Document:

STOCK OPTION AGREEMENT

                  AGREEMENT made as of the 5th day of May, 1998, by and between
ENVIRO-RECOVERY, INC., a Texas corporation ("Company"), and Steve Schock
("Employee").

                  WHEREAS, the Company and Employee have entered into an
employment Agreement of even date herewith pursuant to which employee will be
employed by the Company ("Employment Agreement");

                  WHEREAS, on May 5, 1998 ("Grant Date"), the Board of Directors
of the Company ("Board") authorized the grant to the Employee of an option
("Option") to purchase an aggregate of 5,000,000 shares of the authorized but
unissued Common Stock of the Company ("Common Stock"), conditioned upon the
Employee's acceptance thereof upon the terms and conditions set forth in this
Agreement; and

                  WHEREAS, the Employee desires to acquire the Option on the
terms and conditions set forth in this Agreement;

                  IT IS AGREED:

                  1.       Grant of Stock Option.  The Company hereby grants the
Employee the Option to purchase all or any part of an aggregate of 5,000,000
shares of Common Stock ("Option Shares") on the terms and conditions set forth
herein.

                  2.       Non-Incentive Stock Option.  The Option represented
hereby is not intended to be an Option which qualifies as an "Incentive Stock
Option" under Section 422 of the Internal Revenue Code of 1986, as amended.

<PAGE>

                  3.       Exercise Price.  The exercise price of the Option is
$.10 per share, subject to adjustment as hereinafter provided.

                  4.       Exercisability.  This Option is exercisable
commencing May 5, 1998 and ending on May 5, 2003, at the close of business
("Exercise Period").

                  5.       Effect of Termination of Employment.  The termination
of the employment of Employee will have no effect on the exercisability of this
option.

                  6. Withholding Tax. Not later than the date as of which an
amount first becomes includible in the gross income of the Employee for Federal
income tax purposes with respect to the Option, the Employee shall notify the
Company of the amount and, to the extent required, pay to the Company, or make
arrangements satisfactory to the Company regarding the payment of, any Federal,
state and local taxes of any kind required by law to be withheld or paid with
respect to such amount. The obligations of the Company under the Plan and
pursuant to this Agreement shall be conditional upon such payment or
arrangements with the Company and the Company shall, to the extent permitted by
law, have the right to deduct any such taxes from any payment of any kind
otherwise due to the Employee from the Company.

                  7. Adjustments. In the event of any recapitalization, dividend
(other than cash dividend), stock split, reverse stock split, or other change in
capital structure of the Company affecting the number of issued shares of Common
Stock, the Company shall proportionally adjust the number and kind of Option
Shares and the exercise price of the Option in order to prevent the dilution or
enlargement of the Employee's proportionate interest in the Company and
Employee's rights hereunder immediately prior to the recapitalization, dividend,
stock split, reverse stock split or other change in the capital structure,
provided that the number of Option Shares shall always be a whole number.

                                        2

<PAGE>

                  8.       Method of Exercise.

                           8.1.     Notice to the Company.  The Option shall be
exercised in whole or in part by written notice in substantially the form
attached hereto as Exhibit A directed to the Company at its principal place of
business accompanied by full payment as hereinafter provided of the exercise
price for the number of Option Shares specified in the notice.

                           8.2.     Delivery of Option Shares.  The Company
shall deliver a certificate for the Option Shares to the Employee as soon as
practicable after payment therefor.

                           8.3.     Payment of Purchase Price.

                                    8.3.1.  Payment.  The Employee shall make
payments by wire transfer, certified or bank check or personal check, in each
case payable to the order of the Company; the Company shall not be required to
deliver certificates for Option Shares until the Company has confirmed the
receipt of good and available funds in payment of the purchase price thereof.

                                    8.3.2.  Payment of Withholding Tax.  Any
required withholding tax may be paid in cash in accordance with Sections 8.3.1.

                  9. Nonassignability. The Option shall not be assignable or
transferable except by will or by the laws of descent and distribution in the
event of the death of the Employee. No transfer of the Option by the Employee by
will or by the laws of descent and distribution shall be effective to bind the
Company unless the Company shall have been furnished with written notice thereof
and a copy of the will and such other evidence as the Company may deem necessary
to establish the validity of the transfer and the acceptance by the transferee
or transferees of the terms and conditions of the Option.

