================================================================================
      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 2, 2003
================================================================================


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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                              HERCULES INCORPORATED
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               HERCULES SHAREHOLDERS' COMMITTEE FOR NEW MANAGEMENT
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             THE HERCULES SHAREHOLDERS' COMMITTEE FOR NEW MANAGEMENT
                       17 STATE STREET, NEW YORK, NY 10004

                                                                    June 2, 2003

Fellow Hercules Shareholders:

         We have been major Hercules  shareholders  for almost three years. As a
result  of  our   dissatisfaction   with  the  Hercules  Board  and  management,
International  Specialty Products, an international specialty chemicals company,
waged a proxy contest at the Company's  2001 Annual  Meeting,  at which Hercules
shareholders  elected our four  nominees  to seats on the  Hercules  Board.  The
minority  directors  have  endeavored to work with Hercules  management  and the
remaining incumbent  directors.  Our efforts,  however,  have been frustrated by
management and the Board's  majority  directors,  who, voting in lockstep,  have
rebuffed our almost every initiative.(1)

         Although we continued to be sharply critical of the majority  directors
and management for their conduct of the Company's affairs, which in our view has
contributed to the destruction of shareholder  values at the Company,  primarily
in order to provide the Company with one last  opportunity to do the right thing
for  shareholders,  we decided  not to wage a proxy  contest  for control of the
Board at the 2002  Annual  Meeting.  At the  meeting  last  June,  the  minority
directors  issued the following  statement:  "Hercules'  majority  directors and
management  still have the  opportunity  to right  themselves  and  maximize the
potential  of the Company and its  operating  businesses,  but they cannot do so
without  promptly and fully  addressing the issues [we have]  outlined.  We urge
them to accept that challenge."

         Unfortunately,  that  challenge  continues to go unheeded,  and we have
decided to wage a proxy  contest  this year for the four  seats up for  election
because in our view there is no other way in which to help maximize  shareholder
values for all Hercules shareholders.  The Hercules Shareholders'  Committee for
NEW  Management   includes  our  four  current  Hercules  directors   ("minority
directors")  and  four  additional  director  nominees  for this  year's  Annual
Meeting.  Our  directors  and nominees  represent  the interests of all Hercules
shareholders,  including  those of the  Company's  second  largest  shareholder,
International  Specialty  Products Inc.,  which owns almost 10 million shares of
Hercules stock and has an investment in Hercules of more than $140 million.(2)

         In  contrast,   the  four  Hercules  incumbent  directors  running  for
reelection this year own in the aggregate only slightly more than 50,000 shares.
You should know that Joyce owns 157,230  shares,  156,330 of which were GIVEN to
him in connection  with the Company's  bonus program and 900 of which were GIVEN
to him in the form of a matching  grant in connection  with the  Company's  401k
program.  To our  knowledge,  Joyce has not PURCHASED a single share of Hercules
stock since he came to the Company.


--------
(1) You should know that our experience prompted us prior to the 2002 Annual
Meeting to propose - a proposal which was rebuffed - that if Dr. Joyce,
Hercules' Chief Executive, and his majority directors agreed to elect a new
Chairman and CEO, acceptable to both majority and minority directors, we would
abandon consideration of a proxy contest to acquire control of the Hercules
Board at the 2002 Annual Meeting.

(2) ISP's investment is measured at cost.




         As one of  Hercules'  major  shareholders,  our  interests  are clearly
aligned with yours,  and we are committed to  maximizing  value for all Hercules
shareholders as we have invested our own money in Hercules as you have.


             THE HERCULES SHAREHOLDERS' COMMITTEE FOR NEW MANAGEMENT

                 THE COMMITTEE'S FOUR CURRENT HERCULES DIRECTORS

          The four  minority  directors  who  were  elected  at the 2001  Annual
Meeting are:

         SAMUEL  J.  HEYMAN - Mr.  Heyman  began  his  career as a lawyer in the
United  States  Justice  Department  under Robert F. Kennedy and later served as
Chief  Assistant  United  States  Attorney  (New  Haven  Division,  District  of
Connecticut).  In  1968,  Mr.  Heyman  left  Government  service  to run  Heyman
Properties,  a small but  growing  family  business,  which he  expanded  into a
successful, national real estate development company.

         In 1983,  Mr. Heyman and a slate of nominees  representing  shareholder
interests waged a successful proxy contest for control of GAF, in what BARRON'S,
a leading  financial  publication,  characterized  as "one of the most  striking
achievements  in the annals of corporate  finance."  (Aug.  8, 1983) Mr.  Heyman
served  as  GAF's  Chairman  and  Chief  Executive  Officer  (1983-2000)  and is
currently ISP's Chairman and controlling shareholder.

         Mr.  Heyman has been  involved as a  shareholder  activist or potential
acquirer with respect to five public  companies,  helping to create more than $7
billion of increased wealth for shareholders of those companies,  as illustrated
below:(3)



                                                                        Realized Value
                                     Time                                per Share for
                                    Period                 Initial        all Subject                   Stockholder
                          (initial purchase - value          Cost           Company       Percentage   Value Created
       Company                   realization)             Per Share     Shareholders(4)    Increase      (rounded)
----------------------- ------------------------------- --------------- ---------------- ------------- ---------------
                                                                                          
GAF                               1981-1989                 $ 6.50          $53.00           715%      $ 1.6 billion

Union Carbide                     1984-1985                 $43.63          $85.00           95%       $ 2.9 billion

Borg-Warner                       1986-1987                 $29.15          $48.50           66%       $ 1.7 billion

Dexter                            1998-2000                 $25.18          $62.50           148%      $  .9 billion

Life Technologies                 1998-2000                 $35.80          $60.00           68%       $  .2 billion
                                                                                                       ---------------

                                                                     Total Shareholder Value Created:  $ 7.3 billion
                                                                                                       ===============


---------
(3) There is, of course, no assurance that either the efforts of the Committee
or Mr. Heyman will result in similar benefits for Hercules shareholders.

(4) GAF was acquired by Mr. Heyman and a management group in 1989 at $53 per
share. Union Carbide implemented a recapitalization of its own in response to
GAF's premium bid for the Company that resulted in a market value immediately
thereafter of $85 per share. Borg Warner, Dexter and Life Technologies were
acquired by third parties after GAF or ISP made premium offers for those
companies.

                                       2


          SUNIL KUMAR - Mr.  Kumar was  formerly  Executive  Vice  President  of
Bridgestone-Firestone,  heading up that  company's  $3 billion  national  retail
store  operations.  Mr.  Kumar  served for three  years as  President  and Chief
Operating  Officer of Building  Materials  Corporation of America,  the nation's
leading  manufacturer of residential and commercial roofing.  Mr. Kumar has been
Chief Executive of ISP since June 1999.

         GLORIA  SCHAFFER  - Mrs.  Schaffer  has had a  distinguished  career in
Government  service,  having  held major  positions  in  Connecticut,  including
Secretary of State,  Commissioner of the Department of Consumer Protection,  and
State  Senator  for six terms.  Mrs.  Schaffer  was also a Member of the Federal
Civil  Aeronautics  Board and has served as a Board member of several public and
private companies.

         RAYMOND  S.  TROUBH - Mr.  Troubh has had broad  financial  experience,
including  as a General  Partner  of Lazard  Freres & Co.  and  Governor  of the
American Stock  Exchange.  He is a Board member of a number of public  companies
and currently serves as the non-executive Chairman of Enron Corp., having joined
that company's Board in the wake of its financial problems last year.

                     THE COMMITTEE'S FOUR DIRECTOR-NOMINEES

          HARRY FIELDS - Mr.  Fields  served as an executive for more than forty
years at  International  Flavors and Fragrances  Inc., where he was President of
the International Flavor Division and a member of its Board of Directors.  He is
currently  President of Fields Associates,  Ltd. and has served as a director of
other companies.

