstanding  immediately  after such event and
the number of shares of Common Stock for which this Warrant  Certificate  may be
exercised  immediately  before such event shall be adjusted by multiplying  such
number by a fraction,  the numerator of which is the Exercise Price  immediately
before such event and the denominator of which is the Exercise Price immediately
after such event.

     ( c) In case of any  consolidation  or merger of the  Company  with or into
another corporation (other than any consolidation or merger in which the Company
is the  continuing  corporation  and  which  does not  result  in any  increase,
decrease,  or other  reclassification of the outstanding shares of Common Stock)
or the  conversion  of such  outstanding  shares of Common  Stock into shares or
other  stock or other  securities  or  property,  or the sale or transfer of the
property of the Company as an entirety or  substantially  as an entirety,  there
shall be deliverable  upon exercise of the Warrant  Certificate  (in lieu of the
number of shares of Common Stock  theretofore  deliverable) the number of shares
of stock or other  securities  or  property  to which a holder of the  number of
shares of Common  Stoek which would  otherwise  have been  deliverable  upon the
exercise of this Warrant  Certificate  would have been entitled upon such action
if this Warrant Certifieate had been exercised immediately prior to such action.

     4. Common Stock. (a) The Company covenants and agrees that all shares of 
Common Stock issuable upon exercise of this Warrant Certificate will, upon 
delivery, be duly and validly authorized and issued, fully-paid and 
non-assessable.

     (b) The  Company  covenants  and agrees that it will at all times prior to
expiration of this Warrant  Certificate reserve and keep available an authorized
number of shares of its Common Stock and other applicable  securities sufficient
to permit the exercise in full of all outstanding options,  warrants and rights,
including the Warrants.

     5.  Issuance  of Certificates.  As soon as  possible  after full or partial
exercise of this Warrant,  but in any event no more than five (5) business days,
the  Company,  at its  expense,  will  cause to be issued in the name of the and
delivered to the holder of this  wanant, a certificate or  certificates  for the
number of fully  paid and  non-assessable  shares of Common  Stock to which that
holder shall be entitled on such exercise. No Fractional shares will be issued 
on exercise of this Warrant. If on any exercise of this Warrant, a fractional 
share results, the Company will pay the cash value of that
<PAGE>

fractional  share,  calculated  on the  basis of the  Exercise  Price.  All such
certificates shall  bear a  restrictive  legend to the  effect  that the  Shares
represented by such certificate have not been registered under the Securities 
Act of 1933,  as  amended,  and the  Shares  may not be sold or  transferred  
in the absence  of such  registration  or an  exemption  therefrom,  such  
legend to be substantially  in the form of the bold face language  appeanng on
Page l of this Warrant Cenificate.

     6.  Disposition  of  Warrants  or  Shares.   The  holder  of  this  Warrant
Certificate, each transferee hereof and any holder and transferee of any Shares,
by his or its acceptance thereof, agrees that no public distribution of Warrants
or Shares will be made in violation  ofthe  provisions of the  Securities Act of
1933,  as  amended,  and  tbe  rules  and  regulations   promulgated  thereunder
(collectively, the "Act").

     7.  Notices.  Except as otherwise  specified  herein to the  contrary,  all
notices,  requests,  demands and otber communications  required or desired to be
given  hereunder  shall only be  effective  if given in writing by  certified or
registered mail, return receipt requested,  postage prepaid,  or by U.S. express
mail service or private overnight  courier service sucb as Federal Express.  Any
such  notice  shall  be  deemed  to have  been  given  (a) on tbe  business  day
immediately  subsequent  to mailing,  if sent by U.S.  express  mail  service or
private overnight courier  service,  or (b) five (5) business days following the
mailing  thereof,  if mailed by certified or registered  mail,  postage prepaid,
return  receipt  requested,  and all such notices shall be sent to the following
addresses (or to such other address or addresses as a party may have advised the
other in the manner provided in this Section):

If to the Company:

Charles E. Chunn, Jr.
1401 South Waldron Road, Suite 201
Fort Smith, AR 72903

If to the Holder:

Duane K. Boyd, Jr. 1301 Capital of Texas Highway Suite C-300 Austin, TX 78746.

   8. Goveming Law. This Warrant Certificate and all rights and obligations 
hereunder shall be deemed to be made under and govemed by the laws of the State 
of Texas without giving effect to the conflicts of laws provisions.

   9. Successors and Assigns. This Warrant Certificate shall be binding upon and
shall inure to the benefit of the parties hereto and their respective successors
and assigns.

   10. Headings. The headings of various sections of this Warrant Certificate 
have been inserted for reference only and shall not be a part of this 
Certificate.
<PAGE>

     IN WITNESS WHEREOF,  the Company has caused this Warrant  Certificate to be
duly executed,  manually or by facsimile,  by one of its officers hereunto duly
authorized.

EXSORBET INDUSTRIES, INC.

Date: September 30, 1996

By:

   Executive Vice-President
<PAGE>

                              ELECTION TO PURCHASE

                           To Be Executed by the Holder
                      in Order to Exercise the Common Stock
                          Purchase Warrant Certificate

     The undersigned Holder hereby irrevocably elects to exercise ______ of the
Warrants represented by this Common Stock Warrant  Certificate,  and to purchase
the shares of Common  Stock  issuable  upon the  exercise of such  Warrants  and
requests that certificates for securities be issued in the name of:

- --------------------------------------------------
(Please type or print name and address)

- --------------------------------------------------

- --------------------------------------------------
(Social Security or tax identification number)

and delivered to _________________________________

(Please type or print name and addras)

and, if such number of Warrants shall not be all the Warrants  evidenced by this
Common Stock Warrant  Certificate,  that a new Common Stock Warrant Certificate
for the balance of such Warrants be registered in the name of, and delivered to,
the Holder at the address stated below.

     In  full  payment  of the  purchase  price  with  respect  to tne  Warrants
exercised and transfer taxes, if any, the undersigned  hereby tenders payment of
S _______ by check or money  order  payable in United  States  currency  to the
order of Exsorbet Industries, Inc., or its successor.

                                   American Physicians Service Group, Inc.

Dated:___________                  By:___________________________________
                                      Name:
                                      Title:
                                   
                                   --------------------------------------
                                                  (Address)
                                   --------------------------------------
                                   
                                   --------------------------------------
                                  (Social Security or tax identification number)
<PAGE>



Exchange Act General Rules and Regulations

     Note:  "Policy-making  function" is not  intended to include  policy-making
functions that are not  significantt.  If pursuant to Item 401 (b) of Regulation
S-K the issuer  identifies  a person as an  "executive  officer," it is presumed
that the Board of  Directors  has made that  judgment  and that the  persons  so
identified  are the  officers for purposes of Section 16 of the Act, as are such
other persons enumerated in this paragraph (f), but not in Item 401 (b).

(g) The term "portfolio securities" shall mean all securities owned by an 
entity, other that securities issued by the entity.

     (h) Tbe term "put  equivalent  position"  shall mean a derivative  security
position that increases in value of the underlying equity decreases,  including,
but not limited to, a long put option and a short call option position.

Rule 16a-2. Persons and Transactions Subject to Section 16.

     Any person who is the beneficial  owner,  directly or  indirectly,  of more
that 10  percent  of any class of  equity  securities  ( 10 percent  beneficial
owner") registered pursuant to Section 12 of the Act, any director or officer of
the issuer of such securities,  and any person specified in Section 17(a) of the
Public  Utility  Holding  Company Act of 193S or Section 30(f) of tbe Investment
Company Act of 1940,  including  any person  specified  in Rule 16a-8,  shall be
subject to the  provisions  of Section 16 of the Act. The rules under Section 16
of the Act apply to any class of equity  securities of an issuer  whether or not
registered  under Section of the Act. The rules under Section 16 of the Act also
apply to nonequity  securities as provided by the Public Utility Holding Company
Act of 1935 and the Investment Company Act of 1940. With respect to transactions
by persons subject to Section 16 of the Act:

     (a) A transaction(s) carried out by a director or officer in the six months
prior to the director or officer  becoming subject to Section 16 oftbe Act shall
be subject to Section 16 of the Act reported on tbe first  required  Form 4 only
if tbe transaction(s)  occurred within six months of the transaction giving rise
to the Form 4 filing  obligation  and the director or officer became  subject to
Section 16 of tbe Act solely as a result of the  issuer  registering  a class of
equity securities pursuant to Section 12 of the Act.

     (b) A  transaction(s)  following  cessation  of director or officer  status
shall be subject to Section 16 of the Act only if executed  within six months of
a transaction that occurred while that person was a director or officer.

     (c )  The  transaction  that  results  in a  person  becoming  a 10 percent
beneficial  owner is not  subject  to  Section  16 of the Act  unless the person
otherwise is subject to Section 16 of the Act. A 10 percent beneficial owner not
otherwise subject to Section 16 of the Act must report  only those  transactions
conducted  while  tbe  beneficial  owner of more that 10  percent  of a class of
equity securities of tbe issuer registered pursuant to Section 12 of the Act.

     (d) (1)  Transactions  by a  person  or  entity shall  be  exempt  from the
provisions of Secdon 16 of the Act for the 12 months  following  appointment and
qualification, to the extent such person or entity is acting as:

(i) Executor or administrator of tbe atate of a decedent;

(ii) Guardian or member of a committee for an incompetent;

(iii)  Receiver,  trustee  in  bankruptcy,  assignee  for  tbe  benefit  of
creditors, conservator, liquidating agent, or other similar person duly 
authorized by law to administer the estate or assets of another person; or

(iv) Fiduciary in a similar capacity.

(Bulletin Not 14S,06-10-94)



                                                                 Exhibit 10.21
                          CONTINGENT WARRANT AGREEMENT


         This Contingent  Warrant  Agreement (this  "Agreement") is executed and
delivered by Exsorbet  Industries,  Inc. an Idaho Corporation for the benefit of
American Physicians Service Group, Inc., a Texas corporation ("APS").

                                    RECITALS

         WHEREAS, Exsorbet and APS are engaging in certain transactions pursuant
to which,  among other things,  certain  shareholders of Exsorbet are to execute
and deliver option  agreements to APS authorizing APS to purchase certain shares
of Exsorbet common stock (the "Option Agreements"); and

         WHEREAS,  Exsorbet has agreed that,  in the event of any default  under
any of the Option  Agreements,  Exsorbet will sell the  corresponding  number of
shares of Exsorbet common stock to APS as necessary to allow APS to purchase the
same  number of shares as would  have been the case had there not been a default
under the applicable Option Agreements; and

         WHEREAS,  certain of the  stockholders  who were to execute and deliver
Option Agreements to APS at the closing of the transactions  contemplated  above
(the  "Closing")  have not done  so,  resulting  in APS  receiving  total  share
purchase rights which are 400,000 shares less than originally bargained for, and
Exsorbet  has  agreed to execute  and  deliver  this  Agreement  to APS  whereby
Exsorbet will either cause such additional  Option Agreements to be executed and
delivered to APS or will sell the corresponding number of shares to APS.

         NOW,  THEREFORE,  in  consideration of the foregoing and other good and
valuable  consideration,   the  receipt  and  sufficiency  of  which  is  hereby
acknowledged, Exsorbet hereby agrees as follows:

         1.  Exsorbet  will use its  best  efforts  to cause  one or more of its
shareholders  to execute and  deliver,  on or before  October 30,  1996,  option
agreements (the  "Additional  Options") to APS allowing APS to purchase,  in the
aggregate,  400,000 shares of Exsorbet common stock at a purchase price of $2.75
per share. The Additional  Options shall be exercisable at any time prior to the
expiration  of sixty (60) days from the date  executed and  delivered to APS, in
substance and form  acceptable to APS and shall otherwise be in the same form as
the Option  Agreements  delivered at the Closing.  The 400,000 shares subject to
the Additional  Options shall be in addition to the shares covered by the Option
Agreements delivered at the Closing.

         2. In the event  Exsorbet  is  unsuccessful,  on or before  October 30,
1996,  in  causing  the  execution  and  delivery  to APS of all the  Additional
Options,  then  Exsorbet  will execute and deliver to APS a warrant to purchase,
for $2.75 per share, the number of shares of Exsorbet common stock as determined
by  subtracting  the number of shares  purchasable  by APS under any  Additional
Options  that were  obtained  and  delivered to APS by October 30, 1996 from the
400,000 share total.

                                        1

<PAGE>






Such additional warrant shall be exercisable at any time prior to the expiration
of sixty  (60) days  from the date  executed  and  delivered  to APS,  and shall
otherwise be identical in form to that  certain  Common Stock  Purchase  Warrant
Certificate dated September 30, 1996, pursuant to which Exsorbet granted APS the
right to purchase up to 300,000  shares of Exsorbet  common stock (the "Original
Warrant').

         3. The 400,000 share total referred to in paragraphs 1 and 2 above, and
the corresponding  $2.75 per share purchase price,  shall be subject to the same
automatic adjustments as provided for in the Original Warrant.

         4. This  Agreement  shall be construed and enforced in accordance  with
the laws of the  State of  Texas.  Exsorbet  acknowledges  and  agrees  that its
delivery of this Agreement and its performance of its obligations  hereunder are
a material  inducement to APS agreeing to  consummate  the  transactions  at the
Closing.

         IN WITNESS WHEREOF, Exsorbet has executed and delivered this Agreement,
intending to be legally bound thereby, on September 30, 1996.

                                                     EXSORBET INDUSTRIES, INC.


                                                     By:
                                                     Printed N
                                                     Title:





                                        2



                                                                 Exhibit 10.22
                                OPTION AGREEMENT

     THIS AGREEMENT is made and entered into on this 30th day of September, 1996
by and between American  Physicians  Service Group,  Inc.  ("APS"),  a Delaware
corporation, and DR. Edward Schrader, an individual ("Stockholder").

IT IS AGREED BY AND BETWEEN THE PARTIES AS FOLLOWS:

     1. Identification of Exsorbet Industries. Inc. Exsorbet Industries, Inc. is
an Idaho corporation, having its principal place of business in Jackson, 
Mississippi. The only class of common stock of Exsorbet Industries, Inc. trades 
on the Nasdaq Stock Market, Inc. SmallCap Market under the symbol "EXSO". As 
used herein, the term "Exsorbet" shall refer to Exsorbet Industries, Inc. and 
its successors.

     2. Disclosures. Stockholder has disclosed to APS that Exsorbet, through its
Board of Directors, has proposed merger into a Delaware corporation, whereby tne
Delaware corporation would be the surviving  corporation,  and changing the name
of Exsorbet to Consolidated EcoSysterns, Inc. The term "Exsorbet" shall refer to
such  surviving or successor  corporation  in the event that such merger  and/or
name change is approved.

     3. Representations. Stocknolder has made no representadons to APS 
concerning the financial condition of Exsorbet and its subsidiaries. Stockholder
has made no representations or warranties concerning the future value of 
Exsorbet stock, future earnings of Exsorbet, or any other representations
concerning Exsorbet, except as are identified herein.

     4. Stock Ownership. Stockholder is the owner of 0 shares of common stock of
Exsorbet,  such shares  having  been  issued  pursuant to Rule 144 of tne United
States Securities and Exchange  Commission  ("Rule 144"). Such shares of common
stock are subject to the  provisions  of Rule 144 and all  applicable  state and
federal  securities  regulations and statutes.  Stockholder will not transfer or
assign any of such stock until expiration of this option agreement.

     5. Option  Agreements.  Stockholder  possesses  a present  right to acquire
335,000 shares of common  stock of Exsorbet  pursuant to an option  agreement or
agreements,  copies of which are attached hereto. Stockholder will not transfer,
extinguish or assign any of such options or rights  thereunder  until expiration
of this option agreement.

     6.  Option  Grant to APS.  For a period of sixty days after  September  30,
1996, Stockholder grants to APS an exclusive right to acquire 0 shares of common
stock of  Exsorbet,  representing  a  portion  of  those  shares  identified  in
paragraph 4, above. The acquisition price shall be $2.75 per share.

     7.  Additional  Option  Grant to APS.  For a period  of  sixty  days  after
September  30, 1996,  Stockholder  grants to APS an  exclusive  right to acquire
167,500 shares of common stock of Exsorbet,  by exercising such portion of the
options  identified in paragraph 5, above as necessary to acquire such number of
shares. The acquisition price shall be S2.75 per share.
<PAGE>

     8. Exercising of Stock Options.  Stockholder  warrants and covenants with 
APS that he will,  upon  exercising  of the option  specified in paragraph 6 or
7, above, exercise the option  agreements  with  Exsorbet,  acquiring the number
of shares being  ultimately  transferrable to APS. Such option exercise shall 
occur within two  business  days of  notification  by APS that it is  exercising
the  option specified herein.

     9. APS  Agreements.  APS: (A) understands  that the Exsorbet stock has not
been, and will not be,  registered  under the Securities Act, or under any state
securities  laws,  and are being  offered and sold in reliance  upon federal and
state  exemptdons for  transactions  not involving any public  offering;  (B) is
acquiring the Exsorbet  stock for its own account for investment  purposes,  and
not with a view to the  distribution  thereof;  (C) is a sophisticated  investor
with  knowledge  and  experience  in business  and  financial  matters,  (D) has
received or will receive certain information concerning Exsorbet and has had the
opportunity to obtain additional information as desired in order to evaluate the
merits and the risks inherent in holding the Exsorbet stock; (E) is able to bear
the economic risk and lack of liquidity  inherent in holding the Exsorbet stock;
and (F) is an  Accredited  Investor,  as defined  in  Regulation  D  promulgated
pursuant to the Secunties Act of 1933, as amended.

     10. Paragraph Headings. Paragraph Headings, being the underlined portion at
the beginning of each section, are intended for assistance only and shall not 
alter, modify, amend, or change the meanings of the written paragraphs.

     11.  Construction.  This Agreement shall be liberally construed in favor of
granting an exclusive  option upon the terms  specified  herein.  In furtherance
thereof,  this  Agreement  shall be  construed in  accordance  with the laws and
statutes of the State of Texas, being the principal place of business of APS.

     12. Advice to Seek Legal Counsel.  Stockholder  has sought and obtained the
advice of counsel prior to entering this Agreement or has been strongly  advised
to obtain legal counsel  concerning the advisability of entering this Agreement.
In entering  this  Agreement,  Stockholder  is not relying upon any  statements,
representations,  or opinions of: (a) any attomeys or counsel for or of Exsorbet
or APS; (b) any representatives,  agents,  officers,  employees, or directors of
Exsorbet  Industries,  Inc., its  subsidiaries,  or APS; or (c) any person other
than his retained legal attorney.

13. Notices. Notices to Stockholder shall be delivered to: Ed Schrader

     Notices to APS shall be  delivered  to:  Duane Boyd,  Jr.,  1301 Capital of
Texas Highway, Suite C-300, Austin, TX 78746.

     All notices  shall be  delivered  by  certified  mail with a retum  receipt
requested,  by ovemight courier, or by facsimile.  All notices shall be complete
upon delivery.

     14. Cooperation. Stockholder agrees to fully cooperate with APS in the 
event that APS elects to exercise any rights under this Agreement. Stockholder 
shall take no action which would obstruct the ability of APS to exercise its 
rights under this Agreement.
<PAGE>

     15. Procedure for Exercising Option. APS may exercise its rights under this
Agreement by giving written notice to the Sharebolder in the manner specified in
paragraph  13,  above.  Such  written  notice  shall be in any  reasonable  form
sufficient to notify  Stockholder of the  exercising of the option. Full payment
shall be due upon the  delivery  of any or all shares from  Stockholder  to APS.
Upon exercising of any options,  Stockholder  shall arrange for: (i) delivery of
existing  shares,  if any, to APS within five business days;  (ii) exercising of
any stock options with Exsorbet  within two business days; and (iii) delivery of
stock  certificates  obtained  upon exercise of stock ophons within two business
days of receipt of such stock certificates.

     16. Severability. In the event that any section or paragraph contained 
herein shall be invalid, unlawful, or unenforceable, the remainda shall be 
severable, valid, and effective as if such invalid, unlawful, or unenforceable
section or paragraph were not contained herein.

     17. Consideration. In consideration of the Agreements contained herein, APS
is providing the sum of One Hundred Dollars (S 100.00) to Stockholder. 
Stockholder accepts such amount as full and complete consideration for this 
Agreement.

     18. Complete Agreement. This Agreement is the full and complete agreement 
between the parties. There are no agreements or understandings between the 
parties which are not contained herein.

    19. Adjustments in Option. In the event that the common stock of Exsorbet is
changed into or exchanged  for a different  number or kind of shares of Exsorbet
or  other  securides  by  reason  of  merger, consolidation,  recapitalization,
reclassification, stock split, stock dividend or combination of shares, the 
option granted to APS herein shall be subject to an appropriate and equitable 
adjustment in the number and kind of shares as to which the  option,  or  
portions  thereof then  unexercised,  shall be  exercisable,  to the end that 
after such event the proportionate interest of APS shall be maintained as before
the occurrence of such event. Such adjustment in the option shall be made 
without change in the total price applicable to the unexercised portion of the 
option.

     20. APS Party Appointed  Attorney-in-Fact.  Stockholder  hereby irrevocably
appoints APS as  attorney-in-fact of  Stockholder  (such power of attomey  being
coupled  with an  interest),  with  full  authority  in the  place and stead of
Stockholder and in the name of Stockholder,  APS or otherwise, from time to time
on APS' discretion and upon the  occurrence of any default by Stockholder of any
of  Stockholder's  obligations  hereunder, to take any action and to execute any
instrument  which APS may deem necessary or advisable to accomplish the purposes
of this Agreement, including without limitation to assign and transfer the stock
which is the subject of this  Agreement to APS, or any part thereof,  absolutely
and to execute and deliver endorsements, assignments, conveyances, bills of sale
and other instruments with power to substitute one or more persons or 
corporation with like power.

     21. Binding Effect. This Option Agreement shall inure to the benefit of, 
and be  binding upon the parties hereto and  their  respective  heirs,  personal
representatives,  successors and permitted  assigns.  Stockholder may not assign
its rights or obligations hereunder without the prior express written consent of
APS in each instance.
<PAGE>

     IN WITNESS WHEREOF,  the parties have executed this  Agreement upon the day
and year first above written.

                                                  ------------------------
                                                  Stockholder
<PAGE>

                                OPTION AGREEMENT

     THIS AGREEMENT is made and entered into on this 30th day of September, 1996
by and between American  Physicians  Service Group,  Inc.  ("APS"),  a Delaware
corporation, and Kenneth McDonald, an individual ("Stockholder").

IT IS AGREED BY AND BETWEEN THE PARTIES AS FOLLOWS:

     1. Identification of Exsorbet Industries. Inc. Exsorbet Industries, Inc. is
an Idaho corporation, having its principal place of business in Jackson, 
Mississippi. The only class of common stock of Exsorbet Industries, Inc. trades 
on the Nasdaq Stock Market, Inc. SmallCap Market under the symbol "EXSO". As 
used herein, the term "Exsorbet" shall refer to Exsorbet Industries, Inc. and 
its successors.

     2. Disclosures. Stockholder has disclosed to APS that Exsorbet, through its
Board of Directors, has proposed merger into a Delaware corporation, whereby tne
Delaware corporation would be the surviving  corporation,  and changing the name
of Exsorbet to Consolidated EcoSysterns, Inc. The term "Exsorbet" shall refer to
such  surviving or successor  corporation  in the event that such merger  and/or
name change is approved.

     3. Representations. Stocknolder has made no representadons to APS 
concerning the financial condition of Exsorbet and its subsidiaries. Stockholder
has made no representations or warranties concerning the future value of 
Exsorbet stock, future earnings of Exsorbet, or any other representations
concerning Exsorbet, except as are identified herein.

     4. Stock Ownership. Stockholder is the owner of 545,388 shares of common 
stock of Exsorbet,  such shares  having  been  issued  pursuant to Rule 144 of 
the United States Securities and Exchange  Commission  ("Rule 144"). Such shares
of common stock are subject to the  provisions  of Rule 144 and all  applicable
state and federal  securities  regulations and statutes.  Stockholder will not 
transfer or assign any of such stock until expiration of this option agreement.

     5. Option  Agreements.  Stockholder  possesses  a present  right to acquire
514,469 shares of common  stock of Exsorbet  pursuant to an option  agreement or
agreements,  copies of which are attached hereto. Stockholder will not transfer,
extinguish or assign any of such options or rights  thereunder  until expiration
of this option agreement.

     6.  Option  Grant to APS.  For a period of sixty days after  September  30,
1996, Stockholder grants to APS an exclusive right to acquire 190,000 shares of
common stock of  Exsorbet, representing a portion  of  those  shares  identified
in paragraph 4, above. The acquisition price shall be $2.75 per share.

     7.  Additional  Option  Grant to APS.  For a period  of  sixty  days  after
September  30, 1996,  Stockholder  grants to APS an  exclusive  right to acquire
- -0- shares of common stock of Exsorbet,  by exercising such portion of the
options  identified in paragraph 5, above as necessary to acquire such number of
shares. The acquisition price shall be S2.75 per share.
<PAGE>

     8. Exercising of Stock Options.  Stockholder  warrants and covenants with 
APS that he will,  upon  exercising  of the option  specified in paragraph 6 or
7, above, exercise the option  agreements  with  Exsorbet,  acquiring the number
of shares being  ultimately  transferrable to APS. Such option exercise shall 
occur within two  business  days of  notification  by APS that it is  exercising
the  option specified herein.

     9. APS  Agreements.  APS: (A) understands  that the Exsorbet stock has not
been, and will not be,  registered  under the Securities Act, or under any state
securities  laws,  and are being  offered and sold in reliance  upon federal and
state  exemptdons for  transactions  not involving any public  offering;  (B) is
acquiring the Exsorbet  stock for its own account for investment  purposes,  and
not with a view to the  distribution  thereof;  (C) is a sophisticated  investor
with  knowledge  and  experience  in business  and  financial  matters,  (D) has
received or will receive certain information concerning Exsorbet and has had the
opportunity to obtain additional information as desired in order to evaluate the
merits and the risks inherent in holding the Exsorbet stock; (E) is able to bear
the economic risk and lack of liquidity  inherent in holding the Exsorbet stock;
and (F) is an  Accredited  Investor,  as defined  in  Regulation  D  promulgated
pursuant to the Secunties Act of 1933, as amended.

     10. Paragraph Headinys. Paragraph Headings, being the underlined portion at
the beginning of each section, are intended for assistance only and shall not 
alter, modify, amend, or change the meanings of the written paragraphs.

     11.  Construction.  This Agreement shall be liberally construed in favor of
granting an exclusive  option upon the terms  specified  herein.  In furtherance
thereof,  this  Agreement  shall be  construed in  accordance  with the laws and
statutes of the State of Texas, being the principal place of business of APS.

     12. Advice to Seek Legal Counsel.  Stockholder  has sought and obtained the
advice of counsel prior to entering this Agreement or has been strongly  advised
to obtain legal counsel  concerning the advisability of entering this Agreement.
In entering  this  Agreement,  Stockholder  is not relying upon any  statements,
representations,  or opinions of: (a) any attomeys or counsel for or of Exsorbet
or APS; (b) any representatives,  agents,  officers,  employees, or directors of
Exsorbet  Industries,  Inc., its  subsidiaries,  or APS; or (c) any person other
than his retained legal attorney.

     13. Notices. Notices to Stockholder shall be delivered to: Ken McDonald, KR
Industrial Service of Alabama, Hwy 195 North, Double Springs, AL 35553.

     Notices to APS shall be  delivered  to:  Duane Boyd,  Jr.,  1301 Capital of
Texas Highway, Suite C-300, Austin, TX 78746.

     All notices  shall be  delivered  by  certified  mail with a retum  receipt
requested,  by ovemight courier, or by facsimile.  All notices shall be complete
upon delivery.

     14. Cooperation. Stockholder agrees to fully cooperate with APS in the 
event that APS elects to exercise any rights under this Agreement. Stockholder 
shall take no action which would obstruct the ability of APS to exercise its 
rights under this Agreement.
<PAGE>

     15. Procedure for Exercising Option. APS may exercise its rights under this
Agreement by giving written notice to the Sharebolder in the manner specified in
paragraph  13,  above.  Such  written  notice  shall be in any  reasonable  form
sufficient to notify  Stockholder of the  exercising of the option. Full payment
shall be due upon the  delivery  of any or all shares from  Stockholder  to APS.
Upon exercising of any options,  Stockholder  shall arrange for: (i) delivery of
existing  shares,  if any, to APS within five business days;  (ii) exercising of
any stock options with Exsorbet  within two business days; and (iii) delivery of
stock  certificates  obtained  upon exercise of stock ophons within two business
days of receipt of such stock certificates.

     16. Severability. In the event that any section or paragraph contained 
herein shall be invalid, unlawful, or unenforceable, the remainder shall be 
severable, valid, and effective as if such invalid, unlawful, or unenforceable
section or paragraph were not contained herein.

     17. Consideration. In consideration of the Agreements contained herein, APS
is providing the sum of One Hundred Dollars (S 100.00) to Stockholder. 
Stockholder accepts such amount as full and complete consideration for this 
Agreement.

     18. Complete Agreement. This Agreement is the full and complete agreement 
between the parties. There are no agreements or understandings between the 
parties which are not contained herein.

    19. Adjustments in Option. In the event that the common stock of Exsorbet is
changed into or exchanged  for a different  number or kind of shares of Exsorbet
or  other  securides  by  reason  of  merger, consolidation,  recapitalization,
reclassification, stock split, stock dividend or combination of shares, the 
option granted to APS herein shall be subject to an appropriate and equitable 
adjustment in the number and kind of shares as to which the  option,  or  
portions  thereof then  unexercised,  shall be  exercisable,  to the end that 
after such event the proportionate interest of APS shall be maintained as before
the occurrence of such event. Such adjustment in the option shall be made 
without change in the total price applicable to the unexercised portion of the 
option.

     20. APS Party Appointed  Attorney-in-Fact.  Stockholder  hereby irrevocably
appoints APS as  attorney-in-fact of  Stockholder  (such power of attomey  being
coupled  with an  interest),  with  full  authority  in the  place and stead of
Stockholder and in the name of Stockholder,  APS or otherwise, from time to time
on APS' discretion and upon the  occurrence of any default by Stockholder of any
of  Stockholder's  obligations  hereunder, to take any action and to execute any
instrument  which APS may deem necessary or advisable to accomplish the purposes
of this Agreement, including without limitation to assign and transfer the stock
which is the subject of this  Agreement to APS, or any part thereof,  absolutely
and to execute and deliver endorsements, assignments, conveyances, bills of sale
and other instruments with power to substitute one or more persons or 
corporation with like power.

     21. Binding Effect. This Option Agreement shall inure to the benefit of, 
and be  binding upon the parties hereto and  their  respective  heirs,  personal
representatives,  successors and permitted  assigns.  Stockholder may not assign
its rights or obligations hereunder without the prior express written consent of
APS in each instance.
<PAGE>

     IN WITNESS WHEREOF,  the parties have executed this  Agreement upon the day
and year first above written.

                                                  ------------------------
                                                  Stockholder
<PAGE>

                                OPTION AGREEMENT

     THIS AGREEMENT is made and entered into on this 30th day of September, 1996
by and between American  Physicians  Service Group,  Inc.  ("APS"),  a Delaware
corporation, and Gary Cotten, an individual ("Stockholder").

IT IS AGREED BY AND BETWEEN THE PARTIES AS FOLLOWS:

     1. Identification of Exsorbet Industries. Inc. Exsorbet Industries, Inc. is
an Idaho corporation, having its principal place of business in Jackson, 
Mississippi. The only class of common stock of Exsorbet Industries, Inc. trades 
on the Nasdaq Stock Market, Inc. SmallCap Market under the symbol "EXSO". As 
used herein, the term "Exsorbet" shall refer to Exsorbet Industries, Inc. and 
its successors.

     2. Disclosures. Stockholder has disclosed to APS that Exsorbet, through its
Board of Directors, has proposed merger into a Delaware corporation, whereby tne
Delaware corporation would be the surviving  corporation,  and changing the name
of Exsorbet to Consolidated EcoSysterns, Inc. The term "Exsorbet" shall refer to
such  surviving or successor  corporation  in the event that such merger  and/or
name change is approved.

     3. Representations. Stocknolder has made no representadons to APS 
concerning the financial condition of Exsorbet and its subsidiaries. Stockholder
has made no representations or warranties concerning the future value of 
Exsorbet stock, future earnings of Exsorbet, or any other representations
concerning Exsorbet, except as are identified herein.

     4. Stock Ownership. Stockholder is the owner of -0- shares of common 
stock of Exsorbet,  such shares  having  been  issued  pursuant to Rule 144 of 
the United States Securities and Exchange  Commission  ("Rule 144"). Such shares
of common stock are subject to the  provisions  of Rule 144 and all  applicable
state and federal  securities  regulations and statutes.  Stockholder will not 
transfer or assign any of such stock until expiration of this option agreement.

     5. Option  Agreements.  Stockholder  possesses  a present  right to acquire
100,000 shares of common  stock of Exsorbet  pursuant to an option  agreement or
agreements,  copies of which are attached hereto. Stockholder will not transfer,
extinguish or assign any of such options or rights  thereunder  until expiration
of this option agreement.

     6.  Option  Grant to APS.  For a period of sixty days after  September  30,
1996, Stockholder grants to APS an exclusive right to acquire -0- shares of
common stock of  Exsorbet, representing a portion  of  those  shares  identified
in paragraph 4, above. The acquisition price shall be $2.75 per share.

     7.  Additional  Option  Grant to APS.  For a period  of  sixty  days  after
September  30, 1996,  Stockholder  grants to APS an  exclusive  right to acquire
100,000 shares of common stock of Exsorbet,  by exercising such portion of the
options  identified in paragraph 5, above as necessary to acquire such number of
shares. The acquisition price shall be S2.75 per share.
<PAGE>

     8. Exercising of Stock Options.  Stockholder  warrants and covenants with 
APS that he will,  upon  exercising  of the option  specified in paragraph 6 or
7, above, exercise the option  agreements  with  Exsorbet,  acquiring the number
of shares being  ultimately  transferrable to APS. Such option exercise shall 
occur within two  business  days of  notification  by APS that it is  exercising
the  option specified herein.

     9. APS  Agreements.  APS: (A) understands  that the Exsorbet stock has not
been, and will not be,  registered  under the Securities Act, or under any state
securities  laws,  and are being  offered and sold in reliance  upon federal and
state  exemptdons for  transactions  not involving any public  offering;  (B) is
acquiring the Exsorbet  stock for its own account for investment  purposes,  and
not with a view to the  distribution  thereof;  (C) is a sophisticated  investor
with  knowledge  and  experience  in business  and  financial  matters,  (D) has
received or will receive certain information concerning Exsorbet and has had the
opportunity to obtain additional information as desired in order to evaluate the
merits and the risks inherent in holding the Exsorbet stock; (E) is able to bear
the economic risk and lack of liquidity  inherent in holding the Exsorbet stock;
and (F) is an  Accredited  Investor,  as defined  in  Regulation  D  promulgated
pursuant to the Secunties Act of 1933, as amended.

     10. Paragraph Headinys. Paragraph Headings, being the underlined portion at
the beginning of each section, are intended for assistance only and shall not 
alter, modify, amend, or change the meanings of the written paragraphs.

     11.  Construction.  This Agreement shall be liberally construed in favor of
granting an exclusive  option upon the terms  specified  herein.  In furtherance
thereof,  this  Agreement  shall be  construed in  accordance  with the laws and
statutes of the State of Texas, being the principal place of business of APS.

     12. Advice to Seek Legal Counsel.  Stockholder  has sought and obtained the
advice of counsel prior to entering this Agreement or has been strongly  advised
to obtain legal counsel  concerning the advisability of entering this Agreement.
In entering  this  Agreement,  Stockholder  is not relying upon any  statements,
representations,  or opinions of: (a) any attomeys or counsel for or of Exsorbet
or APS; (b) any representatives,  agents,  officers,  employees, or directors of
Exsorbet  Industries,  Inc., its  subsidiaries,  or APS; or (c) any person other
than his retained legal attorney.

     13. Notices. Notices to Stockholder shall be delivered to: Gary Cotten, 
2406 Oakhurst, Ada, OK 74820.

     Notices to APS shall be  delivered  to:  Duane Boyd,  Jr.,  1301 Capital of
Texas Highway, Suite C-300, Austin, TX 78746.

