DYNAMICS CORP OF AMERICA
SC 14D1/A, 1997-04-10
ELECTRIC HOUSEWARES & FANS
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                         -------------------------------
                                 SCHEDULE 14D-1
              TENDER OFFER STATEMENT (AMENDMENT NO. 2) PURSUANT TO
             SECTION 14(D)(1) OF THE SECURITIES EXCHANGE ACT OF 1934
                         -------------------------------
                         DYNAMICS CORPORATION OF AMERICA
                            (Name of Subject Company)

                                 WHX CORPORATION
                              SB ACQUISITION CORP.
                                    (Bidders)

                     COMMON STOCK, PAR VALUE $.10 PER SHARE
             (INCLUDING THE ASSOCIATED COMMON STOCK PURCHASE RIGHTS)
                         (Title of Class of Securities)

                                   268039 10 4
                      (CUSIP Number of Class of Securities)

                                MR. RONALD LABOW
                              CHAIRMAN OF THE BOARD
                                 WHX CORPORATION
                              110 EAST 59TH STREET
                               NEW YORK, NY 10022
                            TELEPHONE: (212) 355-5200

            (Name, Address and Telephone Number of Person Authorized
           to Receive Notices and Communications on Behalf of Bidder)
                                 with a copy to:

                               ILAN K. REICH, ESQ.
                     OLSHAN GRUNDMAN FROME & ROSENZWEIG LLP
                                 505 PARK AVENUE
                            NEW YORK, NEW YORK 10022
                            TELEPHONE: (212) 753-7200
                         -------------------------------
                            CALCULATION OF FILING FEE
- --------------------------------------------------------------------------------
TRANSACTION VALUATION*                                   AMOUNT OF FILING FEE**
  $29,205,000.00                                              $5,841.00
- --------------------------------------------------------------------------------

*        For  purposes  of  calculating  the filing fee only.  This  calculation
         assumes the purchase of up to 649,000 shares of Common Stock, par value
         $.10 per share (the  "Shares") of Dynamics  Corporation of America (the
         "Company")  at a price of $45 per  Share,  net to the  seller  in cash,
         without interest thereon.

**       The  amount of the  filing  fee,  calculated  in  accordance  with Rule
         0-11(d) of the  Securities  Exchange  Act of 1934,  as amended,  equals
         1/50th of one  percent  of the  aggregate  value of cash  offered by SB
         Acquisition Corp. for such number of Shares.

[ ]*     Check  box if any  part  of the  fee is  offset  as  provided  by  Rule
         0-11(a)(2)  and identify the filing with which the  offsetting  fee was
         previously paid. Identify the previous filing by registration statement
         number, or the form or schedule and the date of its filing.

Amount Previously Paid:             5,192.00
Form or Registration No.:           Schedule 14A
Filing Party:                       WHX Corporation
                                    SB Acquisition Corp.
Date Filed:                         March 31, 1997
<PAGE>
         This Statement  amends and  supplements  the Tender Offer  Statement on
Schedule 14D-1 filed with the  Securities  and Exchange  Commission on March 31,
1997 by SB Acquisition Corp. ("Purchaser"),  a New York corporation and a wholly
owned  subsidiary of WHX  Corporation,  a Delaware  corporation  ("Parent"),  to
purchase  up to 649,000  shares of Common  Stock,  par value $.10 per share (the
"Shares") of the Company,  including the associated Common Stock Purchase Rights
issued  pursuant  to the Rights  Agreement,  dated as of January  30,  1986,  as
amended on December 27, 1995 (the "Rights  Agreement"),  between the Company and
First National Bank of Boston, as Rights Agent, at a price of $45 per Share, net
to the seller in cash,  without interest thereon,  upon the terms and subject to
the  conditions  set forth in the Offer to  Purchase,  dated March 31, 1997 (the
"Offer to Purchase"),  as amended and  supplemented  by the Supplement  thereto,
dated  April  10,  1997  (the  "Supplement")  and  in  the  related  Letters  of
Transmittal  (which,  together  with  any  amendments  or  supplements  thereto,
constitute  the "Offer").  Capitalized  terms used and not defined  herein shall
have  the  meanings  assigned  to such  terms  in the  Offer  to  Purchase,  the
Supplement and the Schedule 14D-1.

ITEM 1.  SECURITY AND SUBJECT COMPANY.

         Item  1(b) is hereby  amended  and  supplemented  by  reference  to the
Introduction and Section 1 of the Supplement, which Introduction and Section are
incorporated herein by reference.

ITEM 3.  PAST CONTACTS, TRANSACTIONS OR NEGOTIATIONS WITH THE SUBJECT COMPANY.

         Item 3(b) is hereby amended and  supplemented by reference to Section 5
of the Supplement, which Section is incorporated herein by reference.

ITEM 4.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         Item 4(a) is hereby amended and  supplemented by reference to Section 4
of the Supplement, which Section is incorporated herein by reference.

ITEM 10. ADDITIONAL INFORMATION

         Item 10(b)-(c),  (e) is hereby amended and supplemented by reference to
Section 7 of the Supplement, which Section is incorporated herein by reference.

ITEM 11. MATERIAL TO BE FILED AS EXHIBITS.

         (a)      (1)      Offer to Purchase, dated March 31, 1997.*
                  (2)      Letter of Transmittal.*
                  (3)      Notice of Guaranteed Delivery.*
                  (4)      Letter to Brokers,  Dealers,  Commercial Banks, Trust
                           Companies and Other Nominees.*
                  (5)      Letter  to  Clients  for  use  by  Brokers,  Dealers,
                           Commercial   Banks,   Trust   Companies   and   Other
                           Nominees.*
                  (6)      Guidelines    for     Certification    of    Taxpayer
                           Identification Number on Substitute Form W-9.*
                  (7)      Text of Press Release  issued by WHX  Corporation  on
                           March 31, 1997.*
                  (8)      Summary Advertisement published on April 1, 1997.*
                  (9)      Text of Press  Release,  issued by Parent on April 9,
                           1997.*
                  (10)     Supplement  to Offer to  Purchase,  dated  April  10,
                           1997.
                  (11)     Revised Letter of Transmittal
                  (12)     Revised Letter to Brokers, Dealers, Commercial Banks,
                           Trust Companies and Other Nominees.
                  (13)     Revised   Letter  to  Clients  for  use  by  Brokers,
                           Dealers,  Commercial Banks, Trust Companies and Other
                           Nominees.


         (b)      Not applicable.

         (c)      Not applicable.

- --------
    *   Previously provided.


                                       -2-
<PAGE>
         (d)      Not applicable.

         (e)      Not applicable.

         (f)      Not applicable.


                                       -3-
<PAGE>
                                    SIGNATURE


         After due inquiry  and to the best of its  knowledge  and  belief,  the
undersigned  certifies that the information set forth in this statement is true,
complete and correct.

Dated:  April 10, 1997

                                           WHX CORPORATION



                                           By:/S/ STEWART E. TABIN
                                              --------------------
                                              Name:   Stewart E. Tabin
                                              Title:  Assistant Treasurer



                                           SB ACQUISITION CORP.