                                        3

<PAGE>

                  10.      Company Representations.  The Company hereby
represents and warrants to the Employee that:

                           (a)      the Company, by appropriate and all required
         action, is duly authorized to enter into this Agreement and consummate
         all of the transactions contemplated hereunder; and

                           (b) the Option Shares, when issued and delivered by
         the Company to the Employee in accordance with the terms and conditions
         hereof, will be duly and validly issued and fully paid and
         non-assessable.

                  11.      Employee Representations.  The Employee hereby
represents and warrants to the Company that:

                           (a)      he is acquiring the Option and shall acquire
         the Option Shares for his own account and not with a view towards the
         distribution thereof;

                           (b) he understands that he must bear the economic
         risk of the investment in the Option Shares, which cannot be sold by
         his unless they are registered under the Securities Act of 1933 ("1933
         Act") or an exemption therefrom is available thereunder and that the
         Company is under no obligation to register the Option Shares for sale
         under the 1933 Act;

                           (c) in his position with the Company, he has had both
         the opportunity to ask questions and receive answers from the officers
         and directors of the Company and all persons acting on its behalf
         concerning the terms and conditions of the offer made hereunder and to
         obtain any additional information to the extent the Company possesses
         or may possess such information or can acquire it without unreasonable
         effort or expense necessary to verify the accuracy of the information
         obtained pursuant to clause (ii) above;

                                        4

<PAGE>

                           (d) he is aware that the Company shall place stop
         transfer orders with its transfer agent against the transfer of the
         Option Shares in the absence of registration under the 1933 Act or an
         exemption therefrom as provided herein; and

                           (e) The certificates evidencing the Option Shares may
         bear the following legends:

                           "The shares represented by this certificate have been
                           acquired for investment and have not been registered
                           under the Securities Act of 1933. The shares may not
                           be sold or transferred in the absence of such
                           registration or an exemption therefrom under said
                           Act."

                           "The shares represented by this certificate have been
                           acquired pursuant to a Stock Option Agreement, dated
                           as of May 5, 1998, a copy of which is on file with
                           the Company, and may not be trans ferred, pledged or
                           disposed of except in accordance with the terms and
                           conditions thereof."

                  12. Restriction on Transfer of Stock Option Agreement and
Option Shares. Anything in this Agreement to the contrary notwithstanding and in
addition to the provisions of Section 11 of this Agreement, the Employee hereby
agrees that he or she shall not sell, transfer by any means or otherwise dispose
of the Option Shares acquired by him or her without registration under the 1933
Act, or in the event that they are not so registered, unless (i) an exemption
from the 1933 Act registration requirements is available thereunder, and (ii)
the Employee has furnished the Company with notice of such proposed transfer and
the Company's legal counsel, in its reasonable opinion, shall deem such proposed
transfer to be so exempt.

                  13.      Miscellaneous.

                           13.1.    Notices.  All notices, requests, deliveries,
payments, demands and other communications which are required or permitted to be
given under this Agreement shall be in writing and shall be either delivered

                                        5

<PAGE>

personally or sent by registered or certified mail, or by private courier,
return receipt requested, postage prepaid to the parties at their respective
addresses set forth herein, or to such other address as either shall have
specified by notice in writing to the other. Notice shall be deemed duly given
hereunder when delivered or mailed as provided herein.

                           13.2.    Stockholder Rights.  The Employee shall not
have any of the rights of a stockholder with respect to the Option Shares until
such shares have been issued after the due exercise of the Option. Nothing
contained in this Agreement shall be deemed to confer upon Employee any right to
continued employment with the Company or any subsidiary thereof, nor shall it
interfere in any way with the right of the Company to terminate Employee in
accordance with the provisions regarding such termination set forth in
Employee's written agreement with the Company, or if there exists no such
agreement, to terminate Employee at will.

                           13.3.    Waiver.  The waiver by any party hereto of a
breach of any provision of this Agreement shall not operate or be construed as a
waiver of any other or subsequent breach.

                           13.4.    Entire Agreement.  This Agreement
constitutes the entire agreement between the parties with respect to the subject
matter hereof. This Agreement may not be amended except by writing executed by
the party to be charged.