     All notices  shall be  delivered  by  certified  mail with a retum  receipt
requested,  by ovemight courier, or by facsimile.  All notices shall be complete
upon delivery.

     14. Cooperation. Stockholder agrees to fully cooperate with APS in the 
event that APS elects to exercise any rights under this Agreement. Stockholder 
shall take no action which would obstruct the ability of APS to exercise its 
rights under this Agreement.
<PAGE>

     15. Procedure for Exercising Option. APS may exercise its rights under this
Agreement by giving written notice to the Sharebolder in the manner specified in
paragraph  13,  above.  Such  written  notice  shall be in any  reasonable  form
sufficient to notify  Stockholder of the  exercising of the option. Full payment
shall be due upon the  delivery  of any or all shares from  Stockholder  to APS.
Upon exercising of any options,  Stockholder  shall arrange for: (i) delivery of
existing  shares,  if any, to APS within five business days;  (ii) exercising of
any stock options with Exsorbet  within two business days; and (iii) delivery of
stock  certificates  obtained  upon exercise of stock ophons within two business
days of receipt of such stock certificates.

     16. Severability. In the event that any section or paragraph contained 
herein shall be invalid, unlawful, or unenforceable, the remainder shall be 
severable, valid, and effective as if such invalid, unlawful, or unenforceable
section or paragraph were not contained herein.

     17. Consideration. In consideration of the Agreements contained herein, APS
is providing the sum of One Hundred Dollars (S 100.00) to Stockholder. 
Stockholder accepts such amount as full and complete consideration for this 
Agreement.

     18. Complete Agreement. This Agreement is the full and complete agreement 
between the parties. There are no agreements or understandings between the 
parties which are not contained herein.

    19. Adjustments in Option. In the event that the common stock of Exsorbet is
changed into or exchanged  for a different  number or kind of shares of Exsorbet
or  other  securides  by  reason  of  merger, consolidation,  recapitalization,
reclassification, stock split, stock dividend or combination of shares, the 
option granted to APS herein shall be subject to an appropriate and equitable 
adjustment in the number and kind of shares as to which the  option,  or  
portions  thereof then  unexercised,  shall be  exercisable,  to the end that 
after such event the proportionate interest of APS shall be maintained as before
the occurrence of such event. Such adjustment in the option shall be made 
without change in the total price applicable to the unexercised portion of the 
option.

     20. APS Party Appointed  Attorney-in-Fact.  Stockholder  hereby irrevocably
appoints APS as  attorney-in-fact of  Stockholder  (such power of attomey  being
coupled  with an  interest),  with  full  authority  in the  place and stead of
Stockholder and in the name of Stockholder,  APS or otherwise, from time to time
on APS' discretion and upon the  occurrence of any default by Stockholder of any
of  Stockholder's  obligations  hereunder, to take any action and to execute any
instrument  which APS may deem necessary or advisable to accomplish the purposes
of this Agreement, including without limitation to assign and transfer the stock
which is the subject of this  Agreement to APS, or any part thereof,  absolutely
and to execute and deliver endorsements, assignments, conveyances, bills of sale
and other instruments with power to substitute one or more persons or 
corporation with like power.

     21. Binding Effect. This Option Agreement shall inure to the benefit of, 
and be  binding upon the parties hereto and  their  respective  heirs,  personal
representatives,  successors and permitted  assigns.  Stockholder may not assign
its rights or obligations hereunder without the prior express written consent of
APS in each instance.
<PAGE>

     IN WITNESS WHEREOF,  the parties have executed this  Agreement upon the day
and year first above written.

                                                  ------------------------
                                                  Stockholder
<PAGE>
                               
                                OPTION AGREEMENT

     THIS AGREEMENT is made and entered into on this 30th day of September, 1996
by and between American  Physicians  Service Group,  Inc.  ("APS"),  a Delaware
corporation, and James J. Conners, an individual ("Stockholder").

IT IS AGREED BY AND BETWEEN THE PARTIES AS FOLLOWS:

     1. Identification of Exsorbet Industries. Inc. Exsorbet Industries, Inc. is
an Idaho corporation, having its principal place of business in Jackson, 
Mississippi. The only class of common stock of Exsorbet Industries, Inc. trades 
on the Nasdaq Stock Market, Inc. SmallCap Market under the symbol "EXSO". As 
used herein, the term "Exsorbet" shall refer to Exsorbet Industries, Inc. and 
its successors.

     2. Disclosures. Stockholder has disclosed to APS that Exsorbet, through its
Board of Directors, has proposed merger into a Delaware corporation, whereby tne
Delaware corporation would be the surviving  corporation,  and changing the name
of Exsorbet to Consolidated EcoSysterns, Inc. The term "Exsorbet" shall refer to
such  surviving or successor  corporation  in the event that such merger  and/or
name change is approved.

     3. Representations. Stocknolder has made no representadons to APS 
concerning the financial condition of Exsorbet and its subsidiaries. Stockholder
has made no representations or warranties concerning the future value of 
Exsorbet stock, future earnings of Exsorbet, or any other representations
concerning Exsorbet, except as are identified herein.

     4. Stock Ownership. Stockholder is the owner of 120,000 shares of common 
stock of Exsorbet,  such shares  having  been  issued  pursuant to Rule 144 of 
the United States Securities and Exchange  Commission  ("Rule 144"). Such shares
of common stock are subject to the  provisions  of Rule 144 and all  applicable
state and federal  securities  regulations and statutes.  Stockholder will not 
transfer or assign any of such stock until expiration of this option agreement.

     5. Option  Agreements.  Stockholder  possesses  a present  right to acquire
125,000 shares of common  stock of Exsorbet  pursuant to an option  agreement or
agreements,  copies of which are attached hereto. Stockholder will not transfer,
extinguish or assign any of such options or rights  thereunder  until expiration
of this option agreement.

     6.  Option  Grant to APS.  For a period of sixty days after  September  30,
1996, Stockholder grants to APS an exclusive right to acquire 120,000 shares of
common stock of  Exsorbet, representing a portion  of  those  shares  identified
in paragraph 4, above. The acquisition price shall be $2.75 per share.

     7.  Additional  Option  Grant to APS.  For a period  of  sixty  days  after
September  30, 1996,  Stockholder  grants to APS an  exclusive  right to acquire
2,500 shares of common stock of Exsorbet,  by exercising such portion of the
options  identified in paragraph 5, above as necessary to acquire such number of
shares. The acquisition price shall be S2.75 per share.
<PAGE>

     8. Exercising of Stock Options.  Stockholder  warrants and covenants with 
APS that he will,  upon  exercising  of the option  specified in paragraph 6 or
7, above, exercise the option  agreements  with  Exsorbet,  acquiring the number
of shares being  ultimately  transferrable to APS. Such option exercise shall 
occur within two  business  days of  notification  by APS that it is  exercising
the  option specified herein.

     9. APS  Agreements.  APS: (A) understands  that the Exsorbet stock has not
been, and will not be,  registered  under the Securities Act, or under any state
securities  laws,  and are being  offered and sold in reliance  upon federal and
state  exemptdons for  transactions  not involving any public  offering;  (B) is
acquiring the Exsorbet  stock for its own account for investment  purposes,  and
not with a view to the  distribution  thereof;  (C) is a sophisticated  investor
with  knowledge  and  experience  in business  and  financial  matters,  (D) has
received or will receive certain information concerning Exsorbet and has had the
opportunity to obtain additional information as desired in order to evaluate the
merits and the risks inherent in holding the Exsorbet stock; (E) is able to bear
the economic risk and lack of liquidity  inherent in holding the Exsorbet stock;
and (F) is an  Accredited  Investor,  as defined  in  Regulation  D  promulgated
pursuant to the Secunties Act of 1933, as amended.

     10. Paragraph Headinys. Paragraph Headings, being the underlined portion at
the beginning of each section, are intended for assistance only and shall not 
alter, modify, amend, or change the meanings of the written paragraphs.

     11.  Construction.  This Agreement shall be liberally construed in favor of
granting an exclusive  option upon the terms  specified  herein.  In furtherance
thereof,  this  Agreement  shall be  construed in  accordance  with the laws and
statutes of the State of Texas, being the principal place of business of APS.

     12. Advice to Seek Legal Counsel.  Stockholder  has sought and obtained the
advice of counsel prior to entering this Agreement or has been strongly  advised
to obtain legal counsel  concerning the advisability of entering this Agreement.
In entering  this  Agreement,  Stockholder  is not relying upon any  statements,
representations,  or opinions of: (a) any attomeys or counsel for or of Exsorbet
or APS; (b) any representatives,  agents,  officers,  employees, or directors of
Exsorbet  Industries,  Inc., its  subsidiaries,  or APS; or (c) any person other
than his retained legal attorney.

     13. Notices. Notices to Stockholder shall be delivered to: 10539 Co. Rd. 1
Fairhope, AL  36532

     Notices to APS shall be  delivered  to:  Duane Boyd,  Jr.,  1301 Capital of
Texas Highway, Suite C-300, Austin, TX 78746.

     All notices  shall be  delivered  by  certified  mail with a retum  receipt
requested,  by ovemight courier, or by facsimile.  All notices shall be complete
upon delivery.

     14. Cooperation. Stockholder agrees to fully cooperate with APS in the 
event that APS elects to exercise any rights under this Agreement. Stockholder 
shall take no action which would obstruct the ability of APS to exercise its 
rights under this Agreement.
<PAGE>

     15. Procedure for Exercising Option. APS may exercise its rights under this
Agreement by giving written notice to the Sharebolder in the manner specified in
paragraph  13,  above.  Such  written  notice  shall be in any  reasonable  form
sufficient to notify  Stockholder of the  exercising of the option. Full payment
shall be due upon the  delivery  of any or all shares from  Stockholder  to APS.
Upon exercising of any options,  Stockholder  shall arrange for: (i) delivery of
existing  shares,  if any, to APS within five business days;  (ii) exercising of
any stock options with Exsorbet  within two business days; and (iii) delivery of
stock  certificates  obtained  upon exercise of stock ophons within two business
days of receipt of such stock certificates.

     16. Severability. In the event that any section or paragraph contained 
herein shall be invalid, unlawful, or unenforceable, the remainder shall be 
severable, valid, and effective as if such invalid, unlawful, or unenforceable
section or paragraph were not contained herein.

     17. Consideration. In consideration of the Agreements contained herein, APS
is providing the sum of One Hundred Dollars (S 100.00) to Stockholder. 
Stockholder accepts such amount as full and complete consideration for this 
Agreement.

     18. Complete Agreement. This Agreement is the full and complete agreement 
between the parties. There are no agreements or understandings between the 
parties which are not contained herein.

    19. Adjustments in Option. In the event that the common stock of Exsorbet is
changed into or exchanged  for a different  number or kind of shares of Exsorbet
or  other  securides  by  reason  of  merger, consolidation,  recapitalization,
reclassification, stock split, stock dividend or combination of shares, the 
option granted to APS herein shall be subject to an appropriate and equitable 
adjustment in the number and kind of shares as to which the  option,  or  
portions  thereof then  unexercised,  shall be  exercisable,  to the end that 
after such event the proportionate interest of APS shall be maintained as before
the occurrence of such event. Such adjustment in the option shall be made 
without change in the total price applicable to the unexercised portion of the 
option.

     20. APS Party Appointed  Attorney-in-Fact.  Stockholder  hereby irrevocably
appoints APS as  attorney-in-fact of  Stockholder  (such power of attomey  being
coupled  with an  interest),  with  full  authority  in the  place and stead of
Stockholder and in the name of Stockholder,  APS or otherwise, from time to time
on APS' discretion and upon the  occurrence of any default by Stockholder of any
of  Stockholder's  obligations  hereunder, to take any action and to execute any
instrument  which APS may deem necessary or advisable to accomplish the purposes
of this Agreement, including without limitation to assign and transfer the stock
which is the subject of this  Agreement to APS, or any part thereof,  absolutely
and to execute and deliver endorsements, assignments, conveyances, bills of sale
and other instruments with power to substitute one or more persons or 
corporation with like power.

     21. Binding Effect. This Option Agreement shall inure to the benefit of, 
and be  binding upon the parties hereto and  their  respective  heirs,  personal
representatives,  successors and permitted  assigns.  Stockholder may not assign
its rights or obligations hereunder without the prior express written consent of
APS in each instance.
<PAGE>

     IN WITNESS WHEREOF,  the parties have executed this  Agreement upon the day
and year first above written.

                                                  ------------------------
                                                  Stockholder
<PAGE>
                               

                                OPTION AGREEMENT

     THIS AGREEMENT is made and entered into on this 30th day of September, 1996
by and between American  Physicians  Service Group,  Inc.  ("APS"),  a Delaware
corporation, and Robert Vick, an individual ("Stockholder").

IT IS AGREED BY AND BETWEEN THE PARTIES AS FOLLOWS:

     1. Identification of Exsorbet Industries. Inc. Exsorbet Industries, Inc. is
an Idaho corporation, having its principal place of business in Jackson, 
Mississippi. The only class of common stock of Exsorbet Industries, Inc. trades 
on the Nasdaq Stock Market, Inc. SmallCap Market under the symbol "EXSO". As 
used herein, the term "Exsorbet" shall refer to Exsorbet Industries, Inc. and 
its successors.

     2. Disclosures. Stockholder has disclosed to APS that Exsorbet, through its
Board of Directors, has proposed merger into a Delaware corporation, whereby tne
Delaware corporation would be the surviving  corporation,  and changing the name
of Exsorbet to Consolidated EcoSysterns, Inc. The term "Exsorbet" shall refer to
such  surviving or successor  corporation  in the event that such merger  and/or
name change is approved.

     3. Representations. Stocknolder has made no representadons to APS 
concerning the financial condition of Exsorbet and its subsidiaries. Stockholder
has made no representations or warranties concerning the future value of 
Exsorbet stock, future earnings of Exsorbet, or any other representations
concerning Exsorbet, except as are identified herein.

     4. Stock Ownership. Stockholder is the owner of 120,000 shares of common 
stock of Exsorbet,  such shares  having  been  issued  pursuant to Rule 144 of 
the United States Securities and Exchange  Commission  ("Rule 144"). Such shares
of common stock are subject to the  provisions  of Rule 144 and all  applicable
state and federal  securities  regulations and statutes.  Stockholder will not 
transfer or assign any of such stock until expiration of this option agreement.

     5. Option  Agreements.  Stockholder  possesses  a present  right to acquire
125,000 shares of common  stock of Exsorbet  pursuant to an option  agreement or
agreements,  copies of which are attached hereto. Stockholder will not transfer,
extinguish or assign any of such options or rights  thereunder  until expiration
of this option agreement.

     6.  Option  Grant to APS.  For a period of sixty days after  September  30,
1996, Stockholder grants to APS an exclusive right to acquire 120,000 shares of
common stock of  Exsorbet, representing a portion  of  those  shares  identified
in paragraph 4, above. The acquisition price shall be $2.75 per share.

     7.  Additional  Option  Grant to APS.  For a period  of  sixty  days  after
September  30, 1996,  Stockholder  grants to APS an  exclusive  right to acquire
2,500 shares of common stock of Exsorbet,  by exercising such portion of the
options  identified in paragraph 5, above as necessary to acquire such number of
shares. The acquisition price shall be S2.75 per share.
<PAGE>

     8. Exercising of Stock Options.  Stockholder  warrants and covenants with 
APS that he will,  upon  exercising  of the option  specified in paragraph 6 or
7, above, exercise the option  agreements  with  Exsorbet,  acquiring the number
of shares being  ultimately  transferrable to APS. Such option exercise shall 
occur within two  business  days of  notification  by APS that it is  exercising
the  option specified herein.

     9. APS  Agreements.  APS: (A) understands  that the Exsorbet stock has not
been, and will not be,  registered  under the Securities Act, or under any state
securities  laws,  and are being  offered and sold in reliance  upon federal and
state  exemptdons for  transactions  not involving any public  offering;  (B) is
acquiring the Exsorbet  stock for its own account for investment  purposes,  and
not with a view to the  distribution  thereof;  (C) is a sophisticated  investor
with  knowledge  and  experience  in business  and  financial  matters,  (D) has
received or will receive certain information concerning Exsorbet and has had the
opportunity to obtain additional information as desired in order to evaluate the
merits and the risks inherent in holding the Exsorbet stock; (E) is able to bear
the economic risk and lack of liquidity  inherent in holding the Exsorbet stock;
and (F) is an  Accredited  Investor,  as defined  in  Regulation  D  promulgated
pursuant to the Secunties Act of 1933, as amended.

     10. Paragraph Headinys. Paragraph Headings, being the underlined portion at
the beginning of each section, are intended for assistance only and shall not 
alter, modify, amend, or change the meanings of the written paragraphs.

     11.  Construction.  This Agreement shall be liberally construed in favor of
granting an exclusive  option upon the terms  specified  herein.  In furtherance
thereof,  this  Agreement  shall be  construed in  accordance  with the laws and
statutes of the State of Texas, being the principal place of business of APS.

     12. Advice to Seek Legal Counsel.  Stockholder  has sought and obtained the
advice of counsel prior to entering this Agreement or has been strongly  advised
to obtain legal counsel  concerning the advisability of entering this Agreement.
In entering  this  Agreement,  Stockholder  is not relying upon any  statements,
representations,  or opinions of: (a) any attomeys or counsel for or of Exsorbet
or APS; (b) any representatives,  agents,  officers,  employees, or directors of
Exsorbet  Industries,  Inc., its  subsidiaries,  or APS; or (c) any person other
than his retained legal attorney.

     13. Notices. Notices to Stockholder shall be delivered to: _____________

     Notices to APS shall be  delivered  to:  Duane Boyd,  Jr.,  1301 Capital of
Texas Highway, Suite C-300, Austin, TX 78746.

     All notices  shall be  delivered  by  certified  mail with a retum  receipt
requested,  by ovemight courier, or by facsimile.  All notices shall be complete
upon delivery.

     14. Cooperation. Stockholder agrees to fully cooperate with APS in the 
event that APS elects to exercise any rights under this Agreement. Stockholder 
shall take no action which would obstruct the ability of APS to exercise its 
rights under this Agreement.
<PAGE>

     15. Procedure for Exercising Option. APS may exercise its rights under this
Agreement by giving written notice to the Sharebolder in the manner specified in
paragraph  13,  above.  Such  written  notice  shall be in any  reasonable  form
sufficient to notify  Stockholder of the  exercising of the option. Full payment
shall be due upon the  delivery  of any or all shares from  Stockholder  to APS.
Upon exercising of any options,  Stockholder  shall arrange for: (i) delivery of
existing  shares,  if any, to APS within five business days;  (ii) exercising of
any stock options with Exsorbet  within two business days; and (iii) delivery of
stock  certificates  obtained  upon exercise of stock ophons within two business
days of receipt of such stock certificates.

     16. Severability. In the event that any section or paragraph contained 
herein shall be invalid, unlawful, or unenforceable, the remainder shall be 
severable, valid, and effective as if such invalid, unlawful, or unenforceable
section or paragraph were not contained herein.

     17. Consideration. In consideration of the Agreements contained herein, APS
is providing the sum of One Hundred Dollars (S 100.00) to Stockholder. 
Stockholder accepts such amount as full and complete consideration for this 
Agreement.

     18. Complete Agreement. This Agreement is the full and complete agreement 
between the parties. There are no agreements or understandings between the 
parties which are not contained herein.

    19. Adjustments in Option. In the event that the common stock of Exsorbet is
changed into or exchanged  for a different  number or kind of shares of Exsorbet
or  other  securides  by  reason  of  merger, consolidation,  recapitalization,
reclassification, stock split, stock dividend or combination of shares, the 
option granted to APS herein shall be subject to an appropriate and equitable 
adjustment in the number and kind of shares as to which the  option,  or  
portions  thereof then  unexercised,  shall be  exercisable,  to the end that 
after such event the proportionate interest of APS shall be maintained as before
the occurrence of such event. Such adjustment in the option shall be made 
without change in the total price applicable to the unexercised portion of the 
option.

     20. APS Party Appointed  Attorney-in-Fact.  Stockholder  hereby irrevocably
appoints APS as  attorney-in-fact of  Stockholder  (such power of attomey  being
coupled  with an  interest),  with  full  authority  in the  place and stead of
Stockholder and in the name of Stockholder,  APS or otherwise, from time to time
on APS' discretion and upon the  occurrence of any default by Stockholder of any
of  Stockholder's  obligations  hereunder, to take any action and to execute any
instrument  which APS may deem necessary or advisable to accomplish the purposes
of this Agreement, including without limitation to assign and transfer the stock
which is the subject of this  Agreement to APS, or any part thereof,  absolutely
and to execute and deliver endorsements, assignments, conveyances, bills of sale
and other instruments with power to substitute one or more persons or 
corporation with like power.

     21. Binding Effect. This Option Agreement shall inure to the benefit of, 
and be  binding upon the parties hereto and  their  respective  heirs,  personal
representatives,  successors and permitted  assigns.  Stockholder may not assign
its rights or obligations hereunder without the prior express written consent of
APS in each instance.
<PAGE>

     IN WITNESS WHEREOF,  the parties have executed this  Agreement upon the day
and year first above written.

                                                  ------------------------
                                                  Stockholder
<PAGE>
                               

                                OPTION AGREEMENT

     THIS AGREEMENT is made and entered into on this 30th day of September, 1996
by and between American  Physicians  Service Group,  Inc.  ("APS"),  a Delaware
corporation, and Sam Sexton III, an individual ("Stockholder").

IT IS AGREED BY AND BETWEEN THE PARTIES AS FOLLOWS:

     1. Identification of Exsorbet Industries. Inc. Exsorbet Industries, Inc. is
an Idaho corporation, having its principal place of business in Jackson, 
Mississippi. The only class of common stock of Exsorbet Industries, Inc. trades 
on the Nasdaq Stock Market, Inc. SmallCap Market under the symbol "EXSO". As 
used herein, the term "Exsorbet" shall refer to Exsorbet Industries, Inc. and 
its successors.

     2. Disclosures. Stockholder has disclosed to APS that Exsorbet, through its
Board of Directors, has proposed merger into a Delaware corporation, whereby tne
Delaware corporation would be the surviving  corporation,  and changing the name
of Exsorbet to Consolidated EcoSysterns, Inc. The term "Exsorbet" shall refer to
such  surviving or successor  corporation  in the event that such merger  and/or
name change is approved.

     3. Representations. Stocknolder has made no representadons to APS 
concerning the financial condition of Exsorbet and its subsidiaries. Stockholder
has made no representations or warranties concerning the future value of 
Exsorbet stock, future earnings of Exsorbet, or any other representations
concerning Exsorbet, except as are identified herein.

     4. Stock Ownership. Stocknolder is the owner of 5,000 shares of common 
stock of Exsorbet,  such shares  having  been  issued  pursuant to Rule 144 of 
the United States Securities and Exchange  Commission  ("Rule 144"). Such shares
of common stock are subject to the  provisions  of Rule 144 and all  applicable
state and federal  securities  regulations and statutes.  Stockholder will not 
transfer or assign any of such stock until expiration of this option agreement.

     5. Option  Agreements.  Stockholder  possesses  a present  right to acquire
295,000 shares of common  stock of Exsorbet  pursuant to an option  agreement or
agreements,  copies of which are attached hereto. Stockholder will not transfer,
extinguish or assign any of such options or rights  thereunder  until expiration
of this option agreement.

     6.  Option  Grant to APS.  For a period of sixty days after  September  30,
1996, Stockholder grants to APS an exclusive right to acquire -0- shares of
common stock of  Exsorbet, representing a portion  of  those  shares  identified
in paragraph 4, above. The acquisition price shall be $2.75 per share.

     7.  Additional  Option  Grant to APS.  For a period  of  sixty  days  after
September  30, 1996,  Stockholder  grants to APS an  exclusive  right to acquire
200,000 shares of common stock of Exsorbet,  by exercising such portion of the
options  identified in paragraph 5, above as necessary to acquire such number of
shares. The acquisition price shall be S2.75 per share.
<PAGE>

     8. Exercising of Stock Options.  Stockholder  warrants and covenants with 
APS that he will,  upon  exercising  of the option  specified in paragraph 6 or
7, above, exercise the option  agreements  with  Exsorbet,  acquiring the number
of shares being  ultimately  transferrable to APS. Such option exercise shall 
occur within two  business  days of  notification  by APS that it is  exercising
the  option specified herein.

     9. APS  Agreements.  APS: (A) understands  that the Exsorbet stock has not
been, and will not be,  registered  under the Securities Act, or under any state
securities  laws,  and are being  offered and sold in reliance  upon federal and
state  exemptdons for  transactions  not involving any public  offering;  (B) is
acquiring the Exsorbet  stock for its own account for investment  purposes,  and
not with a view to the  distribution  thereof;  (C) is a sophisticated  investor
with  knowledge  and  experience  in business  and  financial  matters,  (D) has
received or will receive certain information concerning Exsorbet and has had the
opportunity to obtain additional information as desired in order to evaluate the
merits and the risks inherent in holding the Exsorbet stock; (E) is able to bear
the economic risk and lack of liquidity  inherent in holding the Exsorbet stock;
and (F) is an  Accredited  Investor,  as defined  in  Regulation  D  promulgated
pursuant to the Secunties Act of 1933, as amended.

     10. Paragraph Headings. Paragraph Headings, being the underlined portion at
the beginning of each section, are intended for assistance only and shall not 
alter, modify, amend, or change the meanings of the written paragraphs.

     11.  Construction.  This Agreement shall be liberally construed in favor of
granting an exclusive  option upon the terms  specified  herein.  In furtherance
thereof,  this  Agreement  shall be  construed in  accordance  with the laws and
statutes of the State of Texas, being the principal place of business of APS.

     12. Advice to Seek Legal Counsel.  Stockholder  has sought and obtained the
advice of counsel prior to entering this Agreement or has been strongly  advised
to obtain legal counsel  concerning the advisability of entering this Agreement.
In entering  this  Agreement,  Stockholder  is not relying upon any  statements,
representations,  or opinions of: (a) any attomeys or counsel for or of Exsorbet
or APS; (b) any representatives,  agents,  officers,  employees, or directors of
Exsorbet  Industries,  Inc., its  subsidiaries,  or APS; or (c) any person other
than his retained legal attorney.

     13. Notices. Notices to Stockholder shall be delivered to: 1401 S. Waldron
#201, Fort Smith, Ark.  72903

     Notices to APS shall be  delivered  to:  Duane Boyd,  Jr.,  1301 Capital of
Texas Highway, Suite C-300, Austin, TX 78746.

     All notices  shall be  delivered  by  certified  mail with a retum  receipt
requested,  by ovemight courier, or by facsimile.  All notices shall be complete
upon delivery.

     14. Cooperation. Stockholder agrees to fully cooperate with APS in the 
event that APS elects to exercise any rights under this Agreement. Stockholder 
shall take no action which would obstruct the ability of APS to exercise its 
rights under this Agreement.
<PAGE>

     15. Procedure for Exercising Option. APS may exercise its rights under this
Agreement by giving written notice to the Sharebolder in the manner specified in
paragraph  13,  above.  Such  written  notice  shall be in any  reasonable  form
sufficient to notify  Stockholder of the  exercising of the option. Full payment
shall be due upon the  delivery  of any or all shares from  Stockholder  to APS.
Upon exercising of any options,  Stockholder  shall arrange for: (i) delivery of
existing  shares,  if any, to APS within five business days;  (ii) exercising of
any stock options with Exsorbet  within two business days; and (iii) delivery of
stock  certificates  obtained  upon exercise of stock ophons within two business
days of receipt of such stock certificates.

     16. Severability. In the event that any secdon or paragraph contained 
herein shall be invalid, unlawful, or unenforceable, the remainder shall be 
severable, valid, and effective as if such invalid, unlawful, or unenforceable
section or paragraph were not contained herein.

     17. Consideration. In consideration of the Agreements contained herein, APS
is providing the sum of One Hundred Dollars (S 100.00) to Stockholder. 
Stockholder accepts such amount as full and complete consideration for this 
Agreement.

     18. Complete Agreement. This Agreement is the full and complete agreement 
between the parties. There are no agreements or understandings between the 
parties which are not contained herein.

    19. Adjustments in Option. In the event that the common stock of Exsorbet is
changed into or exchanged  for a different  number or kind of shares of Exsorbet
or  other  securides  by  reason  of  merger, consolidation,  recapitalization,
reclassification, stock split, stock dividend or combination of shares, the 
option granted to APS herein shall be subject to an appropriate and equitable 
adjustment in the number and kind of shares as to which the  option,  or  
portions  thereof then  unexercised,  shall be  exercisable,  to the end that 
after such event the proportionate interest of APS shall be maintained as before
the occurrence of such event. Such adjustment in the option shall be made 
without change in the total price applicable to the unexercised portion of the 
option.

     20. APS Party Appointed  Attorney-in-Fact.  Stockholder  hereby irrevocably
appoints APS as  attorney-in-fact of  Stockholder  (such power of attomey  being
coupled  with an  interest),  with  full  authority  in the  place and stead of
Stockholder and in the name of Stockholder,  APS or otherwise, from time to time
on APS' discretion and upon the  occurrence of any default by Stockholder of any
of  Stockholder's  obligations  hereunder, to take any action and to execute any
instrument  which APS may deem necessary or advisable to accomplish the purposes
of this Agreement, including without limitation to assign and transfer the stock
which is the subject of this  Agreement to APS, or any part thereof,  absolutely
and to execute and deliver endorsements, assignments, conveyances, bills of sale
and other instruments with power to substitute one or more persons or 
corporation with like power.

     21. Binding Effect. This Option Agreement shall inure to the benefit of, 
and be  binding upon the parties hereto and  their  respective  heirs,  personal
representatives,  successors and permitted  assigns.  Stockholder may not assign
its rights or obligations hereunder without the prior express written consent of
APS in each instance.
<PAGE>

     IN WITNESS WHEREOF,  the parties have executed this  Agreement upon the day
and year first above written.

                                                  ------------------------
                                                  Stockholder
<PAGE>
                               

                                OPTION AGREEMENT

     THIS AGREEMENT is made and entered into on this 30th day of September, 1996
by and between American  Physicians  Service Group,  Inc.  ("APS"),  a Delaware
corporation, and Charles E. Chunn, Jr., an individual ("Stockholder").

IT IS AGREED BY AND BETWEEN THE PARTIES AS FOLLOWS:

     1. Identification of Exsorbet Industries. Inc. Exsorbet Industries, Inc. is
an Idaho corporation, having its principal place of business in Jackson, 
Mississippi. The only class of common stock of Exsorbet Industries, Inc. trades 
on the Nasdaq Stock Market, Inc. SmallCap Market under the symbol "EXSO". As 
used herein, the term "Exsorbet" shall refer to Exsorbet Industries, Inc. and 
its successors.

     2. Disclosures. Stockholder has disclosed to APS that Exsorbet, through its
Board of Directors, has proposed merger into a Delaware corporation, whereby tne
Delaware corporation would be the surviving  corporation,  and changing the name
of Exsorbet to Consolidated EcoSysterns, Inc. The term "Exsorbet" shall refer to
such  surviving or successor  corporation  in the event that such merger  and/or
name change is approved.

     3. Representations. Stocknolder has made no representadons to APS 
concerning the financial condition of Exsorbet and its subsidiaries. Stockholder
has made no representations or warranties concerning the future value of 
Exsorbet stock, future earnings of Exsorbet, or any other representations
concerning Exsorbet, except as are identified herein.

     4. Stock Ownership. Stockholder is the owner of 85,000 shares of common 
stock of Exsorbet,  such shares  having  been  issued  pursuant to Rule 144 of 
the United States Securities and Exchange  Commission  ("Rule 144"). Such shares
of common stock are subject to the  provisions  of Rule 144 and all  applicable
state and federal  securities  regulations and statutes.  Stockholder will not 
transfer or assign any of such stock until expiration of this option agreement.

     5. Option  Agreements.  Stockholder  possesses  a present  right to acquire
275,000 shares of common  stock of Exsorbet  pursuant to an option  agreement or
agreements,  copies of which are attached hereto. Stockholder will not transfer,
extinguish or assign any of such options or rights  thereunder  until expiration
of this option agreement.

     6.  Option  Grant to APS.  For a period of sixty days after  September  30,
1996, Stockholder grants to APS an exclusive right to acquire -0- shares of
common stock of  Exsorbet, representing a portion  of  those  shares  identified
in paragraph 4, above. The acquisition price shall be $2.75 per share.

     7.  Additional  Option  Grant to APS.  For a period  of  sixty  days  after
September  30, 1996,  Stockholder  grants to APS an  exclusive  right to acquire
180,000 shares of common stock of Exsorbet,  by exercising such portion of the
options  identified in paragraph 5, above as necessary to acquire such number of
shares. The acquisition price shall be S2.75 per share.
<PAGE>

     8. Exercising of Stock Options.  Stockholder  warrants and covenants with 
APS that he will,  upon  exercising  of the option  specified in paragraph 6 or
7, above, exercise the option  agreements  with  Exsorbet,  acquiring the number
of shares being  ultimately  transferrable to APS. Such option exercise shall 
occur within two  business  days of  not)fication  by APS that it is  exercising
the  option specified herein.

     9. APS  Agreements.  APS: (A) understands  that the Exsorbet stock has not
been, and will not be,  registered  under the Securities Act, or under any state
securities  laws,  and are being  offered and sold in reliance  upon federal and
state  exemptdons for  transactions  not involving any public  offering;  (B) is
acquiring the Exsorbet  stock for its own account for investment  purposes,  and
not with a view to the  distribution  thereof;  (C) is a sophisticated  investor
with  knowledge  and  experience  in business  and  financial  matters,  (D) has
received or will receive certain information concerning Exsorbet and has had the
opportunity to obtain additional information as desired in order to evaluate the
merits and the risks inherent in holding the Exsorbet stock; (E) is able to bear
the economic risk and lack of liquidity  inherent in holding the Exsorbet stock;
and (F) is an  Accredited  Investor,  as defined  in  Regulation  D  promulgated
pursuant to the Secunties Act of 1933, as amended.

     10. Paragraph Headings. Paragraph Headings, being the underlined portion at
the beginning of each section, are intended for assistance only and shall not 
alter, modify, amend, or change the meanings of the written paragraphs.

     11.  Construction.  This Agreement shall be liberally construed in favor of
granting an exclusive  option upon the terms  specified  herein.  In furtherance
thereof,  this  Agreement  shall be  construed in  accordance  with the laws and
statutes of the State of Texas, being the principal place of business of APS.

     12. Advice to Seek Legal Counsel.  Stockholder  has sought and obtained the
advice of counsel prior to entering this Agreement or has been strongly  advised
to obtain legal counsel  concerning the advisability of entering this Agreement.
In entering  this  Agreement,  Stockholder  is not relying upon any  statements,
representations,  or opinions of: (a) any attomeys or counsel for or of Exsorbet
or APS; (b) any representatives,  agents,  officers,  employees, or directors of
Exsorbet  Industries,  Inc., its  subsidiaries,  or APS; or (c) any person other
than his retained legal attorney.

     13. Notices. Notices to Stockholder shall be delivered to: ______________

     Notices to APS shall be  delivered  to:  Duane Boyd,  Jr.,  1301 Capital of
Texas Highway, Suite C-300, Austin, TX 78746.

     All notices  shall be  delivered  by  certified  mail with a retum  receipt
requested,  by ovemight courier, or by facsimile.  All notices shall be complete
upon delivery.

     14. Cooperation. Stockholder agrees to fully cooperate with APS in the 
event that APS elects to exercise any rights under this Agreement. Stockholder 
shall take no action which would obstruct the ability of APS to exercise its 
rights under this Agreement.
<PAGE>

     15. Procedure for Exercising Option. APS may exercise its rights under this
Agreement by giving written notice to the Sharebolder in the manner specified in
paragraph  13,  above.  Such  written  notice  shall be in any  reasonable  form
sufficient to notify  Stockholder of the  exercising of the option. Full payment
shall be due upon the  delivery  of any or all shares from  Stockholder  to APS.
Upon exercising of any options,  Stockholder  shall arrange for: (i) delivery of
existing  shares,  if any, to APS within five business days;  (ii) exercising of
any stock options with Exsorbet  within two business days; and (iii) delivery of
stock  certificates  obtained  upon exercise of stock ophons within two business
days of receipt of such stock certificates.