          ANTHONY T. KRONMAN - Mr. Kronman is currently Dean of Yale Law School.
Mr. Kronman is a director of Adelphia  Communications  Corporation,  having been
elected to the Board after the Company's bankruptcy filing last year.

         VINCENT TESE - Mr. Tese has had a  distinguished  career in  Government
service,  having held the positions of New York State  Superintendent  of Banks,
Director of Economic  Development  for the State of New York,  and  Chairman and
Chief Executive  Officer of the Urban Development  Corporation.  He is currently
the  Chairman of Wireless  Cable  International  Inc. and is a Board member of a
number of public companies.

         GERALD TSAI, JR. - Mr. Tsai was Chairman and Chief Executive Officer of
Primerica  Corporation,  a diversified financial services company, and served as
Chairman  of the  Board,  President  and Chief  Executive  Officer of Delta Life
Corporation, a life insurance and annuity company. Mr. Tsai is currently a Board
member of a number of public companies.

                          REASONS FOR OUR SOLICITATION

         Under  Joyce's  management,  the  Company's  financial  and stock price
performance  have in our opinion  been  disastrous.  Moreover,  we believe  that
Hercules  has been a case study in failed  corporate  governance.  In  addition,
Joyce and the Hercules  Board were  responsible  for selling the Company's  best
business  in our  opinion at the worst  possible  time,  and  management's  poor
business  judgment was in no small measure  responsible  for the Company's  $570
million pension fiasco.

                                       3



         The Committee's four director-nominees, if elected, will, when combined
with our four minority directors, constitute a majority of the Board and will be
in a position to not only avoid the  mistakes of the past but cause the Hercules
Board to take positive actions designed to increase shareholder value, such as:

      o  Focus  on  the  "hands-on"   management  of  Hercules'  businesses  and
         successful, bottom-line operating and growth strategies, both short and
         long term.

      o  Strengthen  the  Hercules  management  team.  We intend to elect a new,
         highly  qualified,  full-time,  "roll up your sleeves" Chief  Executive
         committed  to the  turnaround  of the  Company's  businesses,  who will
         reside in the Wilmington area and whose  compensation  will be designed
         to  closely  align  his  or  her  interests   with  those  of  Hercules
         shareholders.  Moreover,  we will rebuild the management ranks which in
         our  view  have  been  allowed  to  atrophy  under  the  current  Chief
         Executive.

      o  Devote  high-level  attention to not only the  turnaround  of Hercules'
         operating businesses but also the management of the Company's critical,
         non-operating issues, such as the minimization of its pension exposure.

      o  Redeem  the   Company's   poison   pill,   which   prevented   Hercules
         shareholders,  in October 2000,  from accepting  ISP's $17.50 per share
         offer for 25 million  shares - thereby  costing  Hercules  shareholders
         more than $190 million.(5)

      o  Recommend that shareholders remove a Hercules election Bylaw, which the
         Company  claims  requires  the  affirmative  vote of the  holders  of a
         majority of all outstanding shares for the election of directors.

                       THE COMPANY'S PERFORMANCE HAS GONE
                          FROM BAD TO WORSE UNDER JOYCE

     NOTWITHSTANDING  WHAT WE  BELIEVE  TO BE  MANAGEMENT'S  EFFORTS  TO OBSCURE
HERCULES'  ACTUAL FINANCIAL  PERFORMANCE BY THE USE OF "PRO-FORMA"  EARNINGS AND
THE  MISCHARACTERIZATION  OF  CHARGES  AS  "NON-RECURRING"  WHICH  ARE  IN  FACT
RECURRING,  WHEN MEASURED BY VIRTUALLY ANY  FINANCIAL  YARDSTICK,  THE COMPANY'S
RECORD IN RECENT YEARS UNDER JOYCE AND HIS  PREDECESSORS HAS IN OUR OPINION BEEN
DISASTROUS.

     Consider the following:

      o  After  reaching  a high of $66.25 on March 19,  1996,  Hercules'  stock
         price has fallen  more than 85%,  wiping out more than $6.1  billion in
         shareholder  value.  Between the time Joyce became Chief Executive,  on
         May 8, 2001, and February 11, 2003, the day prior to ISP's filing of an
         amendment  to its  Form 13D  which  indicated  that it was  considering
         waging a proxy contest for control of the Hercules Board,  the price of
         Hercules  stock (which has paid no dividends  since that time) lost 32%
         of its value, while the S&P MidCap Specialty Chemicals


---------
(5) Cost to Hercules shareholders calculated on the basis of $17.50 per share
less the Company's stock price of $9.81 per share, as of May 29, 2003.

                                       4



         Index increased by 3.2% (including dividends) -- an underperformance of
         more than 35%.(6)

      o  Hercules'  financial  performance  has in our opinion  gone from bad to
         worse under Joyce,  prompting a financial columnist (Christopher Byron,
         February 17, 2003, NEW YORK POST) to characterize  Hercules as "spewing
         red ink in all  directions".  Under  Joyce,  the  Company  has not been
         profitable in 6 of the last 7 reported quarters,  registering more than
         $300 million in after-tax losses (even excluding an almost $400 million
         "goodwill" and FAS 143  write-down).  For the 7 full reported  quarters
         since Joyce became CEO, even  adjusting for almost $385 million in net,
         after-tax,  "non-recurring"  charges as well as the almost $400 million
         of additional charge-offs, the Company has managed to register only $78
         million in "pro  forma"  earnings  -- or little more than an average of
         $0.41 per share per annum.

      o  In BUSINESS WEEK'S recent  performance  ranking of companies in the S&P
         500 index  (BUSINESS  WEEK,  Report Card on 500 S&P  Companies,  Spring
         Issue,  2003),  Hercules'  performance was ranked 482 out of 500 - down
         from 466 in the previous  year.  In  connection  with its ranking,  the
         Company received the following grades:



                                             PERFORMANCE RANKINGS

        ====================================================================================================
                                    Total    Total             Sales              Profit
                                    Return   Return  Sales     Growth   Profit    Growth            Return
        Rank      Rank              (1       (3      Growth    (3       Growth    (3       Net      on
        2003      2002              Year)    Years)  (1 Year)  Years)   (1 Year)  Years)   Margin   Equity
        --------- ------ ---------- -------- ------- --------- -------- --------- -------- -------- --------
                                                                   
        482       466    Hercules   D        D       D         F        F         F        F        F
        ====================================================================================================



         Similarly,   in  FORTUNE'S  ranking  of  the  Fortune  1000  Industrial
         Companies (April 4, 2003) in terms of 2002  profitability  vs. 2001 and
         2002   profitability   as  a  percentage  of  revenues,   assets,   and
         shareholders   equity,   Hercules  was  ranked  35,  36,  36,  and  32,
         respectively, out of 36 chemicals companies.

      o  As  detailed  in the table  below,  Joyce,  operating  as his own Chief
         Financial  Officer,  has  become  in  our  opinion  the  master  of the
         one-time,  "non-recurring"  charge, taking substantial  "non-recurring"
         charges in all 7 quarters  since he came


---------
(6) On May 8, 2001, Hercules shares closed on the New York Stock Exchange at $12
per share, and, on February 11, 2003, Hercules shares closed at $8.12 per share.
It should be noted that Hercules shares have rallied since ISP's February 11th
13D filing, and the current price, as of the close on May 29, 2003, was $9.81
per share. Between May 8, 2001, and May 29, 2003, Hercules stock lost 18% of its
value, while the S&P MidCap Specialty Chemicals Index increased by 15%
(including dividends) -- an underperformance for Hercules of 33%.