                           13.5.    Binding Effect; Successors.  This Agreement
shall inure to the benefit of and be binding upon the parties hereto and, to the
extent not prohibited herein, their respective heirs, successors, assigns and
representatives. Nothing in this Agreement, expressed or implied, is intended to
confer on any person other than the parties hereto and as provided above, their
respective heirs, successors, assigns and representatives any rights, remedies,
obligations or liabilities.

                           13.6.    Governing Law.  This Agreement shall be
governed by and construed in accordance with the laws of the State of Wisconsin
(without regard to choice of law provisions).

                                       6
<PAGE>

                           13.7.    Headings.  The headings contained herein are
for the sole purpose of convenience of reference, and shall not in any way limit
or affect the meaning or interpretation of any of the terms or provisions of
this Agreement.

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

ENVIRO-RECOVERY, INC.                     Address:
                                          2200 EAST LAKESHORE DRIVE
                                          ASHLAND, WISCONSIN 54806
     /s/ Scott Mitchen
By:_____________________
         Scott Mitchen

EMPLOYEE:                                 Address:
                                          713 ST. ALBANS DRIVE
                                          BOCA RATON, FLORIDA 33486
   /s/ Steven Schock
_______________________
Steven Schock

                                                         7

<PAGE>

                                                                   EXHIBIT A
                      FORM OF NOTICE OF EXERCISE OF OPTION

__________________________
            DATE

Enviro-Recovery, Inc.
2200 East Lakeshore Drive
Ashland, Wisconsin 54806

Attention: Secretary or Treasurer

                           Re:      Purchase of Option Shares

Gentlemen:

                  In accordance with my Stock Option Agreement dated as of May
5, 1998 ("Agreement") with Enviro-Recovery, Inc. ("Company"), I hereby
irrevocably elect to exercise the right to purchase _________ shares of the
Company's common stock ("Common Stock"), which are being purchased for
investment and not for resale.

                  As payment for my shares, enclosed is (check and complete
applicable box[es]):

                  a [personal check] [certified check] [bank check]
            |__|  payable to the order of "Enviro Recovery, Inc." in the sum
                  of $_________; and/or

                  confirmation of wire transfer in the amount of
            |_|   $_____________.

                  I hereby represent, warrant to, and agree with, the Company
that:

                           (i)      I have acquired the Option and shall
         acquire the Option Shares for my own account and not with a view
         towards the distribution thereof;

                           (ii) I understand that I must bear the economic risk
         of the investment in the Option Shares, which cannot be sold by me
         unless they are registered under the Securities Act of 1933 ("1933
         Act") or an exemption therefrom is available thereunder and that the
         Company is under no obligation to register the Option Shares for sale
         under the 1933 Act;

                           (iii) in my position with the Company, I have had
         both the opportunity to ask questions and receive answers from the
         officers and directors of the Company and all persons act ing on its
         behalf concerning the terms and conditions of the offer made hereunder
         and to obtain any additional information to the extent the Company

                                        2

<PAGE>

         possesses or may possess such information or can acquire it without
         unreasonable effort or expense necessary to verify the accuracy of the
         information obtained pursuant to clause (ii) above;

                           (iv) I am aware that the Company shall place stop
         transfer orders with its transfer agent against the transfer of the
         Option Shares in the absence of registration under the 1933 Act or an
         exemption therefrom as provided herein; and

                           (v) the certificates evidencing the Option Shares may
         bear the following legends:

                           "The shares represented by this certificate have been
                           acquired for investment and have not been registered
                           under the Securities Act of 1933. The shares may not
                           be sold or transferred in the absence of such
                           registration or an exemption therefrom under said
                           Act."

                           "The shares represented by this certificate have been
                           acquired pursuant to a Stock Option Agreement, dated
                           as of May 5, 1998, a copy of which is on file with
                           the Company, and may not be transferred, pledged or
                           disposed of except in accordance with the terms and
                           conditions thereof."

                  Kindly forward to me my certificate at your earliest
convenience.

Very truly yours,

_____________________________                _________________________________
(Signature)                                  (Address)

_____________________________                _________________________________
(Print Name)                                 (Address)

                                             _________________________________
                                             (Social Security Number)INCENTIVE STOCK OPTION AGREEMENT

                  AGREEMENT  made as of the  8th  day of  March,  1999,  by and
between  ENVIRO-RECOVERY,  INC.,  a Texas corporation ("Company"), and David
Neitzke ("Employee").