     16. Severability. In the event that any secdon or paragraph contained 
herein shall be invalid, unlawful, or unenforceable, the remainder shall be 
severable, valid, and effective as if such invalid, unlawful, or unenforceable
section or paragraph were not contained herein.

     17. Consideration. In consideration of the Agreements contained herein, APS
is providing the sum of One Hundred Dollars (S 100.00) to Stockholder. 
Stockholder accepts such amount as full and complete consideration for this 
Agreement.

     18. Complete Agreement. This Agreement is the full and complete agreement 
between the parties. There are no agreements or understandings between the 
parties which are not contained herein.

    19. Adjustments in Option. In the event that the common stock of Exsorbet is
changed into or exchanged  for a different  number or kind of shares of Exsorbet
or  other  securides  by  reason  of  merger, consolidation,  recapitalization,
reclassification, stock split, stock dividend or combination of shares, the 
option granted to APS herein shall be subject to an appropriate and equitable 
adjustment in the number and kind of shares as to which the  option,  or  
portions  thereof then  unexercised,  shall be  exercisable,  to the end that 
after such event the proportionate interest of APS shall be maintained as before
the occurrence of such event. Such adjustment in the option shall be made 
without change in the total price applicable to the unexercised portion of the 
option.

     20. APS Party Appointed  Attorney-in-Fact.  Stockholder  hereby irrevocably
appoints APS as  attorney-in-fact of  Stockholder  (such power of attomey  being
coupled  with an  interest),  with  full  authority  in the  place and stead of
Stockholder and in the name of Stockholder,  APS or otherwise, from time to time
on APS' discretion and upon the  occurrence of any default by Stockholder of any
of  Stockholder's  obligations  hereunder, to take any action and to execute any
instrument  which APS may deem necessary or advisable to accomplish the purposes
of this Agreement, including without limitation to assign and transfer the stock
which is the subject of this  Agreement to APS, or any part thereof,  absolutely
and to execute and deliver endorsements, assignments, conveyances, bills of sale
and other instruments with power to substitute one or more persons or 
corporation with like power.

     21. Binding Effect. This Option Agreement shall inure to the benefit of, 
and be  binding upon the parties hereto and  their  respective  heirs,  personal
representatives,  successors and permitted  assigns.  Stockholder may not assign
its rights or obligations hereunder without the prior express written consent of
APS in each instance.
<PAGE>

     IN WITNESS WHEREOF,  the parties have executed this  Agreement upon the day
and year first above written.

                                                  ------------------------
                                                  Stockholder
<PAGE>
                               

                                OPTION AGREEMENT

     THIS AGREEMENT is made and entered into on this 30th day of September, 1996
by and between American  Physicians  Service Group,  Inc.  ("APS"),  a Delaware
corporation, and Larry Woodcock and Marilyn Woodcock, individuals 
("Stockholder").

IT IS AGREED BY AND BETWEEN THE PARTIES AS FOLLOWS:

     1. Identification of Exsorbet Industries. Inc. Exsorbet Industries, Inc. is
an Idaho corporation, having its principal place of business in Jackson, 
Mississippi. The only class of common stock of Exsorbet Industries, Inc. trades 
on the Nasdaq Stock Market, Inc. SmallCap Market under the symbol "EXSO". As 
used herein, the term "Exsorbet" shall refer to Exsorbet Industries, Inc. and 
its successors.

     2. Disclosures. Stockholder has disclosed to APS that Exsorbet, through its
Board of Directors, has proposed merger into a Delaware corporation, whereby tne
Delaware corporation would be the surviving  corporation,  and changing the name
of Exsorbet to Consolidated EcoSysterns, Inc. The term "Exsorbet" shall refer to
such  surviving or successor  corporation  in the event that such merger  and/or
name change is approved.

     3. Representations. Stocknolder has made no representadons to APS 
concerning the financial condition of Exsorbet and its subsidiaries. Stockholder
has made no representations or warranties concerning the future value of 
Exsorbet stock, future earnings of Exsorbet, or any other representations
concerning Exsorbet, except as are identified herein.

     4. Stock Ownership. Stockholder is the owner of 1,152,021 shares of common 
stock of Exsorbet,  such shares  having  been  issued  pursuant to Rule 144 of 
the United States Securities and Exchange  Commission  ("Rule 144"). Such shares
of common stock are subject to the  provisions  of Rule 144 and all  applicable
state and federal  securities  regulations and statutes.  Stockholder will not 
transfer or assign any of such stock until expiration of this option agreement.

     5. Option  Agreements.  Stockholder  possesses  a present  right to acquire
200,000 shares of common  stock of Exsorbet  pursuant to an option  agreement or
agreements,  copies of which are attached hereto. Stockholder will not transfer,
extinguish or assign any of such options or rights  thereunder  until expiration
of this option agreement.

     6.  Option  Grant to APS.  For a period of sixty days after  September  30,
1996, Stockholder grants to APS an exclusive right to acquire 317,500 shares of
common stock of  Exsorbet, representing a portion  of  those  shares  identified
in paragraph 4, above. The acquisition price shall be $2.75 per share.

     7.  Additional  Option  Grant to APS.  For a period  of  sixty  days  after
September  30, 1996,  Stockholder  grants to APS an  exclusive  right to acquire
- -0- shares of common stock of Exsorbet,  by exercising such portion of the
options  identified in paragraph 5, above as necessary to acquire such number of
shares. The acquisition price shall be S2.75 per share.
<PAGE>

     8. Exercising of Stock Options.  Stockholder  warrants and covenants with 
APS that he will,  upon  exercising  of the option  specified in paragraph 6 or
7, above, exercise the option  agreements  with  Exsorbet,  acquiring the number
of shares being  ultimately  transferrable to APS. Such option exercise shall 
occur within two  business  days of  not)fication  by APS that it is  exercising
the  option specified herein.

     9. APS  Agreements.  APS: (A) understands  that the Exsorbet stock has not
been, and will not be,  registered  under the Securities Act, or under any state
securities  laws,  and are being  offered and sold in reliance  upon federal and
state  exemptdons for  transactions  not involving any public  offering;  (B) is
acquiring the Exsorbet  stock for its own account for investment  purposes,  and
not with a view to the  distribution  thereof;  (C) is a sophisticated  investor
with  knowledge  and  experience  in business  and  financial  matters,  (D) has
received or will receive certain information concerning Exsorbet and has had the
opportunity to obtain additional information as desired in order to evaluate the
merits and the risks inherent in holding the Exsorbet stock; (E) is able to bear
the economic risk and lack of liquidity  inherent in holding the Exsorbet stock;
and (F) is an  Accredited  Investor,  as defined  in  Regulation  D  promulgated
pursuant to the Secunties Act of 1933, as amended.

     10. Paragraph Headings. Paragraph Headings, being the underlined portion at
the beginning of each section, are intended for assistance only and shall not 
alter, modify, amend, or change the meanings of the written paragraphs.

     11.  Construction.  This Agreement shall be liberally construed in favor of
granting an exclusive  option upon the terms  specified  herein.  In furtherance
thereof,  this  Agreement  shall be  construed in  accordance  with the laws and
statutes of the State of Texas, being the principal place of business of APS.

     12. Advice to Seek Legal Counsel.  Stockholder  has sought and obtained the
advice of counsel prior to entering this Agreement or has been strongly  advised
to obtain legal counsel  concerning the advisability of entering this Agreement.
In entering  this  Agreement,  Stockholder  is not relying upon any  statements,
representations,  or opinions of: (a) any attomeys or counsel for or of Exsorbet
or APS; (b) any representatives,  agents,  officers,  employees, or directors of
Exsorbet  Industries,  Inc., its  subsidiaries,  or APS; or (c) any person other
than his retained legal attorney.

     13. Notices. Notices to Stockholder shall be delivered to: Larry and 
Marilyn Woodcock, 1890 Swisco Road, Sulpher, LA 70663.

     Notices to APS shall be  delivered  to:  Duane Boyd,  Jr.,  1301 Capital of
Texas Highway, Suite C-300, Austin, TX 78746.

     All notices  shall be  delivered  by  certified  mail with a retum  receipt
requested,  by ovemight courier, or by facsimile.  All notices shall be complete
upon delivery.

     14. Cooperation. Stockholder agrees to fully cooperate with APS in the 
event that APS elects to exercise any rights under this Agreement. Stockholder 
shall take no action which would obstruct the ability of APS to exercise its 
rights under this Agreement.
<PAGE>

     15. Procedure for Exercising Option. APS may exercise its rights under this
Agreement by giving written notice to the Sharebolder in the manner specified in
paragraph  13,  above.  Such  written  notice  shall be in any  reasonable  form
sufficient to notify  Stockholder of the  exercising of the option. Full payment
shall be due upon the  delivery  of any or all shares from  Stockholder  to APS.
Upon exercising of any options,  Stockholder  shall arrange for: (i) delivery of
existing  shares,  if any, to APS within five business days;  (ii) exercising of
any stock options with Exsorbet  within two business days; and (iii) delivery of
stock  certificates  obtained  upon exercise of stock ophons within two business
days of receipt of such stock certificates.

     16. Severability. In the event that any secdon or paragraph contained 
herein shall be invalid, unlawful, or unenforceable, the remainder shall be 
severable, valid, and effective as if such invalid, unlawful, or unenforceable
section or paragraph were not contained herein.

     17. Consideration. In consideration of the Agreements contained herein, APS
is providing the sum of One Hundred Dollars (S 100.00) to Stockholder. 
Stockholder accepts such amount as full and complete consideration for this 
Agreement.

     18. Complete Agreement. This Agreement is the full and complete agreement 
between the parties. There are no agreements or understandings between the 
parties which are not contained herein.

    19. Adjustments in Option. In the event that the common stock of Exsorbet is
changed into or exchanged  for a different  number or kind of shares of Exsorbet
or  other  securides  by  reason  of  merger, consolidation,  recapitalization,
reclassification, stock split, stock dividend or combination of shares, the 
option granted to APS herein shall be subject to an appropriate and equitable 
adjustment in the number and kind of shares as to which the  option,  or  
portions  thereof then  unexercised,  shall be  exercisable,  to the end that 
after such event the proportionate interest of APS shall be maintained as before
the occurrence of such event. Such adjustment in the option shall be made 
without change in the total price applicable to the unexercised portion of the 
option.

     20. APS Party Appointed  Attorney-in-Fact.  Stockholder  hereby irrevocably
appoints APS as  attorney-in-fact of  Stockholder  (such power of attomey  being
coupled  with an  interest),  with  full  authority  in the  place and stead of
Stockholder and in the name of Stockholder,  APS or otherwise, from time to time
on APS' discretion and upon the  occurrence of any default by Stockholder of any
of  Stockholder's  obligations  hereunder, to take any action and to execute any
instrument  which APS may deem necessary or advisable to accomplish the purposes
of this Agreement, including without limitation to assign and transfer the stock
which is the subject of this  Agreement to APS, or any part thereof,  absolutely
and to execute and deliver endorsements, assignments, conveyances, bills of sale
and other instruments with power to substitute one or more persons or 
corporation with like power.

     21. Binding Effect. This Option Agreement shall inure to the benefit of, 
and be  binding upon the parties hereto and  their  respective  heirs,  personal
representatives,  successors and permitted  assigns.  Stockholder may not assign
its rights or obligations hereunder without the prior express written consent of
APS in each instance.
<PAGE>

     IN WITNESS WHEREOF,  the parties have executed this  Agreement upon the day
and year first above written.

                                                  ------------------------
                                                  Stockholder

                                                                 Exhibit 10.23
                                   
                     AGREEMENT OF EXSORBET INDUSTRIES. INC.

     Exsorbet Industries, Inc. hereby indicates that it has no legal basis to 
object to the option agreement between those stockholders identified in Exhibit 
"A" attached hereto and American Physicians Service Group, Inc. Therefore, 
Exsorbet Industries, Inc. agrees that it has no basis to fail to consent to the
terms of such option agreement.

     As such, Exsorbet Industries, Inc. indicates that it will be lawfully bound
to comply with the provisions of the option agreement,  in all particulars,  and
specifically including sections 4, 5, 6, 7, and S.

     Exsorbet Industries,  Inc.,  therefore,  indicates that it will comply with
the  provisions  of the option  agreement  and the  direction  of those  persons
indicated on Exhibit "A," as are  necessary  for such persons to comply with the
individual  agreements  existing  between such  persons and American  Physicians
Service Group, Inc.

     The provisions ofthis Agreement shall be enforceable against Exsorbet 
Industries, Inc. Upon failure of Exsorbet Industries, Inc. to comply in all 
particulars with the provisions ofthis Agreement, this Agreement shall be 
enforceable by specific performance, injunctive relief, or otherwise.
Exsorbet Industries, Inc. consents to the exclusive jurisdiction of the Courts 
in Travis County, Texas for enforcement of any of the provisions of this 
Agreement.

     Exsorbet  Industries,  Inc. has further  indicated  to American  Physicians
Service Group,  Inc., and hereby  represents and warrants,  that in the event of
election of the option to acquire the shares specified in such option agreements
and following  failure of delivery of the shares  within 60 days after  November
30, 1996, that Exsorbet Industries, Inc. will take such steps to insure that the
number of shares not previously  delivered are delivered to American Physicians
Service  Group,  Inc., at the same cost,  without  regard to whether such shares
should come from an individual  shareholder or be issued by Exsorbet Industries,
Inc.

This Agreement shall be construed in accordance with the laws and statutes of 
the State of Texas.

                                        EXSORBET INDUSTRIES, INC.

                                        By:
                                          Title:

Executed on this 30th day of September, 1996.



                                                                 Exhibit 10.24

                               GUARANTY AGREEMENT


         THIS  GUARANTY  AGREEMENT  ("Guaranty")  is made as of the  30th day of
September,  1996,  by  Consolidated  Environmental  Services,  Inc., an Arkansas
corporation ("Guarantor"), for the benefit of American Physicians Service Group,
Inc., a Texas corporation ("Creditor").

         FOR VALUE  RECEIVED,  the receipt and  sufficiency  of which  Guarantor
acknowledges,  Guarantor hereby jointly, severally, absolutely, irrevocably, and
unconditionally guarantees to Creditor (a) the prompt payment and performance of
(i) any  and all  sums  becoming  due and  payable  pursuant  to the  Stock  Put
Agreement dated September 30, 1996,  executed by Exsorbet  Industries,  Inc., an
Idaho corporation ("Debtor") and Creditor, including without limitation any sums
which may hereafter become due and owing on the Promissory Note (the "Note"), in
the original principal amount of $3,300,000.00,  which may be executed by Debtor
pursuant  to the Stock Put  Agreement,  and  payable  to the order of  Creditor,
including  without  limitation  any and all  interest  thereon  (other than such
interest as may be in excess of the maximum  lawful  amount),  late  charges (if
any), and costs of collection  (including  reasonable attorney's fees); (ii) all
other sums and indebtedness described in or secured by the Transaction Documents
(as defined  below);  (iii) any and all other sums  becoming  due and payable by
Debtor to  Creditor as a result of  advances  made by  Creditor  pursuant to the
terms of the Transaction  Documents,  including without limitation the repayment
of any future  advances made by Creditor to Debtor and the repayment of any sums
advanced for the protection of Creditor's  security  pursuant to the Transaction
Documents; (iv) any and all renewals, extensions, replacements,  rearrangements,
substitutions,  or  modifications  of  all  or  any  part  of  the  Indebtedness
(collectively,  the  "Indebtedness"),  and  (b) the  performance  of any and all
obligations,  warranties,  representations,  covenants  and  agreements  made by
Debtor in connection with the Transaction Documents, as the same may be amended,
modified, or restated from time to time (the "Obligations").

         2. Transaction Documents.  The term "Transaction Documents" shall mean:
the Stock Put Agreement dated September 30, 1996, executed by and between Debtor
and Creditor;  the Note (if and when executed pursuant to the terms of the Stock
Put  Agreement);  the  Warrant  executed  by  Debtor in favor of  Creditor;  the
Shareholder Rights Agreement executed by Debtor and Creditor; the Assignment and
Security Agreement dated September 30, 1996,  executed by and between Debtor and
Creditor,  and all other security agreements,  assignments,  and other documents
executed  by Debtor  for the  benefit of  Creditor  to secure  the  payment  and
performance of the Indebtedness and Obligations and creating a lien and security
interest  against  the  real  or  personal   property   described  therein  (the
"Collateral");  any other Guaranty  Agreements or surety agreements  executed in
favor of Creditor and guaranteeing the Note; and any other agreement,  document,
or instrument  executed by Debtor or any other  guarantor in connection with the
transaction evidenced by the Stock Put Agreement.

         3.       Nature of Guaranty.  Guarantor agrees that this Guaranty is an
absolute, complete, continuing, unconditional and irrevocable guaranty of 
payment and performance of the Indebtedness and the Obligations.

         4.       Renewals and Extensions.  This Guaranty applies to, and the 
Indebtedness shall additionally mean and refer to, any and all renewals, 
extensions, modifications, alterations, refinancings and rearrangements of all 
or any part of the Indebtedness.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 1

                                                                       Initials

<PAGE>





         5.       Representations and Warranties.  Guarantor hereby represents 
and warrants the following to Creditor:

                  (a) Guarantor may  reasonably  expect to benefit,  directly or
indirectly,  from the making of this  Guaranty  and from and from each and every
renewal, extension, modification,  alteration, refinancing, and rearrangement of
all or any  part  of the  Indebtedness,  the  release  of  collateral  or  other
relinquishment  of legal  rights  made or  granted  or to be made or  granted by
Creditor to Debtor and the amendment or modification of the terms and conditions
of the Obligations,  and the Board of Directors of Guarantor has determined that
Guarantor may reasonably be expected to benefit,  directly or  indirectly,  from
the making of this Guaranty and has adopted resolutions stating the same; and

                  (b) Guarantor is familiar with, and has independently reviewed
the books and  records  regarding,  the  financial  condition  of Debtor  and is
familiar  with the value of any and all  collateral  intended to be security for
the payment of all or any part of the Indebtedness or for the performance of all
or any of the Obligations;  provided,  however, Guarantor is not relying on such
financial  condition or collateral as an inducement to enter into this Guaranty;
and

                  (c)  Guarantor  has adequate  means to obtain from Debtor on a
continuing basis  information  concerning the financial  condition of Debtor and
Guarantor  is not relying on Creditor to provide such  information  to Guarantor
either now or in the future; and

                  (d) Guarantor has the power and authority to execute, deliver,
and  perform  this  Guaranty  and any other  agreements  executed  by  Guarantor
contemporaneously herewith, and the execution, delivery, and performance of this
Guaranty  and any  other  agreements  executed  by  Guarantor  contemporaneously
herewith do not and will not violate (i) any  agreement or  instrument  to which
Guarantor  is  a  party,  (ii)  any  law,  rule,  regulation  or  order  of  any
governmental  authority to which Guarantor is subject,  or (iii) its articles or
certificate of incorporation or bylaw; and

                  (e)      neither Creditor nor any other party has made any 
representation, warranty or statement to Guarantor in order to induce Guarantor 
to execute this Guaranty; and

                  (f) the financial  statements and other financial  information
regarding Guarantor heretofore and hereafter delivered to Creditor are and shall
be true and correct in all material  respects and fairly  present the  financial
position of Guarantor as of the dates  thereof,  and no material  adverse change
has occurred in the financial  condition of Guarantor reflected in the financial
statements  and  other  financial  information  regarding  Guarantor  heretofore
delivered to Creditor since the date of the last statement thereof; and

                  (g) as of the date  hereof,  and after  giving  effect to this
Guaranty and the  obligations  evidenced  hereby,  (i)  Guarantor is and will be
solvent,  (ii) the fair saleable  value of  Guarantor's  assets exceeds and will
continue to exceed its liabilities (both fixed and contingent),  (iii) Guarantor
is and will  continue  to be able to pay its debts as they  mature,  and (iv) if
Guarantor  is not an  individual,  Guarantor  has  and  will  continue  to  have
sufficient  capital to carry on its business and all  businesses  in which it is
about to engage.

         6.       Inducement to Creditor.  Guarantor acknowledges that this 
Guaranty is given to induce Creditor to extend credit to Debtor which would not
be extended except in reliance upon this Guaranty.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 2

                                                                        Initials

<PAGE>







         7. Terms of Guaranty and Indebtedness  and  Obligations.  This Guaranty
contains the entire  agreement  between  Guarantor  and Creditor with respect to
Guarantor's  guarantee of the Indebtedness and Obligations;  provided,  however,
this Guaranty is in addition to and does not replace, cancel, modify, impair, or
affect any other  guaranty  executed by Guarantor  and now or hereafter  held by
Creditor   that   relates  to  Debtor  or  any  other   person  or  entity.   No
representations  or agreements have been made by Creditor to Guarantor except as
contained in this Guaranty.  Guarantor has read and understands the implications
of this Guaranty.  Guarantor  agrees to the terms,  provisions and conditions of
the Note,  the  Transaction  Documents  which may have been or may  hereafter be
executed by Debtor or other persons evidencing,  securing, or in connection with
the Indebtedness or Obligations or any part thereof, and agrees that Guarantor's
liability shall in no manner be affected,  impaired or released by reason of any
term,  provision,  or condition of the Note, the Transaction Documents or by the
failure,  refusal,  or omission of Creditor to enforce or observe any of same or
by any action  taken or omitted to be taken by Creditor  pursuant  thereto or in
connection therewith.

         8. Payment and Performance by Guarantor.  In each event that all or any
portion of the  Indebtedness  shall  become due and remain  unpaid  (however the
maturity may have occurred),  Guarantor will, upon demand, pay the amount due to
Creditor  (other than any  interest  as may be in excess of the  maximum  lawful
amount),  without notice having been given to Guarantor  previous to such demand
of the  acceptance  by Creditor of this Guaranty or of the creating or incurring
of  such  indebtedness.  Guarantor  specifically  agrees  that it  shall  not be
necessary or required in order to enforce any  obligations  under this  Guaranty
that Creditor has made demand for payment upon Debtor or any other person liable
on the Indebtedness for payment thereof or for performance of the Obligations or
has presented  same for payment by Debtor or any other person liable  thereon or
has made protest thereof or has given notice to Debtor or any other party liable
thereon of the maturity or nonpayment of the Indebtedness.  All amounts becoming
payable  by  Guarantor  to  Creditor  under  this  Guaranty  shall be payable at
Creditor's  address  stated  below,  or at such  other  address as  directed  by
Creditor in written notice to Guarantor. All payments made upon the Indebtedness
at any time shall be deemed to have been paid by Debtor unless express notice in
writing is given to Creditor at the time of payment by Guarantor  that  Creditor
has been paid by Guarantor. Upon demand by Creditor,  Guarantor shall perform or
cause to be performed any or all of the Obligations.

         9. Suit on Guaranty.  Suit may be brought by Creditor against Guarantor
alone,  or jointly and  severally  against  Guarantor  and any one or more other
guarantors of the Indebtedness and/or Obligations,  without impairing the rights
of  Creditor  against  Debtor or other  guarantors  of the  Indebtedness  and/or
Obligations.

         10.      Costs of Collection.  Guarantor agrees to pay all costs of 
collection, including reasonable attorney's fees and expenses, if this Guaranty 
is placed in the hands of an attorney for collection or is collected through any
 court.

         11. Waiver by Guarantor.  Guarantor  specifically waives any notice (i)
of acceptance of this Guaranty by Creditor,  (ii) of the creation,  advancement,
increase,   existence,   renewal,  extension,   modification,   refinancing,  or
rearrangement  of  the  Indebtedness,  or any  indulgence  with  respect  to the
Indebtedness,  or any part  thereof,  (iii) of  nonpayment  thereof  or  default
thereon or in the  performance  of the  Obligations,  and (iv) of any amendment,
modification, or restatement of all or any of the Obligations.  Guarantor waives
grace,  demand,  protest,  presentment,  and notice of intent to accelerate  the
maturity of the  Indebtedness,  notice of  acceleration  of the  maturity of the
Indebtedness,  demand, protest, or presentment with respect to the Indebtedness,
and Guarantor waives notice of the amount of the Indebtedness outstanding at any
time. Guarantor agrees that the

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 3

                                                                        Initials

<PAGE>





maturity of the Indebtedness, or any part thereof, may be accelerated,  renewed,
extended,  modified,  refinanced,  or rearranged or any other  indulgence may be
granted  with  respect  thereto by  Creditor  at its will or as may be agreed by
Debtor without notice to or further consent by Guarantor at any time.  Guarantor
agrees that  Guarantor  shall not be considered a "Debtor" as defined in Section
9.105 of the Texas Business and Commerce Code.

         12.  Guarantor's  Direct  Liability.  Creditor  shall not be  required,
before or as a condition of  enforcing  the  liability  of Guarantor  under this
Guaranty,  or requiring  payment of the  Indebtedness by Guarantor  hereunder or
performance  of the  Obligations,  or at any time  thereafter,  to do any of the
following: (a) proceed to obtain or assert a claim for personal judgment against
Debtor for the Indebtedness or make any effort at collection of the Indebtedness
from Debtor; (b) foreclose against or seek to realize upon the Collateral or any
security now or hereafter existing for the Indebtedness or Obligations; (c) file
suit or proceed to obtain or assert a claim for  personal  judgment  against any
other party (including any maker, guarantor,  endorser or surety) liable for the
Indebtedness or make any effort at collection of the Indebtedness  from any such
other party;  (d) exercise or assert any other right or remedy to which Creditor
is or may be entitled in connection with the  Indebtedness or Obligations or any
security or other  guaranty  therefor;  (e) assert or file any claim against the
assets  or  estate of Debtor or other  person  liable  for the  Indebtedness  or
Obligations,  or any part  thereof;  (f) take any action  against  Debtor or any
other person, to exhaust its remedies against endorsers, the Collateral or other
collateral  or security,  or to resort to any balance of any deposit  account or
credit on the books of Creditor in favor of Debtor or any other  person;  or (g)
pursue any other remedies  Creditor may have in connection with the Indebtedness
or Obligations.

         13.  Obligations  Not  Impaired.  Guarantor's  obligations  under  this
Guaranty  shall not be released,  diminished,  impaired,  reduced,  or adversely
affected,  and Guarantor  waives any common law,  equitable,  statutory or other
rights that Guarantor might otherwise have, as a result of any of the following:

                  (a) any full or partial  release of the  liability  of Debtor,
any other guarantor of the Indebtedness and/or Obligations,  or any other person
primarily or secondarily liable on the Indebtedness and/or  Obligations,  or any
part thereof (including any maker, endorser,  guarantor or surety), whether such
liability is direct or indirect,  joint, several, or joint and several, it being
recognized,  acknowledged  and agreed that  Guarantor may be required to pay the
Indebtedness and perform the Obligations in full without assistance of any other
party,  and  Guarantor  has not been induced to enter into this  Guaranty on the
basis of an  understanding  or agreement that other parties will at all times be
liable to pay the Indebtedness or perform the Obligations, or that Creditor will
look to other  parties  to pay the  Indebtedness  or  perform  the  Obligations;
provided,  however,  nothing in this  Guaranty  shall waive or  release,  either
expressly or impliedly, any rights of subrogation, reimbursement or contribution
that  Guarantor  may  have,  after  payment  in  full  of the  Indebtedness  and
performance of the Obligations,  against others liable under the Indebtedness or
for  performance of the  Obligations,  but  Guarantor's  rights of  subrogation,
reimbursement  and contribution  are secondary,  subordinate and inferior to the
rights and claims of Creditor;

                  (b) the voluntary or  involuntary  liquidation,  sale or other
disposition  of  all  or  substantially  all of the  assets  of  Debtor,  or any
receivership,   insolvency,   bankruptcy,   reorganization   or  other   similar
proceedings affecting Debtor or any of its assets;

                  (c) any  impairment,  modification,  release or  limitation of
liability  of  Debtor,   or  stay  of  foreclosure  or  other  lien  enforcement
proceedings  against  Debtor,  or  Debtor's  property,  or  Debtor's  estate  in
bankruptcy, or any modification, discharge or extension of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 4

                                                                        Initials

<PAGE>





resulting  from the operation of any present or future  provision of the Federal
Bankruptcy Code or other  bankruptcy laws, or from the decision of any court, it
being recognized,  acknowledged and agreed that Guarantor shall remain liable on
the Indebtedness and the Obligations, notwithstanding any act, omission or thing
which might,  but for the  provisions  hereof,  otherwise  operate as a legal or
equitable discharge of Guarantor;

                  (d)      any release of, subordination of, or substitution of
any security or other guaranty now or hereafter held by Creditor for payment of 
the Indebtedness and performance of the Obligations, or of any part thereof;

                  (e)      Creditor's failure to use diligence or care in 
preserving the liability of any person on the Indebtedness or the Obligations, 
or in bringing suit to enforce collection of the Indebtedness or performance of 
the Obligations;

                  (f)      the addition of another guarantor or guarantors of 
the Indebtedness or Obligations;

                  (g)      the substitution or withdrawal of collateral or 
release of security;

                  (h)      any renewal, extension, modification, alteration, 
refinancing  or rearrangement of or any other indulgence with respect to the 
Indebtedness or Obligations, or any part thereof;

                  (i) the exercise, failure to exercise, delay, omission or lack
of diligence or care by Creditor in exercising any right or power conferred upon
Creditor in this Guaranty,  the Note, or any  Transaction  Document  evidencing,
securing or relating to the Note or by law or in equity;

                  (j)  Debtor's  not  being  liable  for  the   Indebtedness  or
performance of the Obligations  because the act of creating the  Indebtedness or
Obligations is ultra vires, or the officers or persons creating the Indebtedness
or  Obligations  acted in  excess  of their  authority,  or for any  reason  the
Indebtedness or Obligations cannot be enforced against Debtor;

                  (k) any payment by Debtor to Creditor if such  payment is held
to constitute a preference under the Federal Bankruptcy Code or other bankruptcy
laws, or if for any other reason  Creditor is required to refund such payment to
Debtor or pay the amount thereof to any other party;

                  (l)      Guarantor's being or becoming liable for any 
indebtedness owing by Debtor to Creditor, by endorsement or otherwise, other 
than under this Guaranty; or

                  (m) the invalidity,  illegality or  unenforceability of all or
any part of the  Indebtedness,  for any  reason  whatsoever,  including  without
limitation the fact that the Note or other Transaction  Documents  pertaining to
the  Indebtedness or Obligations  have been forged or otherwise are irregular or
not genuine or authentic.

         14. Application of Payments.  If Creditor should collect or receive any
payments  from  any  person  other  than  Guarantor,  or  funds  which  are  not
specifically  required by law or  agreement  to be applied to the  Indebtedness,
then  Creditor may, in Creditor's  sole  discretion,  apply such payments to any
indebtedness  of Debtor  other  than the  Indebtedness.  Guarantor  agrees  that
Creditor  may apply  payments or other funds  received by Creditor  from Debtor,
from any other party obligated on the Indebtedness,  from the liquidation of any
collateral now or hereafter securing the Indebtedness, or from any other source,
including without limitation, insurance proceeds and

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 5

                                                                        Initials

<PAGE>





condemnation,  to the  Indebtedness  in any manner or order as Creditor may deem
appropriate in its sole and absolute discretion.

         15. Collection of Indebtedness. Guarantor expressly waives any right to
the  benefit  of or to require or control  application  of any  security  or the
proceeds  of any  security  now  existing or  hereafter  obtained by Creditor as
security for the  Indebtedness,  or any part  thereof,  and agrees that Creditor
shall have no duty to apply to the  Indebtedness  any monies,  payments or other
property at any time  received by or paid to or in the  possession  of Creditor,
except  as  Creditor  shall   determine  in  its  sole   discretion.   Guarantor
specifically agrees that Guarantor shall not have any recourse or action against
Creditor by reason of any action Creditor may take or omit to take in connection
with the  Indebtedness  or  Obligations,  the  collection of any sums or amounts
herein  mentioned,  or in connection with any security for or any other guaranty
of the Indebtedness and/or Obligations.

         16.  Subordination.  Guarantor  subordinates all indebtedness  owing to
Guarantor from Debtor to the Indebtedness.  Guarantor  further  subordinates any
liens or security  interest it may have in the  collateral or security of Debtor
(or any other  party) to the liens and  security  interests in favor of Creditor
securing the Indebtedness  and the  Obligations.  Guarantor agrees not to accept
any  payments  or  satisfaction  of any kind of any  indebtedness  of  Debtor to
Guarantor.  If Guarantor  should  receive any such payment or  satisfaction  for
indebtedness  of Debtor to Guarantor in violation of the above terms,  Guarantor
agrees to deliver the payment or satisfaction to Creditor,  and until delivered,
Guarantor agrees to hold the same in trust for Creditor.

         17. Notice of Litigation, Claims, and Financial Change. Guarantor shall
promptly  inform Creditor of any litigation  against  Guarantor or affecting any
security for the  Indebtedness or Obligations  which,  if determined  adversely,
might have a material  adverse effect upon the financial  condition of Guarantor
or upon  such  security  or might  cause a default  under  any of the  documents
evidencing, securing, or governing the Indebtedness or Obligations, any claim or
controversy  which might  become the  subject of  litigation,  and any  material
adverse change in the financial condition of Guarantor.

         18. Usury  Disclaimer.  No provision  herein or in any promissory note,
security  instrument,  or any other  Transaction  Document executed by Debtor or
Guarantor  evidencing the  Indebtedness  shall be construed to be or to create a
contract by  Guarantor to pay, as  consideration  for the use,  forbearance,  or
detention of money,  interest in excess of the rate or amount allowed by law. If
any excess of  interest in such  respect is  provided  for herein or in any such
promissory note, security  instrument,  or any other Transaction  Document,  the
provisions of this Section shall govern,  and neither Debtor nor Guarantor shall
be  obligated  to pay the amount of such  interest  to the extent  that it is in
excess of the amount  permitted by applicable  law. The intention of the parties
is to conform  strictly to the usury laws now in force, and all Promissory Notes
and  Transaction  Documents  executed  by Debtor  or  Guarantor  evidencing  the
Indebtedness  or  Obligations  shall be held  subject to reduction to the amount
allowed under said usury laws as now or hereafter construed by the courts having
jurisdiction.

         19.  Transferability.  This Guaranty is intended for and shall inure to
the benefit of Creditor  and each and every other  person who shall from time to
time be or become the owner or holder of any of the  Indebtedness,  and each and
every  reference  herein to  Creditor  shall also  include and refer to each and
every  successor  or assignee of Creditor at any time holding or owning any part
of or  interest  in any  part  of  the  Indebtedness.  This  Guaranty  shall  be
transferable  and  negotiable,  with the same  force and  effect and to the same
extent that the Indebtedness is transferable, it being understood and stipulated
that upon the assignment or transfer by Creditor of any of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 6

                                                                        Initials

<PAGE>





the legal  holder or owner of the  Indebtedness  (or part  thereof  or  interest
therein  transferred  or  assigned by  Creditor)  shall  also,  unless  provided
otherwise by Creditor in its transfer or  assignment,  have and may exercise all
of the rights  granted to Creditor under this Guaranty to the extent of the part
of or  interest in the  Indebtedness  assigned or  transferred  to said  person.
Guarantor expressly waives notice of transfer or assignment of the Indebtedness,
or any part  thereof,  or of the rights of Creditor  hereunder.  Notwithstanding
anything in this Section to the contrary,  all  Indebtedness  and Obligations to
Creditor  shall be paid and  performed  in full  first,  before any  assignee or
transferee shall receive any benefits of this Guaranty.

         20. Information Concerning Guarantor. Guarantor acknowledges and agrees
that Creditor may transfer the Indebtedness or partial  interests therein to one
or  more  transferees  or  participants.   Guarantor   authorizes   Creditor  to
disseminate  any  information  Creditor  has  pertaining  to  the  Indebtedness,
including,  without  limitation,  credit  information on Guarantor,  to any such
transferee or participant or prospective transferee or participant.

         21.      Binding on Others.  This Guaranty shall be binding upon 
Guarantor and Guarantor's heirs, legal representative, personal representatives,
 executors, administrators, successors and assigns.