We believe that the S&P MidCap Specialty Chemicals Index, which consists of 8
specialty chemicals companies with a mean market capitalization of $1.16
billion, is the most relevant index, although it should be noted that Hercules,
starting more than 20 years ago when it was a completely different and much
larger company, has been listed in the S&P 500 Chemicals Index. We do not
believe that that index, which is comprised of 14 companies including Dupont and
Dow and other companies with a mean market capitalization of $8.94 billion, with
Hercules being by far the smallest, is an appropriate reference point with
regard to Hercules' performance. Even so, Hercules' stock price has
substantially underperformed the S&P 500 Chemicals Index as well over the
relevant time frame.

                                       5



         to Hercules -- and doing so in a manner which misleadingly implies that
         these charges or "adjustments" are one-time items(7).




                                                  2001                2002               2003
                                                  ----                ----               ----
                                                Q3    Q4     Q1     Q2     Q3     Q4      Q1   TOTAL
--------------------------------------------- ------ ------ ------ ------ ------ ------ ------ -----
                                                                        
Restructuring Charges                         0.30   0.03   0.02   0.04   0.03   0.04   0.01    0.47
--------------------------------------------- ------ ------ ------ ------ ------ ------ ------ -----
Loss on Sale of Betz                                        2.11                                2.11
--------------------------------------------- ------ ------ ------ ------ ------ ------ ------ -----
Asbestos Reserve                                                          0.39                  0.39
--------------------------------------------- ------ ------ ------ ------ ------ ------ ------ -----
Early Debt Retirement                                              0.25          0.01           0.26
--------------------------------------------- ------ ------ ------ ------ ------ ------ ------ -----
Tax Adjustments                                             0.03   0.02   0.08   0.01           0.14
--------------------------------------------- ------ ------ ------ ------ ------ ------ ------ -----
Asset Impairment                                                   0.04          0.01           0.05
--------------------------------------------- ------ ------ ------ ------ ------ ------ ------ -----
Other                                         0.29          0.01   0.02   0.01                  0.34
--------------------------------------------- ------ ------ ------ ------ ------ ------ ------ -----
Total "Non-Recurring" Charges and             0.59   0.03   2.17   0.37   0.52   0.07   0.01    3.76
"Adjustments"
--------------------------------------------- ------ ------ ------ ------ ------ ------ ------ -----


         You should know that the SEC is seriously concerned about the misuse of
"pro forma"  earnings by public  companies  and the  practice of  characterizing
charges  which are in  effect  recurring  as  "non-recurring"  because  of their
tendency to mislead  investors.  Under GAAP,  charges  which are likely to recur
should not be  characterized  as  "non-recurring."  In  accordance  with new SEC
regulations,   which  seek  to  reflect  long-standing  policy,   companies  are
prohibited from  characterizing  as  "non-recurring"  items which are "likely to
recur  within  the next two  years or if there was a  similar  charge  [or gain]
within  the prior two  years."  We  estimate  that  Hercules'  2002 "pro  forma"
earnings,  had they excluded only those charges which were truly "non-recurring"
in accordance  with GAAP,  would have been little more than 50% of the $0.63 per
share in earnings the Company actually reported.

         ASK YOURSELF:

         DO YOU BELIEVE THAT HERCULES' "PRO FORMA"  EARNINGS,  WHICH EXCLUDE THE
ABOVE-MENTIONED  "NON-RECURRING"  CHARGES,  CAN BE  RELIED  UPON AS AN  ACCURATE
MEASURE OF THE COMPANY'S FINANCIAL PERFORMANCE?

                                       AND

         DON'T YOU BELIEVE THAT JOYCE'S  PENCHANT  FOR THE  FINANCIAL  REPORTING
PRACTICES  JUST  DESCRIBED IS RELATED TO HIS REFUSAL FOR ALMOST TWO YEARS NOW TO
BRING A CHIEF FINANCIAL OFFICER TO THE COMPANY?

      o  Even after adjusting for "one-time" charges and goodwill  amortization,
         Hercules' financial performance has been extremely disappointing,  with
         2002 earnings  being little more than 50% of results for 2000 (the last
         full year prior to Joyce's  arrival at Hercules).  "Pro forma" earnings
         per share for 2000-2002 have been as follows:(8)

----------
(7) The table excludes non-recurring gains and pro-forma adjustments.

(8) 2000 "pro forma" earnings per share includes earnings and related interest
expenses for the BetzDearborn business and excludes goodwill amortization
consistent with the Company's "pro forma" earnings for 2001 and 2002. "Pro
forma" 2001 and 2002 earnings per share exclude the earnings and related
interest expenses for the BetzDearborn business which was sold.

                                       6



                         2000                     $ 1.12
                         2001                       0.04
                         2002                       0.63


      o  Moreover,  Hercules' financial performance (again even after adjustment
         for non-recurring  charges and on a "pro forma" basis) continues to lag
         the specialty chemicals industry (as measured by 8 companies in the S&P
         MidCap  Specialty  Chemicals  Index).  In 2002,  for example,  Hercules
         revenue  growth  was only  2.5%  compared  with  5.7% for the  weighted
         average of companies in the Index, while its return on assets and sales
         (excluding  goodwill  writedowns) were only  approximately 50% and 70%,
         respectively,  of the  returns  for  the  same 8  companies.  By way of
         update, Hercules' performance in the first quarter of 2003 continued to
         lag the average  performance  of the 8 Index  companies with respect to
         all three metrics.

                   JOYCE'S RECORD AT UNION CARBIDE FORESHADOWS
                    HIS PERFORMANCE AT HERCULES - DISASTROUS
                     FINANCIAL PERFORMANCE, BROKEN PROMISES,
                           AND OUTRAGEOUS COMPENSATION

         Joyce is in our view doing to  Hercules  what he did to Union  Carbide.
     Prior to coming to  Hercules,  Joyce  spent his entire  business  career at
     Union Carbide, and you should be aware of these FACTS concerning his record
     as Union Carbide's Chief Executive (1995 - 2000):

         o  Under Joyce's  leadership,  Union Carbide's net income declined from
            $925  million in 1995 to $162  million in 2000 - down an  astounding
            82% - making Union  Carbide's  performance  the worst in the S&P 500
            Chemicals Index (consisting of the 15 largest chemicals companies at
            that time).

         o  Despite Joyce's cost cutting efforts at Union Carbide, the Company's
            operating  margins  declined  from  16.2%  in 1995 to 2.7% in  2000,
            regularly  ranking  the  company in the bottom  quartile  of the S&P
            Chemicals  Index for  return on  assets,  including  last in Joyce's
            final year.

         o  Joyce's efforts to grow Union Carbide were in our view nothing short
            of disastrous, as he invested $5.2 billion in capital expansions and
            acquisitions  (70% of the Company's  entire EBITDA for the period!),
            with the following  results:  Asset growth of 7.7% per annum,  sales
            growth of 2.3% per annum,  and  operating  return on assets of 2% in
            2000 compared with 17% in 1995.

         o  Joyce's  credibility with Union Carbide  shareholders was undermined
            by repeated broken promises.

            (1)   In 1997,  Joyce advised analysts that Union Carbide planned to
                  meet or exceed a 15% return on capital  over the course of the
                  chemical cycle,  while earning an 8% return at the trough.  IN
                  FACT,  Union Carbide's  returns on capital were actually 3% at
                  the trough of the chemical industry cycle in 2000.