                  WHEREAS, on 5 June, 1998 ("Grant Date"), pursuant to the terms
and conditions of the Company's 1998 Performance Equity Plan ("Plan"), the Stock
Option Committee("Committee") of the Board of Directors of the Company ("Board")
and/or Board authorized the grant to the Employee of an option ("Option") to
purchase an aggregate of 2,500,000 shares of the authorized but unissued Common
Stock of the Company, $.0001 par value ("Common Stock"),conditioned upon the
Employee's acceptance thereof upon the terms and conditions set forth in this
Agreement and subject to the terms of the Plan; and

                  WHEREAS,  the  Employee  desires to acquire  the  Option on
the terms and  conditions  set forth in this Agreement;

                  IT IS AGREED:

                  Grant of Stock  Option.  The Company  hereby  grants the
Employee the Option to purchase all or any part of an aggregate of 2,500,000
shares of Common Stock ("Option Shares") on the terms and conditions set forth
herein and subject to the provisions of the Plan.

1. Incentive Stock Option. The Option represented hereby is intended to be an
Option which qualifies as an "Incentive Stock Option" under Section 422 of the
Internal Revenue Code of 1986, as amended. The grant of an Incentive Stock
Option hereunder is subject to approval of the Plan by the stockholders of the
Company, and if the approval is not obtained prior to 5 June 1999, the Incentive
Stock Option will be deemed a non-incentive option.

2. Exercise Price. For options that vest immediately, the exercise price of the
Option is $0.10 per share, the effective market value of the stock on the grant
date, June 5, 1998. For options that vest in the future, the exercise price is
equal to the closing price of the stock on the last trading day before the
options vest.

<PAGE>

3. Exercisability. This Option is exercisable, subject to the terms and
conditions of the Plan, as follows: (i) the right to purchase 2,000,000 of the
Option Shares shall be exercisable immediately, (ii) the right to purchase an
additional 100,000 of the Option Shares shall be exercisable on and after June
5, 1999, (iii) the right to purchase an additional 100,000 of the Option Shares
shall be exercisable on and after June 5, 2000, (iv) the right to purchase the
remaining 100,000 of the Options Shares shall be exercisable on and after June
5, 2001, (v) the right to purchase the remaining 100,000 of the Options Shares
shall be exercisable on or after June 5, 2002, (vi) the right to purchase the
remaining 100,000 of the Options Shares shall be exercisable on or after June 5,
2003. After a portion of the Option becomes exercisable, it shall remain
exercisable, except as otherwise provided herein, until the close of business on
June 4, 2005. ("Exercise Period").

4.   Effect of Termination of Employment.

4.1. Termination Due to Death. If Employee's employment by the Company
terminates by reason of death, the portion of the Option, if any, was
exercisable as of the date of death may thereafter be exercised by the legal
representative of the estate or by the legatee of the Employee under the will of
the Employee, for a period of one year from the date of such death or until the
expiration of the Exercise Period, whichever period is shorter. The portion of
the Option, if any, that was not exercisable as of the date of death shall
immediately terminate upon death.

4.2. Termination Due to Disability. If Employee's employment by the Company
terminates by reason of Disability (as such term is defined in the Plan), the
portion of the Option, if any, that was exercisable as of the date of
termination of employment may thereafter be exercised by the Employee for a
period of one year from the date of the termination of employment or until the
expiration of the Exercise Period, whichever period is shorter. The portion of
the Option, if any, that was not exercisable as of the date of the termination
of employment shall immediately terminate upon the termination of employment.

<PAGE>

4.3    Other Termination.

4.4.   If Employee's employment is terminated by the Company or the Employee for
any reason other than (i) death or (ii) Disability, the Option, whether or not
then exercisable shall immediately expire on the date of termination.

4.5.   The Committee or Board, in the event the Employee's employment is
terminated for cause, may require the Employee to return to the Company the
economic value of any Option Shares purchased hereunder by the Employee within
the six month period prior to the date of termination. In such event, the
Employee hereby agrees to remit to the Company, in cash, an amount equal to the
difference between the Fair Market Value (as such term is defined in the Plan)
of the Option Shares on the date of termination (or the sales price of such
Shares if the Option Shares were sold during such six month period) and the
Exercise Price of such Shares.