         22. Modification or Consent. No modification,  consent or waiver of any
provision of this Guaranty shall be effective unless the  modification,  consent
or waiver is in writing and signed by an officer of Creditor,  and then shall be
effective only in the specific  instance and for the purpose for which given. No
notice to or demand on Guarantor in any case shall, of itself, entitle Guarantor
to any other or further notice or demand in similar or other  circumstances.  No
delay or  omission  by  Creditor  in  exercising  any power or right  under this
Guaranty  shall  impair  any such  right or  power or be  construed  as a waiver
thereof or any acquiescence therein, nor shall any single or partial exercise of
any such power preclude other or further  exercise  thereof,  or the exercise of
any other  right or power  under  this  Guaranty.  All rights  and  remedies  of
Creditor  under this  Guaranty are  cumulative  of each other and of every other
right or remedy which  Creditor may otherwise  have at law or in equity or under
any other  contract  or  document,  and the  exercise  of one or more  rights or
remedies shall not prejudice or impair the concurrent or subsequent  exercise of
other rights or remedies.

         23. Waiver of Certain Statutory Provisions. Guarantor hereby waives all
rights to which  Guarantor  may be or might  otherwise  become  entitled to with
respect to the  provisions of Sections 34.02 and 34.03 of the Texas Business and
Commerce Code, as amended,  and agrees that the rights of Guarantor  pursuant to
the  provisions  of Section  34.04 of the Texas  Business and Commerce  Code, as
amended,  shall be  subject  to,  secondary,  subordinate  and  inferior  in all
respects to the rights of Creditor pursuant to this Guaranty.

         24.  Notices.  Any notice or demand to Guarantor may be given and shall
conclusively  be deemed and  considered to have been given and received upon the
deposit  thereof,  in  writing,  in the United  States  mail,  duly  stamped and
addressed to Guarantor at Guarantor's  address stated below,  but actual notice,
however  given or  received,  shall  always  be  effective.  The last  preceding
sentence  shall not be  construed  in  anywise to affect or impair any waiver of
notice or demand herein  provided or to require giving of notice or demand to or
upon Guarantor in any situation or for any reason.  Creditor's  and  Guarantor's
respective addresses are:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 7

                                                                        Initials

<PAGE>




                           Creditor:   American Physicians Service Group, Inc.
                                       Attn: Mr. Duane K. Boyd
                                       1301 Capital of Texas Hwy., Suite C-300
                                       Austin, Texas, 78746

                           Guarantor:  Consolidated Environmental Services, Inc.
                                       Attn:
                                       1401 South Waldron, Suite 201
                                       Fort Smith, Arkansas 72903

         25.      Governing Law and Place of Performance.  GUARANTOR AGREES THAT
THIS GUARANTY IS GOVERNED BY THE LAWS OF THE UNITED STATES AND THE STATE OF 
TEXAS.  This Guaranty is performable in Travis County, Texas, and Guarantor 
hereby waives the right to be sued elsewhere.

         26.      Headings.  Section headings of this Guaranty are inserted for 
convenience of reference only, and shall not alter, define, or be used in 
construing the text of such sections.

         27.  Pronouns.  As used herein and when  required by the context,  each
number  (singular and plural)  shall include all numbers,  and each gender shall
include all genders, and unless the context otherwise requires the word "person"
or  "party"  shall  include   "person,   corporation,   firm,   partnership   or
association".

         28.     Notice of Invalidity of Oral Agreements. THIS WRITTEN AGREEMENT
REPRESENTS THE FINAL  AGREEMENT  BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS,  OR  SUBSEQUENT  ORAL  AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         EXECUTED this 30th day of September, 1996.

                                       GUARANTOR:

                                       Consolidated Environmental Services, Inc.
                                       (an Arkansas corporation)



                                       By:
                                      Name:
                                     Title:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 8

<PAGE>

GUARANTY AGREEMENT


         THIS  GUARANTY  AGREEMENT  ("Guaranty")  is made as of the  30th day of
September,  1996,  by  Cierra, Inc., an Arkansas corporation ("Guarantor"), 
for the benefit of American Physicians Service Group, Inc., a Texas corporation
("Creditor").

         FOR VALUE  RECEIVED,  the receipt and  sufficiency  of which  Guarantor
acknowledges,  Guarantor hereby jointly, severally, absolutely, irrevocably, and
unconditionally guarantees to Creditor (a) the prompt payment and performance of
(i) any  and all  sums  becoming  due and  payable  pursuant  to the  Stock  Put
Agreement dated September 30, 1996,  executed by Exsorbet  Industries,  Inc., an
Idaho corporation ("Debtor") and Creditor, including without limitation any sums
which may hereafter become due and owing on the Promissory Note (the "Note"), in
the original principal amount of $3,300,000.00,  which may be executed by Debtor
pursuant  to the Stock Put  Agreement,  and  payable  to the order of  Creditor,
including  without  limitation  any and all  interest  thereon  (other than such
interest as may be in excess of the maximum  lawful  amount),  late  charges (if
any), and costs of collection  (including  reasonable attorney's fees); (ii) all
other sums and indebtedness described in or secured by the Transaction Documents
(as defined  below);  (iii) any and all other sums  becoming  due and payable by
Debtor to  Creditor as a result of  advances  made by  Creditor  pursuant to the
terms of the Transaction  Documents,  including without limitation the repayment
of any future  advances made by Creditor to Debtor and the repayment of any sums
advanced for the protection of Creditor's  security  pursuant to the Transaction
Documents; (iv) any and all renewals, extensions, replacements,  rearrangements,
substitutions,  or  modifications  of  all  or  any  part  of  the  Indebtedness
(collectively,  the  "Indebtedness"),  and  (b) the  performance  of any and all
obligations,  warranties,  representations,  covenants  and  agreements  made by
Debtor in connection with the Transaction Documents, as the same may be amended,
modified, or restated from time to time (the "Obligations").

         2. Transaction Documents.  The term "Transaction Documents" shall mean:
the Stock Put Agreement dated September 30, 1996, executed by and between Debtor
and Creditor;  the Note (if and when executed pursuant to the terms of the Stock
Put  Agreement);  the  Warrant  executed  by  Debtor in favor of  Creditor;  the
Shareholder Rights Agreement executed by Debtor and Creditor; the Assignment and
Security Agreement dated September 30, 1996,  executed by and between Debtor and
Creditor,  and all other security agreements,  assignments,  and other documents
executed  by Debtor  for the  benefit of  Creditor  to secure  the  payment  and
performance of the Indebtedness and Obligations and creating a lien and security
interest  against  the  real  or  personal   property   described  therein  (the
"Collateral");  any other Guaranty  Agreements or surety agreements  executed in
favor of Creditor and guaranteeing the Note; and any other agreement,  document,
or instrument  executed by Debtor or any other  guarantor in connection with the
transaction evidenced by the Stock Put Agreement.

         3.       Nature of Guaranty.  Guarantor agrees that this Guaranty is an
absolute, complete, continuing, unconditional and irrevocable guaranty of 
payment and performance of the Indebtedness and the Obligations.

         4.       Renewals and Extensions.  This Guaranty applies to, and the 
Indebtedness shall additionally mean and refer to, any and all renewals, 
extensions, modifications, alterations, refinancings and rearrangements of all 
or any part of the Indebtedness.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 1

                                                                       Initials

<PAGE>





         5.       Representations and Warranties.  Guarantor hereby represents 
and warrants the following to Creditor:

                  (a) Guarantor may  reasonably  expect to benefit,  directly or
indirectly,  from the making of this  Guaranty  and from and from each and every
renewal, extension, modification,  alteration, refinancing, and rearrangement of
all or any  part  of the  Indebtedness,  the  release  of  collateral  or  other
relinquishment  of legal  rights  made or  granted  or to be made or  granted by
Creditor to Debtor and the amendment or modification of the terms and conditions
of the Obligations,  and the Board of Directors of Guarantor has determined that
Guarantor may reasonably be expected to benefit,  directly or  indirectly,  from
the making of this Guaranty and has adopted resolutions stating the same; and

                  (b) Guarantor is familiar with, and has independently reviewed
the books and  records  regarding,  the  financial  condition  of Debtor  and is
familiar  with the value of any and all  collateral  intended to be security for
the payment of all or any part of the Indebtedness or for the performance of all
or any of the Obligations;  provided,  however, Guarantor is not relying on such
financial  condition or collateral as an inducement to enter into this Guaranty;
and

                  (c)  Guarantor  has adequate  means to obtain from Debtor on a
continuing basis  information  concerning the financial  condition of Debtor and
Guarantor  is not relying on Creditor to provide such  information  to Guarantor
either now or in the future; and

                  (d) Guarantor has the power and authority to execute, deliver,
and  perform  this  Guaranty  and any other  agreements  executed  by  Guarantor
contemporaneously herewith, and the execution, delivery, and performance of this
Guaranty  and any  other  agreements  executed  by  Guarantor  contemporaneously
herewith do not and will not violate (i) any  agreement or  instrument  to which
Guarantor  is  a  party,  (ii)  any  law,  rule,  regulation  or  order  of  any
governmental  authority to which Guarantor is subject,  or (iii) its articles or
certificate of incorporation or bylaw; and

                  (e)      neither Creditor nor any other party has made any 
representation, warranty or statement to Guarantor in order to induce Guarantor 
to execute this Guaranty; and

                  (f) the financial  statements and other financial  information
regarding Guarantor heretofore and hereafter delivered to Creditor are and shall
be true and correct in all material  respects and fairly  present the  financial
position of Guarantor as of the dates  thereof,  and no material  adverse change
has occurred in the financial  condition of Guarantor reflected in the financial
statements  and  other  financial  information  regarding  Guarantor  heretofore
delivered to Creditor since the date of the last statement thereof; and

                  (g) as of the date  hereof,  and after  giving  effect to this
Guaranty and the  obligations  evidenced  hereby,  (i)  Guarantor is and will be
solvent,  (ii) the fair saleable  value of  Guarantor's  assets exceeds and will
continue to exceed its liabilities (both fixed and contingent),  (iii) Guarantor
is and will  continue  to be able to pay its debts as they  mature,  and (iv) if
Guarantor  is not an  individual,  Guarantor  has  and  will  continue  to  have
sufficient  capital to carry on its business and all  businesses  in which it is
about to engage.

         6.       Inducement to Creditor.  Guarantor acknowledges that this 
Guaranty is given to induce Creditor to extend credit to Debtor which would not
be extended except in reliance upon this Guaranty.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 2

                                                                        Initials

<PAGE>







         7. Terms of Guaranty and Indebtedness  and  Obligations.  This Guaranty
contains the entire  agreement  between  Guarantor  and Creditor with respect to
Guarantor's  guarantee of the Indebtedness and Obligations;  provided,  however,
this Guaranty is in addition to and does not replace, cancel, modify, impair, or
affect any other  guaranty  executed by Guarantor  and now or hereafter  held by
Creditor   that   relates  to  Debtor  or  any  other   person  or  entity.   No
representations  or agreements have been made by Creditor to Guarantor except as
contained in this Guaranty.  Guarantor has read and understands the implications
of this Guaranty.  Guarantor  agrees to the terms,  provisions and conditions of
the Note,  the  Transaction  Documents  which may have been or may  hereafter be
executed by Debtor or other persons evidencing,  securing, or in connection with
the Indebtedness or Obligations or any part thereof, and agrees that Guarantor's
liability shall in no manner be affected,  impaired or released by reason of any
term,  provision,  or condition of the Note, the Transaction Documents or by the
failure,  refusal,  or omission of Creditor to enforce or observe any of same or
by any action  taken or omitted to be taken by Creditor  pursuant  thereto or in
connection therewith.

         8. Payment and Performance by Guarantor.  In each event that all or any
portion of the  Indebtedness  shall  become due and remain  unpaid  (however the
maturity may have occurred),  Guarantor will, upon demand, pay the amount due to
Creditor  (other than any  interest  as may be in excess of the  maximum  lawful
amount),  without notice having been given to Guarantor  previous to such demand
of the  acceptance  by Creditor of this Guaranty or of the creating or incurring
of  such  indebtedness.  Guarantor  specifically  agrees  that it  shall  not be
necessary or required in order to enforce any  obligations  under this  Guaranty
that Creditor has made demand for payment upon Debtor or any other person liable
on the Indebtedness for payment thereof or for performance of the Obligations or
has presented  same for payment by Debtor or any other person liable  thereon or
has made protest thereof or has given notice to Debtor or any other party liable
thereon of the maturity or nonpayment of the Indebtedness.  All amounts becoming
payable  by  Guarantor  to  Creditor  under  this  Guaranty  shall be payable at
Creditor's  address  stated  below,  or at such  other  address as  directed  by
Creditor in written notice to Guarantor. All payments made upon the Indebtedness
at any time shall be deemed to have been paid by Debtor unless express notice in
writing is given to Creditor at the time of payment by Guarantor  that  Creditor
has been paid by Guarantor. Upon demand by Creditor,  Guarantor shall perform or
cause to be performed any or all of the Obligations.

         9. Suit on Guaranty.  Suit may be brought by Creditor against Guarantor
alone,  or jointly and  severally  against  Guarantor  and any one or more other
guarantors of the Indebtedness and/or Obligations,  without impairing the rights
of  Creditor  against  Debtor or other  guarantors  of the  Indebtedness  and/or
Obligations.

         10.      Costs of Collection.  Guarantor agrees to pay all costs of 
collection, including reasonable attorney's fees and expenses, if this Guaranty 
is placed in the hands of an attorney for collection or is collected through any
 court.

         11. Waiver by Guarantor.  Guarantor  specifically waives any notice (i)
of acceptance of this Guaranty by Creditor,  (ii) of the creation,  advancement,
increase,   existence,   renewal,  extension,   modification,   refinancing,  or
rearrangement  of  the  Indebtedness,  or any  indulgence  with  respect  to the
Indebtedness,  or any part  thereof,  (iii) of  nonpayment  thereof  or  default
thereon or in the  performance  of the  Obligations,  and (iv) of any amendment,
modification, or restatement of all or any of the Obligations.  Guarantor waives
grace,  demand,  protest,  presentment,  and notice of intent to accelerate  the
maturity of the  Indebtedness,  notice of  acceleration  of the  maturity of the
Indebtedness,  demand, protest, or presentment with respect to the Indebtedness,
and Guarantor waives notice of the amount of the Indebtedness outstanding at any
time. Guarantor agrees that the

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 3

                                                                        Initials

<PAGE>





maturity of the Indebtedness, or any part thereof, may be accelerated,  renewed,
extended,  modified,  refinanced,  or rearranged or any other  indulgence may be
granted  with  respect  thereto by  Creditor  at its will or as may be agreed by
Debtor without notice to or further consent by Guarantor at any time.  Guarantor
agrees that  Guarantor  shall not be considered a "Debtor" as defined in Section
9.105 of the Texas Business and Commerce Code.

         12.  Guarantor's  Direct  Liability.  Creditor  shall not be  required,
before or as a condition of  enforcing  the  liability  of Guarantor  under this
Guaranty,  or requiring  payment of the  Indebtedness by Guarantor  hereunder or
performance  of the  Obligations,  or at any time  thereafter,  to do any of the
following: (a) proceed to obtain or assert a claim for personal judgment against
Debtor for the Indebtedness or make any effort at collection of the Indebtedness
from Debtor; (b) foreclose against or seek to realize upon the Collateral or any
security now or hereafter existing for the Indebtedness or Obligations; (c) file
suit or proceed to obtain or assert a claim for  personal  judgment  against any
other party (including any maker, guarantor,  endorser or surety) liable for the
Indebtedness or make any effort at collection of the Indebtedness  from any such
other party;  (d) exercise or assert any other right or remedy to which Creditor
is or may be entitled in connection with the  Indebtedness or Obligations or any
security or other  guaranty  therefor;  (e) assert or file any claim against the
assets  or  estate of Debtor or other  person  liable  for the  Indebtedness  or
Obligations,  or any part  thereof;  (f) take any action  against  Debtor or any
other person, to exhaust its remedies against endorsers, the Collateral or other
collateral  or security,  or to resort to any balance of any deposit  account or
credit on the books of Creditor in favor of Debtor or any other  person;  or (g)
pursue any other remedies  Creditor may have in connection with the Indebtedness
or Obligations.

         13.  Obligations  Not  Impaired.  Guarantor's  obligations  under  this
Guaranty  shall not be released,  diminished,  impaired,  reduced,  or adversely
affected,  and Guarantor  waives any common law,  equitable,  statutory or other
rights that Guarantor might otherwise have, as a result of any of the following:

                  (a) any full or partial  release of the  liability  of Debtor,
any other guarantor of the Indebtedness and/or Obligations,  or any other person
primarily or secondarily liable on the Indebtedness and/or  Obligations,  or any
part thereof (including any maker, endorser,  guarantor or surety), whether such
liability is direct or indirect,  joint, several, or joint and several, it being
recognized,  acknowledged  and agreed that  Guarantor may be required to pay the
Indebtedness and perform the Obligations in full without assistance of any other
party,  and  Guarantor  has not been induced to enter into this  Guaranty on the
basis of an  understanding  or agreement that other parties will at all times be
liable to pay the Indebtedness or perform the Obligations, or that Creditor will
look to other  parties  to pay the  Indebtedness  or  perform  the  Obligations;
provided,  however,  nothing in this  Guaranty  shall waive or  release,  either
expressly or impliedly, any rights of subrogation, reimbursement or contribution
that  Guarantor  may  have,  after  payment  in  full  of the  Indebtedness  and
performance of the Obligations,  against others liable under the Indebtedness or
for  performance of the  Obligations,  but  Guarantor's  rights of  subrogation,
reimbursement  and contribution  are secondary,  subordinate and inferior to the
rights and claims of Creditor;

                  (b) the voluntary or  involuntary  liquidation,  sale or other
disposition  of  all  or  substantially  all of the  assets  of  Debtor,  or any
receivership,   insolvency,   bankruptcy,   reorganization   or  other   similar
proceedings affecting Debtor or any of its assets;

                  (c) any  impairment,  modification,  release or  limitation of
liability  of  Debtor,   or  stay  of  foreclosure  or  other  lien  enforcement
proceedings  against  Debtor,  or  Debtor's  property,  or  Debtor's  estate  in
bankruptcy, or any modification, discharge or extension of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 4

                                                                        Initials

<PAGE>





resulting  from the operation of any present or future  provision of the Federal
Bankruptcy Code or other  bankruptcy laws, or from the decision of any court, it
being recognized,  acknowledged and agreed that Guarantor shall remain liable on
the Indebtedness and the Obligations, notwithstanding any act, omission or thing
which might,  but for the  provisions  hereof,  otherwise  operate as a legal or
equitable discharge of Guarantor;

                  (d)      any release of, subordination of, or substitution of
any security or other guaranty now or hereafter held by Creditor for payment of 
the Indebtedness and performance of the Obligations, or of any part thereof;

                  (e)      Creditor's failure to use diligence or care in 
preserving the liability of any person on the Indebtedness or the Obligations, 
or in bringing suit to enforce collection of the Indebtedness or performance of 
the Obligations;

                  (f)      the addition of another guarantor or guarantors of 
the Indebtedness or Obligations;

                  (g)      the substitution or withdrawal of collateral or 
release of security;

                  (h)      any renewal, extension, modification, alteration, 
refinancing  or rearrangement of or any other indulgence with respect to the 
Indebtedness or Obligations, or any part thereof;

                  (i) the exercise, failure to exercise, delay, omission or lack
of diligence or care by Creditor in exercising any right or power conferred upon
Creditor in this Guaranty,  the Note, or any  Transaction  Document  evidencing,
securing or relating to the Note or by law or in equity;

                  (j)  Debtor's  not  being  liable  for  the   Indebtedness  or
performance of the Obligations  because the act of creating the  Indebtedness or
Obligations is ultra vires, or the officers or persons creating the Indebtedness
or  Obligations  acted in  excess  of their  authority,  or for any  reason  the
Indebtedness or Obligations cannot be enforced against Debtor;

                  (k) any payment by Debtor to Creditor if such  payment is held
to constitute a preference under the Federal Bankruptcy Code or other bankruptcy
laws, or if for any other reason  Creditor is required to refund such payment to
Debtor or pay the amount thereof to any other party;

                  (l)      Guarantor's being or becoming liable for any 
indebtedness owing by Debtor to Creditor, by endorsement or otherwise, other 
than under this Guaranty; or

                  (m) the invalidity,  illegality or  unenforceability of all or
any part of the  Indebtedness,  for any  reason  whatsoever,  including  without
limitation the fact that the Note or other Transaction  Documents  pertaining to
the  Indebtedness or Obligations  have been forged or otherwise are irregular or
not genuine or authentic.

         14. Application of Payments.  If Creditor should collect or receive any
payments  from  any  person  other  than  Guarantor,  or  funds  which  are  not
specifically  required by law or  agreement  to be applied to the  Indebtedness,
then  Creditor may, in Creditor's  sole  discretion,  apply such payments to any
indebtedness  of Debtor  other  than the  Indebtedness.  Guarantor  agrees  that
Creditor  may apply  payments or other funds  received by Creditor  from Debtor,
from any other party obligated on the Indebtedness,  from the liquidation of any
collateral now or hereafter securing the Indebtedness, or from any other source,
including without limitation, insurance proceeds and

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 5

                                                                        Initials

<PAGE>





condemnation,  to the  Indebtedness  in any manner or order as Creditor may deem
appropriate in its sole and absolute discretion.

         15. Collection of Indebtedness. Guarantor expressly waives any right to
the  benefit  of or to require or control  application  of any  security  or the
proceeds  of any  security  now  existing or  hereafter  obtained by Creditor as
security for the  Indebtedness,  or any part  thereof,  and agrees that Creditor
shall have no duty to apply to the  Indebtedness  any monies,  payments or other
property at any time  received by or paid to or in the  possession  of Creditor,
except  as  Creditor  shall   determine  in  its  sole   discretion.   Guarantor
specifically agrees that Guarantor shall not have any recourse or action against
Creditor by reason of any action Creditor may take or omit to take in connection
with the  Indebtedness  or  Obligations,  the  collection of any sums or amounts
herein  mentioned,  or in connection with any security for or any other guaranty
of the Indebtedness and/or Obligations.

         16.  Subordination.  Guarantor  subordinates all indebtedness  owing to
Guarantor from Debtor to the Indebtedness.  Guarantor  further  subordinates any
liens or security  interest it may have in the  collateral or security of Debtor
(or any other  party) to the liens and  security  interests in favor of Creditor
securing the Indebtedness  and the  Obligations.  Guarantor agrees not to accept
any  payments  or  satisfaction  of any kind of any  indebtedness  of  Debtor to
Guarantor.  If Guarantor  should  receive any such payment or  satisfaction  for
indebtedness  of Debtor to Guarantor in violation of the above terms,  Guarantor
agrees to deliver the payment or satisfaction to Creditor,  and until delivered,
Guarantor agrees to hold the same in trust for Creditor.

         17. Notice of Litigation, Claims, and Financial Change. Guarantor shall
promptly  inform Creditor of any litigation  against  Guarantor or affecting any
security for the  Indebtedness or Obligations  which,  if determined  adversely,
might have a material  adverse effect upon the financial  condition of Guarantor
or upon  such  security  or might  cause a default  under  any of the  documents
evidencing, securing, or governing the Indebtedness or Obligations, any claim or
controversy  which might  become the  subject of  litigation,  and any  material
adverse change in the financial condition of Guarantor.

         18. Usury  Disclaimer.  No provision  herein or in any promissory note,
security  instrument,  or any other  Transaction  Document executed by Debtor or
Guarantor  evidencing the  Indebtedness  shall be construed to be or to create a
contract by  Guarantor to pay, as  consideration  for the use,  forbearance,  or
detention of money,  interest in excess of the rate or amount allowed by law. If
any excess of  interest in such  respect is  provided  for herein or in any such
promissory note, security  instrument,  or any other Transaction  Document,  the
provisions of this Section shall govern,  and neither Debtor nor Guarantor shall
be  obligated  to pay the amount of such  interest  to the extent  that it is in
excess of the amount  permitted by applicable  law. The intention of the parties
is to conform  strictly to the usury laws now in force, and all Promissory Notes
and  Transaction  Documents  executed  by Debtor  or  Guarantor  evidencing  the
Indebtedness  or  Obligations  shall be held  subject to reduction to the amount
allowed under said usury laws as now or hereafter construed by the courts having
jurisdiction.

         19.  Transferability.  This Guaranty is intended for and shall inure to
the benefit of Creditor  and each and every other  person who shall from time to
time be or become the owner or holder of any of the  Indebtedness,  and each and
every  reference  herein to  Creditor  shall also  include and refer to each and
every  successor  or assignee of Creditor at any time holding or owning any part
of or  interest  in any  part  of  the  Indebtedness.  This  Guaranty  shall  be
transferable  and  negotiable,  with the same  force and  effect and to the same
extent that the Indebtedness is transferable, it being understood and stipulated
that upon the assignment or transfer by Creditor of any of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 6

                                                                        Initials

<PAGE>





the legal  holder or owner of the  Indebtedness  (or part  thereof  or  interest
therein  transferred  or  assigned by  Creditor)  shall  also,  unless  provided
otherwise by Creditor in its transfer or  assignment,  have and may exercise all
of the rights  granted to Creditor under this Guaranty to the extent of the part
of or  interest in the  Indebtedness  assigned or  transferred  to said  person.
Guarantor expressly waives notice of transfer or assignment of the Indebtedness,
or any part  thereof,  or of the rights of Creditor  hereunder.  Notwithstanding
anything in this Section to the contrary,  all  Indebtedness  and Obligations to
Creditor  shall be paid and  performed  in full  first,  before any  assignee or
transferee shall receive any benefits of this Guaranty.

         20. Information Concerning Guarantor. Guarantor acknowledges and agrees
that Creditor may transfer the Indebtedness or partial  interests therein to one
or  more  transferees  or  participants.   Guarantor   authorizes   Creditor  to
disseminate  any  information  Creditor  has  pertaining  to  the  Indebtedness,
including,  without  limitation,  credit  information on Guarantor,  to any such
transferee or participant or prospective transferee or participant.

         21.      Binding on Others.  This Guaranty shall be binding upon 
Guarantor and Guarantor's heirs, legal representative, personal representatives,
 executors, administrators, successors and assigns.

         22. Modification or Consent. No modification,  consent or waiver of any
provision of this Guaranty shall be effective unless the  modification,  consent
or waiver is in writing and signed by an officer of Creditor,  and then shall be
effective only in the specific  instance and for the purpose for which given. No
notice to or demand on Guarantor in any case shall, of itself, entitle Guarantor
to any other or further notice or demand in similar or other  circumstances.  No
delay or  omission  by  Creditor  in  exercising  any power or right  under this
Guaranty  shall  impair  any such  right or  power or be  construed  as a waiver
thereof or any acquiescence therein, nor shall any single or partial exercise of
any such power preclude other or further  exercise  thereof,  or the exercise of
any other  right or power  under  this  Guaranty.  All rights  and  remedies  of
Creditor  under this  Guaranty are  cumulative  of each other and of every other
right or remedy which  Creditor may otherwise  have at law or in equity or under
any other  contract  or  document,  and the  exercise  of one or more  rights or
remedies shall not prejudice or impair the concurrent or subsequent  exercise of
other rights or remedies.

         23. Waiver of Certain Statutory Provisions. Guarantor hereby waives all
rights to which  Guarantor  may be or might  otherwise  become  entitled to with
respect to the  provisions of Sections 34.02 and 34.03 of the Texas Business and
Commerce Code, as amended,  and agrees that the rights of Guarantor  pursuant to
the  provisions  of Section  34.04 of the Texas  Business and Commerce  Code, as
amended,  shall be  subject  to,  secondary,  subordinate  and  inferior  in all
respects to the rights of Creditor pursuant to this Guaranty.

         24.  Notices.  Any notice or demand to Guarantor may be given and shall
conclusively  be deemed and  considered to have been given and received upon the
deposit  thereof,  in  writing,  in the United  States  mail,  duly  stamped and
addressed to Guarantor at Guarantor's  address stated below,  but actual notice,
however  given or  received,  shall  always  be  effective.  The last  preceding
sentence  shall not be  construed  in  anywise to affect or impair any waiver of
notice or demand herein  provided or to require giving of notice or demand to or
upon Guarantor in any situation or for any reason.  Creditor's  and  Guarantor's
respective addresses are:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 7

                                                                        Initials

<PAGE>




                           Creditor:   American Physicians Service Group, Inc.
                                       Attn: Mr. Duane K. Boyd
                                       1301 Capital of Texas Hwy., Suite C-300
                                       Austin, Texas, 78746

                           Guarantor:  Cierra, Inc.
                                       Attn:
                                       1401 South Waldron, Suite 201
                                       Fort Smith, Arkansas 72903

         25.      Governing Law and Place of Performance.  GUARANTOR AGREES THAT
THIS GUARANTY IS GOVERNED BY THE LAWS OF THE UNITED STATES AND THE STATE OF 
TEXAS.  This Guaranty is performable in Travis County, Texas, and Guarantor 
hereby waives the right to be sued elsewhere.

         26.      Headings.  Section headings of this Guaranty are inserted for 
convenience of reference only, and shall not alter, define, or be used in 
construing the text of such sections.

         27.  Pronouns.  As used herein and when  required by the context,  each
number  (singular and plural)  shall include all numbers,  and each gender shall
include all genders, and unless the context otherwise requires the word "person"
or  "party"  shall  include   "person,   corporation,   firm,   partnership   or
association".

         28.     Notice of Invalidity of Oral Agreements. THIS WRITTEN AGREEMENT
REPRESENTS THE FINAL  AGREEMENT  BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS,  OR  SUBSEQUENT  ORAL  AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         EXECUTED this 30th day of September, 1996.

                                       GUARANTOR:

                                       Cierra, Inc.
                                       (an Arkansas corporation)



                                       By:
                                      Name:
                                     Title:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 8

<PAGE>

GUARANTY AGREEMENT


         THIS  GUARANTY  AGREEMENT  ("Guaranty")  is made as of the  30th day of
September, 1996, by Larco Environmental Services, Inc., a Louisiana corporation 
("Guarantor"), for the benefit of American Physicians Service Group, Inc., a 
Texas corporation ("Creditor").

         FOR VALUE  RECEIVED,  the receipt and  sufficiency  of which  Guarantor
acknowledges,  Guarantor hereby jointly, severally, absolutely, irrevocably, and
unconditionally guarantees to Creditor (a) the prompt payment and performance of
(i) any  and all  sums  becoming  due and  payable  pursuant  to the  Stock  Put
Agreement dated September 30, 1996,  executed by Exsorbet  Industries,  Inc., an
Idaho corporation ("Debtor") and Creditor, including without limitation any sums
which may hereafter become due and owing on the Promissory Note (the "Note"), in
the original principal amount of $3,300,000.00,  which may be executed by Debtor
pursuant  to the Stock Put  Agreement,  and  payable  to the order of  Creditor,
including  without  limitation  any and all  interest  thereon  (other than such
interest as may be in excess of the maximum  lawful  amount),  late  charges (if
any), and costs of collection  (including  reasonable attorney's fees); (ii) all
other sums and indebtedness described in or secured by the Transaction Documents
(as defined  below);  (iii) any and all other sums  becoming  due and payable by
Debtor to  Creditor as a result of  advances  made by  Creditor  pursuant to the
terms of the Transaction  Documents,  including without limitation the repayment
of any future  advances made by Creditor to Debtor and the repayment of any sums
advanced for the protection of Creditor's  security  pursuant to the Transaction
Documents; (iv) any and all renewals, extensions, replacements,  rearrangements,
substitutions,  or  modifications  of  all  or  any  part  of  the  Indebtedness
(collectively,  the  "Indebtedness"),  and  (b) the  performance  of any and all
obligations,  warranties,  representations,  covenants  and  agreements  made by
Debtor in connection with the Transaction Documents, as the same may be amended,
modified, or restated from time to time (the "Obligations").

         2. Transaction Documents.  The term "Transaction Documents" shall mean:
the Stock Put Agreement dated September 30, 1996, executed by and between Debtor
and Creditor;  the Note (if and when executed pursuant to the terms of the Stock
Put  Agreement);  the  Warrant  executed  by  Debtor in favor of  Creditor;  the
Shareholder Rights Agreement executed by Debtor and Creditor; the Assignment and
Security Agreement dated September 30, 1996,  executed by and between Debtor and
Creditor,  and all other security agreements,  assignments,  and other documents
executed  by Debtor  for the  benefit of  Creditor  to secure  the  payment  and
performance of the Indebtedness and Obligations and creating a lien and security
interest  against  the  real  or  personal   property   described  therein  (the
"Collateral");  any other Guaranty  Agreements or surety agreements  executed in
favor of Creditor and guaranteeing the Note; and any other agreement,  document,
or instrument  executed by Debtor or any other  guarantor in connection with the
transaction evidenced by the Stock Put Agreement.

         3.       Nature of Guaranty.  Guarantor agrees that this Guaranty is an
absolute, complete, continuing, unconditional and irrevocable guaranty of 
payment and performance of the Indebtedness and the Obligations.

         4.       Renewals and Extensions.  This Guaranty applies to, and the 
Indebtedness shall additionally mean and refer to, any and all renewals, 
extensions, modifications, alterations, refinancings and rearrangements of all 
or any part of the Indebtedness.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 1

                                                                       Initials

<PAGE>





         5.       Representations and Warranties.  Guarantor hereby represents 
and warrants the following to Creditor:

                  (a) Guarantor may  reasonably  expect to benefit,  directly or
indirectly,  from the making of this  Guaranty  and from and from each and every
renewal, extension, modification,  alteration, refinancing, and rearrangement of
all or any  part  of the  Indebtedness,  the  release  of  collateral  or  other
relinquishment  of legal  rights  made or  granted  or to be made or  granted by
Creditor to Debtor and the amendment or modification of the terms and conditions
of the Obligations,  and the Board of Directors of Guarantor has determined that
Guarantor may reasonably be expected to benefit,  directly or  indirectly,  from
the making of this Guaranty and has adopted resolutions stating the same; and

                  (b) Guarantor is familiar with, and has independently reviewed
the books and  records  regarding,  the  financial  condition  of Debtor  and is
familiar  with the value of any and all  collateral  intended to be security for
the payment of all or any part of the Indebtedness or for the performance of all
or any of the Obligations;  provided,  however, Guarantor is not relying on such
financial  condition or collateral as an inducement to enter into this Guaranty;
and

                  (c)  Guarantor  has adequate  means to obtain from Debtor on a
continuing basis  information  concerning the financial  condition of Debtor and
Guarantor  is not relying on Creditor to provide such  information  to Guarantor
either now or in the future; and

                  (d) Guarantor has the power and authority to execute, deliver,
and  perform  this  Guaranty  and any other  agreements  executed  by  Guarantor
contemporaneously herewith, and the execution, delivery, and performance of this
Guaranty  and any  other  agreements  executed  by  Guarantor  contemporaneously
herewith do not and will not violate (i) any  agreement or  instrument  to which
Guarantor  is  a  party,  (ii)  any  law,  rule,  regulation  or  order  of  any
governmental  authority to which Guarantor is subject,  or (iii) its articles or
certificate of incorporation or bylaw; and

                  (e)      neither Creditor nor any other party has made any 
representation, warranty or statement to Guarantor in order to induce Guarantor 
to execute this Guaranty; and

                  (f) the financial  statements and other financial  information
regarding Guarantor heretofore and hereafter delivered to Creditor are and shall
be true and correct in all material  respects and fairly  present the  financial
position of Guarantor as of the dates  thereof,  and no material  adverse change
has occurred in the financial  condition of Guarantor reflected in the financial
statements  and  other  financial  information  regarding  Guarantor  heretofore
delivered to Creditor since the date of the last statement thereof; and

                  (g) as of the date  hereof,  and after  giving  effect to this
Guaranty and the  obligations  evidenced  hereby,  (i)  Guarantor is and will be
solvent,  (ii) the fair saleable  value of  Guarantor's  assets exceeds and will
continue to exceed its liabilities (both fixed and contingent),  (iii) Guarantor
is and will  continue  to be able to pay its debts as they  mature,  and (iv) if
Guarantor  is not an  individual,  Guarantor  has  and  will  continue  to  have
sufficient  capital to carry on its business and all  businesses  in which it is
about to engage.