                                           By: /S/ STEWART E. TABIN
                                               --------------------
                                               Name:   Stewart E. Tabin
                                               Title:  Vice President


                                       -4-
<PAGE>
                                  EXHIBIT INDEX



EXHIBIT
NUMBER                                                                      PAGE
- --------------------------------------------------------------------------------

         (a)      (1)      Offer to Purchase, dated March 31, 1997.*
                  (2)      Letter of Transmittal.*
                  (3)      Notice of Guaranteed Delivery.*
                  (4)      Letter to Brokers,  Dealers,  Commercial Banks, Trust
                           Companies and Other Nominees.*
                  (5)      Letter  to  Clients  for  use  by  Brokers,  Dealers,
                           Commercial   Banks,   Trust   Companies   and   Other
                           Nominees.*
                  (6)      Guidelines    for     Certification    of    Taxpayer
                           Identification Number on Substitute Form W-9.*
                  (7)      Text of Press Release  issued by WHX  Corporation  on
                           March 31, 1997.*
                  (8)      Summary Advertisement published on April 1, 1997.*
                  (9)      Text of Press  Release,  issued by Parent on April 9,
                           1997.*
                  (10)     Supplement  to Offer to  Purchase,  dated  April  10,
                           1997.
                  (11)     Revised Letter of Transmittal
                  (12)     Revised Letter to Brokers, Dealers, Commercial Banks,
                           Trust Companies and Other Nominees.
                  (13)     Revised   Letter  to  Clients  for  use  by  Brokers,
                           Dealers,  Commercial Banks, Trust Companies and Other
                           Nominees.


         (b)      Not applicable.

         (c)      Not applicable.

         (d)      Not applicable.

         (e)      Not applicable.

         (f)      Not applicable.

- --------
    *   Previously provided.


                                       -5-

                                                                 EXHIBIT (A)(10)


            SUPPLEMENT TO THE OFFER TO PURCHASE DATED MARCH 31, 1997

                              SB ACQUISITION CORP.

                          A WHOLLY OWNED SUBSIDIARY OF

                                 WHX CORPORATION

               OFFERS TO PURCHASE FOR CASH UP TO 649,000 SHARES OF

                COMMON STOCK (INCLUDING THE ASSOCIATED RIGHTS) OF

                         DYNAMICS CORPORATION OF AMERICA

                     AT AN INCREASED PRICE OF $45 PER SHARE



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

THE OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT,
NEW YORK CITY TIME,  ON TUESDAY,  APRIL 29, 1997,  UNLESS THE OFFER IS EXTENDED.
THE OFFER IS NOT SUBJECT TO ANY MINIMUM NUMBER OF SHARES BEING TENDERED.

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

THE OFFER IS CONDITIONED  UPON, AMONG OTHER THINGS,  (1) ANY APPLICABLE  WAITING
PERIOD  UNDER  THE  HART-SCOTT-RODINO  ANTITRUST  IMPROVEMENTS  ACT OF 1976,  AS
AMENDED  (THE "HSR ACT"),  SHALL HAVE  EXPIRED OR BEEN  TERMINATED  PRIOR TO THE
EXPIRATION  OF THE OFFER,  AND (2) THE COMPANY  (AS  DEFINED  HEREIN) NOT HAVING
ENTERED INTO OR EFFECTUATED  ANY AGREEMENTS WITH ANY PERSON OR ENTITY HAVING THE
EFFECT OF  IMPAIRING  PURCHASER'S  (AS  DEFINED  HEREIN)  ABILITY TO ACQUIRE THE
COMPANY OR OTHERWISE DIMINISHING THE EXPECTED ECONOMIC VALUE TO PURCHASER OF THE
ACQUISITION OF THE COMPANY. SEE SECTION 13 OF THE OFFER TO PURCHASE.

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

                                    IMPORTANT

         Any  shareholder  desiring  to  tender  all  or  any  portion  of  such
shareholder's Shares (as defined herein) should either (i) complete and sign the
Letter  of  Transmittal  (or  a  facsimile   thereof)  in  accordance  with  the
instructions in the Letter of  Transmittal,  have such  shareholder's  signature
thereon  guaranteed if required by  Instruction 1 to the Letter of  Transmittal,
mail or deliver the Letter of Transmittal  (or such  facsimile  thereof) and any
other required  documents to the Depositary and either deliver the  certificates
for such Shares to the  Depositary  along with the Letter of  Transmittal  (or a
facsimile  thereof)  or  deliver  such  Shares  pursuant  to the  procedure  for
book-entry  transfer set forth in Section 3 prior to the expiration of the Offer
or (ii)  request such  shareholder's  broker,  dealer,  commercial  bank,  trust
company or other nominee to effect the transaction for such shareholder.

         A shareholder having Shares registered in the name of a broker, dealer,
commercial  bank,  trust  company or other  nominee  must  contact  such broker,
dealer,  commercial  bank,  trust company or other  nominee if such  shareholder
desires to tender such Shares.

         Questions and requests for assistance or for additional  copies of this
Offer to Purchase,  this Supplement,  the revised Letter of Transmittal or other
tender offer  materials,  may be directed to the  Information  Agent (as defined
herein) at its address and telephone  number set forth on the back cover of this
Supplement.

April 10, 1997


<PAGE>
TO THE HOLDERS OF COMMON STOCK OF DYNAMICS CORPORATION AMERICA:

                                  INTRODUCTION

         The following  information amends and supplements the Offer to Purchase
dated March 31, 1997 (the "Offer to Purchase") of SB  Acquisition  Corp.,  a New
York corporation ("Purchaser") and a wholly owned subsidiary of WHX Corporation,
a Delaware corporation ("Parent"). Pursuant to this Supplement, Purchaser is now
offering to purchase up to 649,000  shares of common  stock,  par value $.10 per
share (the "Shares") of Dynamics  Corporation of America, a New York corporation
(the  "Company"),  including the associated  Common Stock  Purchase  Rights (the
"Rights") issued pursuant to the Rights Agreement, dated as of January 30, 1986,
as amended on December 27, 1995,  between the Company and First National Bank of
Boston,  as Rights Agent (the "Rights Agent"),  at a price of $45 per Share, net
to the seller in cash,  without interest  thereon (the "Offer Price"),  upon the
terms and  subject  to the  conditions  set forth in the Offer to  Purchase,  as
amended and  supplemented  by this  Supplement,  and in the  related  Letters of
Transmittal  (which,  as  amended  from time to time,  together  constitute  the
"Offer").

         Except  as  otherwise  set  forth in this  Supplement,  the  terms  and
conditions  previously set forth in the Offer to Purchase  remain  applicable in
all respects to the Offer,  and this  Supplement  should be read in  conjunction
with the Offer to Purchase.  Unless the context  requires  otherwise,  terms not
defined herein have the meanings ascribed to them in the Offer to Purchase.