                                       7



            (2)   In early 1999, Joyce told Union Carbide  shareholders that the
                  Company was "in good shape entering 1999". IN FACT,  operating
                  income was down 30% in 1999 compared with the previous year.
            (3)   On July 26,  1999,  little more than 60 days before the end of
                  the quarter,  Joyce informed Union Carbide  shareholders  that
                  "prospects   for  improved  third  quarter   earnings   appear
                  encouraging based upon current conditions." IN FACT, operating
                  income  was down in the  third  quarter  compared  to both the
                  previous quarter and the same quarter in 1998.
            (4)   One  commitment  that Joyce staked his  reputation  on was his
                  often-repeated promise that Union Carbide would earn a minimum
                  of $4 per share in 2000. In a grandstand  move,  characterized
                  in an October 13, 1997 BUSINESS WEEK article entitled, "Smoke,
                  Mirrors,   and  the  Boss'   Paycheck,"   as  "clever   public
                  relations...unlikely  to dent Joyce's wallet or stoke up Union
                  Carbide's  performance," Joyce committed to forfeit his salary
                  if  Union  Carbide  did not earn $4 per  share in 2000.  As it
                  turned out, Union  Carbide's  earnings for 2000 were $1.18 per
                  share and,  notwithstanding his public commitment,  Joyce took
                  his full salary and bonus anyway!

         o  Notwithstanding  Union Carbide's dismal  performance during the five
            years that he was Chief Executive, Joyce's total annual compensation
            increased  almost three fold--from $8.8 million per annum in 1995 to
            $23.3 million per annum in 1999. (9)

         o  Finally,  after five years of Joyce's  leadership at Union  Carbide,
            the Company was acquired by Dow Chemical. Of Joyce's tenure at Union
            Carbide,  James  Kelleher of Argus  Research  observed in a DELAWARE
            NEWS JOURNAL article (May 17, 2001),  entitled "Hercules Chief Knows
            Trouble," "I think he had a better reputation as a scientist than an
            administrator.   He  did   virtually   nothing  with  the  Company."
            Similarly, in the same article, Paul Leming, an ING Barings security
            analyst, had this to say about the condition of Union Carbide at the
            conclusion  of  Joyce's  tenure  - "The  wheels  were  coming  off."
            Finally, in a BUSINESS WEEK article entitled, "Formula For A Perfect
            Marriage" (Diane Brady,  August 16, 1999),  Joyce  acknowledged that
            Union Carbide's poor  performance  had led to the Dow takeover.  The
            BUSINESS WEEK article went on to observe,  "For the team in Danbury,
            the deal is bound  to be  bittersweet.  Union  Carbide  has  faced a
            litany of woes in recent years, from troubled partnerships in places
            like Kuwait to delayed plant  openings.  Joyce also spent heavily on
            new facilities, but the payoff eluded his company."

---------
(9) 2000 numbers are not available because of the Dow merger. Total annual
compensation includes, as per Union Carbide's proxy statements, stock option
grants, assuming 10% per annum appreciation.

                                       8



                   JOYCE'S COMPENSATION CONTINUES TO ESCALATE
                        WHILE THE FORTUNES OF THE COMPANY
                           AND ITS SHAREHOLDERS SUFFER

         To  add  insult  to  injury  in the  face  of  Hercules'  disappointing
financial performance, Joyce enjoys what we believe to be outrageously excessive
compensation - all at the expense of Hercules shareholders.

Consider these facts about Joyce's  compensation  package in light of his "track
record" and then ask yourself: - DID HE EARN IT?

      o  When  Joyce  came to  Hercules  in May  2001,  he was  given  a  golden
         parachute  agreement  which  would  provide him today with a payment of
         almost $10  million in the event of a "change  in  control,"  which was
         defined  to  include  a  shift  in the  composition  of a  majority  of
         directors as a result of a proxy contest.

      o  For Joyce's seven months on the job in 2001 (he came to Hercules in May
         of that  year),  a year in which the Company  registered  a $58 million
         loss, in addition to stock options for 1,250,000 shares, Joyce was paid
         a salary at the rate of $1 million per annum and was given a $1 million
         bonus for his seven months on the job.

      o  For 2002,  a year in which the  Company  posted a loss of $248  million
         (excluding a $368 million  write-down of goodwill),  in addition to his
         $1  million  annual  salary,  Joyce was  given a bonus of $1.9  million
         ($900,000 of which was given to him in the form of Hercules  stock at a
         15% discount) and additional stock options for 600,000 Hercules shares.

      o  On April 23, 2003, the Board's Compensation Committee proposed that the
         Board give Joyce a GRANT of 211,000-500,000  restricted shares, to vest
         upon a "change in control" defined to include,  among other things, the
         Committee's  winning  this  very  proxy  contest,  with the  amount  of
         restricted  shares  depending  upon the price of Hercules  stock at the
         time  of the  change  in  control.  YOU  SHOULD  KNOW  THAT,  IN  PRIOR
         DISCUSSIONS WITH THE COMPENSATION  COMMITTEE,  JOYCE HAD INSISTED ON AN
         EVEN LARGER GRANT THAN THE ONE THE COMMITTEE  PROPOSED.  ONLY AFTER THE
         OBJECTION OF OUR MINORITY DIRECTORS AT THE APRIL 24TH BOARD MEETING AND
         THE  ACKNOWLEDGEMENT BY ONE OF THE MAJORITY DIRECTORS THAT THE PROPOSED
         COURSE OF ACTION  WOULD  NOT "READ  WELL ON THE FRONT  PAGE OF THE WALL
         STREET  JOURNAL," DID THE BOARD DECIDE TO DEFER ACTION ON JOYCE'S GRANT
         UNTIL A LATER TIME.

         On May 20, 2003, the  Compensation  Committee again approved,  over the
         objection of the one  minority  director on the  committee,  a GRANT to
         Joyce,  subject to Board  consent,  of  restricted  shares valued at $3
         million with the same above-mentioned  vesting position. As of the date
         of this letter, the Board has not yet taken action on this matter.

      o  For  2002,   including  the  value  of  Joyce's   long-term   incentive
         compensation,  Joyce's total  compensation  of $6 million easily ranked
         him  higher  than any CEO

                                       9



         of the eight companies in the S&P Mid-Cap  Specialty  Chemicals Index -
         with his  compensation  being  almost  2-1/2  times the average for the
         eight companies.

      You should know that,  in the event that Joyce's  management is repudiated
      in this proxy  contest,  we estimate that he will have been paid more than
      $29  million  for his two  years  on the  job.(10)  ASK  YOURSELF  WHETHER
      HERCULES  IS BEING RUN MAINLY FOR YOUR  BENEFIT OR FOR THE  BENEFIT OF ITS
      CHIEF EXECUTIVE.

                 THE BETZDEARBORN SALE - JOYCE AND THE HERCULES
                    BOARD, AFTER REFUSING TO SEEK SHAREHOLDER
                   APPROVAL, SELL WHAT WE SAW AS THE COMPANY'S
                         BEST BUSINESS AT THE WORST TIME

         Last  year's  sale of the  Company's  BetzDearborn  business to General
Electric was in our view a major  strategic  mistake and raises the most serious
question as to whether Hercules has been run in the interests of its bondholders
at the expense of the Company's  shareholders.  Moreover,  this  transaction has
unfortunately  had the effect of significantly  reducing the future value of the
Company and the upside with respect to all of our investments.

         By  way  of   background,   Hercules'   $3.1  billion   acquisition  of
BetzDearborn in 1998, which has been characterized by Paul Leming as "one of the
worst acquisitions in the history of the chemicals industry" (July 18, 2000), is
a dramatic  example of the  Company's  "buy  high-sell  low"  strategy.  For the
subsequent  sale  last year  consisted  of most of the  BetzDearborn  businesses
originally acquired by Hercules, with the net sale price being the equivalent of
1.7 x sales compared to the 2.4 x sales paid by Hercules in 1998.

         You should know that last  year's  decision  to sell  BetzDearborn  was
taken by an 8-5 vote over the objection of the four  minority  directors and one
majority  director  (not one of  Joyce's  hand-picked  directors,  but  rather a
director elected during the term of a previous management).  The sale would have
only made sense in our  opinion had the  Company no other way to  refinance  its
debt.  For private sale  multiples in the  chemicals  industry in 2001 (when the
price was established) were, as illustrated in the table that follows,  at their
lowest  level in more than 10 years,  with only the most  desperate  of  sellers
selling major businesses in that  inhospitable  environment.  In a Deutsche Bank
Securities report entitled, "Surviving a Harsh Climate" (September, 2002), David
Begleiter credited the BetzDearborn sale (along with three smaller transactions)
with having reset the valuation benchmarks for specialty chemicals  transactions
from the 10-12x  EBITDA  range in the late 90's to 7-8x  EBITDA in 2002.  And if
there were any doubt as to the poor timing of the BetzDearborn  sale, you should
know that  multiples  have  rebounded  to some  extent  after  the  BetzDearborn
transaction.