         6.       Inducement to Creditor.  Guarantor acknowledges that this 
Guaranty is given to induce Creditor to extend credit to Debtor which would not
be extended except in reliance upon this Guaranty.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 2

                                                                        Initials

<PAGE>







         7. Terms of Guaranty and Indebtedness  and  Obligations.  This Guaranty
contains the entire  agreement  between  Guarantor  and Creditor with respect to
Guarantor's  guarantee of the Indebtedness and Obligations;  provided,  however,
this Guaranty is in addition to and does not replace, cancel, modify, impair, or
affect any other  guaranty  executed by Guarantor  and now or hereafter  held by
Creditor   that   relates  to  Debtor  or  any  other   person  or  entity.   No
representations  or agreements have been made by Creditor to Guarantor except as
contained in this Guaranty.  Guarantor has read and understands the implications
of this Guaranty.  Guarantor  agrees to the terms,  provisions and conditions of
the Note,  the  Transaction  Documents  which may have been or may  hereafter be
executed by Debtor or other persons evidencing,  securing, or in connection with
the Indebtedness or Obligations or any part thereof, and agrees that Guarantor's
liability shall in no manner be affected,  impaired or released by reason of any
term,  provision,  or condition of the Note, the Transaction Documents or by the
failure,  refusal,  or omission of Creditor to enforce or observe any of same or
by any action  taken or omitted to be taken by Creditor  pursuant  thereto or in
connection therewith.

         8. Payment and Performance by Guarantor.  In each event that all or any
portion of the  Indebtedness  shall  become due and remain  unpaid  (however the
maturity may have occurred),  Guarantor will, upon demand, pay the amount due to
Creditor  (other than any  interest  as may be in excess of the  maximum  lawful
amount),  without notice having been given to Guarantor  previous to such demand
of the  acceptance  by Creditor of this Guaranty or of the creating or incurring
of  such  indebtedness.  Guarantor  specifically  agrees  that it  shall  not be
necessary or required in order to enforce any  obligations  under this  Guaranty
that Creditor has made demand for payment upon Debtor or any other person liable
on the Indebtedness for payment thereof or for performance of the Obligations or
has presented  same for payment by Debtor or any other person liable  thereon or
has made protest thereof or has given notice to Debtor or any other party liable
thereon of the maturity or nonpayment of the Indebtedness.  All amounts becoming
payable  by  Guarantor  to  Creditor  under  this  Guaranty  shall be payable at
Creditor's  address  stated  below,  or at such  other  address as  directed  by
Creditor in written notice to Guarantor. All payments made upon the Indebtedness
at any time shall be deemed to have been paid by Debtor unless express notice in
writing is given to Creditor at the time of payment by Guarantor  that  Creditor
has been paid by Guarantor. Upon demand by Creditor,  Guarantor shall perform or
cause to be performed any or all of the Obligations.

         9. Suit on Guaranty.  Suit may be brought by Creditor against Guarantor
alone,  or jointly and  severally  against  Guarantor  and any one or more other
guarantors of the Indebtedness and/or Obligations,  without impairing the rights
of  Creditor  against  Debtor or other  guarantors  of the  Indebtedness  and/or
Obligations.

         10.      Costs of Collection.  Guarantor agrees to pay all costs of 
collection, including reasonable attorney's fees and expenses, if this Guaranty 
is placed in the hands of an attorney for collection or is collected through any
 court.

         11. Waiver by Guarantor.  Guarantor  specifically waives any notice (i)
of acceptance of this Guaranty by Creditor,  (ii) of the creation,  advancement,
increase,   existence,   renewal,  extension,   modification,   refinancing,  or
rearrangement  of  the  Indebtedness,  or any  indulgence  with  respect  to the
Indebtedness,  or any part  thereof,  (iii) of  nonpayment  thereof  or  default
thereon or in the  performance  of the  Obligations,  and (iv) of any amendment,
modification, or restatement of all or any of the Obligations.  Guarantor waives
grace,  demand,  protest,  presentment,  and notice of intent to accelerate  the
maturity of the  Indebtedness,  notice of  acceleration  of the  maturity of the
Indebtedness,  demand, protest, or presentment with respect to the Indebtedness,
and Guarantor waives notice of the amount of the Indebtedness outstanding at any
time. Guarantor agrees that the

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 3

                                                                        Initials

<PAGE>





maturity of the Indebtedness, or any part thereof, may be accelerated,  renewed,
extended,  modified,  refinanced,  or rearranged or any other  indulgence may be
granted  with  respect  thereto by  Creditor  at its will or as may be agreed by
Debtor without notice to or further consent by Guarantor at any time.  Guarantor
agrees that  Guarantor  shall not be considered a "Debtor" as defined in Section
9.105 of the Texas Business and Commerce Code.

         12.  Guarantor's  Direct  Liability.  Creditor  shall not be  required,
before or as a condition of  enforcing  the  liability  of Guarantor  under this
Guaranty,  or requiring  payment of the  Indebtedness by Guarantor  hereunder or
performance  of the  Obligations,  or at any time  thereafter,  to do any of the
following: (a) proceed to obtain or assert a claim for personal judgment against
Debtor for the Indebtedness or make any effort at collection of the Indebtedness
from Debtor; (b) foreclose against or seek to realize upon the Collateral or any
security now or hereafter existing for the Indebtedness or Obligations; (c) file
suit or proceed to obtain or assert a claim for  personal  judgment  against any
other party (including any maker, guarantor,  endorser or surety) liable for the
Indebtedness or make any effort at collection of the Indebtedness  from any such
other party;  (d) exercise or assert any other right or remedy to which Creditor
is or may be entitled in connection with the  Indebtedness or Obligations or any
security or other  guaranty  therefor;  (e) assert or file any claim against the
assets  or  estate of Debtor or other  person  liable  for the  Indebtedness  or
Obligations,  or any part  thereof;  (f) take any action  against  Debtor or any
other person, to exhaust its remedies against endorsers, the Collateral or other
collateral  or security,  or to resort to any balance of any deposit  account or
credit on the books of Creditor in favor of Debtor or any other  person;  or (g)
pursue any other remedies  Creditor may have in connection with the Indebtedness
or Obligations.

         13.  Obligations  Not  Impaired.  Guarantor's  obligations  under  this
Guaranty  shall not be released,  diminished,  impaired,  reduced,  or adversely
affected,  and Guarantor  waives any common law,  equitable,  statutory or other
rights that Guarantor might otherwise have, as a result of any of the following:

                  (a) any full or partial  release of the  liability  of Debtor,
any other guarantor of the Indebtedness and/or Obligations,  or any other person
primarily or secondarily liable on the Indebtedness and/or  Obligations,  or any
part thereof (including any maker, endorser,  guarantor or surety), whether such
liability is direct or indirect,  joint, several, or joint and several, it being
recognized,  acknowledged  and agreed that  Guarantor may be required to pay the
Indebtedness and perform the Obligations in full without assistance of any other
party,  and  Guarantor  has not been induced to enter into this  Guaranty on the
basis of an  understanding  or agreement that other parties will at all times be
liable to pay the Indebtedness or perform the Obligations, or that Creditor will
look to other  parties  to pay the  Indebtedness  or  perform  the  Obligations;
provided,  however,  nothing in this  Guaranty  shall waive or  release,  either
expressly or impliedly, any rights of subrogation, reimbursement or contribution
that  Guarantor  may  have,  after  payment  in  full  of the  Indebtedness  and
performance of the Obligations,  against others liable under the Indebtedness or
for  performance of the  Obligations,  but  Guarantor's  rights of  subrogation,
reimbursement  and contribution  are secondary,  subordinate and inferior to the
rights and claims of Creditor;

                  (b) the voluntary or  involuntary  liquidation,  sale or other
disposition  of  all  or  substantially  all of the  assets  of  Debtor,  or any
receivership,   insolvency,   bankruptcy,   reorganization   or  other   similar
proceedings affecting Debtor or any of its assets;

                  (c) any  impairment,  modification,  release or  limitation of
liability  of  Debtor,   or  stay  of  foreclosure  or  other  lien  enforcement
proceedings  against  Debtor,  or  Debtor's  property,  or  Debtor's  estate  in
bankruptcy, or any modification, discharge or extension of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 4

                                                                        Initials

<PAGE>





resulting  from the operation of any present or future  provision of the Federal
Bankruptcy Code or other  bankruptcy laws, or from the decision of any court, it
being recognized,  acknowledged and agreed that Guarantor shall remain liable on
the Indebtedness and the Obligations, notwithstanding any act, omission or thing
which might,  but for the  provisions  hereof,  otherwise  operate as a legal or
equitable discharge of Guarantor;

                  (d)      any release of, subordination of, or substitution of
any security or other guaranty now or hereafter held by Creditor for payment of 
the Indebtedness and performance of the Obligations, or of any part thereof;

                  (e)      Creditor's failure to use diligence or care in 
preserving the liability of any person on the Indebtedness or the Obligations, 
or in bringing suit to enforce collection of the Indebtedness or performance of 
the Obligations;

                  (f)      the addition of another guarantor or guarantors of 
the Indebtedness or Obligations;

                  (g)      the substitution or withdrawal of collateral or 
release of security;

                  (h)      any renewal, extension, modification, alteration, 
refinancing  or rearrangement of or any other indulgence with respect to the 
Indebtedness or Obligations, or any part thereof;

                  (i) the exercise, failure to exercise, delay, omission or lack
of diligence or care by Creditor in exercising any right or power conferred upon
Creditor in this Guaranty,  the Note, or any  Transaction  Document  evidencing,
securing or relating to the Note or by law or in equity;

                  (j)  Debtor's  not  being  liable  for  the   Indebtedness  or
performance of the Obligations  because the act of creating the  Indebtedness or
Obligations is ultra vires, or the officers or persons creating the Indebtedness
or  Obligations  acted in  excess  of their  authority,  or for any  reason  the
Indebtedness or Obligations cannot be enforced against Debtor;

                  (k) any payment by Debtor to Creditor if such  payment is held
to constitute a preference under the Federal Bankruptcy Code or other bankruptcy
laws, or if for any other reason  Creditor is required to refund such payment to
Debtor or pay the amount thereof to any other party;

                  (l)      Guarantor's being or becoming liable for any 
indebtedness owing by Debtor to Creditor, by endorsement or otherwise, other 
than under this Guaranty; or

                  (m) the invalidity,  illegality or  unenforceability of all or
any part of the  Indebtedness,  for any  reason  whatsoever,  including  without
limitation the fact that the Note or other Transaction  Documents  pertaining to
the  Indebtedness or Obligations  have been forged or otherwise are irregular or
not genuine or authentic.

         14. Application of Payments.  If Creditor should collect or receive any
payments  from  any  person  other  than  Guarantor,  or  funds  which  are  not
specifically  required by law or  agreement  to be applied to the  Indebtedness,
then  Creditor may, in Creditor's  sole  discretion,  apply such payments to any
indebtedness  of Debtor  other  than the  Indebtedness.  Guarantor  agrees  that
Creditor  may apply  payments or other funds  received by Creditor  from Debtor,
from any other party obligated on the Indebtedness,  from the liquidation of any
collateral now or hereafter securing the Indebtedness, or from any other source,
including without limitation, insurance proceeds and

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 5

                                                                        Initials

<PAGE>





condemnation,  to the  Indebtedness  in any manner or order as Creditor may deem
appropriate in its sole and absolute discretion.

         15. Collection of Indebtedness. Guarantor expressly waives any right to
the  benefit  of or to require or control  application  of any  security  or the
proceeds  of any  security  now  existing or  hereafter  obtained by Creditor as
security for the  Indebtedness,  or any part  thereof,  and agrees that Creditor
shall have no duty to apply to the  Indebtedness  any monies,  payments or other
property at any time  received by or paid to or in the  possession  of Creditor,
except  as  Creditor  shall   determine  in  its  sole   discretion.   Guarantor
specifically agrees that Guarantor shall not have any recourse or action against
Creditor by reason of any action Creditor may take or omit to take in connection
with the  Indebtedness  or  Obligations,  the  collection of any sums or amounts
herein  mentioned,  or in connection with any security for or any other guaranty
of the Indebtedness and/or Obligations.

         16.  Subordination.  Guarantor  subordinates all indebtedness  owing to
Guarantor from Debtor to the Indebtedness.  Guarantor  further  subordinates any
liens or security  interest it may have in the  collateral or security of Debtor
(or any other  party) to the liens and  security  interests in favor of Creditor
securing the Indebtedness  and the  Obligations.  Guarantor agrees not to accept
any  payments  or  satisfaction  of any kind of any  indebtedness  of  Debtor to
Guarantor.  If Guarantor  should  receive any such payment or  satisfaction  for
indebtedness  of Debtor to Guarantor in violation of the above terms,  Guarantor
agrees to deliver the payment or satisfaction to Creditor,  and until delivered,
Guarantor agrees to hold the same in trust for Creditor.

         17. Notice of Litigation, Claims, and Financial Change. Guarantor shall
promptly  inform Creditor of any litigation  against  Guarantor or affecting any
security for the  Indebtedness or Obligations  which,  if determined  adversely,
might have a material  adverse effect upon the financial  condition of Guarantor
or upon  such  security  or might  cause a default  under  any of the  documents
evidencing, securing, or governing the Indebtedness or Obligations, any claim or
controversy  which might  become the  subject of  litigation,  and any  material
adverse change in the financial condition of Guarantor.

         18. Usury  Disclaimer.  No provision  herein or in any promissory note,
security  instrument,  or any other  Transaction  Document executed by Debtor or
Guarantor  evidencing the  Indebtedness  shall be construed to be or to create a
contract by  Guarantor to pay, as  consideration  for the use,  forbearance,  or
detention of money,  interest in excess of the rate or amount allowed by law. If
any excess of  interest in such  respect is  provided  for herein or in any such
promissory note, security  instrument,  or any other Transaction  Document,  the
provisions of this Section shall govern,  and neither Debtor nor Guarantor shall
be  obligated  to pay the amount of such  interest  to the extent  that it is in
excess of the amount  permitted by applicable  law. The intention of the parties
is to conform  strictly to the usury laws now in force, and all Promissory Notes
and  Transaction  Documents  executed  by Debtor  or  Guarantor  evidencing  the
Indebtedness  or  Obligations  shall be held  subject to reduction to the amount
allowed under said usury laws as now or hereafter construed by the courts having
jurisdiction.

         19.  Transferability.  This Guaranty is intended for and shall inure to
the benefit of Creditor  and each and every other  person who shall from time to
time be or become the owner or holder of any of the  Indebtedness,  and each and
every  reference  herein to  Creditor  shall also  include and refer to each and
every  successor  or assignee of Creditor at any time holding or owning any part
of or  interest  in any  part  of  the  Indebtedness.  This  Guaranty  shall  be
transferable  and  negotiable,  with the same  force and  effect and to the same
extent that the Indebtedness is transferable, it being understood and stipulated
that upon the assignment or transfer by Creditor of any of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 6

                                                                        Initials

<PAGE>





the legal  holder or owner of the  Indebtedness  (or part  thereof  or  interest
therein  transferred  or  assigned by  Creditor)  shall  also,  unless  provided
otherwise by Creditor in its transfer or  assignment,  have and may exercise all
of the rights  granted to Creditor under this Guaranty to the extent of the part
of or  interest in the  Indebtedness  assigned or  transferred  to said  person.
Guarantor expressly waives notice of transfer or assignment of the Indebtedness,
or any part  thereof,  or of the rights of Creditor  hereunder.  Notwithstanding
anything in this Section to the contrary,  all  Indebtedness  and Obligations to
Creditor  shall be paid and  performed  in full  first,  before any  assignee or
transferee shall receive any benefits of this Guaranty.

         20. Information Concerning Guarantor. Guarantor acknowledges and agrees
that Creditor may transfer the Indebtedness or partial  interests therein to one
or  more  transferees  or  participants.   Guarantor   authorizes   Creditor  to
disseminate  any  information  Creditor  has  pertaining  to  the  Indebtedness,
including,  without  limitation,  credit  information on Guarantor,  to any such
transferee or participant or prospective transferee or participant.

         21.      Binding on Others.  This Guaranty shall be binding upon 
Guarantor and Guarantor's heirs, legal representative, personal representatives,
 executors, administrators, successors and assigns.

         22. Modification or Consent. No modification,  consent or waiver of any
provision of this Guaranty shall be effective unless the  modification,  consent
or waiver is in writing and signed by an officer of Creditor,  and then shall be
effective only in the specific  instance and for the purpose for which given. No
notice to or demand on Guarantor in any case shall, of itself, entitle Guarantor
to any other or further notice or demand in similar or other  circumstances.  No
delay or  omission  by  Creditor  in  exercising  any power or right  under this
Guaranty  shall  impair  any such  right or  power or be  construed  as a waiver
thereof or any acquiescence therein, nor shall any single or partial exercise of
any such power preclude other or further  exercise  thereof,  or the exercise of
any other  right or power  under  this  Guaranty.  All rights  and  remedies  of
Creditor  under this  Guaranty are  cumulative  of each other and of every other
right or remedy which  Creditor may otherwise  have at law or in equity or under
any other  contract  or  document,  and the  exercise  of one or more  rights or
remedies shall not prejudice or impair the concurrent or subsequent  exercise of
other rights or remedies.

         23. Waiver of Certain Statutory Provisions. Guarantor hereby waives all
rights to which  Guarantor  may be or might  otherwise  become  entitled to with
respect to the  provisions of Sections 34.02 and 34.03 of the Texas Business and
Commerce Code, as amended,  and agrees that the rights of Guarantor  pursuant to
the  provisions  of Section  34.04 of the Texas  Business and Commerce  Code, as
amended,  shall be  subject  to,  secondary,  subordinate  and  inferior  in all
respects to the rights of Creditor pursuant to this Guaranty.

         24.  Notices.  Any notice or demand to Guarantor may be given and shall
conclusively  be deemed and  considered to have been given and received upon the
deposit  thereof,  in  writing,  in the United  States  mail,  duly  stamped and
addressed to Guarantor at Guarantor's  address stated below,  but actual notice,
however  given or  received,  shall  always  be  effective.  The last  preceding
sentence  shall not be  construed  in  anywise to affect or impair any waiver of
notice or demand herein  provided or to require giving of notice or demand to or
upon Guarantor in any situation or for any reason.  Creditor's  and  Guarantor's
respective addresses are:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 7

                                                                        Initials

<PAGE>




                           Creditor:   American Physicians Service Group, Inc.
                                       Attn: Mr. Duane K. Boyd
                                       1301 Capital of Texas Hwy., Suite C-300
                                       Austin, Texas, 78746

                           Guarantor:  Larco Environmental Services, Inc.
                                       Attn:
                                       1401 South Waldron, Suite 201
                                       Fort Smith, Arkansas 72903

         25.      Governing Law and Place of Performance.  GUARANTOR AGREES THAT
THIS GUARANTY IS GOVERNED BY THE LAWS OF THE UNITED STATES AND THE STATE OF 
TEXAS.  This Guaranty is performable in Travis County, Texas, and Guarantor 
hereby waives the right to be sued elsewhere.

         26.      Headings.  Section headings of this Guaranty are inserted for 
convenience of reference only, and shall not alter, define, or be used in 
construing the text of such sections.

         27.  Pronouns.  As used herein and when  required by the context,  each
number  (singular and plural)  shall include all numbers,  and each gender shall
include all genders, and unless the context otherwise requires the word "person"
or  "party"  shall  include   "person,   corporation,   firm,   partnership   or
association".

         28.     Notice of Invalidity of Oral Agreements. THIS WRITTEN AGREEMENT
REPRESENTS THE FINAL  AGREEMENT  BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS,  OR  SUBSEQUENT  ORAL  AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         EXECUTED this 30th day of September, 1996.

                                       GUARANTOR:

                                       Larco Environmental Services, Inc.
                                       (an Louisiana corporation)



                                       By:
                                      Name:
                                     Title:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 8

<PAGE>


GUARANTY AGREEMENT


         THIS  GUARANTY  AGREEMENT  ("Guaranty")  is made as of the  30th day of
September, 1996, by KR Industrial Services of Alabama, Inc., an Alabama 
corporation ("Guarantor"), for the benefit of American Physicians Service Group,
Inc., a Texas corporation ("Creditor").

         FOR VALUE  RECEIVED,  the receipt and  sufficiency  of which  Guarantor
acknowledges,  Guarantor hereby jointly, severally, absolutely, irrevocably, and
unconditionally guarantees to Creditor (a) the prompt payment and performance of
(i) any  and all  sums  becoming  due and  payable  pursuant  to the  Stock  Put
Agreement dated September 30, 1996,  executed by Exsorbet  Industries,  Inc., an
Idaho corporation ("Debtor") and Creditor, including without limitation any sums
which may hereafter become due and owing on the Promissory Note (the "Note"), in
the original principal amount of $3,300,000.00,  which may be executed by Debtor
pursuant  to the Stock Put  Agreement,  and  payable  to the order of  Creditor,
including  without  limitation  any and all  interest  thereon  (other than such
interest as may be in excess of the maximum  lawful  amount),  late  charges (if
any), and costs of collection  (including  reasonable attorney's fees); (ii) all
other sums and indebtedness described in or secured by the Transaction Documents
(as defined  below);  (iii) any and all other sums  becoming  due and payable by
Debtor to  Creditor as a result of  advances  made by  Creditor  pursuant to the
terms of the Transaction  Documents,  including without limitation the repayment
of any future  advances made by Creditor to Debtor and the repayment of any sums
advanced for the protection of Creditor's  security  pursuant to the Transaction
Documents; (iv) any and all renewals, extensions, replacements,  rearrangements,
substitutions,  or  modifications  of  all  or  any  part  of  the  Indebtedness
(collectively,  the  "Indebtedness"),  and  (b) the  performance  of any and all
obligations,  warranties,  representations,  covenants  and  agreements  made by
Debtor in connection with the Transaction Documents, as the same may be amended,
modified, or restated from time to time (the "Obligations").

         2. Transaction Documents.  The term "Transaction Documents" shall mean:
the Stock Put Agreement dated September 30, 1996, executed by and between Debtor
and Creditor;  the Note (if and when executed pursuant to the terms of the Stock
Put  Agreement);  the  Warrant  executed  by  Debtor in favor of  Creditor;  the
Shareholder Rights Agreement executed by Debtor and Creditor; the Assignment and
Security Agreement dated September 30, 1996,  executed by and between Debtor and
Creditor,  and all other security agreements,  assignments,  and other documents
executed  by Debtor  for the  benefit of  Creditor  to secure  the  payment  and
performance of the Indebtedness and Obligations and creating a lien and security
interest  against  the  real  or  personal   property   described  therein  (the
"Collateral");  any other Guaranty  Agreements or surety agreements  executed in
favor of Creditor and guaranteeing the Note; and any other agreement,  document,
or instrument  executed by Debtor or any other  guarantor in connection with the
transaction evidenced by the Stock Put Agreement.

         3.       Nature of Guaranty.  Guarantor agrees that this Guaranty is an
absolute, complete, continuing, unconditional and irrevocable guaranty of 
payment and performance of the Indebtedness and the Obligations.

         4.       Renewals and Extensions.  This Guaranty applies to, and the 
Indebtedness shall additionally mean and refer to, any and all renewals, 
extensions, modifications, alterations, refinancings and rearrangements of all 
or any part of the Indebtedness.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 1

                                                                       Initials

<PAGE>





         5.       Representations and Warranties.  Guarantor hereby represents 
and warrants the following to Creditor:

                  (a) Guarantor may  reasonably  expect to benefit,  directly or
indirectly,  from the making of this  Guaranty  and from and from each and every
renewal, extension, modification,  alteration, refinancing, and rearrangement of
all or any  part  of the  Indebtedness,  the  release  of  collateral  or  other
relinquishment  of legal  rights  made or  granted  or to be made or  granted by
Creditor to Debtor and the amendment or modification of the terms and conditions
of the Obligations,  and the Board of Directors of Guarantor has determined that
Guarantor may reasonably be expected to benefit,  directly or  indirectly,  from
the making of this Guaranty and has adopted resolutions stating the same; and

                  (b) Guarantor is familiar with, and has independently reviewed
the books and  records  regarding,  the  financial  condition  of Debtor  and is
familiar  with the value of any and all  collateral  intended to be security for
the payment of all or any part of the Indebtedness or for the performance of all
or any of the Obligations;  provided,  however, Guarantor is not relying on such
financial  condition or collateral as an inducement to enter into this Guaranty;
and

                  (c)  Guarantor  has adequate  means to obtain from Debtor on a
continuing basis  information  concerning the financial  condition of Debtor and
Guarantor  is not relying on Creditor to provide such  information  to Guarantor
either now or in the future; and

                  (d) Guarantor has the power and authority to execute, deliver,
and  perform  this  Guaranty  and any other  agreements  executed  by  Guarantor
contemporaneously herewith, and the execution, delivery, and performance of this
Guaranty  and any  other  agreements  executed  by  Guarantor  contemporaneously
herewith do not and will not violate (i) any  agreement or  instrument  to which
Guarantor  is  a  party,  (ii)  any  law,  rule,  regulation  or  order  of  any
governmental  authority to which Guarantor is subject,  or (iii) its articles or
certificate of incorporation or bylaw; and

                  (e)      neither Creditor nor any other party has made any 
representation, warranty or statement to Guarantor in order to induce Guarantor 
to execute this Guaranty; and

                  (f) the financial  statements and other financial  information
regarding Guarantor heretofore and hereafter delivered to Creditor are and shall
be true and correct in all material  respects and fairly  present the  financial
position of Guarantor as of the dates  thereof,  and no material  adverse change
has occurred in the financial  condition of Guarantor reflected in the financial
statements  and  other  financial  information  regarding  Guarantor  heretofore
delivered to Creditor since the date of the last statement thereof; and

                  (g) as of the date  hereof,  and after  giving  effect to this
Guaranty and the  obligations  evidenced  hereby,  (i)  Guarantor is and will be
solvent,  (ii) the fair saleable  value of  Guarantor's  assets exceeds and will
continue to exceed its liabilities (both fixed and contingent),  (iii) Guarantor
is and will  continue  to be able to pay its debts as they  mature,  and (iv) if
Guarantor  is not an  individual,  Guarantor  has  and  will  continue  to  have
sufficient  capital to carry on its business and all  businesses  in which it is
about to engage.

         6.       Inducement to Creditor.  Guarantor acknowledges that this 
Guaranty is given to induce Creditor to extend credit to Debtor which would not
be extended except in reliance upon this Guaranty.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 2

                                                                        Initials

<PAGE>







         7. Terms of Guaranty and Indebtedness  and  Obligations.  This Guaranty
contains the entire  agreement  between  Guarantor  and Creditor with respect to
Guarantor's  guarantee of the Indebtedness and Obligations;  provided,  however,
this Guaranty is in addition to and does not replace, cancel, modify, impair, or
affect any other  guaranty  executed by Guarantor  and now or hereafter  held by
Creditor   that   relates  to  Debtor  or  any  other   person  or  entity.   No
representations  or agreements have been made by Creditor to Guarantor except as
contained in this Guaranty.  Guarantor has read and understands the implications
of this Guaranty.  Guarantor  agrees to the terms,  provisions and conditions of
the Note,  the  Transaction  Documents  which may have been or may  hereafter be
executed by Debtor or other persons evidencing,  securing, or in connection with
the Indebtedness or Obligations or any part thereof, and agrees that Guarantor's
liability shall in no manner be affected,  impaired or released by reason of any
term,  provision,  or condition of the Note, the Transaction Documents or by the
failure,  refusal,  or omission of Creditor to enforce or observe any of same or
by any action  taken or omitted to be taken by Creditor  pursuant  thereto or in
connection therewith.

         8. Payment and Performance by Guarantor.  In each event that all or any
portion of the  Indebtedness  shall  become due and remain  unpaid  (however the
maturity may have occurred),  Guarantor will, upon demand, pay the amount due to
Creditor  (other than any  interest  as may be in excess of the  maximum  lawful
amount),  without notice having been given to Guarantor  previous to such demand
of the  acceptance  by Creditor of this Guaranty or of the creating or incurring
of  such  indebtedness.  Guarantor  specifically  agrees  that it  shall  not be
necessary or required in order to enforce any  obligations  under this  Guaranty
that Creditor has made demand for payment upon Debtor or any other person liable
on the Indebtedness for payment thereof or for performance of the Obligations or
has presented  same for payment by Debtor or any other person liable  thereon or
has made protest thereof or has given notice to Debtor or any other party liable
thereon of the maturity or nonpayment of the Indebtedness.  All amounts becoming
payable  by  Guarantor  to  Creditor  under  this  Guaranty  shall be payable at
Creditor's  address  stated  below,  or at such  other  address as  directed  by
Creditor in written notice to Guarantor. All payments made upon the Indebtedness
at any time shall be deemed to have been paid by Debtor unless express notice in
writing is given to Creditor at the time of payment by Guarantor  that  Creditor
has been paid by Guarantor. Upon demand by Creditor,  Guarantor shall perform or
cause to be performed any or all of the Obligations.

         9. Suit on Guaranty.  Suit may be brought by Creditor against Guarantor
alone,  or jointly and  severally  against  Guarantor  and any one or more other
guarantors of the Indebtedness and/or Obligations,  without impairing the rights
of  Creditor  against  Debtor or other  guarantors  of the  Indebtedness  and/or
Obligations.

         10.      Costs of Collection.  Guarantor agrees to pay all costs of 
collection, including reasonable attorney's fees and expenses, if this Guaranty 
is placed in the hands of an attorney for collection or is collected through any
 court.

         11. Waiver by Guarantor.  Guarantor  specifically waives any notice (i)
of acceptance of this Guaranty by Creditor,  (ii) of the creation,  advancement,
increase,   existence,   renewal,  extension,   modification,   refinancing,  or
rearrangement  of  the  Indebtedness,  or any  indulgence  with  respect  to the
Indebtedness,  or any part  thereof,  (iii) of  nonpayment  thereof  or  default
thereon or in the  performance  of the  Obligations,  and (iv) of any amendment,
modification, or restatement of all or any of the Obligations.  Guarantor waives
grace,  demand,  protest,  presentment,  and notice of intent to accelerate  the
maturity of the  Indebtedness,  notice of  acceleration  of the  maturity of the
Indebtedness,  demand, protest, or presentment with respect to the Indebtedness,
and Guarantor waives notice of the amount of the Indebtedness outstanding at any
time. Guarantor agrees that the

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GUARANTY AGREEMENT                                   Page 3

                                                                        Initials

<PAGE>





maturity of the Indebtedness, or any part thereof, may be accelerated,  renewed,
extended,  modified,  refinanced,  or rearranged or any other  indulgence may be
granted  with  respect  thereto by  Creditor  at its will or as may be agreed by
Debtor without notice to or further consent by Guarantor at any time.  Guarantor
agrees that  Guarantor  shall not be considered a "Debtor" as defined in Section
9.105 of the Texas Business and Commerce Code.

         12.  Guarantor's  Direct  Liability.  Creditor  shall not be  required,
before or as a condition of  enforcing  the  liability  of Guarantor  under this
Guaranty,  or requiring  payment of the  Indebtedness by Guarantor  hereunder or
performance  of the  Obligations,  or at any time  thereafter,  to do any of the
following: (a) proceed to obtain or assert a claim for personal judgment against
Debtor for the Indebtedness or make any effort at collection of the Indebtedness
from Debtor; (b) foreclose against or seek to realize upon the Collateral or any
security now or hereafter existing for the Indebtedness or Obligations; (c) file
suit or proceed to obtain or assert a claim for  personal  judgment  against any
other party (including any maker, guarantor,  endorser or surety) liable for the
Indebtedness or make any effort at collection of the Indebtedness  from any such
other party;  (d) exercise or assert any other right or remedy to which Creditor
is or may be entitled in connection with the  Indebtedness or Obligations or any
security or other  guaranty  therefor;  (e) assert or file any claim against the
assets  or  estate of Debtor or other  person  liable  for the  Indebtedness  or
Obligations,  or any part  thereof;  (f) take any action  against  Debtor or any
other person, to exhaust its remedies against endorsers, the Collateral or other
collateral  or security,  or to resort to any balance of any deposit  account or
credit on the books of Creditor in favor of Debtor or any other  person;  or (g)
pursue any other remedies  Creditor may have in connection with the Indebtedness
or Obligations.

         13.  Obligations  Not  Impaired.  Guarantor's  obligations  under  this
Guaranty  shall not be released,  diminished,  impaired,  reduced,  or adversely
affected,  and Guarantor  waives any common law,  equitable,  statutory or other
rights that Guarantor might otherwise have, as a result of any of the following:

                  (a) any full or partial  release of the  liability  of Debtor,
any other guarantor of the Indebtedness and/or Obligations,  or any other person
primarily or secondarily liable on the Indebtedness and/or  Obligations,  or any
part thereof (including any maker, endorser,  guarantor or surety), whether such
liability is direct or indirect,  joint, several, or joint and several, it being
recognized,  acknowledged  and agreed that  Guarantor may be required to pay the
Indebtedness and perform the Obligations in full without assistance of any other
party,  and  Guarantor  has not been induced to enter into this  Guaranty on the
basis of an  understanding  or agreement that other parties will at all times be
liable to pay the Indebtedness or perform the Obligations, or that Creditor will
look to other  parties  to pay the  Indebtedness  or  perform  the  Obligations;
provided,  however,  nothing in this  Guaranty  shall waive or  release,  either
expressly or impliedly, any rights of subrogation, reimbursement or contribution
that  Guarantor  may  have,  after  payment  in  full  of the  Indebtedness  and
performance of the Obligations,  against others liable under the Indebtedness or
for  performance of the  Obligations,  but  Guarantor's  rights of  subrogation,
reimbursement  and contribution  are secondary,  subordinate and inferior to the
rights and claims of Creditor;

                  (b) the voluntary or  involuntary  liquidation,  sale or other
disposition  of  all  or  substantially  all of the  assets  of  Debtor,  or any
receivership,   insolvency,   bankruptcy,   reorganization   or  other   similar
proceedings affecting Debtor or any of its assets;

                  (c) any  impairment,  modification,  release or  limitation of
liability  of  Debtor,   or  stay  of  foreclosure  or  other  lien  enforcement
proceedings  against  Debtor,  or  Debtor's  property,  or  Debtor's  estate  in
bankruptcy, or any modification, discharge or extension of the Indebtedness

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GUARANTY AGREEMENT                                   Page 4

                                                                        Initials

<PAGE>





resulting  from the operation of any present or future  provision of the Federal
Bankruptcy Code or other  bankruptcy laws, or from the decision of any court, it
being recognized,  acknowledged and agreed that Guarantor shall remain liable on
the Indebtedness and the Obligations, notwithstanding any act, omission or thing
which might,  but for the  provisions  hereof,  otherwise  operate as a legal or
equitable discharge of Guarantor;

                  (d)      any release of, subordination of, or substitution of
any security or other guaranty now or hereafter held by Creditor for payment of 
the Indebtedness and performance of the Obligations, or of any part thereof;

                  (e)      Creditor's failure to use diligence or care in 
preserving the liability of any person on the Indebtedness or the Obligations, 
or in bringing suit to enforce collection of the Indebtedness or performance of 
the Obligations;

                  (f)      the addition of another guarantor or guarantors of 
the Indebtedness or Obligations;

                  (g)      the substitution or withdrawal of collateral or 
release of security;

                  (h)      any renewal, extension, modification, alteration, 
refinancing  or rearrangement of or any other indulgence with respect to the 
Indebtedness or Obligations, or any part thereof;

                  (i) the exercise, failure to exercise, delay, omission or lack
of diligence or care by Creditor in exercising any right or power conferred upon
Creditor in this Guaranty,  the Note, or any  Transaction  Document  evidencing,
securing or relating to the Note or by law or in equity;

                  (j)  Debtor's  not  being  liable  for  the   Indebtedness  or
performance of the Obligations  because the act of creating the  Indebtedness or
Obligations is ultra vires, or the officers or persons creating the Indebtedness
or  Obligations  acted in  excess  of their  authority,  or for any  reason  the
Indebtedness or Obligations cannot be enforced against Debtor;

                  (k) any payment by Debtor to Creditor if such  payment is held
to constitute a preference under the Federal Bankruptcy Code or other bankruptcy
laws, or if for any other reason  Creditor is required to refund such payment to
Debtor or pay the amount thereof to any other party;

                  (l)      Guarantor's being or becoming liable for any 
indebtedness owing by Debtor to Creditor, by endorsement or otherwise, other 
than under this Guaranty; or

                  (m) the invalidity,  illegality or  unenforceability of all or
any part of the  Indebtedness,  for any  reason  whatsoever,  including  without
limitation the fact that the Note or other Transaction  Documents  pertaining to
the  Indebtedness or Obligations  have been forged or otherwise are irregular or
not genuine or authentic.