         According to the Company's  Proxy Statement dated March 26, 1997, as of
March 14, 1997 there were 3,815,194 Shares  outstanding.  The Purchaser  already
owns 109,861 Shares  (approximately  2.9%). This includes 261 Shares received in
the  mid-1970s by other  subsidiaries  of Parent (and  recently  transferred  to
Purchaser) in connection with the settlement of various creditor claims.

         Procedures for tendering Shares are set forth in Section 3 of the Offer
to Purchase.  Tendering  shareholders may use either the original (white) Letter
of Transmittal  previously  circulated with the Offer to Purchase or the revised
(white)  Letter  of  Transmittal  circulated  with  this  Supplement.  TENDERING
SHAREHOLDERS  MAY NOT USE THE  ORIGINAL  (GRAY)  NOTICE OF  GUARANTEED  DELIVERY
PREVIOUSLY  CIRCULATED WITH THE OFFER TO PURCHASE.  While the original Letter of
Transmittal  circulated  with  the  Offer to  Purchase  refers  to the  Offer to
Purchase,  and the Letter of Transmittal  circulated with this Supplement refers
to the Offer to Purchase and this Supplement,  shareholders using such documents
to tender Shares will nevertheless  receive $45 per Share for each Share validly
tendered and not withdrawn and accepted for payment  pursuant to the Offer,  are
not required to take any further action in order to receive the increased tender
price of $45 per Share,  assuming  that Shares are accepted for payment and paid
for by Purchaser  pursuant to the Offer.  See Section 3 of the Offer to Purchase
and Section 1 of this Supplement.

         THIS OFFER TO PURCHASE, THIS SUPPLEMENT AND THE LETTER OF TRANSMITTAL
CONTAIN IMPORTANT INFORMATION WHICH SHOULD BE READ CAREFULLY BEFORE ANY
DECISION IS MADE WITH RESPECT TO THE OFFER.

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

         1.       AMENDED TERMS OF THE OFFER; PRORATION.

         The  discussion  set forth in  Section 1 of the  Offer to  Purchase  is
hereby amended and supplemented as follows:

         The Offer is being made for up to 649,000  Shares.  The price per Share
to be paid  pursuant to the Offer has been  increased  from $40 per Share to $45
per Share, net to the seller in cash,  without interest thereon.  Purchaser will
accept for payment and pay for up to 649,000  Shares which are validly  tendered
prior to the  Expiration  Date and not  properly  withdrawn in  accordance  with
Section  4, and all such  Shares  accepted  for  payment  pursuant  to the Offer
(including  Shares  delivered  for tender prior to the date of this  Supplement)
will receive the increased price. As of the date of this Supplement,  there were
no Shares tendered to the Depositary.

         This  Supplement,  the revised  (white) Letter of Transmittal and other
relevant materials will be mailed to record holders of Shares whose names appear
on the Company's shareholder list and will be furnished, for
<PAGE>
subsequent  transmittal  to beneficial  owners of Shares,  to brokers,  dealers,
commercial banks,  trust companies and similar persons whose names, or the names
of whose  nominees,  appear on the shareholder  list or, if applicable,  who are
listed as participants in a clearing agency's security position listing.

         All references in the Offer to Purchase to the Record Holder  Condition
are deleted.  The revised Letter of Transmittal  contains a box entitled "Record
Ownership as of March 14, 1997." If the statement therein is applicable, the box
next to such statement should be checked,  and the statement so specified should
be accurate and correct. However, it is not necessary to check that box in order
for Shares to be duly and properly  tendered.  Shareholders who own shares which
were  acquired  both  before and after the March 14,  1997  record  date for the
Company's Annual Meeting (in particular,  brokers, dealers, commercial banks and
other  nominees) are advised to check the box entitled  "Record  Ownership as of
March 14, 1997" and fill in the blank with the number of Shares  being  tendered
which were owned as of March 14, 1997. The failure to follow this procedure will
not,  however,  affect the validity of any tender,  as this is for informational
purposes only.

         If  more  than  649,000  Shares  are  validly  tendered  prior  to  the
Expiration Date and not properly  withdrawn,  Purchaser will, upon the terms and
subject to the  conditions  of the Offer,  accept for  payment  and pay for only
649,000  Shares,  on a pro rata basis,  with  adjustments to avoid  purchases of
fractional Shares, based upon the number of Shares validly tendered prior to the
Expiration  Date and not  properly  withdrawn  in  accordance  with  Section  4.
Purchaser  anticipates  being able to announce the proration  factor on the next
business day following the Expiration  Date.  Purchaser  expressly  reserves the
right, in its sole discretion,  at any time or from time to time, to increase or
decrease  the number of Shares  being  purchased  pursuant  to the Offer and, if
Purchaser in its discretion determines to so increase or decrease such number of
Shares and if such action is required under the rules of the SEC, Purchaser will
extend the Offer in accordance with the SEC's rules.

         Subject  to the  applicable  regulations  of the  SEC,  Purchaser  also
expressly  reserves the right, in its sole discretion,  at any time or from time
to time, to (i) subject to the  conditions of the Offer set forth in Section 13,
decline to purchase any of the Shares  tendered in the Offer and  terminate  the
Offer, and return all tendered Shares to the tendering shareholders,  (ii) waive
or  amend  any or all  conditions  to the  Offer  to  the  extent  permitted  by
applicable law and,  subject to complying with applicable  rules and regulations
of the SEC, purchase all Shares validly tendered, or (iii) extend the Offer and,
subject to the right of  shareholders  to withdraw  Shares until the  Expiration
Date,  retain the Shares which have been  tendered  during the period or periods
for which the Offer is extended.

         The Offer to Purchase contained two erroneous statements: the first was
regarding  the  non-compliance  of the  Record  Holder  Condition  with the "all
holders"  provision  under  Rule  14d-10,  and  the  second  was  regarding  the
non-applicability of the Specified Percentage to Rule 14e-1. In addition,  those
statements  also  included  Purchaser's  view of the SEC Staff's  position  with
respect  to those two rules.  As noted in this  Supplement,  the  Record  Holder
Condition has been deleted,  and the Specified  Percentage has been changed to a
fixed number of Shares (namely,  up to 649,000 Shares).  Furthermore,  Purchaser
erroneously  presented the SEC Staff's position with respect to those two rules.
By sending  this  Supplement  to  shareholders,  Purchaser is seeking to provide
corrective  disclosure;  toward this end, Purchaser acknowledges the SEC Staff's
position that the Record Holder  Condition is not permissible  under Rule 14d-10
and that the Specified Percentage is not permissible under Rule 14e-1.

         2.       ACCEPTANCE FOR PAYMENT AND PAYMENT FOR SHARES.

         The  discussion  set forth in  Section 2 of the  Offer to  Purchase  is
hereby amended and supplemented as follows:

         Upon the terms and subject to the  conditions of the Offer  (including,
if the Offer is  extended  or  amended,  the terms  and  conditions  of any such
extension or amendment),  Purchaser will purchase, by accepting for payment, and
will pay for,  up to 649,000  Shares  which are  validly  tendered  prior to the
Expiration  Date (and not  properly  withdrawn  in  accordance  with  Section 4)
promptly  after  the  later  to occur  of (i) the  Expiration  Date and (ii) the
satisfaction or waiver of the  governmental  regulatory  conditions set forth in
Section 13. Purchaser expressly reserves the right, in its discretion,  to delay
acceptance for payment of, or, subject to applicable  rules of the SEC,  payment
for, Shares in order to comply in whole or in part with any applicable law.