4.6.   Competing With the Company. In the event that, within 18 months after the
date of termination of Employee's employment with the Company, Employee accepts
employment with any competitor of, or otherwise competes with, the Company, the
Committee or Board, in its sole discretion, may require Employee to return to
the Company the economic value of any Option Shares purchased hereunder by the
Employee within the six month period prior to the date of termination or after
the date of termination. In such event, Employee agrees to remit the economic
value to the Company in accordance with Section 5.3(b).

4.7     Withholding Tax. Not later than the date as of which an amount first
becomes includible in the gross income of the Employee for Federal income tax
purposes with respect to the Option, the Employee shall pay to the Company, or
make arrangements satisfactory to the Committee regarding the payment of, any
Federal, state and local taxes of any kind required by law to be withheld or
paid with respect to such amount. The obligations of the Company under the Plan
and pursuant to this Agreement shall be conditional upon such payment or
arrangements with the Company and the Company shall, to the extent permitted by
law, have the right to deduct any such taxes from any payment of any kind
otherwise due to the Employee from the Company.

<PAGE>

5.       Adjustments. In the event of any change in the number of outstanding
shares of Common Stock of the Company occurring as the result of a stock split,
reverse stock split or stock dividend on the Common Stock, after the grant of
this Option, the Company shall proportionately adjust the number of shares of
Stock subject to this Option and the price to be paid on exercise of this
Option. Any right to acquire a fractional share of Stock resulting from any
adjustments will be rounded to the nearest whole share of Common Stock. In the
event of a change in the par value of the Common Stock of the Company which is
subject to this Option, this Option will be deemed to pertain to the shares of
Common Stock resulting from any such change. To the extent that the foregoing
adjustments relate to the Common Stock of the Company, the adjustments will be
made by the Committee or Board whose determination will be final, binding and
conclusive.

6.       Method of Exercise.

7.     Notice to the Company. The Option shall be exercised in whole or in
part by written notice in substantially the form attached hereto as Exhibit A
directed to the Company at its principal place of business accompanied by full
payment as hereinafter provided of the exercise price for the number of Option
Shares specified in the notice.

8.    Delivery of Option Shares. The Company shall deliver a certificate for
the Option Shares to the Employee as soon as practicable after payment therefor.

9.    Payment of Purchase Price.

9.1.      Payment. The Employee shall make cash payments by wire transfer,
certified or bank check or personal check, in each case payable to the order of
the Company; the Company shall not be required to deliver certificates for
Option Shares until the Company has confirmed the receipt of good and available
funds in payment of the purchase price thereof.

9.2.      Payment of  Withholding  Tax.  Any required  withholding  tax shall
be paid in cash.
     .

<PAGE>

10.     Nonassignability. The Option shall not be assignable or transferable
except by will or by the laws of descent and distribution in the event of the
death of the Employee. No transfer of the Option by the Employee by will or by
the laws of descent and distribution shall be effective to bind the Company
unless the Company shall have been furnished with written notice thereof and a
copy of the will and such other evidence as the Company may deem necessary to
establish the validity of the transfer and the acceptance by the transferee or
transferees of the terms and conditions of the Option. 3. 4. Required Holding
Period. This Option and any Common Stock acquired upon its exercise may not be
sold, assigned or otherwise transferred prior to the six month anniversary of
the Grant Date. 5. 6. Company Representations. The Company hereby represents and
warrants to the Employee that: 7.

     (a) the Company, by appropriate and all required action, is duly authorized
     to enter into this Agreement and consummate all of the transactions
     contemplated hereunder; and

     (b) the Option Shares, when issued and delivered by the Company to the
     Employee in accordance with the terms and conditions hereof, will be duly
     and validly issued and fully paid and non-assessable.

11.1.   Employee Representations.  The Employee hereby represents and warrants
to the Company that:
2.

     (a) he or she is acquiring the Option and shall acquire the Option Shares
     for his or her own account and not with a view towards the distribution
     thereof;

     (b) he or she has received a copy of all reports and documents required to
     be filed by the Company with the Commission pursuant to the Exchange Act
     within the last 24 months and all reports issued by the Company to its
     stockholders and a copy of the Plan in effect as of the date of this
     Agreement;

<PAGE>

     (c) he or she understands that he or she must bear the economic risk of the
     investment in the Option Shares, which cannot be sold by his or her unless
     they are registered under the Securities Act of 1933 ("1933 Act") or an
     exemption therefrom is available thereunder and that the Company is under
     no obligation to register the Option Shares for sale under the 1933 Act;