         14. Application of Payments.  If Creditor should collect or receive any
payments  from  any  person  other  than  Guarantor,  or  funds  which  are  not
specifically  required by law or  agreement  to be applied to the  Indebtedness,
then  Creditor may, in Creditor's  sole  discretion,  apply such payments to any
indebtedness  of Debtor  other  than the  Indebtedness.  Guarantor  agrees  that
Creditor  may apply  payments or other funds  received by Creditor  from Debtor,
from any other party obligated on the Indebtedness,  from the liquidation of any
collateral now or hereafter securing the Indebtedness, or from any other source,
including without limitation, insurance proceeds and

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 5

                                                                        Initials

<PAGE>





condemnation,  to the  Indebtedness  in any manner or order as Creditor may deem
appropriate in its sole and absolute discretion.

         15. Collection of Indebtedness. Guarantor expressly waives any right to
the  benefit  of or to require or control  application  of any  security  or the
proceeds  of any  security  now  existing or  hereafter  obtained by Creditor as
security for the  Indebtedness,  or any part  thereof,  and agrees that Creditor
shall have no duty to apply to the  Indebtedness  any monies,  payments or other
property at any time  received by or paid to or in the  possession  of Creditor,
except  as  Creditor  shall   determine  in  its  sole   discretion.   Guarantor
specifically agrees that Guarantor shall not have any recourse or action against
Creditor by reason of any action Creditor may take or omit to take in connection
with the  Indebtedness  or  Obligations,  the  collection of any sums or amounts
herein  mentioned,  or in connection with any security for or any other guaranty
of the Indebtedness and/or Obligations.

         16.  Subordination.  Guarantor  subordinates all indebtedness  owing to
Guarantor from Debtor to the Indebtedness.  Guarantor  further  subordinates any
liens or security  interest it may have in the  collateral or security of Debtor
(or any other  party) to the liens and  security  interests in favor of Creditor
securing the Indebtedness  and the  Obligations.  Guarantor agrees not to accept
any  payments  or  satisfaction  of any kind of any  indebtedness  of  Debtor to
Guarantor.  If Guarantor  should  receive any such payment or  satisfaction  for
indebtedness  of Debtor to Guarantor in violation of the above terms,  Guarantor
agrees to deliver the payment or satisfaction to Creditor,  and until delivered,
Guarantor agrees to hold the same in trust for Creditor.

         17. Notice of Litigation, Claims, and Financial Change. Guarantor shall
promptly  inform Creditor of any litigation  against  Guarantor or affecting any
security for the  Indebtedness or Obligations  which,  if determined  adversely,
might have a material  adverse effect upon the financial  condition of Guarantor
or upon  such  security  or might  cause a default  under  any of the  documents
evidencing, securing, or governing the Indebtedness or Obligations, any claim or
controversy  which might  become the  subject of  litigation,  and any  material
adverse change in the financial condition of Guarantor.

         18. Usury  Disclaimer.  No provision  herein or in any promissory note,
security  instrument,  or any other  Transaction  Document executed by Debtor or
Guarantor  evidencing the  Indebtedness  shall be construed to be or to create a
contract by  Guarantor to pay, as  consideration  for the use,  forbearance,  or
detention of money,  interest in excess of the rate or amount allowed by law. If
any excess of  interest in such  respect is  provided  for herein or in any such
promissory note, security  instrument,  or any other Transaction  Document,  the
provisions of this Section shall govern,  and neither Debtor nor Guarantor shall
be  obligated  to pay the amount of such  interest  to the extent  that it is in
excess of the amount  permitted by applicable  law. The intention of the parties
is to conform  strictly to the usury laws now in force, and all Promissory Notes
and  Transaction  Documents  executed  by Debtor  or  Guarantor  evidencing  the
Indebtedness  or  Obligations  shall be held  subject to reduction to the amount
allowed under said usury laws as now or hereafter construed by the courts having
jurisdiction.

         19.  Transferability.  This Guaranty is intended for and shall inure to
the benefit of Creditor  and each and every other  person who shall from time to
time be or become the owner or holder of any of the  Indebtedness,  and each and
every  reference  herein to  Creditor  shall also  include and refer to each and
every  successor  or assignee of Creditor at any time holding or owning any part
of or  interest  in any  part  of  the  Indebtedness.  This  Guaranty  shall  be
transferable  and  negotiable,  with the same  force and  effect and to the same
extent that the Indebtedness is transferable, it being understood and stipulated
that upon the assignment or transfer by Creditor of any of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 6

                                                                        Initials

<PAGE>





the legal  holder or owner of the  Indebtedness  (or part  thereof  or  interest
therein  transferred  or  assigned by  Creditor)  shall  also,  unless  provided
otherwise by Creditor in its transfer or  assignment,  have and may exercise all
of the rights  granted to Creditor under this Guaranty to the extent of the part
of or  interest in the  Indebtedness  assigned or  transferred  to said  person.
Guarantor expressly waives notice of transfer or assignment of the Indebtedness,
or any part  thereof,  or of the rights of Creditor  hereunder.  Notwithstanding
anything in this Section to the contrary,  all  Indebtedness  and Obligations to
Creditor  shall be paid and  performed  in full  first,  before any  assignee or
transferee shall receive any benefits of this Guaranty.

         20. Information Concerning Guarantor. Guarantor acknowledges and agrees
that Creditor may transfer the Indebtedness or partial  interests therein to one
or  more  transferees  or  participants.   Guarantor   authorizes   Creditor  to
disseminate  any  information  Creditor  has  pertaining  to  the  Indebtedness,
including,  without  limitation,  credit  information on Guarantor,  to any such
transferee or participant or prospective transferee or participant.

         21.      Binding on Others.  This Guaranty shall be binding upon 
Guarantor and Guarantor's heirs, legal representative, personal representatives,
 executors, administrators, successors and assigns.

         22. Modification or Consent. No modification,  consent or waiver of any
provision of this Guaranty shall be effective unless the  modification,  consent
or waiver is in writing and signed by an officer of Creditor,  and then shall be
effective only in the specific  instance and for the purpose for which given. No
notice to or demand on Guarantor in any case shall, of itself, entitle Guarantor
to any other or further notice or demand in similar or other  circumstances.  No
delay or  omission  by  Creditor  in  exercising  any power or right  under this
Guaranty  shall  impair  any such  right or  power or be  construed  as a waiver
thereof or any acquiescence therein, nor shall any single or partial exercise of
any such power preclude other or further  exercise  thereof,  or the exercise of
any other  right or power  under  this  Guaranty.  All rights  and  remedies  of
Creditor  under this  Guaranty are  cumulative  of each other and of every other
right or remedy which  Creditor may otherwise  have at law or in equity or under
any other  contract  or  document,  and the  exercise  of one or more  rights or
remedies shall not prejudice or impair the concurrent or subsequent  exercise of
other rights or remedies.

         23. Waiver of Certain Statutory Provisions. Guarantor hereby waives all
rights to which  Guarantor  may be or might  otherwise  become  entitled to with
respect to the  provisions of Sections 34.02 and 34.03 of the Texas Business and
Commerce Code, as amended,  and agrees that the rights of Guarantor  pursuant to
the  provisions  of Section  34.04 of the Texas  Business and Commerce  Code, as
amended,  shall be  subject  to,  secondary,  subordinate  and  inferior  in all
respects to the rights of Creditor pursuant to this Guaranty.

         24.  Notices.  Any notice or demand to Guarantor may be given and shall
conclusively  be deemed and  considered to have been given and received upon the
deposit  thereof,  in  writing,  in the United  States  mail,  duly  stamped and
addressed to Guarantor at Guarantor's  address stated below,  but actual notice,
however  given or  received,  shall  always  be  effective.  The last  preceding
sentence  shall not be  construed  in  anywise to affect or impair any waiver of
notice or demand herein  provided or to require giving of notice or demand to or
upon Guarantor in any situation or for any reason.  Creditor's  and  Guarantor's
respective addresses are:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 7

                                                                        Initials

<PAGE>




                           Creditor:   American Physicians Service Group, Inc.
                                       Attn: Mr. Duane K. Boyd
                                       1301 Capital of Texas Hwy., Suite C-300
                                       Austin, Texas, 78746

                           Guarantor:  KR Industrial Services of Alabama, Inc.
                                       Attn:
                                       1401 South Waldron, Suite 201
                                       Fort Smith, Arkansas 72903

         25.      Governing Law and Place of Performance.  GUARANTOR AGREES THAT
THIS GUARANTY IS GOVERNED BY THE LAWS OF THE UNITED STATES AND THE STATE OF 
TEXAS.  This Guaranty is performable in Travis County, Texas, and Guarantor 
hereby waives the right to be sued elsewhere.

         26.      Headings.  Section headings of this Guaranty are inserted for 
convenience of reference only, and shall not alter, define, or be used in 
construing the text of such sections.

         27.  Pronouns.  As used herein and when  required by the context,  each
number  (singular and plural)  shall include all numbers,  and each gender shall
include all genders, and unless the context otherwise requires the word "person"
or  "party"  shall  include   "person,   corporation,   firm,   partnership   or
association".

         28.     Notice of Invalidity of Oral Agreements. THIS WRITTEN AGREEMENT
REPRESENTS THE FINAL  AGREEMENT  BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS,  OR  SUBSEQUENT  ORAL  AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         EXECUTED this 30th day of September, 1996.

                                       GUARANTOR:

                                       KR Industrial Services of Alabama, Inc.
                                       (an Alabama corporation)



                                       By:
                                      Name:
                                     Title:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 8

<PAGE>

GUARANTY AGREEMENT


         THIS  GUARANTY  AGREEMENT  ("Guaranty")  is made as of the  30th day of
September, 1996, by Exsorbet Technial Services, Inc., an Arkansas corporation 
("Guarantor"), for the benefit of American Physicians Service Group, Inc., a 
Texas corporation ("Creditor").

         FOR VALUE  RECEIVED,  the receipt and  sufficiency  of which  Guarantor
acknowledges,  Guarantor hereby jointly, severally, absolutely, irrevocably, and
unconditionally guarantees to Creditor (a) the prompt payment and performance of
(i) any  and all  sums  becoming  due and  payable  pursuant  to the  Stock  Put
Agreement dated September 30, 1996,  executed by Exsorbet  Industries,  Inc., an
Idaho corporation ("Debtor") and Creditor, including without limitation any sums
which may hereafter become due and owing on the Promissory Note (the "Note"), in
the original principal amount of $3,300,000.00,  which may be executed by Debtor
pursuant  to the Stock Put  Agreement,  and  payable  to the order of  Creditor,
including  without  limitation  any and all  interest  thereon  (other than such
interest as may be in excess of the maximum  lawful  amount),  late  charges (if
any), and costs of collection  (including  reasonable attorney's fees); (ii) all
other sums and indebtedness described in or secured by the Transaction Documents
(as defined  below);  (iii) any and all other sums  becoming  due and payable by
Debtor to  Creditor as a result of  advances  made by  Creditor  pursuant to the
terms of the Transaction  Documents,  including without limitation the repayment
of any future  advances made by Creditor to Debtor and the repayment of any sums
advanced for the protection of Creditor's  security  pursuant to the Transaction
Documents; (iv) any and all renewals, extensions, replacements,  rearrangements,
substitutions,  or  modifications  of  all  or  any  part  of  the  Indebtedness
(collectively,  the  "Indebtedness"),  and  (b) the  performance  of any and all
obligations,  warranties,  representations,  covenants  and  agreements  made by
Debtor in connection with the Transaction Documents, as the same may be amended,
modified, or restated from time to time (the "Obligations").

         2. Transaction Documents.  The term "Transaction Documents" shall mean:
the Stock Put Agreement dated September 30, 1996, executed by and between Debtor
and Creditor;  the Note (if and when executed pursuant to the terms of the Stock
Put  Agreement);  the  Warrant  executed  by  Debtor in favor of  Creditor;  the
Shareholder Rights Agreement executed by Debtor and Creditor; the Assignment and
Security Agreement dated September 30, 1996,  executed by and between Debtor and
Creditor,  and all other security agreements,  assignments,  and other documents
executed  by Debtor  for the  benefit of  Creditor  to secure  the  payment  and
performance of the Indebtedness and Obligations and creating a lien and security
interest  against  the  real  or  personal   property   described  therein  (the
"Collateral");  any other Guaranty  Agreements or surety agreements  executed in
favor of Creditor and guaranteeing the Note; and any other agreement,  document,
or instrument  executed by Debtor or any other  guarantor in connection with the
transaction evidenced by the Stock Put Agreement.

         3.       Nature of Guaranty.  Guarantor agrees that this Guaranty is an
absolute, complete, continuing, unconditional and irrevocable guaranty of 
payment and performance of the Indebtedness and the Obligations.

         4.       Renewals and Extensions.  This Guaranty applies to, and the 
Indebtedness shall additionally mean and refer to, any and all renewals, 
extensions, modifications, alterations, refinancings and rearrangements of all 
or any part of the Indebtedness.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 1

                                                                       Initials

<PAGE>





         5.       Representations and Warranties.  Guarantor hereby represents 
and warrants the following to Creditor:

                  (a) Guarantor may  reasonably  expect to benefit,  directly or
indirectly,  from the making of this  Guaranty  and from and from each and every
renewal, extension, modification,  alteration, refinancing, and rearrangement of
all or any  part  of the  Indebtedness,  the  release  of  collateral  or  other
relinquishment  of legal  rights  made or  granted  or to be made or  granted by
Creditor to Debtor and the amendment or modification of the terms and conditions
of the Obligations,  and the Board of Directors of Guarantor has determined that
Guarantor may reasonably be expected to benefit,  directly or  indirectly,  from
the making of this Guaranty and has adopted resolutions stating the same; and

                  (b) Guarantor is familiar with, and has independently reviewed
the books and  records  regarding,  the  financial  condition  of Debtor  and is
familiar  with the value of any and all  collateral  intended to be security for
the payment of all or any part of the Indebtedness or for the performance of all
or any of the Obligations;  provided,  however, Guarantor is not relying on such
financial  condition or collateral as an inducement to enter into this Guaranty;
and

                  (c)  Guarantor  has adequate  means to obtain from Debtor on a
continuing basis  information  concerning the financial  condition of Debtor and
Guarantor  is not relying on Creditor to provide such  information  to Guarantor
either now or in the future; and

                  (d) Guarantor has the power and authority to execute, deliver,
and  perform  this  Guaranty  and any other  agreements  executed  by  Guarantor
contemporaneously herewith, and the execution, delivery, and performance of this
Guaranty  and any  other  agreements  executed  by  Guarantor  contemporaneously
herewith do not and will not violate (i) any  agreement or  instrument  to which
Guarantor  is  a  party,  (ii)  any  law,  rule,  regulation  or  order  of  any
governmental  authority to which Guarantor is subject,  or (iii) its articles or
certificate of incorporation or bylaw; and

                  (e)      neither Creditor nor any other party has made any 
representation, warranty or statement to Guarantor in order to induce Guarantor 
to execute this Guaranty; and

                  (f) the financial  statements and other financial  information
regarding Guarantor heretofore and hereafter delivered to Creditor are and shall
be true and correct in all material  respects and fairly  present the  financial
position of Guarantor as of the dates  thereof,  and no material  adverse change
has occurred in the financial  condition of Guarantor reflected in the financial
statements  and  other  financial  information  regarding  Guarantor  heretofore
delivered to Creditor since the date of the last statement thereof; and

                  (g) as of the date  hereof,  and after  giving  effect to this
Guaranty and the  obligations  evidenced  hereby,  (i)  Guarantor is and will be
solvent,  (ii) the fair saleable  value of  Guarantor's  assets exceeds and will
continue to exceed its liabilities (both fixed and contingent),  (iii) Guarantor
is and will  continue  to be able to pay its debts as they  mature,  and (iv) if
Guarantor  is not an  individual,  Guarantor  has  and  will  continue  to  have
sufficient  capital to carry on its business and all  businesses  in which it is
about to engage.

         6.       Inducement to Creditor.  Guarantor acknowledges that this 
Guaranty is given to induce Creditor to extend credit to Debtor which would not
be extended except in reliance upon this Guaranty.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 2

                                                                        Initials

<PAGE>







         7. Terms of Guaranty and Indebtedness  and  Obligations.  This Guaranty
contains the entire  agreement  between  Guarantor  and Creditor with respect to
Guarantor's  guarantee of the Indebtedness and Obligations;  provided,  however,
this Guaranty is in addition to and does not replace, cancel, modify, impair, or
affect any other  guaranty  executed by Guarantor  and now or hereafter  held by
Creditor   that   relates  to  Debtor  or  any  other   person  or  entity.   No
representations  or agreements have been made by Creditor to Guarantor except as
contained in this Guaranty.  Guarantor has read and understands the implications
of this Guaranty.  Guarantor  agrees to the terms,  provisions and conditions of
the Note,  the  Transaction  Documents  which may have been or may  hereafter be
executed by Debtor or other persons evidencing,  securing, or in connection with
the Indebtedness or Obligations or any part thereof, and agrees that Guarantor's
liability shall in no manner be affected,  impaired or released by reason of any
term,  provision,  or condition of the Note, the Transaction Documents or by the
failure,  refusal,  or omission of Creditor to enforce or observe any of same or
by any action  taken or omitted to be taken by Creditor  pursuant  thereto or in
connection therewith.

         8. Payment and Performance by Guarantor.  In each event that all or any
portion of the  Indebtedness  shall  become due and remain  unpaid  (however the
maturity may have occurred),  Guarantor will, upon demand, pay the amount due to
Creditor  (other than any  interest  as may be in excess of the  maximum  lawful
amount),  without notice having been given to Guarantor  previous to such demand
of the  acceptance  by Creditor of this Guaranty or of the creating or incurring
of  such  indebtedness.  Guarantor  specifically  agrees  that it  shall  not be
necessary or required in order to enforce any  obligations  under this  Guaranty
that Creditor has made demand for payment upon Debtor or any other person liable
on the Indebtedness for payment thereof or for performance of the Obligations or
has presented  same for payment by Debtor or any other person liable  thereon or
has made protest thereof or has given notice to Debtor or any other party liable
thereon of the maturity or nonpayment of the Indebtedness.  All amounts becoming
payable  by  Guarantor  to  Creditor  under  this  Guaranty  shall be payable at
Creditor's  address  stated  below,  or at such  other  address as  directed  by
Creditor in written notice to Guarantor. All payments made upon the Indebtedness
at any time shall be deemed to have been paid by Debtor unless express notice in
writing is given to Creditor at the time of payment by Guarantor  that  Creditor
has been paid by Guarantor. Upon demand by Creditor,  Guarantor shall perform or
cause to be performed any or all of the Obligations.

         9. Suit on Guaranty.  Suit may be brought by Creditor against Guarantor
alone,  or jointly and  severally  against  Guarantor  and any one or more other
guarantors of the Indebtedness and/or Obligations,  without impairing the rights
of  Creditor  against  Debtor or other  guarantors  of the  Indebtedness  and/or
Obligations.

         10.      Costs of Collection.  Guarantor agrees to pay all costs of 
collection, including reasonable attorney's fees and expenses, if this Guaranty 
is placed in the hands of an attorney for collection or is collected through any
 court.

         11. Waiver by Guarantor.  Guarantor  specifically waives any notice (i)
of acceptance of this Guaranty by Creditor,  (ii) of the creation,  advancement,
increase,   existence,   renewal,  extension,   modification,   refinancing,  or
rearrangement  of  the  Indebtedness,  or any  indulgence  with  respect  to the
Indebtedness,  or any part  thereof,  (iii) of  nonpayment  thereof  or  default
thereon or in the  performance  of the  Obligations,  and (iv) of any amendment,
modification, or restatement of all or any of the Obligations.  Guarantor waives
grace,  demand,  protest,  presentment,  and notice of intent to accelerate  the
maturity of the  Indebtedness,  notice of  acceleration  of the  maturity of the
Indebtedness,  demand, protest, or presentment with respect to the Indebtedness,
and Guarantor waives notice of the amount of the Indebtedness outstanding at any
time. Guarantor agrees that the

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GUARANTY AGREEMENT                                   Page 3

                                                                        Initials

<PAGE>





maturity of the Indebtedness, or any part thereof, may be accelerated,  renewed,
extended,  modified,  refinanced,  or rearranged or any other  indulgence may be
granted  with  respect  thereto by  Creditor  at its will or as may be agreed by
Debtor without notice to or further consent by Guarantor at any time.  Guarantor
agrees that  Guarantor  shall not be considered a "Debtor" as defined in Section
9.105 of the Texas Business and Commerce Code.

         12.  Guarantor's  Direct  Liability.  Creditor  shall not be  required,
before or as a condition of  enforcing  the  liability  of Guarantor  under this
Guaranty,  or requiring  payment of the  Indebtedness by Guarantor  hereunder or
performance  of the  Obligations,  or at any time  thereafter,  to do any of the
following: (a) proceed to obtain or assert a claim for personal judgment against
Debtor for the Indebtedness or make any effort at collection of the Indebtedness
from Debtor; (b) foreclose against or seek to realize upon the Collateral or any
security now or hereafter existing for the Indebtedness or Obligations; (c) file
suit or proceed to obtain or assert a claim for  personal  judgment  against any
other party (including any maker, guarantor,  endorser or surety) liable for the
Indebtedness or make any effort at collection of the Indebtedness  from any such
other party;  (d) exercise or assert any other right or remedy to which Creditor
is or may be entitled in connection with the  Indebtedness or Obligations or any
security or other  guaranty  therefor;  (e) assert or file any claim against the
assets  or  estate of Debtor or other  person  liable  for the  Indebtedness  or
Obligations,  or any part  thereof;  (f) take any action  against  Debtor or any
other person, to exhaust its remedies against endorsers, the Collateral or other
collateral  or security,  or to resort to any balance of any deposit  account or
credit on the books of Creditor in favor of Debtor or any other  person;  or (g)
pursue any other remedies  Creditor may have in connection with the Indebtedness
or Obligations.

         13.  Obligations  Not  Impaired.  Guarantor's  obligations  under  this
Guaranty  shall not be released,  diminished,  impaired,  reduced,  or adversely
affected,  and Guarantor  waives any common law,  equitable,  statutory or other
rights that Guarantor might otherwise have, as a result of any of the following:

                  (a) any full or partial  release of the  liability  of Debtor,
any other guarantor of the Indebtedness and/or Obligations,  or any other person
primarily or secondarily liable on the Indebtedness and/or  Obligations,  or any
part thereof (including any maker, endorser,  guarantor or surety), whether such
liability is direct or indirect,  joint, several, or joint and several, it being
recognized,  acknowledged  and agreed that  Guarantor may be required to pay the
Indebtedness and perform the Obligations in full without assistance of any other
party,  and  Guarantor  has not been induced to enter into this  Guaranty on the
basis of an  understanding  or agreement that other parties will at all times be
liable to pay the Indebtedness or perform the Obligations, or that Creditor will
look to other  parties  to pay the  Indebtedness  or  perform  the  Obligations;
provided,  however,  nothing in this  Guaranty  shall waive or  release,  either
expressly or impliedly, any rights of subrogation, reimbursement or contribution
that  Guarantor  may  have,  after  payment  in  full  of the  Indebtedness  and
performance of the Obligations,  against others liable under the Indebtedness or
for  performance of the  Obligations,  but  Guarantor's  rights of  subrogation,
reimbursement  and contribution  are secondary,  subordinate and inferior to the
rights and claims of Creditor;

                  (b) the voluntary or  involuntary  liquidation,  sale or other
disposition  of  all  or  substantially  all of the  assets  of  Debtor,  or any
receivership,   insolvency,   bankruptcy,   reorganization   or  other   similar
proceedings affecting Debtor or any of its assets;

                  (c) any  impairment,  modification,  release or  limitation of
liability  of  Debtor,   or  stay  of  foreclosure  or  other  lien  enforcement
proceedings  against  Debtor,  or  Debtor's  property,  or  Debtor's  estate  in
bankruptcy, or any modification, discharge or extension of the Indebtedness

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GUARANTY AGREEMENT                                   Page 4

                                                                        Initials

<PAGE>





resulting  from the operation of any present or future  provision of the Federal
Bankruptcy Code or other  bankruptcy laws, or from the decision of any court, it
being recognized,  acknowledged and agreed that Guarantor shall remain liable on
the Indebtedness and the Obligations, notwithstanding any act, omission or thing
which might,  but for the  provisions  hereof,  otherwise  operate as a legal or
equitable discharge of Guarantor;

                  (d)      any release of, subordination of, or substitution of
any security or other guaranty now or hereafter held by Creditor for payment of 
the Indebtedness and performance of the Obligations, or of any part thereof;

                  (e)      Creditor's failure to use diligence or care in 
preserving the liability of any person on the Indebtedness or the Obligations, 
or in bringing suit to enforce collection of the Indebtedness or performance of 
the Obligations;

                  (f)      the addition of another guarantor or guarantors of 
the Indebtedness or Obligations;

                  (g)      the substitution or withdrawal of collateral or 
release of security;

                  (h)      any renewal, extension, modification, alteration, 
refinancing  or rearrangement of or any other indulgence with respect to the 
Indebtedness or Obligations, or any part thereof;

                  (i) the exercise, failure to exercise, delay, omission or lack
of diligence or care by Creditor in exercising any right or power conferred upon
Creditor in this Guaranty,  the Note, or any  Transaction  Document  evidencing,
securing or relating to the Note or by law or in equity;

                  (j)  Debtor's  not  being  liable  for  the   Indebtedness  or
performance of the Obligations  because the act of creating the  Indebtedness or
Obligations is ultra vires, or the officers or persons creating the Indebtedness
or  Obligations  acted in  excess  of their  authority,  or for any  reason  the
Indebtedness or Obligations cannot be enforced against Debtor;

                  (k) any payment by Debtor to Creditor if such  payment is held
to constitute a preference under the Federal Bankruptcy Code or other bankruptcy
laws, or if for any other reason  Creditor is required to refund such payment to
Debtor or pay the amount thereof to any other party;

                  (l)      Guarantor's being or becoming liable for any 
indebtedness owing by Debtor to Creditor, by endorsement or otherwise, other 
than under this Guaranty; or

                  (m) the invalidity,  illegality or  unenforceability of all or
any part of the  Indebtedness,  for any  reason  whatsoever,  including  without
limitation the fact that the Note or other Transaction  Documents  pertaining to
the  Indebtedness or Obligations  have been forged or otherwise are irregular or
not genuine or authentic.

         14. Application of Payments.  If Creditor should collect or receive any
payments  from  any  person  other  than  Guarantor,  or  funds  which  are  not
specifically  required by law or  agreement  to be applied to the  Indebtedness,
then  Creditor may, in Creditor's  sole  discretion,  apply such payments to any
indebtedness  of Debtor  other  than the  Indebtedness.  Guarantor  agrees  that
Creditor  may apply  payments or other funds  received by Creditor  from Debtor,
from any other party obligated on the Indebtedness,  from the liquidation of any
collateral now or hereafter securing the Indebtedness, or from any other source,
including without limitation, insurance proceeds and

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GUARANTY AGREEMENT                                   Page 5

                                                                        Initials

<PAGE>





condemnation,  to the  Indebtedness  in any manner or order as Creditor may deem
appropriate in its sole and absolute discretion.

         15. Collection of Indebtedness. Guarantor expressly waives any right to
the  benefit  of or to require or control  application  of any  security  or the
proceeds  of any  security  now  existing or  hereafter  obtained by Creditor as
security for the  Indebtedness,  or any part  thereof,  and agrees that Creditor
shall have no duty to apply to the  Indebtedness  any monies,  payments or other
property at any time  received by or paid to or in the  possession  of Creditor,
except  as  Creditor  shall   determine  in  its  sole   discretion.   Guarantor
specifically agrees that Guarantor shall not have any recourse or action against
Creditor by reason of any action Creditor may take or omit to take in connection
with the  Indebtedness  or  Obligations,  the  collection of any sums or amounts
herein  mentioned,  or in connection with any security for or any other guaranty
of the Indebtedness and/or Obligations.

         16.  Subordination.  Guarantor  subordinates all indebtedness  owing to
Guarantor from Debtor to the Indebtedness.  Guarantor  further  subordinates any
liens or security  interest it may have in the  collateral or security of Debtor
(or any other  party) to the liens and  security  interests in favor of Creditor
securing the Indebtedness  and the  Obligations.  Guarantor agrees not to accept
any  payments  or  satisfaction  of any kind of any  indebtedness  of  Debtor to
Guarantor.  If Guarantor  should  receive any such payment or  satisfaction  for
indebtedness  of Debtor to Guarantor in violation of the above terms,  Guarantor
agrees to deliver the payment or satisfaction to Creditor,  and until delivered,
Guarantor agrees to hold the same in trust for Creditor.

         17. Notice of Litigation, Claims, and Financial Change. Guarantor shall
promptly  inform Creditor of any litigation  against  Guarantor or affecting any
security for the  Indebtedness or Obligations  which,  if determined  adversely,
might have a material  adverse effect upon the financial  condition of Guarantor
or upon  such  security  or might  cause a default  under  any of the  documents
evidencing, securing, or governing the Indebtedness or Obligations, any claim or
controversy  which might  become the  subject of  litigation,  and any  material
adverse change in the financial condition of Guarantor.

         18. Usury  Disclaimer.  No provision  herein or in any promissory note,
security  instrument,  or any other  Transaction  Document executed by Debtor or
Guarantor  evidencing the  Indebtedness  shall be construed to be or to create a
contract by  Guarantor to pay, as  consideration  for the use,  forbearance,  or
detention of money,  interest in excess of the rate or amount allowed by law. If
any excess of  interest in such  respect is  provided  for herein or in any such
promissory note, security  instrument,  or any other Transaction  Document,  the
provisions of this Section shall govern,  and neither Debtor nor Guarantor shall
be  obligated  to pay the amount of such  interest  to the extent  that it is in
excess of the amount  permitted by applicable  law. The intention of the parties
is to conform  strictly to the usury laws now in force, and all Promissory Notes
and  Transaction  Documents  executed  by Debtor  or  Guarantor  evidencing  the
Indebtedness  or  Obligations  shall be held  subject to reduction to the amount
allowed under said usury laws as now or hereafter construed by the courts having
jurisdiction.

         19.  Transferability.  This Guaranty is intended for and shall inure to
the benefit of Creditor  and each and every other  person who shall from time to
time be or become the owner or holder of any of the  Indebtedness,  and each and
every  reference  herein to  Creditor  shall also  include and refer to each and
every  successor  or assignee of Creditor at any time holding or owning any part
of or  interest  in any  part  of  the  Indebtedness.  This  Guaranty  shall  be
transferable  and  negotiable,  with the same  force and  effect and to the same
extent that the Indebtedness is transferable, it being understood and stipulated
that upon the assignment or transfer by Creditor of any of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 6

                                                                        Initials

<PAGE>





the legal  holder or owner of the  Indebtedness  (or part  thereof  or  interest
therein  transferred  or  assigned by  Creditor)  shall  also,  unless  provided
otherwise by Creditor in its transfer or  assignment,  have and may exercise all
of the rights  granted to Creditor under this Guaranty to the extent of the part
of or  interest in the  Indebtedness  assigned or  transferred  to said  person.
Guarantor expressly waives notice of transfer or assignment of the Indebtedness,
or any part  thereof,  or of the rights of Creditor  hereunder.  Notwithstanding
anything in this Section to the contrary,  all  Indebtedness  and Obligations to
Creditor  shall be paid and  performed  in full  first,  before any  assignee or
transferee shall receive any benefits of this Guaranty.

         20. Information Concerning Guarantor. Guarantor acknowledges and agrees
that Creditor may transfer the Indebtedness or partial  interests therein to one
or  more  transferees  or  participants.   Guarantor   authorizes   Creditor  to
disseminate  any  information  Creditor  has  pertaining  to  the  Indebtedness,
including,  without  limitation,  credit  information on Guarantor,  to any such
transferee or participant or prospective transferee or participant.

         21.      Binding on Others.  This Guaranty shall be binding upon 
Guarantor and Guarantor's heirs, legal representative, personal representatives,
 executors, administrators, successors and assigns.

         22. Modification or Consent. No modification,  consent or waiver of any
provision of this Guaranty shall be effective unless the  modification,  consent
or waiver is in writing and signed by an officer of Creditor,  and then shall be
effective only in the specific  instance and for the purpose for which given. No
notice to or demand on Guarantor in any case shall, of itself, entitle Guarantor
to any other or further notice or demand in similar or other  circumstances.  No
delay or  omission  by  Creditor  in  exercising  any power or right  under this
Guaranty  shall  impair  any such  right or  power or be  construed  as a waiver
thereof or any acquiescence therein, nor shall any single or partial exercise of
any such power preclude other or further  exercise  thereof,  or the exercise of
any other  right or power  under  this  Guaranty.  All rights  and  remedies  of
Creditor  under this  Guaranty are  cumulative  of each other and of every other
right or remedy which  Creditor may otherwise  have at law or in equity or under
any other  contract  or  document,  and the  exercise  of one or more  rights or
remedies shall not prejudice or impair the concurrent or subsequent  exercise of
other rights or remedies.

         23. Waiver of Certain Statutory Provisions. Guarantor hereby waives all
rights to which  Guarantor  may be or might  otherwise  become  entitled to with
respect to the  provisions of Sections 34.02 and 34.03 of the Texas Business and
Commerce Code, as amended,  and agrees that the rights of Guarantor  pursuant to
the  provisions  of Section  34.04 of the Texas  Business and Commerce  Code, as
amended,  shall be  subject  to,  secondary,  subordinate  and  inferior  in all
respects to the rights of Creditor pursuant to this Guaranty.

         24.  Notices.  Any notice or demand to Guarantor may be given and shall
conclusively  be deemed and  considered to have been given and received upon the
deposit  thereof,  in  writing,  in the United  States  mail,  duly  stamped and
addressed to Guarantor at Guarantor's  address stated below,  but actual notice,
however  given or  received,  shall  always  be  effective.  The last  preceding
sentence  shall not be  construed  in  anywise to affect or impair any waiver of
notice or demand herein  provided or to require giving of notice or demand to or
upon Guarantor in any situation or for any reason.  Creditor's  and  Guarantor's
respective addresses are:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 7

                                                                        Initials

<PAGE>




                           Creditor:   American Physicians Service Group, Inc.
                                       Attn: Mr. Duane K. Boyd
                                       1301 Capital of Texas Hwy., Suite C-300
                                       Austin, Texas, 78746

                           Guarantor:  Exsorbet Technical Services, Inc.    
                                       Attn:
                                       1401 South Waldron, Suite 201
                                       Fort Smith, Arkansas 72903

         25.      Governing Law and Place of Performance.  GUARANTOR AGREES THAT
THIS GUARANTY IS GOVERNED BY THE LAWS OF THE UNITED STATES AND THE STATE OF 
TEXAS.  This Guaranty is performable in Travis County, Texas, and Guarantor 
hereby waives the right to be sued elsewhere.

         26.      Headings.  Section headings of this Guaranty are inserted for 
convenience of reference only, and shall not alter, define, or be used in 
construing the text of such sections.

         27.  Pronouns.  As used herein and when  required by the context,  each
number  (singular and plural)  shall include all numbers,  and each gender shall
include all genders, and unless the context otherwise requires the word "person"
or  "party"  shall  include   "person,   corporation,   firm,   partnership   or
association".

         28.     Notice of Invalidity of Oral Agreements. THIS WRITTEN AGREEMENT
REPRESENTS THE FINAL  AGREEMENT  BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS,  OR  SUBSEQUENT  ORAL  AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         EXECUTED this 30th day of September, 1996.

                                       GUARANTOR:

                                       Exsorbet Technical Services, Inc.
                                       (an Arkansas corporation)



                                       By:
                                      Name:
                                     Title:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 8

<PAGE>


GUARANTY AGREEMENT


         THIS  GUARANTY  AGREEMENT  ("Guaranty")  is made as of the  30th day of
September, 1996, by Eco Acquisition, Inc., Inc., an Arkansas corporation, also
known as Eco-Systems, Inc.("Guarantor"), for the benefit of American Physicians
Service Group, Inc., a Texas corporation ("Creditor").