                                       -2-
<PAGE>
         3.       PROCEDURES FOR TENDERING SHARES.

         The  discussion  set forth in  Section 3 of the  Offer to  Purchase  is
hereby amended and restated as follows:

         Valid  Tender of Shares.  In order for  Shares to be  validly  tendered
pursuant  to the  Offer,  the  Letter of  Transmittal  (or  facsimile  thereof),
properly completed and duly executed, with any required signature guarantees, an
Agent's Message (in the case of any book-entry transfer), and any other required
documents,  must be received by the Depositary at one of its addresses set forth
on the back cover of this Offer to Purchase prior to the Expiration Date and the
Share Certificates evidencing tendered Shares must be received by the Depositary
at one of such  addresses or Shares must be tendered  pursuant to the  procedure
for book-entry  transfer  described below and a Book-Entry  Confirmation must be
received by the Depositary, in each case prior to the Expiration Date.

         THE METHOD OF DELIVERY  OF SHARE  CERTIFICATES  AND ALL OTHER  REQUIRED
DOCUMENTS,  INCLUDING DELIVERY THROUGH A BOOK-ENTRY TRANSFER FACILITY, IS AT THE
OPTION AND RISK OF THE  TENDERING  SHAREHOLDER,  AND THE DELIVERY WILL BE DEEMED
MADE ONLY WHEN  ACTUALLY  RECEIVED  BY THE  DEPOSITARY.  IF DELIVERY IS BY MAIL,
REGISTERED MAIL WITH RETURN RECEIPT REQUESTED, PROPERLY INSURED, IS RECOMMENDED.
IN ALL CASES, SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.

         Book-Entry  Transfer.  The  Depositary  will  establish an account with
respect to the Shares at each of the Book-Entry Transfer Facilities for purposes
of the Offer within two business  days after the date of this Offer to Purchase,
and any financial  institution that is a participant in either of the Book-Entry
Transfer  Facilities'  system may make book-entry  delivery of Shares by causing
the Book-Entry  Transfer  Facility to transfer such Shares into the Depositary's
account at a Book-Entry  Transfer  Facility in accordance  with such  Book-Entry
Transfer  Facility's  procedures  for transfer.  However,  although  delivery of
Shares may be effected through  book-entry  transfer at the Book-Entry  Transfer
Facility,  the Letter of Transmittal (or facsimile thereof),  properly completed
and duly executed, with any required signature guarantees and any other required
documents must, in any case, be transmitted to and received by the Depositary at
one of its addresses set forth on the back cover of this Offer to Purchase prior
to the Expiration Date. The confirmation of a book-entry transfer of shares into
the Depositary's account at a Book Entry Transfer Facility as described above is
referred  to  as  a  "Book-Entry  Confirmation."  DELIVERY  OF  DOCUMENTS  TO  A
BOOK-ENTRY  TRANSFER  FACILITY  IN  ACCORDANCE  WITH  SUCH  BOOK-ENTRY  TRANSFER
FACILITY'S PROCEDURES DOES NOT CONSTITUTE DELIVERY TO THE DEPOSITARY.

         Signature  Guarantee.  Signatures on all Letters of Transmittal must be
guaranteed by a firm which is a bank,  broker,  dealer,  credit  union,  savings
association  or other entity that is a member in good standing of the Securities
Transfer Agents Medallion Program (each, an "Eligible Institution"),  unless the
Shares  tendered  thereby are tendered (i) by a registered  holder of Shares who
has not completed either the box entitled "Special Delivery Instructions" or the
box entitled "Special Payment Instructions" on the Letter of Transmittal or (ii)
for the account of an Eligible  Institution.  See Instruction 1 of the Letter of
Transmittal.

         If a Share Certificate is registered in the name of a person other than
the signer of the Letter of Transmittal, or if payment is to be made, or a Share
Certificate  not accepted  for payment or not  tendered is to be returned,  to a
person other than the registered  holder(s),  then the Share Certificate must be
endorsed or  accompanied  by  appropriate  stock  powers,  in either case signed
exactly  as the  name(s)  of  the  registered  holder(s)  appear  on  the  Share
Certificate,  with the  signature(s)  on such Share  Certificate or stock powers
guaranteed  as  described  above.  See  Instructions  1 and 5 of the  Letter  of
Transmittal.

         IN ALL CASES,  SHARES SHALL NOT BE DEEMED  VALIDLY  TENDERED,  UNLESS A
PROPERLY  COMPLETED  AND DULY  EXECUTED  LETTER  OF  TRANSMITTAL  (OR  FACSIMILE
THEREOF) IS RECEIVED BY THE DEPOSITARY.

         Notwithstanding   any  other  provision  hereof,   payment  for  Shares
purchased  pursuant to the Offer will,  in all cases,  be made only after timely
receipt by the Depositary of (i) the Share Certificates  evidencing such Shares,
or a Book-Entry Confirmation of the delivery of such Shares, if available,  (ii)
a properly  completed  and duly  executed  Letter of  Transmittal  (or facsimile
thereof) and (iii) any other documents required by the Letter of Transmittal.



                                       -3-
<PAGE>
         Guaranteed Delivery. No tenders pursuant to guaranteed delivery will be
accepted,  and the section  entitled  "Guaranteed  Delivery" in Section 3 of the
Offer to Purchase is deleted in its  entirety.  The  original  (gray)  Notice of
Guaranteed Delivery  previously  circulated with the Offer to Purchase should be
discarded.  Shareholders who hold Share  Certificates in the account of a broker
or other nominee should consider withdrawing them several days in advance of the
Expiration  Date if they wish to properly  tender  Shares,  since the  customary
procedures for guaranteed delivery are not available.

         Distribution  Of Rights.  Holders of Shares  will be required to tender
one Right for each Share tendered to effect a valid tender of such Share. Unless
and until the  Distribution  Date (as  defined in Section 7 below)  occurs,  the
Rights are represented by and transferred with the Shares.  Accordingly,  if the
Distribution  Date does not occur prior to the  Expiration  Date of the Offer, a
tender  of  Shares  will  constitute  a tender of the  associated  Rights.  If a
Distribution  Date has occurred,  certificates  representing  a number of Rights
equal to the number of Shares being tendered must be delivered to the Depositary
in order for such  Shares to be validly  tendered.  If a  Distribution  Date has
occurred,  a tender of Shares  without  Rights  constitutes  an agreement by the
tendering  shareholder to deliver  certificates  representing a number of Rights
equal to the number of Shares  tendered  pursuant to the Offer to the Depositary
within three NYSE trading days after the date such certificates are distributed.
Purchaser  reserves the right to require that it receive such certificates prior
to accepting Shares for payment. If a Distribution Date has occurred, unless the
Rights are redeemed prior to the Expiration  Date,  shareholders  who sell their
rights  separately from their Shares and do not otherwise acquire Rights may not
be able to  satisfy  the  requirements  of the Offer for the  tender of  Shares.
Payment for Shares  tendered  and  purchased  pursuant to the Offer will be made
only after  timely  receipt by the  Depositary  of,  among  other  things,  such
certificates,  if such  certificates have been distributed to holders of Shares.
Purchaser  will not pay any  additional  consideration  for the Rights  tendered
pursuant to the Offer.

