Amendment No. 1

To the Adoption Agreement for the
Paul Mueller Company Profit Sharing and Retirement Savings Plan



Pursuant to the provisions of Article XV of the Plan, the Adoption Agreement is hereby amended, effective January 1, 2004,as follows:

|1. | By the substitution of Section IV.B. and the accompanying chart with the following, allowing immediate eligibility for purposes of elective deferrals:
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------
|   | "IV.                                                                                                                                                  



|Contribution Type                       | Minimum Age | Service Requirement | Class Exclusion | Eligibility Computation Period | Entry Date
|--------------------------------------- | ----------- | ------------------- | --------------- | ------------------------------ | ----------
|All Contributions                       | 1           |                     | 6, 8            | 3                              | 1         
|Elective Deferrals                      |             | 1                   |                 |                                |           
|Voluntary After-tax                     |             |                     |                 |                                |           
|Required After-tax                      |             |                     |                 |                                |           
|Safe Harbor Contribution*               |             |                     |                 |                                |           
|Non-Safe Harbor Match -- 
    Formula 1 |             | 4                   |                 |                                |           
|QNECs                                   |             |                     |                 |                                |           
|OMACs                                   |             |                     |                 |                                |           
|Employer Discretionary                  |             |                     |                 |                                |           
|Non-Safe Harbor Match -- 
    Formula 2 |             | 4                   |                 |                                |           



|*If any age or Service requirement selected is more restrictive than that which is imposed on any Employee contribution, that group of Employees will be subject to the ADP and/or ACP testing as prescribed under IRS Notices 98-52, 2000-3 and any applicable IRS Regulations.
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| |  | A. | Age:    
| |  | -- | --------
| |  |    | 1.      
| |  |    | 2.      
| |  | B. | Service:
| |  |    | 1.      
| |  |    | 2.      
| |  |    | 3.      



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|   |                                                                                                                                                 |                   | 4.                                                                                                                               | 1 Year of Service or Period of Service.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------- | ----------------- | -------------------------------------------------------------------------------------------------------------------------------- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|   |                                                                                                                                                 |                   | 5.                                                                                                                               | 2 Years of Service or Periods of Service.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|   |                                                                                                                                                 |                   | 6.                                                                                                                               | 1 Expected Year of Service.  May enter after six (6) months of actual Service.                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|   |                                                                                                                                                 |                   | 7.                                                                                                                               | 1 Expected Year of Service.  May enter after months of actual Service [must be less than one (1) Year].                                                                                                                                                                                                                                                                                                                                                                                                                                        
|   |                                                                                                                                                 |                   | 8.                                                                                                                               | 1 Expected Year of Service.  May enter after months of actual Service [must be less than one (1) Year].                                                                                                                                                                                                                                                                                                                                                                                                                                        
|   |                                                                                                                                                 |                   | 9.                                                                                                                               | Completion of Hours of Service within the month(s) time period following an Employee's commencement of employment.                                                                                                                                                                                                                                                                                                                                                                                                                             
|   |                                                                                                                                                 |                   |                                                                                                                                  | No more than 83-1/3 Hours of Service may be required during each such month; provided, however, that the Employee shall become a Participant no later than upon the completion of 1,000 Hours of Service within an Eligibility Computation Period and the attainment of the minimum age requirement.

The maximum Service requirement for Elective Deferrals is 1 year.  For all other contributions, the maximum is 2 years.  If a Service requirement greater than 1 year is selected, Participants must be 100% vested in that contribution.
|   |                                                                                                                                                 |                   | A Year of Service for eligibility purposes is defined as follows (choose one):

Do not enter this definition in the table above.
|   |                                                                                                                                                 | [X]               | 10.                                                                                                                              | Not applicable.  There is no Service requirement.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|   |                                                                                                                                                 | [   ]             | 11.                                                                                                                              | Not applicable.  The Plan is using Expected Year of Service or has a Service requirement of less than one (1) year.                                                                                                                                                                                                                                                                                                                                                                                                                            
|   |                                                                                                                                                 | [X]               | 12.                                                                                                                              | Hours of Service method.  A Year of Service will be credited upon completion of 1,000 Hours of Service.  A Year of Service for eligibility purposes may not be less than 1 Hour of Service nor greater than 1,000 hours by operation of law.  If left blank, the Plan will use 1,000 hours.                                                                                                                                                                                                                                                    
|   |                                                                                                                                                 | [   ]             | 13.                                                                                                                              | Elapsed Time method."                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|2. | By the substitution of Section V.B.2. with the following, changing the number of completed Years of Service necessary for Early Retirement Age:
|   | "B.                                                                                                                                             | Early Retirement:
|   |                                                                                                                                                 | [   ]             | 1.                                                                                                                               | Not applicable.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|   |                                                                                                                                                 | [X]               | 2.                                                                                                                               | The Plan shall have an Early Retirement Age of 55 (not less than age 55) and completion of 6 Years of Service.                                                                                                                                                                                                                                                                                                                                                                                                                                 
|   |                                                                                                                                                 |                   | 3.                                                                                                                               | The Early Retirement Date shall be:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|   |                                                                                                                                                 |                   |                                                                                                                                  | a.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|   |                                                                                                                                                 |                   |                                                                                                                                  | b.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             



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|3. | By the substitution of Section XV.A.2. with the following, allowing in-service withdrawals of vested contributions at age 59 1/2:
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|   | "XV.                                                                                                                             
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|                                                                                                          |  |  |  | F. | Participants may elect to withdraw all or any part of their Vested Account Balance which has been credited to their account for a period in excess of two years.
|--------------------------------------------------------------------------------------------------------- |  |  |  | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                          |  |  |  | G. | Available for withdrawal only if the Participant is 100% vested."                                                                                               
|IN WITNESS WHEREOF, the Employer hereby causes this Amendment to be executed on this 3rd day of May 2004.
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