         FOR VALUE  RECEIVED,  the receipt and  sufficiency  of which  Guarantor
acknowledges,  Guarantor hereby jointly, severally, absolutely, irrevocably, and
unconditionally guarantees to Creditor (a) the prompt payment and performance of
(i) any  and all  sums  becoming  due and  payable  pursuant  to the  Stock  Put
Agreement dated September 30, 1996,  executed by Exsorbet  Industries,  Inc., an
Idaho corporation ("Debtor") and Creditor, including without limitation any sums
which may hereafter become due and owing on the Promissory Note (the "Note"), in
the original principal amount of $3,300,000.00,  which may be executed by Debtor
pursuant  to the Stock Put  Agreement,  and  payable  to the order of  Creditor,
including  without  limitation  any and all  interest  thereon  (other than such
interest as may be in excess of the maximum  lawful  amount),  late  charges (if
any), and costs of collection  (including  reasonable attorney's fees); (ii) all
other sums and indebtedness described in or secured by the Transaction Documents
(as defined  below);  (iii) any and all other sums  becoming  due and payable by
Debtor to  Creditor as a result of  advances  made by  Creditor  pursuant to the
terms of the Transaction  Documents,  including without limitation the repayment
of any future  advances made by Creditor to Debtor and the repayment of any sums
advanced for the protection of Creditor's  security  pursuant to the Transaction
Documents; (iv) any and all renewals, extensions, replacements,  rearrangements,
substitutions,  or  modifications  of  all  or  any  part  of  the  Indebtedness
(collectively,  the  "Indebtedness"),  and  (b) the  performance  of any and all
obligations,  warranties,  representations,  covenants  and  agreements  made by
Debtor in connection with the Transaction Documents, as the same may be amended,
modified, or restated from time to time (the "Obligations").

         2. Transaction Documents.  The term "Transaction Documents" shall mean:
the Stock Put Agreement dated September 30, 1996, executed by and between Debtor
and Creditor;  the Note (if and when executed pursuant to the terms of the Stock
Put  Agreement);  the  Warrant  executed  by  Debtor in favor of  Creditor;  the
Shareholder Rights Agreement executed by Debtor and Creditor; the Assignment and
Security Agreement dated September 30, 1996,  executed by and between Debtor and
Creditor,  and all other security agreements,  assignments,  and other documents
executed  by Debtor  for the  benefit of  Creditor  to secure  the  payment  and
performance of the Indebtedness and Obligations and creating a lien and security
interest  against  the  real  or  personal   property   described  therein  (the
"Collateral");  any other Guaranty  Agreements or surety agreements  executed in
favor of Creditor and guaranteeing the Note; and any other agreement,  document,
or instrument  executed by Debtor or any other  guarantor in connection with the
transaction evidenced by the Stock Put Agreement.

         3.       Nature of Guaranty.  Guarantor agrees that this Guaranty is an
absolute, complete, continuing, unconditional and irrevocable guaranty of 
payment and performance of the Indebtedness and the Obligations.

         4.       Renewals and Extensions.  This Guaranty applies to, and the 
Indebtedness shall additionally mean and refer to, any and all renewals, 
extensions, modifications, alterations, refinancings and rearrangements of all 
or any part of the Indebtedness.


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GUARANTY AGREEMENT                                   Page 1

                                                                       Initials

<PAGE>





         5.       Representations and Warranties.  Guarantor hereby represents 
and warrants the following to Creditor:

                  (a) Guarantor may  reasonably  expect to benefit,  directly or
indirectly,  from the making of this  Guaranty  and from and from each and every
renewal, extension, modification,  alteration, refinancing, and rearrangement of
all or any  part  of the  Indebtedness,  the  release  of  collateral  or  other
relinquishment  of legal  rights  made or  granted  or to be made or  granted by
Creditor to Debtor and the amendment or modification of the terms and conditions
of the Obligations,  and the Board of Directors of Guarantor has determined that
Guarantor may reasonably be expected to benefit,  directly or  indirectly,  from
the making of this Guaranty and has adopted resolutions stating the same; and

                  (b) Guarantor is familiar with, and has independently reviewed
the books and  records  regarding,  the  financial  condition  of Debtor  and is
familiar  with the value of any and all  collateral  intended to be security for
the payment of all or any part of the Indebtedness or for the performance of all
or any of the Obligations;  provided,  however, Guarantor is not relying on such
financial  condition or collateral as an inducement to enter into this Guaranty;
and

                  (c)  Guarantor  has adequate  means to obtain from Debtor on a
continuing basis  information  concerning the financial  condition of Debtor and
Guarantor  is not relying on Creditor to provide such  information  to Guarantor
either now or in the future; and

                  (d) Guarantor has the power and authority to execute, deliver,
and  perform  this  Guaranty  and any other  agreements  executed  by  Guarantor
contemporaneously herewith, and the execution, delivery, and performance of this
Guaranty  and any  other  agreements  executed  by  Guarantor  contemporaneously
herewith do not and will not violate (i) any  agreement or  instrument  to which
Guarantor  is  a  party,  (ii)  any  law,  rule,  regulation  or  order  of  any
governmental  authority to which Guarantor is subject,  or (iii) its articles or
certificate of incorporation or bylaw; and

                  (e)      neither Creditor nor any other party has made any 
representation, warranty or statement to Guarantor in order to induce Guarantor 
to execute this Guaranty; and

                  (f) the financial  statements and other financial  information
regarding Guarantor heretofore and hereafter delivered to Creditor are and shall
be true and correct in all material  respects and fairly  present the  financial
position of Guarantor as of the dates  thereof,  and no material  adverse change
has occurred in the financial  condition of Guarantor reflected in the financial
statements  and  other  financial  information  regarding  Guarantor  heretofore
delivered to Creditor since the date of the last statement thereof; and

                  (g) as of the date  hereof,  and after  giving  effect to this
Guaranty and the  obligations  evidenced  hereby,  (i)  Guarantor is and will be
solvent,  (ii) the fair saleable  value of  Guarantor's  assets exceeds and will
continue to exceed its liabilities (both fixed and contingent),  (iii) Guarantor
is and will  continue  to be able to pay its debts as they  mature,  and (iv) if
Guarantor  is not an  individual,  Guarantor  has  and  will  continue  to  have
sufficient  capital to carry on its business and all  businesses  in which it is
about to engage.

         6.       Inducement to Creditor.  Guarantor acknowledges that this 
Guaranty is given to induce Creditor to extend credit to Debtor which would not
be extended except in reliance upon this Guaranty.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 2

                                                                        Initials

<PAGE>







         7. Terms of Guaranty and Indebtedness  and  Obligations.  This Guaranty
contains the entire  agreement  between  Guarantor  and Creditor with respect to
Guarantor's  guarantee of the Indebtedness and Obligations;  provided,  however,
this Guaranty is in addition to and does not replace, cancel, modify, impair, or
affect any other  guaranty  executed by Guarantor  and now or hereafter  held by
Creditor   that   relates  to  Debtor  or  any  other   person  or  entity.   No
representations  or agreements have been made by Creditor to Guarantor except as
contained in this Guaranty.  Guarantor has read and understands the implications
of this Guaranty.  Guarantor  agrees to the terms,  provisions and conditions of
the Note,  the  Transaction  Documents  which may have been or may  hereafter be
executed by Debtor or other persons evidencing,  securing, or in connection with
the Indebtedness or Obligations or any part thereof, and agrees that Guarantor's
liability shall in no manner be affected,  impaired or released by reason of any
term,  provision,  or condition of the Note, the Transaction Documents or by the
failure,  refusal,  or omission of Creditor to enforce or observe any of same or
by any action  taken or omitted to be taken by Creditor  pursuant  thereto or in
connection therewith.

         8. Payment and Performance by Guarantor.  In each event that all or any
portion of the  Indebtedness  shall  become due and remain  unpaid  (however the
maturity may have occurred),  Guarantor will, upon demand, pay the amount due to
Creditor  (other than any  interest  as may be in excess of the  maximum  lawful
amount),  without notice having been given to Guarantor  previous to such demand
of the  acceptance  by Creditor of this Guaranty or of the creating or incurring
of  such  indebtedness.  Guarantor  specifically  agrees  that it  shall  not be
necessary or required in order to enforce any  obligations  under this  Guaranty
that Creditor has made demand for payment upon Debtor or any other person liable
on the Indebtedness for payment thereof or for performance of the Obligations or
has presented  same for payment by Debtor or any other person liable  thereon or
has made protest thereof or has given notice to Debtor or any other party liable
thereon of the maturity or nonpayment of the Indebtedness.  All amounts becoming
payable  by  Guarantor  to  Creditor  under  this  Guaranty  shall be payable at
Creditor's  address  stated  below,  or at such  other  address as  directed  by
Creditor in written notice to Guarantor. All payments made upon the Indebtedness
at any time shall be deemed to have been paid by Debtor unless express notice in
writing is given to Creditor at the time of payment by Guarantor  that  Creditor
has been paid by Guarantor. Upon demand by Creditor,  Guarantor shall perform or
cause to be performed any or all of the Obligations.

         9. Suit on Guaranty.  Suit may be brought by Creditor against Guarantor
alone,  or jointly and  severally  against  Guarantor  and any one or more other
guarantors of the Indebtedness and/or Obligations,  without impairing the rights
of  Creditor  against  Debtor or other  guarantors  of the  Indebtedness  and/or
Obligations.

         10.      Costs of Collection.  Guarantor agrees to pay all costs of 
collection, including reasonable attorney's fees and expenses, if this Guaranty 
is placed in the hands of an attorney for collection or is collected through any
 court.

         11. Waiver by Guarantor.  Guarantor  specifically waives any notice (i)
of acceptance of this Guaranty by Creditor,  (ii) of the creation,  advancement,
increase,   existence,   renewal,  extension,   modification,   refinancing,  or
rearrangement  of  the  Indebtedness,  or any  indulgence  with  respect  to the
Indebtedness,  or any part  thereof,  (iii) of  nonpayment  thereof  or  default
thereon or in the  performance  of the  Obligations,  and (iv) of any amendment,
modification, or restatement of all or any of the Obligations.  Guarantor waives
grace,  demand,  protest,  presentment,  and notice of intent to accelerate  the
maturity of the  Indebtedness,  notice of  acceleration  of the  maturity of the
Indebtedness,  demand, protest, or presentment with respect to the Indebtedness,
and Guarantor waives notice of the amount of the Indebtedness outstanding at any
time. Guarantor agrees that the

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GUARANTY AGREEMENT                                   Page 3

                                                                        Initials

<PAGE>





maturity of the Indebtedness, or any part thereof, may be accelerated,  renewed,
extended,  modified,  refinanced,  or rearranged or any other  indulgence may be
granted  with  respect  thereto by  Creditor  at its will or as may be agreed by
Debtor without notice to or further consent by Guarantor at any time.  Guarantor
agrees that  Guarantor  shall not be considered a "Debtor" as defined in Section
9.105 of the Texas Business and Commerce Code.

         12.  Guarantor's  Direct  Liability.  Creditor  shall not be  required,
before or as a condition of  enforcing  the  liability  of Guarantor  under this
Guaranty,  or requiring  payment of the  Indebtedness by Guarantor  hereunder or
performance  of the  Obligations,  or at any time  thereafter,  to do any of the
following: (a) proceed to obtain or assert a claim for personal judgment against
Debtor for the Indebtedness or make any effort at collection of the Indebtedness
from Debtor; (b) foreclose against or seek to realize upon the Collateral or any
security now or hereafter existing for the Indebtedness or Obligations; (c) file
suit or proceed to obtain or assert a claim for  personal  judgment  against any
other party (including any maker, guarantor,  endorser or surety) liable for the
Indebtedness or make any effort at collection of the Indebtedness  from any such
other party;  (d) exercise or assert any other right or remedy to which Creditor
is or may be entitled in connection with the  Indebtedness or Obligations or any
security or other  guaranty  therefor;  (e) assert or file any claim against the
assets  or  estate of Debtor or other  person  liable  for the  Indebtedness  or
Obligations,  or any part  thereof;  (f) take any action  against  Debtor or any
other person, to exhaust its remedies against endorsers, the Collateral or other
collateral  or security,  or to resort to any balance of any deposit  account or
credit on the books of Creditor in favor of Debtor or any other  person;  or (g)
pursue any other remedies  Creditor may have in connection with the Indebtedness
or Obligations.

         13.  Obligations  Not  Impaired.  Guarantor's  obligations  under  this
Guaranty  shall not be released,  diminished,  impaired,  reduced,  or adversely
affected,  and Guarantor  waives any common law,  equitable,  statutory or other
rights that Guarantor might otherwise have, as a result of any of the following:

                  (a) any full or partial  release of the  liability  of Debtor,
any other guarantor of the Indebtedness and/or Obligations,  or any other person
primarily or secondarily liable on the Indebtedness and/or  Obligations,  or any
part thereof (including any maker, endorser,  guarantor or surety), whether such
liability is direct or indirect,  joint, several, or joint and several, it being
recognized,  acknowledged  and agreed that  Guarantor may be required to pay the
Indebtedness and perform the Obligations in full without assistance of any other
party,  and  Guarantor  has not been induced to enter into this  Guaranty on the
basis of an  understanding  or agreement that other parties will at all times be
liable to pay the Indebtedness or perform the Obligations, or that Creditor will
look to other  parties  to pay the  Indebtedness  or  perform  the  Obligations;
provided,  however,  nothing in this  Guaranty  shall waive or  release,  either
expressly or impliedly, any rights of subrogation, reimbursement or contribution
that  Guarantor  may  have,  after  payment  in  full  of the  Indebtedness  and
performance of the Obligations,  against others liable under the Indebtedness or
for  performance of the  Obligations,  but  Guarantor's  rights of  subrogation,
reimbursement  and contribution  are secondary,  subordinate and inferior to the
rights and claims of Creditor;

                  (b) the voluntary or  involuntary  liquidation,  sale or other
disposition  of  all  or  substantially  all of the  assets  of  Debtor,  or any
receivership,   insolvency,   bankruptcy,   reorganization   or  other   similar
proceedings affecting Debtor or any of its assets;

                  (c) any  impairment,  modification,  release or  limitation of
liability  of  Debtor,   or  stay  of  foreclosure  or  other  lien  enforcement
proceedings  against  Debtor,  or  Debtor's  property,  or  Debtor's  estate  in
bankruptcy, or any modification, discharge or extension of the Indebtedness

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GUARANTY AGREEMENT                                   Page 4

                                                                        Initials

<PAGE>





resulting  from the operation of any present or future  provision of the Federal
Bankruptcy Code or other  bankruptcy laws, or from the decision of any court, it
being recognized,  acknowledged and agreed that Guarantor shall remain liable on
the Indebtedness and the Obligations, notwithstanding any act, omission or thing
which might,  but for the  provisions  hereof,  otherwise  operate as a legal or
equitable discharge of Guarantor;

                  (d)      any release of, subordination of, or substitution of
any security or other guaranty now or hereafter held by Creditor for payment of 
the Indebtedness and performance of the Obligations, or of any part thereof;

                  (e)      Creditor's failure to use diligence or care in 
preserving the liability of any person on the Indebtedness or the Obligations, 
or in bringing suit to enforce collection of the Indebtedness or performance of 
the Obligations;

                  (f)      the addition of another guarantor or guarantors of 
the Indebtedness or Obligations;

                  (g)      the substitution or withdrawal of collateral or 
release of security;

                  (h)      any renewal, extension, modification, alteration, 
refinancing  or rearrangement of or any other indulgence with respect to the 
Indebtedness or Obligations, or any part thereof;

                  (i) the exercise, failure to exercise, delay, omission or lack
of diligence or care by Creditor in exercising any right or power conferred upon
Creditor in this Guaranty,  the Note, or any  Transaction  Document  evidencing,
securing or relating to the Note or by law or in equity;

                  (j)  Debtor's  not  being  liable  for  the   Indebtedness  or
performance of the Obligations  because the act of creating the  Indebtedness or
Obligations is ultra vires, or the officers or persons creating the Indebtedness
or  Obligations  acted in  excess  of their  authority,  or for any  reason  the
Indebtedness or Obligations cannot be enforced against Debtor;

                  (k) any payment by Debtor to Creditor if such  payment is held
to constitute a preference under the Federal Bankruptcy Code or other bankruptcy
laws, or if for any other reason  Creditor is required to refund such payment to
Debtor or pay the amount thereof to any other party;

                  (l)      Guarantor's being or becoming liable for any 
indebtedness owing by Debtor to Creditor, by endorsement or otherwise, other 
than under this Guaranty; or

                  (m) the invalidity,  illegality or  unenforceability of all or
any part of the  Indebtedness,  for any  reason  whatsoever,  including  without
limitation the fact that the Note or other Transaction  Documents  pertaining to
the  Indebtedness or Obligations  have been forged or otherwise are irregular or
not genuine or authentic.

         14. Application of Payments.  If Creditor should collect or receive any
payments  from  any  person  other  than  Guarantor,  or  funds  which  are  not
specifically  required by law or  agreement  to be applied to the  Indebtedness,
then  Creditor may, in Creditor's  sole  discretion,  apply such payments to any
indebtedness  of Debtor  other  than the  Indebtedness.  Guarantor  agrees  that
Creditor  may apply  payments or other funds  received by Creditor  from Debtor,
from any other party obligated on the Indebtedness,  from the liquidation of any
collateral now or hereafter securing the Indebtedness, or from any other source,
including without limitation, insurance proceeds and

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GUARANTY AGREEMENT                                   Page 5

                                                                        Initials

<PAGE>





condemnation,  to the  Indebtedness  in any manner or order as Creditor may deem
appropriate in its sole and absolute discretion.

         15. Collection of Indebtedness. Guarantor expressly waives any right to
the  benefit  of or to require or control  application  of any  security  or the
proceeds  of any  security  now  existing or  hereafter  obtained by Creditor as
security for the  Indebtedness,  or any part  thereof,  and agrees that Creditor
shall have no duty to apply to the  Indebtedness  any monies,  payments or other
property at any time  received by or paid to or in the  possession  of Creditor,
except  as  Creditor  shall   determine  in  its  sole   discretion.   Guarantor
specifically agrees that Guarantor shall not have any recourse or action against
Creditor by reason of any action Creditor may take or omit to take in connection
with the  Indebtedness  or  Obligations,  the  collection of any sums or amounts
herein  mentioned,  or in connection with any security for or any other guaranty
of the Indebtedness and/or Obligations.

         16.  Subordination.  Guarantor  subordinates all indebtedness  owing to
Guarantor from Debtor to the Indebtedness.  Guarantor  further  subordinates any
liens or security  interest it may have in the  collateral or security of Debtor
(or any other  party) to the liens and  security  interests in favor of Creditor
securing the Indebtedness  and the  Obligations.  Guarantor agrees not to accept
any  payments  or  satisfaction  of any kind of any  indebtedness  of  Debtor to
Guarantor.  If Guarantor  should  receive any such payment or  satisfaction  for
indebtedness  of Debtor to Guarantor in violation of the above terms,  Guarantor
agrees to deliver the payment or satisfaction to Creditor,  and until delivered,
Guarantor agrees to hold the same in trust for Creditor.

         17. Notice of Litigation, Claims, and Financial Change. Guarantor shall
promptly  inform Creditor of any litigation  against  Guarantor or affecting any
security for the  Indebtedness or Obligations  which,  if determined  adversely,
might have a material  adverse effect upon the financial  condition of Guarantor
or upon  such  security  or might  cause a default  under  any of the  documents
evidencing, securing, or governing the Indebtedness or Obligations, any claim or
controversy  which might  become the  subject of  litigation,  and any  material
adverse change in the financial condition of Guarantor.

         18. Usury  Disclaimer.  No provision  herein or in any promissory note,
security  instrument,  or any other  Transaction  Document executed by Debtor or
Guarantor  evidencing the  Indebtedness  shall be construed to be or to create a
contract by  Guarantor to pay, as  consideration  for the use,  forbearance,  or
detention of money,  interest in excess of the rate or amount allowed by law. If
any excess of  interest in such  respect is  provided  for herein or in any such
promissory note, security  instrument,  or any other Transaction  Document,  the
provisions of this Section shall govern,  and neither Debtor nor Guarantor shall
be  obligated  to pay the amount of such  interest  to the extent  that it is in
excess of the amount  permitted by applicable  law. The intention of the parties
is to conform  strictly to the usury laws now in force, and all Promissory Notes
and  Transaction  Documents  executed  by Debtor  or  Guarantor  evidencing  the
Indebtedness  or  Obligations  shall be held  subject to reduction to the amount
allowed under said usury laws as now or hereafter construed by the courts having
jurisdiction.

         19.  Transferability.  This Guaranty is intended for and shall inure to
the benefit of Creditor  and each and every other  person who shall from time to
time be or become the owner or holder of any of the  Indebtedness,  and each and
every  reference  herein to  Creditor  shall also  include and refer to each and
every  successor  or assignee of Creditor at any time holding or owning any part
of or  interest  in any  part  of  the  Indebtedness.  This  Guaranty  shall  be
transferable  and  negotiable,  with the same  force and  effect and to the same
extent that the Indebtedness is transferable, it being understood and stipulated
that upon the assignment or transfer by Creditor of any of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 6

                                                                        Initials

<PAGE>





the legal  holder or owner of the  Indebtedness  (or part  thereof  or  interest
therein  transferred  or  assigned by  Creditor)  shall  also,  unless  provided
otherwise by Creditor in its transfer or  assignment,  have and may exercise all
of the rights  granted to Creditor under this Guaranty to the extent of the part
of or  interest in the  Indebtedness  assigned or  transferred  to said  person.
Guarantor expressly waives notice of transfer or assignment of the Indebtedness,
or any part  thereof,  or of the rights of Creditor  hereunder.  Notwithstanding
anything in this Section to the contrary,  all  Indebtedness  and Obligations to
Creditor  shall be paid and  performed  in full  first,  before any  assignee or
transferee shall receive any benefits of this Guaranty.

         20. Information Concerning Guarantor. Guarantor acknowledges and agrees
that Creditor may transfer the Indebtedness or partial  interests therein to one
or  more  transferees  or  participants.   Guarantor   authorizes   Creditor  to
disseminate  any  information  Creditor  has  pertaining  to  the  Indebtedness,
including,  without  limitation,  credit  information on Guarantor,  to any such
transferee or participant or prospective transferee or participant.

         21.      Binding on Others.  This Guaranty shall be binding upon 
Guarantor and Guarantor's heirs, legal representative, personal representatives,
 executors, administrators, successors and assigns.

         22. Modification or Consent. No modification,  consent or waiver of any
provision of this Guaranty shall be effective unless the  modification,  consent
or waiver is in writing and signed by an officer of Creditor,  and then shall be
effective only in the specific  instance and for the purpose for which given. No
notice to or demand on Guarantor in any case shall, of itself, entitle Guarantor
to any other or further notice or demand in similar or other  circumstances.  No
delay or  omission  by  Creditor  in  exercising  any power or right  under this
Guaranty  shall  impair  any such  right or  power or be  construed  as a waiver
thereof or any acquiescence therein, nor shall any single or partial exercise of
any such power preclude other or further  exercise  thereof,  or the exercise of
any other  right or power  under  this  Guaranty.  All rights  and  remedies  of
Creditor  under this  Guaranty are  cumulative  of each other and of every other
right or remedy which  Creditor may otherwise  have at law or in equity or under
any other  contract  or  document,  and the  exercise  of one or more  rights or
remedies shall not prejudice or impair the concurrent or subsequent  exercise of
other rights or remedies.

         23. Waiver of Certain Statutory Provisions. Guarantor hereby waives all
rights to which  Guarantor  may be or might  otherwise  become  entitled to with
respect to the  provisions of Sections 34.02 and 34.03 of the Texas Business and
Commerce Code, as amended,  and agrees that the rights of Guarantor  pursuant to
the  provisions  of Section  34.04 of the Texas  Business and Commerce  Code, as
amended,  shall be  subject  to,  secondary,  subordinate  and  inferior  in all
respects to the rights of Creditor pursuant to this Guaranty.

         24.  Notices.  Any notice or demand to Guarantor may be given and shall
conclusively  be deemed and  considered to have been given and received upon the
deposit  thereof,  in  writing,  in the United  States  mail,  duly  stamped and
addressed to Guarantor at Guarantor's  address stated below,  but actual notice,
however  given or  received,  shall  always  be  effective.  The last  preceding
sentence  shall not be  construed  in  anywise to affect or impair any waiver of
notice or demand herein  provided or to require giving of notice or demand to or
upon Guarantor in any situation or for any reason.  Creditor's  and  Guarantor's
respective addresses are:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 7

                                                                        Initials

<PAGE>




                           Creditor:   American Physicians Service Group, Inc.
                                       Attn: Mr. Duane K. Boyd
                                       1301 Capital of Texas Hwy., Suite C-300
                                       Austin, Texas, 78746

                           Guarantor:  Eco Acquisition, Inc.
                                       Attn:
                                       1401 South Waldron, Suite 201
                                       Fort Smith, Arkansas 72903

         25.      Governing Law and Place of Performance.  GUARANTOR AGREES THAT
THIS GUARANTY IS GOVERNED BY THE LAWS OF THE UNITED STATES AND THE STATE OF 
TEXAS.  This Guaranty is performable in Travis County, Texas, and Guarantor 
hereby waives the right to be sued elsewhere.

         26.      Headings.  Section headings of this Guaranty are inserted for 
convenience of reference only, and shall not alter, define, or be used in 
construing the text of such sections.

         27.  Pronouns.  As used herein and when  required by the context,  each
number  (singular and plural)  shall include all numbers,  and each gender shall
include all genders, and unless the context otherwise requires the word "person"
or  "party"  shall  include   "person,   corporation,   firm,   partnership   or
association".

         28.     Notice of Invalidity of Oral Agreements. THIS WRITTEN AGREEMENT
REPRESENTS THE FINAL  AGREEMENT  BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS,  OR  SUBSEQUENT  ORAL  AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         EXECUTED this 30th day of September, 1996.

                                       GUARANTOR:

                                       Eco Acquisition, Inc.
                                       (an Arkansas corporation)



                                       By:
                                      Name:
                                     Title:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 8

<PAGE>

GUARANTY AGREEMENT


         THIS  GUARANTY  AGREEMENT  ("Guaranty")  is made as of the  30th day of
September, 1996, by 7-7 Merger, Inc., Inc., an Arkansas corporation, 
("Guarantor"), for the benefit of American Physicians Service Group, Inc., a 
Texas corporation ("Creditor").

         FOR VALUE  RECEIVED,  the receipt and  sufficiency  of which  Guarantor
acknowledges,  Guarantor hereby jointly, severally, absolutely, irrevocably, and
unconditionally guarantees to Creditor (a) the prompt payment and performance of
(i) any  and all  sums  becoming  due and  payable  pursuant  to the  Stock  Put
Agreement dated September 30, 1996,  executed by Exsorbet  Industries,  Inc., an
Idaho corporation ("Debtor") and Creditor, including without limitation any sums
which may hereafter become due and owing on the Promissory Note (the "Note"), in
the original principal amount of $3,300,000.00,  which may be executed by Debtor
pursuant  to the Stock Put  Agreement,  and  payable  to the order of  Creditor,
including  without  limitation  any and all  interest  thereon  (other than such
interest as may be in excess of the maximum  lawful  amount),  late  charges (if
any), and costs of collection  (including  reasonable attorney's fees); (ii) all
other sums and indebtedness described in or secured by the Transaction Documents
(as defined  below);  (iii) any and all other sums  becoming  due and payable by
Debtor to  Creditor as a result of  advances  made by  Creditor  pursuant to the
terms of the Transaction  Documents,  including without limitation the repayment
of any future  advances made by Creditor to Debtor and the repayment of any sums
advanced for the protection of Creditor's  security  pursuant to the Transaction
Documents; (iv) any and all renewals, extensions, replacements,  rearrangements,
substitutions,  or  modifications  of  all  or  any  part  of  the  Indebtedness
(collectively,  the  "Indebtedness"),  and  (b) the  performance  of any and all
obligations,  warranties,  representations,  covenants  and  agreements  made by
Debtor in connection with the Transaction Documents, as the same may be amended,
modified, or restated from time to time (the "Obligations").

         2. Transaction Documents.  The term "Transaction Documents" shall mean:
the Stock Put Agreement dated September 30, 1996, executed by and between Debtor
and Creditor;  the Note (if and when executed pursuant to the terms of the Stock
Put  Agreement);  the  Warrant  executed  by  Debtor in favor of  Creditor;  the
Shareholder Rights Agreement executed by Debtor and Creditor; the Assignment and
Security Agreement dated September 30, 1996,  executed by and between Debtor and
Creditor,  and all other security agreements,  assignments,  and other documents
executed  by Debtor  for the  benefit of  Creditor  to secure  the  payment  and
performance of the Indebtedness and Obligations and creating a lien and security
interest  against  the  real  or  personal   property   described  therein  (the
"Collateral");  any other Guaranty  Agreements or surety agreements  executed in
favor of Creditor and guaranteeing the Note; and any other agreement,  document,
or instrument  executed by Debtor or any other  guarantor in connection with the
transaction evidenced by the Stock Put Agreement.

         3.       Nature of Guaranty.  Guarantor agrees that this Guaranty is an
absolute, complete, continuing, unconditional and irrevocable guaranty of 
payment and performance of the Indebtedness and the Obligations.

         4.       Renewals and Extensions.  This Guaranty applies to, and the 
Indebtedness shall additionally mean and refer to, any and all renewals, 
extensions, modifications, alterations, refinancings and rearrangements of all 
or any part of the Indebtedness.


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GUARANTY AGREEMENT                                   Page 1

                                                                       Initials

<PAGE>





         5.       Representations and Warranties.  Guarantor hereby represents 
and warrants the following to Creditor:

                  (a) Guarantor may  reasonably  expect to benefit,  directly or
indirectly,  from the making of this  Guaranty  and from and from each and every
renewal, extension, modification,  alteration, refinancing, and rearrangement of
all or any  part  of the  Indebtedness,  the  release  of  collateral  or  other
relinquishment  of legal  rights  made or  granted  or to be made or  granted by
Creditor to Debtor and the amendment or modification of the terms and conditions
of the Obligations,  and the Board of Directors of Guarantor has determined that
Guarantor may reasonably be expected to benefit,  directly or  indirectly,  from
the making of this Guaranty and has adopted resolutions stating the same; and

                  (b) Guarantor is familiar with, and has independently reviewed
the books and  records  regarding,  the  financial  condition  of Debtor  and is
familiar  with the value of any and all  collateral  intended to be security for
the payment of all or any part of the Indebtedness or for the performance of all
or any of the Obligations;  provided,  however, Guarantor is not relying on such
financial  condition or collateral as an inducement to enter into this Guaranty;
and

                  (c)  Guarantor  has adequate  means to obtain from Debtor on a
continuing basis  information  concerning the financial  condition of Debtor and
Guarantor  is not relying on Creditor to provide such  information  to Guarantor
either now or in the future; and

                  (d) Guarantor has the power and authority to execute, deliver,
and  perform  this  Guaranty  and any other  agreements  executed  by  Guarantor
contemporaneously herewith, and the execution, delivery, and performance of this
Guaranty  and any  other  agreements  executed  by  Guarantor  contemporaneously
herewith do not and will not violate (i) any  agreement or  instrument  to which
Guarantor  is  a  party,  (ii)  any  law,  rule,  regulation  or  order  of  any
governmental  authority to which Guarantor is subject,  or (iii) its articles or
certificate of incorporation or bylaw; and

                  (e)      neither Creditor nor any other party has made any 
representation, warranty or statement to Guarantor in order to induce Guarantor 
to execute this Guaranty; and

                  (f) the financial  statements and other financial  information
regarding Guarantor heretofore and hereafter delivered to Creditor are and shall
be true and correct in all material  respects and fairly  present the  financial
position of Guarantor as of the dates  thereof,  and no material  adverse change
has occurred in the financial  condition of Guarantor reflected in the financial
statements  and  other  financial  information  regarding  Guarantor  heretofore
delivered to Creditor since the date of the last statement thereof; and

                  (g) as of the date  hereof,  and after  giving  effect to this
Guaranty and the  obligations  evidenced  hereby,  (i)  Guarantor is and will be
solvent,  (ii) the fair saleable  value of  Guarantor's  assets exceeds and will
continue to exceed its liabilities (both fixed and contingent),  (iii) Guarantor
is and will  continue  to be able to pay its debts as they  mature,  and (iv) if
Guarantor  is not an  individual,  Guarantor  has  and  will  continue  to  have
sufficient  capital to carry on its business and all  businesses  in which it is
about to engage.

         6.       Inducement to Creditor.  Guarantor acknowledges that this 
Guaranty is given to induce Creditor to extend credit to Debtor which would not
be extended except in reliance upon this Guaranty.


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 2

                                                                        Initials

<PAGE>







         7. Terms of Guaranty and Indebtedness  and  Obligations.  This Guaranty
contains the entire  agreement  between  Guarantor  and Creditor with respect to
Guarantor's  guarantee of the Indebtedness and Obligations;  provided,  however,
this Guaranty is in addition to and does not replace, cancel, modify, impair, or
affect any other  guaranty  executed by Guarantor  and now or hereafter  held by
Creditor   that   relates  to  Debtor  or  any  other   person  or  entity.   No
representations  or agreements have been made by Creditor to Guarantor except as
contained in this Guaranty.  Guarantor has read and understands the implications
of this Guaranty.  Guarantor  agrees to the terms,  provisions and conditions of
the Note,  the  Transaction  Documents  which may have been or may  hereafter be
executed by Debtor or other persons evidencing,  securing, or in connection with
the Indebtedness or Obligations or any part thereof, and agrees that Guarantor's
liability shall in no manner be affected,  impaired or released by reason of any
term,  provision,  or condition of the Note, the Transaction Documents or by the
failure,  refusal,  or omission of Creditor to enforce or observe any of same or
by any action  taken or omitted to be taken by Creditor  pursuant  thereto or in
connection therewith.

         8. Payment and Performance by Guarantor.  In each event that all or any
portion of the  Indebtedness  shall  become due and remain  unpaid  (however the
maturity may have occurred),  Guarantor will, upon demand, pay the amount due to
Creditor  (other than any  interest  as may be in excess of the  maximum  lawful
amount),  without notice having been given to Guarantor  previous to such demand
of the  acceptance  by Creditor of this Guaranty or of the creating or incurring
of  such  indebtedness.  Guarantor  specifically  agrees  that it  shall  not be
necessary or required in order to enforce any  obligations  under this  Guaranty
that Creditor has made demand for payment upon Debtor or any other person liable
on the Indebtedness for payment thereof or for performance of the Obligations or
has presented  same for payment by Debtor or any other person liable  thereon or
has made protest thereof or has given notice to Debtor or any other party liable
thereon of the maturity or nonpayment of the Indebtedness.  All amounts becoming
payable  by  Guarantor  to  Creditor  under  this  Guaranty  shall be payable at
Creditor's  address  stated  below,  or at such  other  address as  directed  by
Creditor in written notice to Guarantor. All payments made upon the Indebtedness
at any time shall be deemed to have been paid by Debtor unless express notice in
writing is given to Creditor at the time of payment by Guarantor  that  Creditor
has been paid by Guarantor. Upon demand by Creditor,  Guarantor shall perform or
cause to be performed any or all of the Obligations.

         9. Suit on Guaranty.  Suit may be brought by Creditor against Guarantor
alone,  or jointly and  severally  against  Guarantor  and any one or more other
guarantors of the Indebtedness and/or Obligations,  without impairing the rights
of  Creditor  against  Debtor or other  guarantors  of the  Indebtedness  and/or
Obligations.

         10.      Costs of Collection.  Guarantor agrees to pay all costs of 
collection, including reasonable attorney's fees and expenses, if this Guaranty 
is placed in the hands of an attorney for collection or is collected through any
 court.