---------
(10) The $29 million estimate assumes final Board approval of the $3 million
restricted share grant recommended by the Compensation Committee.

                                  10



            SPECIALTY CHEMICALS PRIVATE SALE MULTIPLES (1992 - 2002)


                              [LINE CHART OMITTED]



                                                                                                    BetzDearborn
                                                                                                    Sale Price
                                                                                                    Established
                                    --------------------------------------------------------------------------------
                                     1992   1993    1994   1995   1996   1997    1998    1999   2000    2001    2002
--------------------------------------------------------------------------------------------------------------------
                                                                               
Private Sale Transaction Multiples   8.3x   9.9x   10.7x   8.3x   9.6x   9.5x   10.0x   10.9x   8.1x    7.4x    8.3x
--------------------------------------------------------------------------------------------------------------------


         WHAT  HERCULES AT THE TIME OF THE SALE FAILED TO  COMMUNICATE,  TO BOTH
ITS SHAREHOLDERS AND WALL STREET ANALYSTS WHO FOLLOW THE COMPANY, IS THAT IT HAD
AVAILABLE  WHAT WE  BELIEVE TO HAVE BEEN A  SUPERIOR  ALTERNATIVE.  PRIOR TO THE
COMPANY'S  DECISION TO SELL  BETZDEARBORN,  MAJOR  BANKS  OFFERED THE COMPANY AN
ATTRACTIVE REFINANCING PACKAGE WHICH WOULD NOT HAVE REQUIRED THE COMPANY TO MAKE
ILL-TIMED ASSET SALES.

         Sale  proceeds,   after  taxes  and  transaction  costs,   amounted  to
approximately 6 x estimated 2002 EBITDA,  while the Company's  already depressed
public  stock price at the time was trading at a multiple of  approximately  7 x
EBITDA -- a move hardly calculated to increase shareholder value!  Moreover, the
sale was made at a time when forward  operating  profits for the  business  were
estimated by Hercules to increase  substantially  as a result of cost reductions
already implemented. Finally, the sale of the business has substantially diluted
the  Company's  earnings  due in part to the fact that  Hercules was required to
utilize the net sale proceeds to pay down debt carrying  relatively low interest
rates (approximately 5% on average).

         YOU SHOULD KNOW THAT THE HERCULES  BOARD ACTION  APPROVING THE SALE WAS
TAKEN  NOTWITHSTANDING  THE  FACT  THAT  OTHER  MAJOR,   INSTITUTIONAL  HERCULES
SHAREHOLDERS,  TOGETHER WITH  OURSELVES,  HAD URGED JOYCE TO REJECT THE SALE AND
RETAIN  THE  BETZDEARBORN  BUSINESS.   MOREOVER,  WHEN  THE  MINORITY  DIRECTORS
REQUESTED THAT THE MOTION  APPROVING THE  TRANSACTION BE AMENDED TO REQUIRE THAT
THE SALE BE SUBMITTED TO A  SHAREHOLDERS'  VOTE,  THEY WERE RULED "OUT OF ORDER"
AND THE  ISSUE OF  SHAREHOLDER  APPROVAL  WAS NEVER  SUBMITTED  TO A VOTE OF THE
BOARD.

         DON'T YOU BELIEVE THAT, WHERE THERE IS SIGNIFICANT  QUESTION CONCERNING
A COURSE OF ACTION  INVOLVING  A  SUBSTANTIAL  SALE OF ASSETS  (AT A PRICE,  FOR
EXAMPLE,

                                       11



EQUIVALENT TO ALMOST TWICE THE COMPANY'S  ENTIRE  MARKET  VALUE),  JOYCE AND THE
BOARD, KNOWING OF SIGNIFICANT SHAREHOLDER OPPOSITION,  SHOULD HAVE SUBMITTED THE
MATTER  TO A VOTE OF  HERCULES  SHAREHOLDERS  EVEN  WHEN  THEY MAY NOT HAVE BEEN
LEGALLY REQUIRED TO DO SO?

              THE REVOLVING DOOR AT HERCULES - SIX CHIEF EXECUTIVES
                 IN SIX YEARS AND NO APPARENT BUSINESS STRATEGY

         The primary  responsibilities  of a Company's Board of Directors are to
attract and manage by appropriate objectives capable chief executives as well as
establish policies and business  strategies for the Company. By this standard of
measurement,  the  Hercules  Board in recent  years has been in our  opinion  an
extraordinary failure.

         Between  1996-2001,   Hercules  had  six  different  Chief  Executives,
awarding one an estimated  $14.25 million  severance  package for three years of
service and another a $6 million  package  after only 16 months on the  job.(11)
Joyce came to Hercules in May,  2001, and his election was in our opinion a last
minute attempt by the Board to deflect criticism leveled against it in the proxy
contest  that  Hercules  was being run on  "autopilot."  Joyce  retired from Dow
Chemical after selling Union Carbide in February 2001, lives in Connecticut more
than 200 miles from the Hercules Wilmington  headquarters and has been unwilling
to relocate to the Wilmington area.

         It is a  critical  function  of a Board to make  sure  that  the  Chief
Executive's  compensation arrangement is designed to closely align his interests
with those of the Company's  shareholders.  Unfortunately,  Joyce's compensation
arrangements at Hercules, which are outlined at pp. 9-10 of this letter, bear no
relationship in our view to overall corporate, individual, or stock performance.
Quite to the contrary,  the worse  Hercules has done for its  shareholders,  the
more lucrative Joyce's compensation appears to have become.

         Finally,  the Hercules Board's sorry record is most starkly illustrated
by its  failure  in our view to  provide  Joyce  with  sufficient  guidance  and
direction in terms of  establishing  the Chief  Executive's  objectives and then
holding him  accountable  for meeting them. In fact, the objectives set forth by
the Board's  Compensation  Committee  were limited  almost  exclusively  to cost
reduction and other  measurements  directly related thereto.  By way of just one
example,  management  of  the  Company's  two  principal  non-operating  issues,
Hercules'  pension and asbestos  exposures,  which resulted last year in pre-tax
charges  to  earnings  of more than $600  million,  were not even  mentioned  in
Joyce's 2002 management objectives.

         As further evidence of the Board's failure, aside from reductions to an
obviously  bloated  cost  structure,  we have  seen  no  evidence  of any  focus
whatsoever on a turnaround strategy, long-range or short-term growth strategies,
upgrading of the organization,  attracting outstanding people to the Company, or
the hundreds of other matters so basic to the operation of a large  corporation.
Even  Joyce  acknowledged  in a  quarterly  earnings  call  last  year  that his
management  focus has been almost  entirely on cost  reduction.  This short-term
strategy presumably led Leslie Ravitz, a chemicals analyst at Morgan Stanley, to
question Hercules'  long-term  prospects  (November 2,

---------
(11) The $14.25 million estimate is based on a 20 year life expectancy.

                                       12



2001) and continues to be illustrated by Joyce's sharp cuts in both research and
development and capital expenditures.

         With regard to the Company's capital programs,  for example,  under the
current Hercules Board and management,  capital  expenditures  have been reduced
from $119  million in 2000 to $49 million in 2001 and $43  million in  2002.(12)
Hercules'  capital  spending  last year  approximated  only 60% of the Company's
depreciation  expense of $71  million.  This  prompted  Andrew  Cash, a security
analyst at UBS Warburg, to recently observe,  after predicting that 2003 will be
the third  consecutive  year in which  capital  spending is below  depreciation,
"Although we applaud  management's  frugality,  investors  need to be aware that
capital spending cannot remain this low into perpetuity,  i.e.,  equipment ages,
new capital must be invested  into the business to allow for growth,  etc." (May
2, 2003).