         Determination  Of Validity.  All  questions as to the  validity,  form,
eligibility  (including  time of  receipt)  and  acceptance  for  payment of any
tendered  Shares  pursuant  to any of the  procedures  described  above  will be
determined  by Purchaser in its sole  discretion,  whose  determination  will be
final and binding on all  parties.  Purchaser  reserves  the  absolute  right to
reject any or all  tenders of any  Shares  determined  by it not to be in proper
form or if the  acceptance  for payment of, or payment for,  such Shares may, in
the opinion of  Purchaser's  counsel,  be unlawful.  Purchaser also reserves the
absolute  right, in its sole  discretion,  to waive any of the conditions of the
Offer or any defect or  irregularity in any tender with respect to Shares of any
particular  shareholder,  whether or not similar defects or  irregularities  are
waived in the case of other  shareholders.  In such event, if required under the
rules of the SEC,  Purchaser will extend the Offer in accordance  with the SEC's
rules.  No tender of Shares will be deemed to have been  validly  made until all
defects and irregularities have been cured or waived.

         Purchaser's  interpretation  of the terms and  conditions  of the Offer
(including the Letter of Transmittal and the instructions thereto) will be final
and  binding.  None of Parent,  Purchaser,  the  Company,  the  Depositary,  the
Information  Agent  or  any  other  person  will  be  under  any  duty  to  give
notification  of any  defects  or  irregularities  in  tenders or will incur any
liability for failure to give any such notification.

         Appointment As Proxy. By executing a Letter of Transmittal as set forth
above, a tendering  shareholder  irrevocably  appoints designees of Purchaser as
such shareholder's  proxies,  each with full power of substitution,  to the full
extent of such shareholder's  rights with respect to the Shares tendered by such
shareholder  and  accepted  for  payment by  Purchaser  (and any and all noncash
dividends,  distributions,  rights,  other Shares, or other securities issued or
issuable  in respect  of such  Shares).  All such  proxies  shall be  considered
coupled  with an interest  in the  tendered  Shares.  This  appointment  will be
effective if, when, and only to the extent that,  Purchaser  accepts such Shares
for payment pursuant to the Offer.  Upon such acceptance for payment,  all prior
proxies  given  by such  shareholder  with  respect  to such  Shares  and  other
securities will,  without further action, be revoked,  and no subsequent proxies
may be given.  The designees of Purchaser  will,  with respect to the Shares and
other  securities  for which the  appointment  is  effective,  be  empowered  to
exercise all voting and other rights of such  shareholder  as they in their sole
discretion  may deem  proper at any  annual,  special,  adjourned  or  postponed
meeting of the Company's  shareholders,  including the Annual Meeting  scheduled
for May 2, 1997, by written consent or otherwise.

         TO PREVENT  BACKUP  FEDERAL  INCOME  TAX  WITHHOLDING  WITH  RESPECT TO
PAYMENT TO  CERTAIN  SHAREHOLDERS  OF THE  PURCHASE  PRICE FOR SHARES  PURCHASED
PURSUANT TO THE OFFER,  EACH SUCH  SHAREHOLDER  MUST PROVIDE THE DEPOSITARY WITH
SUCH SHAREHOLDER'S CORRECT TAXPAYER  IDENTIFICATION NUMBER AND CERTIFY THAT SUCH
SHAREHOLDER IS NOT SUBJECT TO BACKUP FEDERAL INCOME TAX WITHHOLDING BY


                                       -4-
<PAGE>
COMPLETING  THE  SUBSTITUTE  FORM W-9 IN THE  LETTER OF  TRANSMITTAL.  IF BACKUP
WITHHOLDING APPLIES WITH RESPECT TO A SHAREHOLDER, THE DEPOSITARY IS REQUIRED TO
WITHHOLD 31% OF ANY PAYMENTS MADE TO SUCH SHAREHOLDER.  SEE INSTRUCTION 9 OF THE
LETTER OF TRANSMITTAL.

         Purchaser's  acceptance for payment of Shares tendered  pursuant to the
Offer will constitute a binding agreement between the tendering  shareholder and
Purchaser upon the terms and subject to the conditions of the Offer.

         4.       SOURCE AND AMOUNT OF FUNDS.

         The  discussion  set forth in  Section 10 of the Offer to  Purchase  is
hereby amended and supplemented as follows:

         Purchaser estimates that the total amount of funds required to purchase
Shares  pursuant to the Offer and to pay all related  costs and expenses will be
approximately  $29.5  million.  Purchaser  plans to obtain  such  funds  through
capital contributions or advances made by Parent. As of December 31, 1996 Parent
had available over $400 million in cash and cash equivalents.

         5.       BACKGROUND OF THE OFFER; CONTACTS WITH THE COMPANY.

         In the ordinary course of Parent's long-term  strategic review process,
Parent  and its  subsidiaries  routinely  analyze  potential  combinations  with
various companies. Recently, Parent has placed particular emphasis on studies of
the Company, considering it to be an ideal candidate for such a combination.

         On March 27, 1997,  Parent sent the following letter to the Chairman of
the Company  regarding a proposed business  combination  between the Company and
Parent:

"Dear Mr. Lozyniak:

         We are writing to propose a business  combination between our companies
and to express a desire that we work together to accomplish this  transaction on
an amicable, negotiated basis.

         The Board of Directors of WHX has  authorized me to present an offer to
acquire in a merger transaction all of the outstanding shares of common stock of
Dynamics Corp. at a price of $40 per share.  This proposal  represents a premium
of 16% over the  current  market  price and nearly 30% over the market  price at
year-end.

         In making this proposal,  please be advised that we have no interest in
increasing the equity stake which Dynamics Corp. holds in CTS Corporation, or in
changing the nature of the current relationship between the two companies.

         This proposal is subject to  negotiation  and execution of  appropriate
definitive    agreements    containing   customary   and   mutually   acceptable
representations, warranties, terms and conditions. In pursuing this transaction,
we would expect  representatives  from your Board of Directors to join the board
of the combined  enterprise  and the senior  management  of your company to stay
with the combined enterprise under mutually satisfactory arrangements.

         We are confident of our ability to complete this  transaction  on these
terms.  In this  respect,  please  note  that as of  December  31,  1996 we have
available over $400 million in cash and cash equivalents.

         We are certain  that,  upon  reflection,  your Board of Directors  will
recognize the fine opportunity  which a combination with WHX represents for your
stockholders.  Our  objective  is  to  work  with  you  in  a  professional  and
constructive  manner to complete our proposal so that the best interests of your
stockholders  and  employees  can be served.  Please be advised that we would be
prepared to increase our offer if additional  information  which may be provided
about your company demonstrates that a higher price is warranted.