     (d) in his or her position with the Company, he or she has had both the
     opportunity to ask questions and receive answers from the officers and
     directors of the Company and all persons acting on its behalf concerning
     the terms and conditions of the offer made hereunder and to obtain any
     additional information to the extent the Company possesses or may possess
     such information or can acquire it without unreasonable effort or expense
     necessary to verify the accuracy of the information obtained pursuant to
     clause (b)above;

     (e) he or she is aware that the Company shall place stop transfer orders
     with its transfer agent against the transfer of the Option Shares in the
     absence of registration under the 1933 Act or an exemption therefrom as
     provided herein;

     (f) the certificates evidencing the Option Shares shall bear the following
     legends:

                    "The shares represented by this certificate have been
                    acquired for investment and have not been registered under
                    the Securities Act of 1933. The shares may not be sold or
                    transferred in the absence of such registration or an
                    exemption therefrom under said Act."

                    "The shares represented by this certificate have been
                    acquired pursuant to a Stock Option Agreement, dated as of
                    _____________, 199_, a copy of which is on file with the
                    Company, and may not be transferred, pledged or disposed of
                    except in accordance with the terms and conditions thereof."

     (g) he or she will notify the Company of the date of sale and dollar amount
     received on a sale of any of the Option Shares.

<PAGE>

11.   Restriction on Transfer of Stock Option Agreement and Option Shares.
Anything in this Agreement to the contrary notwithstanding and in addition to
the provisions of Section 9 of this Agreement, the Employee hereby agrees that
he or she shall not sell, transfer by any means or otherwise dispose of the
Option Shares acquired by him or her without registration under the 1933 Act, or
in the event that they are not so registered, unless (i) an exemption from the
1933 Act registration requirements is available thereunder, and (ii) the
Employee has furnished the Company with notice of such proposed transfer and the
Company's legal counsel, in its reasonable opinion, shall deem such proposed
transfer to be so exempt.

12.     Miscellaneous.

12.1.  Release. In consideration of the grant of this Option and the right to
purchase the Option Shares under this Option, I surrender all rights to any
previous grant of an option to purchase shares of Common Stock or promise of the
issuance of shares of Common Stock of the Company or promise of other
compensation and release the Company, its officers, directors, employees and
agents, and their respective successors and assigns from any and all actions,
causes of action, suits, debts, dues, sums of money, accounts, reckonings,
bills, covenants, contracts, controversies, agreements, promises, damages,
judgments, executions, claims and demands whatsoever, in law, admiralty or
equity which I, my heirs, executors and administrators ever had, now have or may
have by reason of any previous grant of an option to purchase shares of Common
Stock or promise of the issuance of shares of Common Stock of the Company or
promise of other compensation.

12.2.  Notices. All notices, requests, deliveries, payments, demands and other
communications which are required or permitted to be given under this Agreement
shall be in writing and shall be either delivered personally or sent by
registered or certified mail, or by private courier, return receipt requested,
postage prepaid to the parties at their respective addresses set forth herein,
or to such other address as either shall have specified by notice in writing to
the other. Notice shall be deemed duly given hereunder when delivered or mailed
as provided herein.

12.3.  Plan  Paramount;  Conflicts  with Plan.  This  Agreement and the Option
shall, in all respects, be subject to the terms and conditions of the Plan,
whether or not stated herein. In the event of a conflict between the provisions
of the Plan and the provisions of this Agreement, the provisions of the Plan
shall in all respects be controlling.

<PAGE>

12.4.  Stockholder Rights. The Employee shall not have any of the rights of a
stockholder with respect to the Option Shares until such shares have been issued
after the due exercise of the Option. Nothing contained in this Agreement shall
be deemed to confer upon Employee any right to continued employment with the
Company or any subsidiary thereof, nor shall it interfere in any way with the
right of the Company to terminate Employee in accordance with the provisions
regarding such termination set forth in Employee's written agreement with the
Company, or if there exists no such agreement, to terminate Employee at will.

12.5.  Waiver.  The  waiver  by any  party  hereto  of a  breach  of any
provision of this Agreement shall not operate or be construed as a waiver of any
other or subsequent breach.

12.6.  Entire Agreement. This Agreement constitutes the entire agreement between
the parties with respect to the subject matter hereof. This Agreement may not be
amended except by writing executed by the party to be charged.