         11. Waiver by Guarantor.  Guarantor  specifically waives any notice (i)
of acceptance of this Guaranty by Creditor,  (ii) of the creation,  advancement,
increase,   existence,   renewal,  extension,   modification,   refinancing,  or
rearrangement  of  the  Indebtedness,  or any  indulgence  with  respect  to the
Indebtedness,  or any part  thereof,  (iii) of  nonpayment  thereof  or  default
thereon or in the  performance  of the  Obligations,  and (iv) of any amendment,
modification, or restatement of all or any of the Obligations.  Guarantor waives
grace,  demand,  protest,  presentment,  and notice of intent to accelerate  the
maturity of the  Indebtedness,  notice of  acceleration  of the  maturity of the
Indebtedness,  demand, protest, or presentment with respect to the Indebtedness,
and Guarantor waives notice of the amount of the Indebtedness outstanding at any
time. Guarantor agrees that the

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 3

                                                                        Initials

<PAGE>





maturity of the Indebtedness, or any part thereof, may be accelerated,  renewed,
extended,  modified,  refinanced,  or rearranged or any other  indulgence may be
granted  with  respect  thereto by  Creditor  at its will or as may be agreed by
Debtor without notice to or further consent by Guarantor at any time.  Guarantor
agrees that  Guarantor  shall not be considered a "Debtor" as defined in Section
9.105 of the Texas Business and Commerce Code.

         12.  Guarantor's  Direct  Liability.  Creditor  shall not be  required,
before or as a condition of  enforcing  the  liability  of Guarantor  under this
Guaranty,  or requiring  payment of the  Indebtedness by Guarantor  hereunder or
performance  of the  Obligations,  or at any time  thereafter,  to do any of the
following: (a) proceed to obtain or assert a claim for personal judgment against
Debtor for the Indebtedness or make any effort at collection of the Indebtedness
from Debtor; (b) foreclose against or seek to realize upon the Collateral or any
security now or hereafter existing for the Indebtedness or Obligations; (c) file
suit or proceed to obtain or assert a claim for  personal  judgment  against any
other party (including any maker, guarantor,  endorser or surety) liable for the
Indebtedness or make any effort at collection of the Indebtedness  from any such
other party;  (d) exercise or assert any other right or remedy to which Creditor
is or may be entitled in connection with the  Indebtedness or Obligations or any
security or other  guaranty  therefor;  (e) assert or file any claim against the
assets  or  estate of Debtor or other  person  liable  for the  Indebtedness  or
Obligations,  or any part  thereof;  (f) take any action  against  Debtor or any
other person, to exhaust its remedies against endorsers, the Collateral or other
collateral  or security,  or to resort to any balance of any deposit  account or
credit on the books of Creditor in favor of Debtor or any other  person;  or (g)
pursue any other remedies  Creditor may have in connection with the Indebtedness
or Obligations.

         13.  Obligations  Not  Impaired.  Guarantor's  obligations  under  this
Guaranty  shall not be released,  diminished,  impaired,  reduced,  or adversely
affected,  and Guarantor  waives any common law,  equitable,  statutory or other
rights that Guarantor might otherwise have, as a result of any of the following:

                  (a) any full or partial  release of the  liability  of Debtor,
any other guarantor of the Indebtedness and/or Obligations,  or any other person
primarily or secondarily liable on the Indebtedness and/or  Obligations,  or any
part thereof (including any maker, endorser,  guarantor or surety), whether such
liability is direct or indirect,  joint, several, or joint and several, it being
recognized,  acknowledged  and agreed that  Guarantor may be required to pay the
Indebtedness and perform the Obligations in full without assistance of any other
party,  and  Guarantor  has not been induced to enter into this  Guaranty on the
basis of an  understanding  or agreement that other parties will at all times be
liable to pay the Indebtedness or perform the Obligations, or that Creditor will
look to other  parties  to pay the  Indebtedness  or  perform  the  Obligations;
provided,  however,  nothing in this  Guaranty  shall waive or  release,  either
expressly or impliedly, any rights of subrogation, reimbursement or contribution
that  Guarantor  may  have,  after  payment  in  full  of the  Indebtedness  and
performance of the Obligations,  against others liable under the Indebtedness or
for  performance of the  Obligations,  but  Guarantor's  rights of  subrogation,
reimbursement  and contribution  are secondary,  subordinate and inferior to the
rights and claims of Creditor;

                  (b) the voluntary or  involuntary  liquidation,  sale or other
disposition  of  all  or  substantially  all of the  assets  of  Debtor,  or any
receivership,   insolvency,   bankruptcy,   reorganization   or  other   similar
proceedings affecting Debtor or any of its assets;

                  (c) any  impairment,  modification,  release or  limitation of
liability  of  Debtor,   or  stay  of  foreclosure  or  other  lien  enforcement
proceedings  against  Debtor,  or  Debtor's  property,  or  Debtor's  estate  in
bankruptcy, or any modification, discharge or extension of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 4

                                                                        Initials

<PAGE>





resulting  from the operation of any present or future  provision of the Federal
Bankruptcy Code or other  bankruptcy laws, or from the decision of any court, it
being recognized,  acknowledged and agreed that Guarantor shall remain liable on
the Indebtedness and the Obligations, notwithstanding any act, omission or thing
which might,  but for the  provisions  hereof,  otherwise  operate as a legal or
equitable discharge of Guarantor;

                  (d)      any release of, subordination of, or substitution of
any security or other guaranty now or hereafter held by Creditor for payment of 
the Indebtedness and performance of the Obligations, or of any part thereof;

                  (e)      Creditor's failure to use diligence or care in 
preserving the liability of any person on the Indebtedness or the Obligations, 
or in bringing suit to enforce collection of the Indebtedness or performance of 
the Obligations;

                  (f)      the addition of another guarantor or guarantors of 
the Indebtedness or Obligations;

                  (g)      the substitution or withdrawal of collateral or 
release of security;

                  (h)      any renewal, extension, modification, alteration, 
refinancing  or rearrangement of or any other indulgence with respect to the 
Indebtedness or Obligations, or any part thereof;

                  (i) the exercise, failure to exercise, delay, omission or lack
of diligence or care by Creditor in exercising any right or power conferred upon
Creditor in this Guaranty,  the Note, or any  Transaction  Document  evidencing,
securing or relating to the Note or by law or in equity;

                  (j)  Debtor's  not  being  liable  for  the   Indebtedness  or
performance of the Obligations  because the act of creating the  Indebtedness or
Obligations is ultra vires, or the officers or persons creating the Indebtedness
or  Obligations  acted in  excess  of their  authority,  or for any  reason  the
Indebtedness or Obligations cannot be enforced against Debtor;

                  (k) any payment by Debtor to Creditor if such  payment is held
to constitute a preference under the Federal Bankruptcy Code or other bankruptcy
laws, or if for any other reason  Creditor is required to refund such payment to
Debtor or pay the amount thereof to any other party;

                  (l)      Guarantor's being or becoming liable for any 
indebtedness owing by Debtor to Creditor, by endorsement or otherwise, other 
than under this Guaranty; or

                  (m) the invalidity,  illegality or  unenforceability of all or
any part of the  Indebtedness,  for any  reason  whatsoever,  including  without
limitation the fact that the Note or other Transaction  Documents  pertaining to
the  Indebtedness or Obligations  have been forged or otherwise are irregular or
not genuine or authentic.

         14. Application of Payments.  If Creditor should collect or receive any
payments  from  any  person  other  than  Guarantor,  or  funds  which  are  not
specifically  required by law or  agreement  to be applied to the  Indebtedness,
then  Creditor may, in Creditor's  sole  discretion,  apply such payments to any
indebtedness  of Debtor  other  than the  Indebtedness.  Guarantor  agrees  that
Creditor  may apply  payments or other funds  received by Creditor  from Debtor,
from any other party obligated on the Indebtedness,  from the liquidation of any
collateral now or hereafter securing the Indebtedness, or from any other source,
including without limitation, insurance proceeds and

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 5

                                                                        Initials

<PAGE>





condemnation,  to the  Indebtedness  in any manner or order as Creditor may deem
appropriate in its sole and absolute discretion.

         15. Collection of Indebtedness. Guarantor expressly waives any right to
the  benefit  of or to require or control  application  of any  security  or the
proceeds  of any  security  now  existing or  hereafter  obtained by Creditor as
security for the  Indebtedness,  or any part  thereof,  and agrees that Creditor
shall have no duty to apply to the  Indebtedness  any monies,  payments or other
property at any time  received by or paid to or in the  possession  of Creditor,
except  as  Creditor  shall   determine  in  its  sole   discretion.   Guarantor
specifically agrees that Guarantor shall not have any recourse or action against
Creditor by reason of any action Creditor may take or omit to take in connection
with the  Indebtedness  or  Obligations,  the  collection of any sums or amounts
herein  mentioned,  or in connection with any security for or any other guaranty
of the Indebtedness and/or Obligations.

         16.  Subordination.  Guarantor  subordinates all indebtedness  owing to
Guarantor from Debtor to the Indebtedness.  Guarantor  further  subordinates any
liens or security  interest it may have in the  collateral or security of Debtor
(or any other  party) to the liens and  security  interests in favor of Creditor
securing the Indebtedness  and the  Obligations.  Guarantor agrees not to accept
any  payments  or  satisfaction  of any kind of any  indebtedness  of  Debtor to
Guarantor.  If Guarantor  should  receive any such payment or  satisfaction  for
indebtedness  of Debtor to Guarantor in violation of the above terms,  Guarantor
agrees to deliver the payment or satisfaction to Creditor,  and until delivered,
Guarantor agrees to hold the same in trust for Creditor.

         17. Notice of Litigation, Claims, and Financial Change. Guarantor shall
promptly  inform Creditor of any litigation  against  Guarantor or affecting any
security for the  Indebtedness or Obligations  which,  if determined  adversely,
might have a material  adverse effect upon the financial  condition of Guarantor
or upon  such  security  or might  cause a default  under  any of the  documents
evidencing, securing, or governing the Indebtedness or Obligations, any claim or
controversy  which might  become the  subject of  litigation,  and any  material
adverse change in the financial condition of Guarantor.

         18. Usury  Disclaimer.  No provision  herein or in any promissory note,
security  instrument,  or any other  Transaction  Document executed by Debtor or
Guarantor  evidencing the  Indebtedness  shall be construed to be or to create a
contract by  Guarantor to pay, as  consideration  for the use,  forbearance,  or
detention of money,  interest in excess of the rate or amount allowed by law. If
any excess of  interest in such  respect is  provided  for herein or in any such
promissory note, security  instrument,  or any other Transaction  Document,  the
provisions of this Section shall govern,  and neither Debtor nor Guarantor shall
be  obligated  to pay the amount of such  interest  to the extent  that it is in
excess of the amount  permitted by applicable  law. The intention of the parties
is to conform  strictly to the usury laws now in force, and all Promissory Notes
and  Transaction  Documents  executed  by Debtor  or  Guarantor  evidencing  the
Indebtedness  or  Obligations  shall be held  subject to reduction to the amount
allowed under said usury laws as now or hereafter construed by the courts having
jurisdiction.

         19.  Transferability.  This Guaranty is intended for and shall inure to
the benefit of Creditor  and each and every other  person who shall from time to
time be or become the owner or holder of any of the  Indebtedness,  and each and
every  reference  herein to  Creditor  shall also  include and refer to each and
every  successor  or assignee of Creditor at any time holding or owning any part
of or  interest  in any  part  of  the  Indebtedness.  This  Guaranty  shall  be
transferable  and  negotiable,  with the same  force and  effect and to the same
extent that the Indebtedness is transferable, it being understood and stipulated
that upon the assignment or transfer by Creditor of any of the Indebtedness

APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 6

                                                                        Initials

<PAGE>





the legal  holder or owner of the  Indebtedness  (or part  thereof  or  interest
therein  transferred  or  assigned by  Creditor)  shall  also,  unless  provided
otherwise by Creditor in its transfer or  assignment,  have and may exercise all
of the rights  granted to Creditor under this Guaranty to the extent of the part
of or  interest in the  Indebtedness  assigned or  transferred  to said  person.
Guarantor expressly waives notice of transfer or assignment of the Indebtedness,
or any part  thereof,  or of the rights of Creditor  hereunder.  Notwithstanding
anything in this Section to the contrary,  all  Indebtedness  and Obligations to
Creditor  shall be paid and  performed  in full  first,  before any  assignee or
transferee shall receive any benefits of this Guaranty.

         20. Information Concerning Guarantor. Guarantor acknowledges and agrees
that Creditor may transfer the Indebtedness or partial  interests therein to one
or  more  transferees  or  participants.   Guarantor   authorizes   Creditor  to
disseminate  any  information  Creditor  has  pertaining  to  the  Indebtedness,
including,  without  limitation,  credit  information on Guarantor,  to any such
transferee or participant or prospective transferee or participant.

         21.      Binding on Others.  This Guaranty shall be binding upon 
Guarantor and Guarantor's heirs, legal representative, personal representatives,
 executors, administrators, successors and assigns.

         22. Modification or Consent. No modification,  consent or waiver of any
provision of this Guaranty shall be effective unless the  modification,  consent
or waiver is in writing and signed by an officer of Creditor,  and then shall be
effective only in the specific  instance and for the purpose for which given. No
notice to or demand on Guarantor in any case shall, of itself, entitle Guarantor
to any other or further notice or demand in similar or other  circumstances.  No
delay or  omission  by  Creditor  in  exercising  any power or right  under this
Guaranty  shall  impair  any such  right or  power or be  construed  as a waiver
thereof or any acquiescence therein, nor shall any single or partial exercise of
any such power preclude other or further  exercise  thereof,  or the exercise of
any other  right or power  under  this  Guaranty.  All rights  and  remedies  of
Creditor  under this  Guaranty are  cumulative  of each other and of every other
right or remedy which  Creditor may otherwise  have at law or in equity or under
any other  contract  or  document,  and the  exercise  of one or more  rights or
remedies shall not prejudice or impair the concurrent or subsequent  exercise of
other rights or remedies.

         23. Waiver of Certain Statutory Provisions. Guarantor hereby waives all
rights to which  Guarantor  may be or might  otherwise  become  entitled to with
respect to the  provisions of Sections 34.02 and 34.03 of the Texas Business and
Commerce Code, as amended,  and agrees that the rights of Guarantor  pursuant to
the  provisions  of Section  34.04 of the Texas  Business and Commerce  Code, as
amended,  shall be  subject  to,  secondary,  subordinate  and  inferior  in all
respects to the rights of Creditor pursuant to this Guaranty.

         24.  Notices.  Any notice or demand to Guarantor may be given and shall
conclusively  be deemed and  considered to have been given and received upon the
deposit  thereof,  in  writing,  in the United  States  mail,  duly  stamped and
addressed to Guarantor at Guarantor's  address stated below,  but actual notice,
however  given or  received,  shall  always  be  effective.  The last  preceding
sentence  shall not be  construed  in  anywise to affect or impair any waiver of
notice or demand herein  provided or to require giving of notice or demand to or
upon Guarantor in any situation or for any reason.  Creditor's  and  Guarantor's
respective addresses are:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 7

                                                                        Initials

<PAGE>




                           Creditor:   American Physicians Service Group, Inc.
                                       Attn: Mr. Duane K. Boyd
                                       1301 Capital of Texas Hwy., Suite C-300
                                       Austin, Texas, 78746

                           Guarantor:  7-7 Merger, Inc.
                                       Attn:
                                       1401 South Waldron, Suite 201
                                       Fort Smith, Arkansas 72903

         25.      Governing Law and Place of Performance.  GUARANTOR AGREES THAT
THIS GUARANTY IS GOVERNED BY THE LAWS OF THE UNITED STATES AND THE STATE OF 
TEXAS.  This Guaranty is performable in Travis County, Texas, and Guarantor 
hereby waives the right to be sued elsewhere.

         26.      Headings.  Section headings of this Guaranty are inserted for 
convenience of reference only, and shall not alter, define, or be used in 
construing the text of such sections.

         27.  Pronouns.  As used herein and when  required by the context,  each
number  (singular and plural)  shall include all numbers,  and each gender shall
include all genders, and unless the context otherwise requires the word "person"
or  "party"  shall  include   "person,   corporation,   firm,   partnership   or
association".

         28.     Notice of Invalidity of Oral Agreements. THIS WRITTEN AGREEMENT
REPRESENTS THE FINAL  AGREEMENT  BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED
BY EVIDENCE OF PRIOR,  CONTEMPORANEOUS,  OR  SUBSEQUENT  ORAL  AGREEMENTS OF THE
PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         EXECUTED this 30th day of September, 1996.

                                       GUARANTOR:

                                       7-7 Merger, Inc.
                                       (an Arkansas corporation)



                                       By:
                                      Name:
                                     Title:


APSGI/Exsorbet
GUARANTY AGREEMENT                                   Page 8



                                                                 Exhibit 10.25


                                 PROMISSORY NOTE
Austin, Texas, 1996


         FOR VALUE RECEIVED,  the  undersigned,  EXSORBET  INDUSTRIES,  INC., an
Idaho corporation, ("Maker") promises to pay to the order of AMERICAN PHYSICIANS
SERVICE GROUP,  INC., a Texas  corporation  ("Payee"),  at 1301 Capital of Texas
Hwy.,  Suite C-300,  Austin,  Texas,  78746 ("Payee's  Address"),  the principal
amount  of  Three   Million   Three   Hundred   Thousand   and  00/100   Dollars
($3,300,000.00)  (the  "Principal  Amount"),  or  such  less  amount  as  may be
outstanding  from time to time,  together with interest on the unpaid balance of
such amount as provided herein, in lawful money of the United States of America,
in accordance with all the terms, conditions, and covenants of this Note and the
Transaction Documents identified below.

         1.       Payment. The principal balance of this Note and all accrued 
and unpaid interest is payable on or before October 1, 1997 (the "Maturity 
Date").

         2.  Transaction  Documents  and  Collateral.  This Note is executed and
delivered  by Maker  pursuant  to the  terms of the Stock  Put  Agreement  dated
September  30, 1996,  executed by and between  among Maker and Payee (the "Stock
Put Agreement"),  and this Note evidences Maker's indebtedness owing by Maker to
Payee  under the terms of such Stock Put  Agreement.  This Note is  secured  by,
inter alia, the following: the Assignment and Security Agreement dated September
30,  1996,  executed  by  Maker  as  debtor  and  Payee as  Secured  Party  (the
"Assignment"). This Note, the Stock Put Agreement, the Assignment, and all other
documents evidencing,  securing, governing,  guaranteeing,  and/or pertaining to
this Note,  including but not limited to those documents  described  above,  are
sometimes collectively referred to as the "Transaction Documents". Payee and any
subsequent owner or holder of this Note is entitled to the benefits and security
provided in the Transaction Documents.

         3.       Interest Provisions.

                  (a) Rate. The principal balance of this Note from time to time
remaining unpaid prior to maturity shall bear interest at a fixed rate per annum
equal to fifteen  and 75/100  percent  (15.75%)  (the  "Note  Rate"),  but never
greater than the "Maximum Lawful Rate", as that term is defined in this Note.

                  (b) Maximum Lawful  Interest.  The term "Maximum  Lawful Rate"
means the maximum rate of interest,  and the term "Maximum  Lawful Amount" means
the maximum amount of interest that are permissible  under  applicable  state or
federal  law  for the  type  of  loan  evidenced  by  this  Note  and the  other
Transaction Documents. If Article 1.04 of the Texas Credit Code is applicable to
this Note, and applicable state or federal law does not permit a higher interest
rate, the "Indicated  (Weekly) Ceiling" (as defined as Article 1.04(a)(1) of the
Texas Credit Code) shall be the Interest  Rate Ceiling  applicable  to this Note
and shall be the basis for  determining  the Maximum  Lawful Rate in effect from
time to time  during the term of this Note,  unless a  different  Interest  Rate
Ceiling is designated  on the first page of this Note.  If  applicable  state or
federal law allows a higher  interest rate or federal law preempts the state law
limiting the rate of interest,  then the  foregoing  Interest Rate Ceiling shall
not be  applicable  to this Note.  If the Maximum  Lawful Rate is  increased  by
statute or other  governmental  action subsequent to the date of this Note, then
the new Maximum  Lawful Rate shall be applicable to this Note from the effective
date thereof, unless otherwise prohibited by applicable law.


                                   EXHIBIT "A"
PROMISSORY NOTE              Page 1 of 5               Exsorbet Industries, Inc.

<PAGE>




                  (c)  Spreading  of  Interest.  Because of the  possibility  of
irregular  periodic  balances of  principal  and  premature  payment,  the total
interest that will accrue under this Note cannot be determined in advance. Payee
does not intend to contract for, charge, or receive more than the Maximum Lawful
Rate or Maximum Lawful Amount  permitted by applicable state or federal law, and
to  prevent  such an  occurrence  Payee  and Maker  agree  that all  amounts  of
interest,  whenever  contracted for, charged, or received by Payee, with respect
to the loan of money  evidenced  by this  Note,  shall be spread,  prorated,  or
allocated over the full period of time this Note is unpaid, including the period
of any renewal or extension of this Note.  If demand for payment of this Note is
made by Payee  prior to the full  stated  term,  the total  amount  of  interest
contracted for, charged, or received to the time of such demand shall be spread,
prorated, or allocated along with any interest thereafter accruing over the full
period of time that this Note  thereafter  remains  unpaid  for the  purpose  of
determining if such interest exceeds the Maximum Lawful Amount.

                  (d) Excess Interest.  At maturity  (whether by acceleration or
otherwise)  or on earlier  final  payment of this Note,  Payee shall compute the
total amount of interest that has been contracted for,  charged,  or received by
Payee or payable by Maker under this Note and compare such amount to the Maximum
Lawful  Amount  that could have been  contracted  for,  charged,  or received by
Payee. If such  computation  reflects that the total amount of interest that has
been contracted for,  charged,  or received by Payee or payable by Maker exceeds
the Maximum Lawful  Amount,  then Payee shall apply such excess to the reduction
of the principal  balance and not to the payment of interest;  or if such excess
interest exceeds the unpaid principal balance,  such excess shall be refunded to
Maker.  This  provision  concerning  the crediting or refund or excess  interest
shall control and take  precedence over all other  agreements  between Maker and
Payee so that under no  circumstances  shall the total interest  contracted for,
charged, or received by Payee exceed the Maximum Lawful Amount.

                  (e) Interest  After  Default.  At Payee's  option,  the unpaid
principal balance shall bear interest after maturity (whether by acceleration or
otherwise) at the "Default  Interest Rate." The Default  Interest Rate shall be,
at Payee's  option,  (i) the Maximum Lawful Rate, if such Maximum Lawful Rate is
established  by applicable  law; or (ii) the Note Rate plus five (5)  percentage
points,  if no Maximum Lawful Rate is  established  by applicable  law; or (iii)
eighteen  percent (18%) per annum; or (iv) such lesser rate of interest as Payee
in its sole  discretion  may choose to charge;  but never more than the  Maximum
Lawful Rate or at a rate that would  cause the total  interest  contracted  for,
charged, or received by Payee to exceed the Maximum Lawful Amount.

                  (f) Daily Computation of Interest.  To the extent permitted by
applicable  law,  Payee at its  option may  either  (i)  calculate  the per diem
interest  rate or amount based on the actual  number of days in the year (365 or
366, as the case may be), and charge that per diem  interest rate or amount each
day, or (ii)  calculate the per diem interest rate or amount as if each year has
only 360 days, and charge that per diem interest rate or amount each day for the
actual  number of days of the year (365 or 366 as the case may be). If this Note
calls for monthly payments, Payee at its option may determine the payment amount
based on the  assumption  that each year has only 360 days and each month has 30
days.  In no event shall Payee compute the interest in a manner that would cause
Payee to contract for, charge, or receive interest that would exceed the Maximum
Lawful Rate or the Maximum Lawful Amount.



                                   EXHIBIT "A"
PROMISSORY NOTE                Page 2 of 5             Exsorbet Industries, Inc.

<PAGE>





         4.       Default Provisions.

                  (a) Events of Default  and  Acceleration  of  Maturity.  Maker
agrees  that an event of  default  shall  exist  under  this  Note and the other
Transaction  Documents if: (i) Maker defaults in the payment of any  installment
of principal,  interest, or any other sum required to be paid under the terms of
this Note or any of the Transaction Documents; or (ii) there is a default in the
performance of any covenant,  condition,  or agreement contained in this Note or
any of the Transaction  Documents,  or an event of default or default  otherwise
occurs or exists  under any of the  other  Transaction  Documents;  or (iii) the
bankruptcy or insolvency  of, the assignment for the benefit of creditors by, or
the  appointment  of a receiver for any of the property of, or the  liquidation,
termination,  dissolution or death or legal  incapacity of, any party liable for
the  payment of this  Note,  whether as maker,  endorser,  guarantor,  surety or
otherwise.  Maker agrees that if an event of default occurs,  Payee may, without
notice  or  demand,  except  as  otherwise  required  by  statute  or  otherwise
specifically  provided in this Note or any of the other  Transaction  Documents,
accelerate  the  maturity of this Note and declare the entire  unpaid  principal
balance and all accrued  interest at once due and payable,  foreclose  all liens
and security  interests  securing  this Note,  and exercise all other rights and
remedies  Payee may have  under this Note and the other  Transaction  Documents,
including any one or more of the foregoing remedies.

                  (b) WAIVER BY MAKER.  MAKER AND ALL OTHER  PARTIES  LIABLE FOR
THIS NOTE WAIVE  DEMAND,  NOTICE OF INTENT TO DEMAND,  PRESENTMENT  FOR PAYMENT,
NOTICE OF NONPAYMENT,  PROTEST,  NOTICE OF PROTEST,  GRACE,  NOTICE OF DISHONOR,
NOTICE OF INTENT TO ACCELERATE MATURITY, NOTICE OF ACCELERATION OF MATURITY, AND
DILIGENCE IN COLLECTION.  EACH MAKER,  SURETY,  ENDORSER,  AND GUARANTOR OF THIS
NOTE  WAIVES AND AGREES TO ONE OR MORE  EXTENSIONS  FOR ANY PERIOD OR PERIODS OF
TIME, AND ANY PARTIAL PAYMENTS,  BEFORE OR AFTER MATURITY,  WITHOUT PREJUDICE TO
THE HOLDER OF THIS NOTE.  EACH MAKER,  SURETY,  ENDORSER,  AND GUARANTOR  WAIVES
NOTICE OF ANY AND ALL RENEWALS, EXTENSIONS, REARRANGEMENTS, AND MODIFICATIONS OF
THIS NOTE.

                  (c)  Non-Waiver  by Payee.  Any  previous  extension  of time,
forbearance,  failure to pursue some remedy,  acceptance  of late  payments,  or
acceptance  of partial  payment  by Payee,  before or after  maturity,  does not
constitute  a waiver by Payee of its  subsequent  right to strictly  enforce the
collection of this Note according to its terms.

                  (d) Remedies.  Payee shall not be required to first file suit,
exhaust all  remedies,  or enforce its rights  against any  security in order to
enforce payment of this Note. The rights,  remedies,  and recourses of Payee, as
provided in this Note and in any of the other  Transaction  Documents,  shall be
cumulative  and  concurrent  and  may be  pursued  separately,  successively  or
together as often as occasion  therefore  shall arise, at the sole discretion of
Payee.

                  (e)      Joint and Several Liability.  Each Maker who signs 
this Note, and all of the other parties liable for the payment of this Note, 
such as guarantors, endorsers, and sureties, are jointly and severally liable 
for the payment of this Note.

                  (f)  Attorney's  Fees.  If Payee  requires  the services of an
attorney  to enforce the  payment of this Note or the  performance  of the other
Transaction  Documents,  or if  this  Note is  collected  through  any  lawsuit,
probate,  bankruptcy, or other judicial proceeding, Maker agrees to pay Payee an
amount equal to its reasonable  attorney's fees and other collection costs. This
provision shall be limited by any applicable statutory  restrictions relating to
the collection of attorney's fees.


                                   EXHIBIT "A"
PROMISSORY NOTE                   Page 3 of 5          Exsorbet Industries, Inc.

<PAGE>





         5.       Miscellaneous Provisions.

                  (a)      Subsequent Holder.  All references to Payee in this 
Note shall also refer to any subsequent owner or holder of this Note by 
transfer, assignment, endorsement, or otherwise.

                  (b)  Transfer.  Maker  acknowledges  and agrees that Payee may
transfer this Note or partial  interests in the Note to one or more  transferees
or  participants.  Maker  authorizes Payee to disseminate any information it has
pertaining  to the  indebtedness  evidenced  by this  Note,  including,  without
limitation,  credit  information on Maker and any guarantor of this Note, to any
such transferee or participant or prospective transferee or participant.

                  (c) Other Parties Liable. All promises,  waivers,  agreements,
and  conditions  applicable to Maker shall likewise be applicable to and binding
upon any other parties  primarily or secondarily  liable for the payment of this
Note, including all guarantors, endorsers, and sureties.

                  (d) Payment in U.S.  Dollars.  All payments and prepayments of
principal  of or  interest  on this Note  shall be made in  lawful  money of the
United States of America in immediately  available funds, at the address of Bank
indicated  above, or such other place as the holder of this Note shall designate
in writing to Maker. The books and records of Bank shall be prima facie evidence
of all outstanding principal of and accrued and unpaid interest on this Note.

                  (e) Payment on Business  Days.  The term  "Business Day" shall
mean any day other than a  Saturday,  Sunday or any other day on which  national
banking associations are authorized to be closed. If any payment of principal of
or interest on this Note shall become due on a day which is not a Business  Day,
such  payment  shall be made on the next  succeeding  Business  Day and any such
extension of time shall be included in  computing  interest in  connection  with
such payment.

                  (d) Successors and Assigns.  The provisions of this Note shall
be  binding  upon  and  for  the  benefit  of the  successors,  assigns,  heirs,
executors, and administrators of Payee and Maker.

                  (e) No Duty or Special  Relationship.  Maker acknowledges that
Payee  has no duty of good  faith  to  Maker,  and  Maker  acknowledges  that no
fiduciary,  trust, or other special relationship exists between Payee and Maker.
If Payee and Maker are now engaged in or in the future engage in other  business
transactions,  such other business transactions are independent of this Note and
the  indebtedness  evidenced  hereby and of the promises and  covenants  made by
Maker in this Note, and vice versa.

                  (f)  Modifications.  Any  modifications  agreed  to  by  Payee
relating  to the  release  of  liability  of any of  the  parties  primarily  or
secondarily  liable for the payment of this Note,  or  relating to the  release,
substitution,  or  subordination  of all or part of the  security for this Note,
shall in no way  constitute  a release of  liability  with  respect to the other
parties or security not covered by such modification.

                  (g)      Entire Agreement.  Maker warrants and represents that
the Transaction Documents constitute the entire agreement between Maker and 
Payee with respect to the indebtedness evidenced by this Note and agrees that no
modification, amendment, or additional


                                   EXHIBIT "A"
PROMISSORY NOTE               Page 4 of 5              Exsorbet Industries, Inc.

<PAGE>




agreement with respect to such indebtedness will be valid and enforceable unless
made in writing signed by both Maker and Payee.

                  (h) Maker's  Address for  Notice.  All notices  required to be
sent by Payee to Maker shall be sent by U.S. Mail,  postage prepaid,  to Maker's
Address  stated next to Maker's  signature  below,  until  Payee  shall  receive
written notification from Maker of a new address for notice.

                  (i) Payee's Address for Payment.  All sums payable by Maker to
Payee shall be paid at Payee's Address stated on the first page of this Note, or
at such other address as Payee shall designate from time to time.

                  (j) Chapter 15 Not  Applicable.  It is understood that Chapter
15 of the Texas Credit Code relating to certain  revolving  credit loan accounts
and tri-party accounts is not applicable to this Note.

                  (k)      APPLICABLE LAW.  THIS NOTE SHALL BE CONSTRUED IN 
ACCORDANCE WITH THE APPLICABLE LAWS OF THE STATE OF TEXAS AND THE LAWS OF THE 
UNITED STATES OF AMERICA APPLICABLE TO TRANSACTIONS IN TEXAS.

         EXECUTED this           day of                                , 1996.

                                     MAKER:

                                                     Exsorbet Industries, Inc.
                                                     (an Idaho corporation)



                                       By:
                                      Name:
                                     Title:





                                   EXHIBIT "A"
PROMISSORY NOTE                 Page 5 of 5            Exsorbet Industries, Inc.


                                                                    EXHIBIT 11.1


                     AMERICAN PHYSICIANS SERVICE GROUP, INC.
                       COMPUTATION OF NET INCOME PER SHARE
               FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1996 AND 1995



(In thousands, except earnings per share)    
                                                       Primary    Fully Diluted
                                                       Earnings       Earnings
                                                      Per Share      Per Share
                                                      ----------     -----------
1996          
- ----
Net Income applicable to common stock .................  $ 1,924         1,924

Average number of shares outstanding ..................    4,025         4,025
Average stock option shares ...........................      244           296
                                                          ------        ------

    Shares for earnings calculation ...................    4,269         4,321

Net income per share ..................................   $ 0.45          0.45
                                                          ======        ======



1995                                                                            
- ----
Net Income applicable to common stock .................  $ 2,024         2,024

Average number of shares outstanding ..................    3,480         3,480
Average stock option shares ...........................      363           683
                                                           -----        ------

    Shares for earnings calculation ...................    3,843         4,163

Net income per share ..................................   $ 0.53          0.49
                                                          ======        ======




NOTE:
Primary and fully diluted income per share were computed by dividing
net income by the average number of shares outstanding plus the common
stock equivalents which, would arise from the exercise of dilutive stock 
options.


                                  EXHIBIT 21.1

             SUBSIDIARIES OF AMERICAN PHYSICIANS SERVICE GROUP, INC.
                              AS OF MARCH 25, 1997


Name of Subsidiary                                       State of Incorporation
- -------------------                                      ----------------------
APS Communications Corporation                                    Texas

APS Facilities Management, Inc.                                   Texas

APS Financial Corporation                                         Colorado

APS Insurance Services, Inc.                                      Delaware

APS Realty, Inc.                                                  Texas

PLE Management, Inc.                                              Texas

APS Insurance Agency, Inc.                                        Texas



                                                                    Exhibit 23.1



                          INDEPENDENT AUDITORS' CONSENT
- --------------------------------------------------------------------------------

We consent to incorporation  by reference in the  registration  statements (Nos.
33-66308,  333-07425,  333-07427)  on Form S-8 of  American  Physicians  Service
Group, Inc. of our report dated February 28, 1997,  relating to the consolidated
balance sheets of American Physicians Service Group, Inc. and subsidiaries as of
December 31, 1996 and 1995, and the related consolidated statements of earnings,
shareholders'  equity,  and cash  flows for each of the years in the  three-year
period ended December 31, 1996 which report appears in the Annual Report on Form
10-KSB of American  Physicians  Service Group,  Inc. for the year ended December
31, 1996.




Austin, Texas
March 28, 1997                     BY:  /s/  KPMG Peat Marwick, LLP
                                   --------------------------------



<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
     THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE 
     DECEMBER 31, 1996 FORM 10-KSB AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
     TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER>                         1,000
       
<S>                                  <C>
<PERIOD-TYPE>                        12-MOS
<FISCAL-YEAR-END>                    DEC-31-1996
<PERIOD-START>                       JAN-01-1996
<PERIOD-END>                         DEC-31-1996
<CASH>                               5,770
<SECURITIES>                         728
<RECEIVABLES>                        4,249
<ALLOWANCES>                         290
<INVENTORY>                          0
<CURRENT-ASSETS>                     11,625
<PP&E>                               4,256
<DEPRECIATION>                       2,475
<TOTAL-ASSETS>                       24,468
<CURRENT-LIABILITIES>                3,320
<BONDS>                              0
                0
                          0
<COMMON>                             405
<OTHER-SE>                           19,977
<TOTAL-LIABILITY-AND-EQUITY>         24,468
<SALES>                              0
<TOTAL-REVENUES>                     11,646
<CGS>                                365
<TOTAL-COSTS>                        9,908
<OTHER-EXPENSES>                     198
<LOSS-PROVISION>                     0
<INTEREST-EXPENSE>                   54
<INCOME-PRETAX>                      2,969
<INCOME-TAX>                         1,045
<INCOME-CONTINUING>                  1,924
<DISCONTINUED>                       0
<EXTRAORDINARY>                      0
<CHANGES>                            0
<NET-INCOME>                         1,924
<EPS-PRIMARY>                        0.45
<EPS-DILUTED>                        0.45
        


</TABLE>


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