Important proxy voting information
                for the Shareholders Meeting for May 7, 2001

                Paul Mueller Company (NASDAQ: MUEL)


April 24, 2001

Dear Fellow Shareholder:

There are several points the Sheet Metal Workers Local 208 would
like to bring to your attention prior to the shareholders meeting
on May 7, 2001.

Last year, following the shareholders meeting, Don Golik, the
Company's Chief Financial Officer, was quoted in the Springfield
News-Leader as saying, "We (management) feel that we have a lot
of smaller shareholders that are not as sophisticated as larger
institutional investors."  This was his explanation for the
reason why last year's poison pill proposal failed. This is an
insult to your intelligence!

In 1991 the board of directors adopted a poison pill without a
shareholder vote.  That pill expired three months ago on January
29, 2001.  Rather than wait until the upcoming shareholders
meeting on May 7 and let you vote on whether to have a pill, the
current directors imposed a new pill.  Shouldn't shareholders
have final say over whether their company has a poison pill?
That is all this year's proposal would require.

A "poison pill" consists of a plan under which anyone's attempt
to buy more than a certain percentage of the Company's stock
without Board approval triggers a right in all other shareholders
to buy shares at a discount, thus diluting the purchaser's stock.
The practical effect of such a plan is to force someone
interested in buying a large block of stock to get permission
from the directors.  Such a plan represents Board interference in
your ability to decide when and to whom to sell your stock.
Realizing this, the largest institutional shareholders voted in
favor of eliminating the poison pill last year.

A pill opens the door to directors using their veto power to keep
themselves or management friends from losing their positions.
The temptation offered by a pill should be eliminated.  At this
year's shareholders meeting, you have a second chance to vote
against the pill imposed by the board of directors.

With respect to the Company's board of directors, corporate
governance experts believe a majority of independent directors is
better than a majority of inside directors.  Up for reelection
this year is David T. Moore, the 29-year old grandson of Paul
Mueller.  He was first elected in 1997 at age 25, is not employed
by the Company and has no experience in the Company's business.
There is no evidence to believe that he is the "heir apparent."
His presence on the 7-member board gives the inside directors the
majority they desire.

We have located an excellent alternative candidate for
shareholders.  He is Jay E. Sushelsky, a business attorney with
more than 18 years experience representing primarily small
businesses.  He has no prior dealings with Local 208, and has
never represented a union.  In fact, as an attorney he has
represented clients in suits against unions.  Mr. Sushelsky has
given no indication to Local 208 what he would do with respect to
any particular employee issues.  Instead, he will bring greater
independence to the board of directors which we believe will
benefit both employees and shareholders.

Management has tried to make you think that our proxy
solicitation is just a bargaining tactic for the sake of contract
negotiations. However, Local 208 ratified the Company's last
offer on April 7, 2001.  A new 3-year collective bargaining
agreement is now in effect.  Management's attacks on our motives
are unfounded and irrelevant.

Accordingly, we urge you to vote FOR Jay E. Sushelsky as a
director and to vote FOR our proposal requiring shareholder
approval before a poison pill continues in effect.  If you have
already signed and returned a proxy card sent to you by the
Company, you may revoke your previously signed proxy by simply
signing and returning our proxy card, with a later date, in the
enclosed envelope.  If you have any questions, feel free to call
1-800-457-7694.