         To add insult to injury,  in February  of this year,  after the Company
had  posted a loss of $248  million  (excluding  a $368  million  write-down  of
goodwill) for the 2002 year, and Hercules  shareholders lost  approximately $400
million in the market value of their  investments  during the previous year, the
Hercules Board, over the objection of the minority directors, awarded bonuses to
135 senior executives in the amount of almost $10 million  (representing 193% of
their  targeted  bonuses) -  including  a $1.9  million  bonus for  Joyce.  This
followed action by the Hercules Board in the previous year,  notwithstanding the
Company's  $58 million loss in 2001,  awarding,  again over the objection of the
minority  directors,  bonuses  to 214 senior  executives  of almost $9 million -
including a $1 million bonus to Joyce for his seven months on the job in 2001.

             HERCULES' $570 MILLION PENSION FIASCO - WITH ALMOST NO
                     ADVANCE WARNING TO COMPANY SHAREHOLDERS

         Over the last  three  years,  including  almost  two full  years  under
Joyce's management, Hercules pension plans, in addition to their failure to earn
their minimum  investment  hurdle rate, have in fact lost more than $250 million
as a result of negative  investment  returns.  This  enormous  loss required the
Company  earlier  this  year to take a pre-tax  charge to equity of almost  $570
million,  which has now  resulted  in a negative  equity for the Company of $123
million.  Compounding the problem is the fact that Hercules management failed in
our opinion to provide Company shareholders with full, informative, transparent,
and timely disclosure  concerning the Company's pension losses and their serious
ramifications  until late last year.  You should know that  Hercules  management
failed  to fully  inform  even the  Company's  Board of this  situation  and its
ramifications until after the fact.

         Based  upon what we  believe  to be the  Company's  unrealistic  8-3/4%
investment  assumption,  in order to  maintain  compliance  with  minimum  ERISA
funding requirements,  it is estimated that the loss will require the Company to
make cash  contributions  of almost  $500  million  (including  payments  of $97
million  made  last  year)  over the next 10  years.  Pension  expenses  are now
projected  to  adversely  impact  earnings  for the time period by an  estimated
average annual, after-tax, amount of $0.46 per share as follows:

----------
(12) The above-mentioned expenditures are adjusted to exclude all divested
businesses.

                                       13



             PRETAX PENSION COST (INCLUDING HEALTH CARE EXPENSE)(13)

                          2003           $48 million
                          2004            69 million
                          2005            92 million
                          2006            94 million
                          2007            92 million
                          2008            89 million
                          2009            84 million
                          2010            82 million
                          2011            81 million
                          2012            82 million


         Illustrative of how sensitive these estimates are to future  investment
performance,  if, for example,  one were to assume a 6% average annual return on
pension assets,  total cash contributions for the next 10 years are estimated to
be  approximately  $700 million  (including the $97 million paid last year), and
pension  expenses would be  approximately  $30 million per annum higher than the
schedule of pension costs referred to above - thereby adversely impacting annual
earnings on average by an estimated $0.63 per share, after tax.

         While other  Companies  to be sure have been plagued in recent years by
investment  underperformance  in their pension  plans,  the  seriousness  of the
Hercules situation was underscored in a recent Credit Suisse First Boston report
(David Zion, April 14, 2003), which estimates that of 361 S&P 500 companies with
defined benefit pension plans, Hercules' underfunded status ranks it in the 16th
worst  position when compared to its equity  market  capitalization.  The report
concluded that Hercules' total pension obligations  represent 159% of its market
capitalization,  ranking  it the  20th  highest  of the  361  companies  in that
category.  In addition,  an earlier Credit Suisse First Boston report (September
27,  2002)  predicted  that  Hercules may very well be required to incur the 5th
largest  after tax charge as a  percentage  of equity in the  fourth  quarter of
2002.(14)

         Hercules'  pension  performance has been in no small measure the result
of management's  asset allocation  decision to invest  approximately  70% of its
pension assets in equities, including almost 30% of that amount in international
equities.  Interestingly  enough,  Hercules'  investment  policy  has  allocated
nothing to  alternative  assets,  hedge  funds,  or so-called  "market  neutral"
investments,  which tend to focus on delivering consistent absolute returns with
low  correlation  to the U.S.  stock  market or other  asset  classes.  WHEN ONE
CONSIDERS THE SIZE OF THE  COMPANY'S  PENSION  ASSETS  COMPARED WITH THE SIZE OF
HERCULES,  THE FACT THAT THE COMPANY'S PENSION LIABILITIES ARE ESSENTIALLY FIXED
AND RELATIVELY  MATURE INASMUCH AS RETIREES AND INACTIVES  OUTNUMBER  ACTIVES IN
THE PLAN BY A 10-TO-1 RATIO,  HERCULES' ASSET ALLOCATION  POLICY HAS BEEN IN OUR
OPINION WHOLLY INAPPROPRIATE AND UNDULY RISKY.

         You should  know the  Hercules  pension  plan has been  largely  run on
autopilot for the last 10 years.  Despite the  importance of the pension  plan's
performance to the overall

---------
(13) Hercules employs multi-year smoothing of asset returns, as do many other
companies, which operates to defer the full effect of the Company's pension
losses in the last several years to 2005 and beyond.

(14) The size of Hercules' fourth quarter charge has now materialized almost as
predicted, but whether this charge amounts to the fifth largest cannot be easily
ascertained.

                                       14



financial  performance of the Company as a result of the size of the plan, there
is in our view no one at Hercules that has demonstrated the slightest  expertise
in this area.  What is more,  during  Joyce's  tenure,  until this issue reached
crisis  proportions,  neither  the  Board  nor its  Finance  Committee  had ever
conducted  a  meaningful  review of  management's  investment  decisions.  While
companies  normally  make pension  asset  allocation  decisions on as often as a
quarterly  or at  least  annual  basis,  Hercules,  seemingly  oblivious  to the
vicissitudes  of the  investment  climate  over the last 10  years,  had made no
significant  change to its investment  policy during this entire period of time,
including the last two years under Joyce.  At the very least,  this  underscores
the Company's need for a CFO, which we urged upon Joyce and the Board almost two
years ago.

               HERCULES HAS DISREGARDED IN OUR VIEW THE INTERESTS
                    OF ITS SHAREHOLDERS BY PACKING THE BOARD
                   WITH FIVE HANDPICKED DIRECTORS AND ERECTING
                      A FORTRESS OF ANTI-TAKEOVER DEFENSES

         In  addition  to  packing  the Board  with five  handpicked  directors,
Hercules has erected  over time an arsenal of  anti-takeover  provisions,  which
include a poison pill,  staggered  board,  interpretation  of a Company Bylaw to
require an affirmative vote of a majority of ALL OUTSTANDING SHARES for election
of directors,  "blank  check"  preferred  stock,  an 80% super  majority  voting
requirement to amend certain Bylaws and charter  provisions and approve  certain
merger  transactions,  and the  ability  to add  directors  without  shareholder
approval.  Moreover,  the  Company  has made  flagrant  use of these  devices to
undermine the interests of Hercules shareholders - making Hercules in our view a
"walking corporate governance nightmare."