         We are willing to discuss with you or a committee of your directors all
aspects of our  proposal and to answer any  questions  which you may have. I and
other  representatives of WHX are available to meet with you for this purpose at
any time.  If we do not hear from you by the close of business on Friday,  March
28, we are


                                       -5-
<PAGE>
authorized to present this  proposal  directly to your  stockholders,  through a
proxy  solicitation  at the  upcoming  annual  meeting and through a cash tender
offer.

                                             Very truly yours,

                                             /s/ Ron LaBow
                                                 ---------

                                             Ron LaBow
                                             Chairman of the Board"

         On March 31, 1997,  the Company  issued a press  release in response to
the announcement of the Offer stating that the Company  acknowledged  receipt of
WHX's letter on March 27, 1997 and advised WHX it would communicate the offer to
its  directors  and  respond  that week.  The  Company  said it has been able to
contact  all its  directors  except  one and their  unanimous  initial  reaction
following preliminary discussions was that the offer was "totally inadequate."

         On April 9, 1997, Purchaser issued the following press release:

                  "New York, N.Y. -- April 9, 1997 -- WHX Corporation (NYSE:WHX)
announced  today  that its  wholly-owned  subsidiary  SB  Acquisition  Corp.  is
amending its tender offer for Dynamics Corporation of America (NYSE:DYA),  which
was first announced on March 31, 1997, in the following respects:

                  First, it is increasing the price per share being offered from
$40 to $45.  Concurrently  with  that  change,  the  price  to be  paid  for all
remaining shares in a subsequent cash merger is also being increased from $40 to
$45 per share.

                  Second,  the number of shares  sought to be  purchased  in the
tender offer is being fixed at up to 649,000,  or 17% of the outstanding shares.
Together with the 2.9% of Dynamics Corp. stock already owned, upon completion of
the tender offer the  percentage  owned by SB Acquisition  Corp.  would be up to
19.9%.  As  previously  announced,  there is no minimum  number of shares  being
sought.

                  Third,  a valid tender will no longer require that a tendering
stockholder  be a  record  holder  as of March  14,  1997 or  otherwise  hold an
irrevocable proxy from a record holder as of that date.

                  As previously announced, WHX intends to solicit proxies at the
annual meeting of Dynamics  Corp.,  scheduled for Friday,  May 2, 1997, to elect
its slate of four  nominees to the Board of Directors and to amend the company's
by-laws.

                  WHX believes  that the $45 per share price now being  offered,
through SB  Acquisition  Corp.'s  tender offer and through WHX's  proposal for a
cash merger,  represents  an  attractive  price for Dynamics  Corp.  WHX remains
willing to negotiate an amicable agreement to acquire Dynamics Corp. and thereby
avoid the  necessity of a proxy  contest for  corporate  control.  As previously
announced,  WHX has no plan to increase the ownership  stake in CTS  Corporation
(NYSE:CTS) held by Dynamics Corp. or to change the current  relationship between
the two companies."

         6.       PURPOSE OF THE OFFER; THE MERGER OFFER; PROXY SOLICITATION;
                  PLANS FOR THE COMPANY.

         The  discussion  set forth in  Section 11 of the Offer to  Purchase  is
hereby amended and supplemented as follows:

         The Merger  Proposal.  Parent and Purchaser  intend that in the Merger,
each then outstanding Share (other than Shares owned by Parent, Purchaser or any
of their  wholly  owned  subsidiaries  and Shares  held in the  treasury  of the
Company)  would be  converted  into the right to  receive  $45 in cash,  without
interest.

         Proxy  Solicitation.  The Purchaser  Nominees are committed to promptly
effect a merger of the Company with and into the Purchaser at a price of $45 per
Share in cash.


                                       -6-
<PAGE>
         7.       CONDITIONS OF THE OFFER.

         The  discussion  set forth in Section 13 of the Offer to  Purchaser  is
hereby amended and restated as follows:

         Notwithstanding  any other  provisions of the Offer, and in addition to
(and not in limitation of)  Purchaser's  rights to extend and amend the Offer at
any time in its reasonable discretion, Purchaser shall not be required to accept
for payment or,  subject to any  applicable  rules and  regulations  of the SEC,
including  Rule  14e-1(c)  under  the  Exchange  Act  (relating  to  Purchaser's
obligation to pay for or return tendered  Shares  promptly after  termination or
withdrawal of the Offer),  pay for, and may delay the  acceptance for payment of
or, subject to the restriction  referred to above, the payment for, any tendered
Shares,  and may  terminate  the Offer as to any Shares not then paid for, if in
the reasonable judgment of Purchaser, at any time on or after March 27, 1997 and
prior to the acceptance for payment of, or payment for, such Shares,  any of the
following  events  shall  occur or  shall be  determined  by  Purchaser  to have
occurred:

                  (a) there shall have been  threatened,  instituted  or pending
         any action,  proceeding,  claim or  application  by any  government  or
         governmental   regulatory  or   administrative   authority  or  agency,
         domestic, foreign or supranational, or by any other person, domestic or
         foreign, before any court or governmental, regulatory or administrative
         agency, authority or tribunal, domestic, foreign or supranational, that
         (i) challenges or seeks to make illegal, to delay or otherwise directly
         or indirectly to restrain or prohibit, or which is likely to impose, in
         the  reasonable  judgment of Purchaser,  voting,  procedural,  price or
         other  requirements  and federal  securities law in connection with the
         acquisition of Shares by Purchaser or any of its affiliates, the making
         of the Offer,  the  acceptance  for payment of or payment for Shares by
         Purchaser or any of its affiliates or the consummation of the Merger or
         any other business combination involving the Company or the performance
         of any of the contracts or other arrangements entered into by Purchaser
         or any of its  affiliates in  connection  with the  acquisition  of the
         Company,  seeking to obtain any material damages as a result thereof or
         otherwise directly or indirectly relating to the Offer or the Merger or
         such other business  combination,  (ii) seeks to restrain,  prohibit or
         limit  the  exercise  of full  rights  of  ownership  or  operation  by
         Purchaser  or any  of its  affiliates  of  all  or any  portion  of the
         business  or  assets  of the  Company  or any  of its  subsidiaries  or
         Purchaser or any of its affiliates or to compel Purchaser or any of its
         affiliates  to dispose of or to hold  separately  all or any portion of
         the  business  or assets of the Company or any of its  subsidiaries  or
         Purchaser  or any of its  affiliates,  (iii) seeks to impose or confirm
         limitations  on the  ability  of  Purchaser  or  any of its  affiliates
         effectively  to acquire or hold or to exercise full rights of ownership
         of Shares,  including  without  limitation the right to vote the Shares
         acquired or owned by the Parent or Purchaser  or any of its  affiliates
         on all matters  properly  presented to the shareholders of the Company,
         or the right to vote any  shares  of  capital  stock of any  subsidiary
         directly  or  indirectly  owned by the  Company,  (iv) seeks to require
         divestiture  by the Parent or Purchaser or any of its affiliates of any
         Shares, (v) might result, in the reasonable judgment of Purchaser, in a
         diminution  of the benefits  expected to be derived by Purchaser or any
         of its  affiliates  as a result of the Offer or the Merger or any other
         business  combination  involving the Company, or in a diminution of the
         value  of the  Shares  or the  Company  or any of its  subsidiaries  to
         Purchaser or any of its  affiliates,  or (vi)  challenges  or adversely
         affects  the Merger or any other  business  combination  involving  the
         Company; or