12.7.  Binding Effect; Successors. This Agreement shall inure to the benefit of
and be binding upon the parties hereto and, to the extent not prohibited herein,
their respective heirs, successors, assigns and representatives. Nothing in this
Agreement, expressed or implied, is intended to confer on any person other than
the parties hereto and as provided above, their respective heirs, successors,
assigns and representatives any rights, remedies, obligations or liabilities.

12.8.  Governing Law. This Agreement shall be governed by and construed in
accordance with the laws of the State of New York (without regard
to choice of law provisions).

12.9.  Headings. The headings contained herein are for the sole purpose of
convenience of reference, and shall not in any way limit or affect the meaning
or interpretation of any of the terms or provisions of this Agreement.

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

ENVIRO-RECOVERY, INC.                       Address:

                                            2200 East Lake Shore Dr
By: /s/ Steven G. Schock                    Ashland, WI 54806
   --------------------------------
         Steven G. Schock
EMPLOYEE:                                   Address:
/s/ David Neitzke
____________________________________        Route 1  Box 264B
Signature
____________________________________        Washburn, WI 54891
David Neitzke

<PAGE>

                                                                  EXHIBIT A
                      FORM OF NOTICE OF EXERCISE OF OPTION

________________________
           DATE

Enviro-Recovery, Inc.

___________________________
___________________________
___________________________

          Re:      Purchase of Option Shares

Gentlemen:

                  In accordance with my Stock Option Agreement dated as of
______________, 199_("Agreement") with Enviro-Recovery, Inc. ("Company"), I
hereby irrevocably elect to exercise the right to purchase _________ shares of
the Company's common stock, par value $.0001 per share ("Common Stock"), which
are being purchased for investment and not for resale.

                  As payment for my shares, enclosed is (check and complete
applicable box[es]):

                 |_|   a [personal check] [certified check] [bank check] payable
                       to the order of "Enviro-Recovery, Inc." in the sum of
                       $_________; and/or

                 |_|   confirmation of wire transfer in the amount of $________.

                  I hereby represent, warrant to, and agree with, the Company
that:

(i) I have acquired the Option and shall acquire the Option Shares for my own
account and not with a view towards the distribution thereof;

(ii) I have received a copy of all reports and documents required to be filed by
the Company with the Commission pursuant to the Exchange Act within the last 24
months and all reports issued by the Company to its stockholders;

(iii) I understand that I must bear the economic risk of the investment in the
Option Shares, which cannot be sold by me unless they are registered under the
Securities Act of 1933 ("1933Act") or an exemption therefrom is available
thereunder and that the Company is under no obligation to register the Option
Shares for sale under the 1933 Act;

(iv) in my position with the Company, I have had both the opportunity to ask
questions and receive answers from the officers and directors of the Company and
all persons acting on its behalf concerning the terms and conditions of the
offer made hereunder and to obtain any additional information to the extent the
Company possesses or may possess such information or can acquire it without
unreasonable effort or expense necessary to verify the accuracy of the
information obtained pursuant to clause (ii) above;

(v)  I am aware that the Company shall place stop transfer orders with its
transfer agent against the transfer of the Option Shares in the absence of
registration under the 1933 Act or an exemption therefrom as provided herein;

(vi) my rights with respect to the Option Shares shall, in all respects, be
subject to the terms and conditions of this Company's 1996 Performance Equity
Plan and the Stock Option Agreement; and

(vii) the certificates evidencing the Option Shares shall bear the following
legends:

                    "The shares represented by this certificate have been
                    acquired for investment and have not been registered under
                    the Securities Act of1933. The shares may not be sold or
                    transferred in the absence of such registration or an
                    exemption therefrom under said Act."

                    "The shares represented by this certificate have been
                    acquired pursuant to a Stock Option Agreement, dated as
                    of________________, 199__, a copy of which is on file with
                    the Company, and may not be transferred, pledged or disposed
                    of except in accordance with the terms and conditions
                    thereof."

(ix)  I will notify the Company whenever I sell any of the Option Shares and
report to the Company the sale price of the Option Shares.

(x)   Kindly forward to me my certificate at your earliest convenience.

Very truly yours,

---------------------------------         ----------------------------------
(Signature)                               (Address)

---------------------------------         ----------------------------------
(Print Name)                              (Address)

                                          -----------------------------------
                                          (Social Security Number)

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