(1)      JOYCE  PACKS THE BOARD WITH FIVE  HANDPICKED  DIRECTORS,  CONTINUING  A
         HERCULES "YOU SCRATCH MY BACK, I'LL SCRATCH YOURS" TRADITION

         The record  over the years at  Hercules  is replete  with  examples  of
Boards who in our  opinion do very  little to  safeguard  the  interests  of the
Company's shareholders and are virtually always supportive of whatever the Chief
Executive wants,  failed Chief Executives who receive what we view as exorbitant
parachute  payments,  and Board  members  who until  well  after our 2001  proxy
contest were permitted to fund with Company monies million dollar gifts to their
favorite charities.(15)

         Taking  advantage of a charter  provision which permits the addition of
new directors without shareholder approval, no sooner had the votes been counted
in connection with the 2001 proxy contest,  when Joyce, whose own "election" was
not originally  submitted to shareholders  either,  together with the nominating
committee, thumbed their noses at Hercules shareholders by choosing Paula Sneed,
an incumbent  director who had been defeated in that contest for reelection,  to
fill an existing Board opening.  Since that time, Joyce,  acting in concert with
the Board's nominating committee, has handpicked Messrs. Wyatt, Kennedy, Lipton,
and  Hunter  (three of whom are former or current  executives  in the  commodity
chemicals  industry),  to either  replace  departing  directors or fill existing
openings. WE BELIEVE THAT THESE FOUR DIRECTORS HAVE

---------
(15) This last practice was stopped at the insistence of our minority directors
some months after we joined the Board in 2001.

                                       15



ONE COMMON  QUALIFICATION  FOR THE JOB - A CLOSE  RELATIONSHIP  WITH  JOYCE.  IT
SHOULD NOT SURPRISE YOU THAT NONE OF THE FIVE  HANDPICKED  DIRECTORS  (INCLUDING
PAULA SNEED WHO RESIGNED EARLIER THIS YEAR) HAVE VOTED AGAINST JOYCE'S POSITIONS
ON A SINGLE ISSUE.

         As further  evidence of Joyce's view of shareholder  democracy,  at the
minority directors' first Board meeting in June, 2001, the Nominating  Committee
proposed that seven of the eight then majority incumbent directors each be given
one of two major committee assignments - Audit or Compensation. None of the four
minority   directors   were   proposed  for   membership   on  either  of  these
committees.(16)  When the  minority  members  protested  that they were the only
Hercules  directors  with a real mandate from the Company's  shareholders,  they
were told that this was the way committee  assignments were made at Hercules and
that  Board  members  had,  in words to the  effect,  "to work  their way up" to
qualify for major committee  assignments.  Parenthetically,  Lipton and Kennedy,
who were elected to the Board after the four minority directors,  were appointed
shortly  thereafter to the Audit and  Compensation  Committees - so much for the
Hercules seniority system!

(2)      JOYCE'S  ATTEMPT TO USE HERCULES'  POISON PILL AS A BARGAINING  CHIP TO
         BUY HIS OWN RE-ELECTION

         In October  2000,  in order to increase its  investment in the Company,
ISP proposed a tender offer to all Hercules shareholders, to purchase 25 million
additional  shares of  Hercules  stock for  $17.50  per share in cash.  However,
because of the Company's poison pill, its offer required Board consent.  Despite
repeated requests that Hercules permit it to proceed, the Board refused to do so
- thereby costing Hercules shareholders more than $190 million.

         You should know that the Hercules  poison pill,  with its unusually low
10% trigger point,  was adopted in August,  2000,  less than two weeks after ISP
publicly reported  acquiring 9.9% of Hercules shares,  notwithstanding  the fact
that  Hercules  shareholders  in the past had voiced  strong  opposition  to the
poison   pill.(17)  In  1991,  a  non-binding   proposal  to  redeem   Hercules'
then-existing  poison pill, or submit it to a shareholder  vote, was approved by
shareholders.  Despite this earlier shareholder vote, the Hercules Board refused
to seek shareholder approval for the current pill adopted in 2000.

         In August 2001,  after the election of the four  minority  directors to
the Hercules Board,  we proposed that the Board amend the Company's  poison pill
to revise its trigger point from 10% to 20% -- and then later offered to further
compromise at 15%. In addition,  in response to Hercules'  stated  concern,  ISP
offered a  standstill  agreement,  which  would  prevent it from ever  acquiring
control of Hercules.  After Joyce indicated that he would only consider a change
in the threshold  should ISP agree not to contest the  reelection of himself and
his fellow  majority  directors  at the 2002 Annual  Meeting,  which ISP was not
willing to do for obvious  reasons,  our proposal was defeated by a vote of 7-6.
YOU SHOULD  KNOW THAT JOYCE CAST THE  DECIDING  VOTE  AGAINST THE  PROPOSAL  AND
REPORTED TO THE BOARD HIS INTENTION AT THE SAME TIME TO SOLICIT  OTHER  HERCULES
SHAREHOLDERS  WITH  THE  SAME  PROPOSITION  -  NAMELY,  THAT HE  WOULD  CONSIDER

---------
(16) At a later time, one of our minority directors received major committee
assignments, although the three other minority directors still have not.

(17) According to an Investor Responsibility Research Center study of more than
2,000 companies with poison pills, only 6% have trigger points as low as 10%.

                                       16



SUPPORTING  CHANGES TO THE POISON PILL ONLY IN RETURN FOR  ASSURANCES OF SUPPORT
IN CONNECTION WITH HIS CANDIDACY FOR ELECTION AT THE 2002 ANNUAL MEETING!

         WHAT DO YOU  THINK OF A CHIEF  EXECUTIVE  WHO IS  WILLING  TO RESORT TO
BLATANTLY  INAPPROPRIATE  DEMANDS SO AS TO ENTRENCH  HIMSELF AND HIS  HANDPICKED
DIRECTORS IN OFFICE?

         ASK  YOURSELF  WHETHER THE POISON PILL DEVICE IS IN YOUR BEST  INTEREST
AND WHETHER  YOU NEED TO BE  "PROTECTED"  FROM MAKING YOUR OWN  DECISION TO SELL
YOUR SHARES. WE BELIEVE THAT IT IS PARAMOUNT THAT YOU HAVE THE RIGHT TO CONSIDER
FOR YOURSELF THE MERITS OF OFFERS FOR YOUR SHARES.  OUR NOMINEES  WILL  ADVOCATE
THAT THE BOARD  REMOVE,  OR  SUBSTANTIALLY  REVISE,  BARRIERS TO OFFERS FOR YOUR
SHARES SO THAT YOU CAN MAKE YOUR OWN DECISIONS.

(3)      JOYCE AND THE  HERCULES  BOARD  REFUSE TO NULLIFY A COMPANY  BYLAW THAT
         DISENFRANCHISES ITS SHAREHOLDERS

         The disregard of Joyce and the Hercules  Board for the interests of the
Company's shareholders is dramatically  demonstrated by their refusal to rescind
a Hercules election Bylaw which the Board claims requires an affirmative vote of
the  holders  of a  majority  of ALL  OUTSTANDING  SHARES  for the  election  of
directors,  instead of the greatest  number of votes  actually cast at an Annual
Meeting (a plurality  vote).  This means,  for example,  that if each  Committee
nominee receives 50 million votes and each incumbent  director  receives only 10
million votes,  the incumbents would retain their seats on the Board because the
Committee  nominees would not have received a majority vote of approximately 108
million outstanding shares of Hercules common stock.

         This voting requirement disenfranchises shareholders, is highly unusual
if not unique,  and is in our view inconsistent with good corporate  governance.
In fact, we are unaware of a single other Delaware  public company that has such
a provision  with  regard to  election of  directors.  The  Hercules  Bylaw,  as
interpreted  by the  Company,  serves in our view as a mechanism to entrench the
current Board, because if no nominee receives a majority vote of the outstanding
shares,  the incumbent  directors would remain in place beyond their  three-year
term, even if our nominees received a plurality vote.

         As early as 2001,  after  calling to Hercules'  attention  this obvious
inequity  and  requesting  that it take the  necessary  action  to  remedy  this
situation in connection with the 2001 Annual Meeting, the Hercules Board refused
to do so. As it turned out, three of the four minority directors were elected at
the 2001 Annual Meeting by more than 50% of the outstanding shares, and Hercules
agreed to seat the fourth minority director, who had won by a plurality of those
voting,  in order to avoid a court test.  After joining the Board,  the minority
directors  again  proposed  that Joyce and the  Hercules  Board  take  action to
effectively nullify the Bylaw, but they have refused to do so.