                  (b) other than the  application  of the waiting  periods under
         the HSR Act and the  necessity  for the  approvals and other actions by
         any  domestic   (federal   and  state)  or  foreign  or   supranational
         governmental,  administrative or regulatory agency described in Section
         14,  there  shall have been  proposed,  sought,  promulgated,  enacted,
         entered,  enforced or deemed applicable to the Offer, the Merger or any
         other business combination  involving the Company, by any government or
         governmental,  regulatory or  administrative  agency or authority or by
         any  court or  tribunal,  in each case  whether  domestic,  foreign  or
         supranational,   any  statute,  rule,  regulation,   judgment,  decree,
         decision,  order or  injunction  that,  in the  reasonable  judgment of
         Purchaser,  might,  directly  or  indirectly,  result  in  any  of  the
         consequences  referred to in clauses (i) through (vi) of paragraph  (a)
         above; or

                  (c)  any  change  (or  any  condition,  event  or  development
         involving a prospective  change) shall have occurred or been threatened
         in the business, properties, assets, liabilities, shareholders' equity,
         financial condition,  capitalization,  licenses,  franchises,  permits,
         operations, results of operations or prospects of the Company or any of
         its  subsidiaries,  affiliates or CTS (or  Purchaser  shall have become
         aware thereof) or in general economic or financial market conditions in
         the United States or abroad that, in the reasonable


                                       -7-
<PAGE>
         judgment of Purchaser,  is or may be materially  adverse to the Company
         or any of its  subsidiaries  or  affiliates,  or  Purchaser  shall have
         become  aware  of  any  facts  that,  in  the  reasonable  judgment  of
         Purchaser,  have or may have material adverse significance with respect
         to  either  the  value of the  Company  or any of its  subsidiaries  or
         affiliates  or  CTS,  or the  value  of the  Shares  to the  Parent  or
         Purchaser or any of its affiliates; or

                  (d) there shall have  occurred (i) any general  suspension  of
         trading in, or  limitation  on prices for,  securities  on any national
         securities  exchange or in the United States  over-the-counter  market,
         (ii) the  declaration  of a banking  moratorium  or any  suspension  of
         payments in respect of banks in the United  States,  (iii) any material
         adverse  change (or any  existing  or  threatened  condition,  event or
         development  involving a prospective material adverse change) in United
         States or any other  currency  exchange  rates or a suspension of, or a
         limitation on, the markets  therefor,  (iv) any other material  adverse
         change in the market  price of the Shares,  the shares of CTS or in the
         United States  securities  or financial  markets  generally,  including
         without  limitation,  a decline of at least 10% in either the Dow Jones
         Average of  Industrial  Stocks or the  Standard & Poor's 500 index from
         March 31, 1997 through the date of  termination  or  expiration  of the
         Offer,  (v) the  commencement  of a war,  armed  hostilities  or  other
         international or national calamity directly or indirectly involving the
         United States,  (vi) any  limitation  (whether or not mandatory) by any
         governmental  authority  or any other  event  that,  in the  reasonable
         judgment of Purchaser,  may have  material  adverse  significance  with
         respect  to  the   extension  of  credit  by  banks  or  other  lending
         institutions  or the  financing of the Offer or the Merger or any other
         business combination  involving the Company or (vii) in the case of any
         of the situations  described in clauses (i) through (vi) above existing
         at the time of the  commencement of the Offer, a material  acceleration
         or worsening thereof; or

                  (e) a tender or  exchange  offer for some or all of the Shares
         shall have been publicly proposed to be made or shall have been made by
         another  person  (including the Company or any of its  subsidiaries  or
         affiliates),  or it shall have been  publicly  disclosed  or  Purchaser
         shall have otherwise deemed that (i) any person,  entity (including the
         Company or any of its  subsidiaries  or affiliates) or "group"  (within
         the  meaning  of  Section  13(d)(3)  of the  Exchange  Act)  shall have
         acquired or proposed to acquire  beneficial  ownership of more than 10%
         of any class or series of capital stock of the Company  (including  the
         Shares) through the  acquisition of stock,  the formation of a group or
         otherwise,  or shall have been  granted any  option,  right or warrant,
         conditional or otherwise,  to acquire beneficial ownership of more than
         10% of any class or series of capital  stock of the Company  (including
         the Shares),  other than acquisitions for bona fide arbitrage  purposes
         only and other than as  disclosed in a Schedule 13D or 13G on file with
         the Commission prior to March 31, 1997, (ii) any such person, entity or
         group  which,  prior to such date,  had filed such a Schedule  with the
         Commission,  shall have  acquired or  proposed to acquire,  through the
         acquisition of stock, the formation of a group or otherwise, beneficial
         ownership of additional  shares of any class or series of capital stock
         of the Company  (including the Shares)  constituting  2% or more of any
         such class or series,  or shall have been granted any option,  right or
         warrant,  conditional or otherwise,  to acquire beneficial ownership of
         shares  of any  class  or  series  of  capital  stock  of  the  Company
         (including  the  Shares)  constituting  2% or more of any such class or
         series,  (iii) any person,  entity or group shall have  entered  into a
         definitive  agreement  or an  agreement in principle or made a proposal
         with  respect to a tender or exchange  offer for some or all the Shares
         or a  merger,  consolidation  or  other  business  combination  with or
         involving the Company or any of its  subsidiaries or affiliates or (iv)
         any person,  entity or group shall have filed a Notification and Report
         Form  under  the HSR Act or made a public  announcement  reflecting  an
         intent to acquire the Company or any of its  subsidiaries or any assets
         or securities of the Company or any of its subsidiaries; or

                  (f)  the  Company  or  any  of its  subsidiaries  shall  have,
         directly or indirectly,  (i) split,  combined or otherwise changed,  or
         authorized or proposed the split,  combination  or other change of, the
         Shares or its  capitalization,  (ii)  acquired  or  otherwise  caused a
         reduction in the number of, or authorized  or proposed the  acquisition
         or other reduction in the number of, any outstanding Shares (other than
         a redemption of the Rights in  accordance  with the terms of the Rights
         Agreement  as publicly  disclosed to be in effect on March 31, 1997) or
         other  securities  of the  Company  or any  subsidiary  thereof,  (iii)
         issued,  distributed or sold, or authorized,  proposed or announced the
         issuance, distribution or sale of, (A) any additional Shares, shares of
         any other class or series of capital stock, other voting securities, or
         any securities  convertible into or exchangeable or exercisable for any
         of the  foregoing,  or  options,  rights or  warrants,  conditional  or
         otherwise,  to acquire any of the  foregoing in  accordance  with their
         terms, (B) any shares of any class or