         You should  know that in a DELAWARE  NEWS  JOURNAL  article  (March 14,
2001),  entitled  "Hercules'  Election  Method Is Fought",  the Hercules  voting
requirement  prompted the following  comments from a Wall Street analyst as well
as a corporate  governance expert: Gary Hindes,  Managing Director of New York's
Deltec Asset Management  stated that,  "These people  [referring to the Hercules
directors] have managed to destroy what was a wonderful company," and is further
reported to have stated that Hercules  should be asking for the  resignation  of
its directors, not supporting

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them for  re-election;  and Charles Elson,  Director of the Center for Corporate
Governance  at  the  University  of  Delaware,  characterized  Hercules'  voting
provision as "highly unusual" and further stated,  "In all my years [of tracking
corporate policies], I have not seen that with the election of a board."

*        *        *        *        *       *        *        *        *       *

THE COMMITTEE'S PROGRAM TO REALIZE HERCULES' UNDERLYING VALUES

         The   Committee   believes   that  there  is  presently  a  substantial
discrepancy  between the underlying  value of Hercules  shares and their current
market  price.  We are  convinced  that  there are strong  underlying  values at
Hercules and that the Company's two remaining,  primary businesses, the pulp and
paper and Aqualon  businesses,  have substantial  potential for growth under the
right  direction.  As major  shareholders,  we are  determined  to maximize  our
Company's underlying values for all Hercules shareholders.

         To this end, we would pursue the following program:

         (1)   Conduct a thorough search for a new, highly qualified, full-time,
               "roll  up  your  sleeves"  Chief   Executive   committed  to  the
               turnaround  of the Company's  businesses,  who will reside in the
               Wilmington  area  and  whose  compensation  will be  designed  to
               closely  align  his or  her  interests  with  those  of  Hercules
               shareholders.  By making  the right  selection  and  establishing
               comprehensive  goals  and  objectives,  we  intend  to avoid  the
               extraordinarily  harmful turnover of Chief Executives at Hercules
               over the last six years.

         (2)   Rebuild management ranks which have been allowed to atrophy under
               the  current  Chief  Executive  and his  predecessors.  This will
               include the election of a first rate Chief Financial  Officer,  a
               position which Joyce and the Board have  inexplicably  refused to
               fill during his two-year  term at the Company  despite  Hercules'
               myriad financial challenges.(18)

         (3)   Eliminate excessive compensation and bonuses as have been enjoyed
               by Joyce and other  Company  executives  and make certain that in
               the future  compensation  arrangements  at Hercules  provide that
               executive salaries,  bonuses,  and benefits be closely related to
               overall corporate,  individual,  and stock  performance.  In this
               regard, it is our view that an effective  belt-tightening program
               must start at the top, and that the kind of compensation  enjoyed
               by Joyce is not only  unwarranted  in and of  itself,  but serves
               also to stiffen the resistance of others at Hercules to the kinds
               of cost-cutting measures which may be necessary.

---------
(18) Parenthetically, of what we believe to be the Company's failures under
Joyce's management, a number of them have come in areas normally the
responsibility of a Company's Chief Financial Officer. In addition to the
pension fiasco referred to earlier and the fact that the Company has failed to
file its periodic, public financial reports (including its certification last
August under the Sarbanes-Oxley Act of 2002) in a timely fashion on four
separate occasions since January 2001, Hercules has paid, in 2001 and 2002, what
we believe to be an astounding $19 million and $21 million, respectively, in
fees to the Company's auditors. The sum paid by Hercules last year, for example,
was nearly 8 times the average expense for the eight companies in the S&P MidCap
Specialty Chemicals Index. In fact, we believe that the only chemicals company
that paid more to its auditors than Hercules last year was DuPont, which is more
than ten times the size of Hercules.

                                       18



         (4)   As Hercules  Board  members for the last two years,  the minority
               directors have identified significant, additional cost reductions
               involving the elimination  alone of excessive  audit,  insurance,
               legal, Board, corporate  headquarters,  perks, bonus, and benefit
               expenses,  which we estimate  will save the Company more than $50
               million per annum(19). In addition, while Joyce's cost  reduction
               efforts have largely been limited to the administrative  area, we
               would  focus   additional   efforts  on  the   largely   untapped
               manufacturing area.

         (5)   Despite the axiom that  businesses  cannot "cost cut their way to
               prosperity" and that successful  turnaround  strategies can never
               rely   on   cost-reduction   alone,    management's    overriding
               preoccupation,  as acknowledged by Joyce, has unfortunately  been
               on cost reduction alone. But dynamic  leadership isn't just about
               cutting costs or staying afloat.  In addition to  cost-reduction,
               we would focus Hercules on new products,  acquisitions,  expanded
               field technical services,  new alliances with other manufacturers
               to add  complementary  products,  and a rational pricing strategy
               which  places a high  priority  on  profitability  rather than on
               small  market  share  gains.

         (6)   We  believe   that   incumbent   management   has   neither   the
               qualifications  nor the  expertise to address the  Company's  two
               principal  non-operating issues - the minimization of its pension
               and asbestos exposures.  While current management in our view has
               given these  critical  issues  short  shrift,  we would focus the
               attention  of senior  management,  assisted  by the best  outside
               professionals, on these areas.

*        *        *        *        *       *        *        *        *       *

         Since the Hercules Shareholders'  Committee for NEW Management prepared
the enclosed letter and Proxy Statement,  you may have received Joyce's May 19th
letter, which is filled with personal invective and baseless, unsubstantiated ad
hominem attacks.  Given what we believe to be Joyce's disastrous  performance at
Hercules  over the last two years,  it is not  surprising  that he would seek to
divert  shareholders'  attention  from the real  issues at hand.  Our focus will
instead  continue  to be on the future  direction  of our  Company and the FACTS
concerning Joyce's  stewardship at Hercules,  which are fully documented in this
letter and enclosed Proxy Statement.

*        *        *        *        *       *        *        *        *       *

         In your own best  interest,  we ask you to  support  our  nominees  for
election as directors of Hercules. If you agree with us that NOW IS THE TIME FOR
A CHANGE AT HERCULES - please sign,  date and mail the  Committee's  WHITE Proxy
Card - today.

---------
(19) With regard to benefit  programs,  the directors are in agreement  that the
Company's pension  obligations to retirees and pension benefits for actives must
be preserved and safeguarded. The Company's directors have unanimously approved,
however,  cost  reductions  in health and medical  programs in keeping with what
hundreds of other companies in Corporate America have already done.

                                       19



         Thank  you  for  your   support,   and  we  look   forward  to  further
communications   (hopefully   shorter!)   with  you   concerning   our  Hercules
investments.

                                   Sincerely,

             THE HERCULES SHAREHOLDERS' COMMITTEE FOR NEW MANAGEMENT



                                                          
/s/ Samuel J. Heyman   /s/ Harry Fields    /s/ Anthony T. Kronman  /s/ Sunil Kumar
--------------------   -----------------   ----------------------  -------------------
Samuel J. Heyman       Harry Fields        Anthony T. Kronman      Sunil Kumar


/s/ Gloria Schaffer   /s/ Vincent Tese   /s/ Raymond S. Troubh    /s/ Gerald Tsai, Jr.
-------------------   ----------------   ----------------------   --------------------
Gloria Schaffer       Vincent Tese       Raymond S. Troubh        Gerald Tsai, Jr.



               If you have questions or need assistance in voting
                            your shares, please call:

                      [GEORGESON SHAREHOLDER LOGO OMITTED]

                           17 State Street, 10th Floor
                               New York, NY 10004
                           (866) 288-2990 (Toll Free)

                     Banks and Brokerage Firms please call:
                                 (212) 440-9800

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