                                       -8-
<PAGE>
         series of capital  stock,  other voting  securities,  or any securities
         convertible  into  or  exchangeable  or  exercisable  for  any  of  the
         foregoing of CTS or (C) any other  securities  or rights in respect of,
         in lieu of or in substitution or exchange for any shares of its capital
         stock,  (iv)  permitted the issuance or sale of any shares of any class
         of capital stock or other debt or equity  securities of any  subsidiary
         of the Company or any securities  convertible  into or  exchangeable or
         exercisable for any of the foregoing, (v) declared, paid or proposed to
         declare or pay any dividend or other  distribution,  whether payable in
         cash,  securities or other  property,  on, or in respect of, any Shares
         (other than a redemption  of the Rights in  accordance  with the Rights
         Agreement  as publicly  disclosed to be in effect on March 31, 1997 and
         distributions of regular  semi-annual  dividends not to exceed $.10 per
         Share),  (vi)  altered or  proposed to alter any  material  term of any
         outstanding  security  of  the  Company  or  any  of  its  subsidiaries
         (including  the  Rights),   (vii)  issued,   distributed  or  sold,  or
         authorized or proposed the issuance,  distribution or sale of, any debt
         securities  or  securities   convertible   into  or   exchangeable   or
         exercisable  for debt  securities  or any  rights,  warrants or options
         entitling the holder thereof to purchase or otherwise  acquire any debt
         securities,   or  otherwise   incurred,   authorized  or  proposed  the
         incurrence  of, any debt other than in the ordinary  course of business
         and  consistent  with past practice or any debt  containing  burdensome
         covenants,  (viii)  authorized,   recommended,  proposed,  effected  or
         announced  its  intention  to  engage  in any  merger  (other  than the
         Merger), consolidation, liquidation, dissolution, business combination,
         acquisition  (including  by way of exchange)  of assets or  securities,
         disposition  (including  by way of exchange)  of assets or  securities,
         joint venture,  any release or  relinquishment of any material contract
         or other rights of the Company or any of its  affiliates  or CTS or any
         comparable  event  not  in  the  ordinary  course  of  business,   (ix)
         authorized,  recommended,  proposed  or  announced  its intent to enter
         into,  or entered into any  agreement or  arrangement  with any person,
         entity or group that in the  reasonable  judgment of Purchaser,  has or
         may have material adverse significance with respect to the value of the
         Company  or any of  its  affiliates,  or the  value  of the  Shares  to
         Purchaser or any of its affiliates, (x) amended or proposed, adopted or
         authorized any amendment  (other than any amendment which provides that
         the Rights are inapplicable to the Offer and the Merger) to the Charter
         or the By-Laws or similar  organizational  documents  of the Company or
         any of its subsidiaries or the Rights Agreement or Purchaser shall have
         learned that the Company or any of its subsidiaries shall have proposed
         or adopted  any such  amendment  which  shall not have been  previously
         disclosed,  (xi) entered into or amended any  employment,  severance or
         similar  agreement,  arrangement or plan with or for the benefit of any
         employee of the Company or any of its  subsidiaries  (other than in the
         ordinary  course of  business)  or so as to provide  for  increased  or
         accelerated  benefits to employees as a result of or in connection with
         the making of the Offer,  the  acceptance for payment of or payment for
         Shares by  Purchaser  or the  consummation  by  Purchaser or any of its
         affiliates of the Merger or any other  business  combination  involving
         the Company,  (xii) except as may be required by law,  taken any action
         to terminate or amend any employee  benefit plan (as defined in Section
         3(2)  of the  Employee  Retirement  Income  Security  Act of  1974,  as
         amended) of the Company or any of its  affiliates,  or Purchaser  shall
         have  become  aware of any  such  action  which  shall  not  have  been
         previously disclosed,  or (xiii) agreed in writing or otherwise to take
         any of the foregoing actions; or

                  (g)  Purchaser  shall  become  aware  (i)  that  any  material
         contractual  right of the Company or any of its  subsidiaries  shall be
         impaired or otherwise adversely affected or that any material amount of
         indebtedness  of the Company or any of its  subsidiaries  shall  become
         accelerated or otherwise  become due or become subject to  acceleration
         prior to its  stated due date,  in each case with or without  notice or
         the  lapse of time or both,  as a result of or in  connection  with the
         Offer or the  consummation by Purchaser or any of its affiliates of the
         Merger or any other business combination involving the Company, (ii) of
         any covenant, term or condition in any of the instruments or agreements
         of the  Company  or any of its  subsidiaries  that,  in the  reasonable
         judgment of Purchaser, is or may be (whether considered alone or in the
         aggregate with other such  covenants,  terms or conditions)  materially
         adverse to either the value of the  Company or any of its  subsidiaries
         (including  without limitation any event of default that may occur as a
         result  of or  in  connection  with  the  Offer,  the  consummation  by
         Purchaser or any of its  affiliates of the Merger or any other business
         combination  involving  the  Company)  or the  value of the  Shares  to
         Purchaser or any of its affiliates or the  consummation by Purchaser or
         any of its affiliates of the Merger or any other  business  combination
         involving the Company, or (iii) that any report, document,  instrument,
         financial   statement  or  schedule  of  the  Company  filed  with  the
         Commission  contained,  when filed,  an untrue  statement of a material
         fact or omitted to state a material fact required to be stated  therein
         or necessary in order to make the statements made therein,  in light of
         the circumstances under which they were made, not misleading; or

                                       -9-
<PAGE>
                  (h) any waiting  periods  under the HSR Act  applicable to the
         purchase of Shares pursuant to the Offer shall not have expired or been
         terminated,  or any approval,  permit,  authorization or consent of any
         domestic or foreign or supranational  governmental,  administrative  or
         regulatory  agency  (federal,  state,  local,  provincial or otherwise)
         (including  those  described  or  referred  to in Section  14) which is
         required or believed to be appropriate  shall not have been obtained on
         terms satisfactory to the Parent in its reasonable discretion; or

                  (i) Purchaser or any of its affiliates shall have entered into
         a definitive  agreement  or  announced  an agreement in principle  with
         respect  to the  Merger  or any  other  business  combination  with the
         Company  or any of its  affiliates  or  the  purchase  of any  material
         portion  of the  securities  or  assets  of the  Company  or any of its
         subsidiaries,  or  Purchaser or any of its  affiliates  and the Company
         shall have agreed that Purchaser  shall amend or terminate the Offer or
         postpone the payment for the Shares pursuant thereto.

         The foregoing  conditions are for the sole benefit of Purchaser and may
be waived by  Purchaser in whole or in part at any time and from time to time in
its reasonable discretion.  Any determination by Purchaser concerning the events
described above shall be final and binding upon all parties including  tendering
shareholders.  The  failure  by  Purchaser  at any time to  exercise  any of the
foregoing  rights  shall not be deemed a waiver of any such  right and each such
right  shall be deemed an ongoing  right  which may be  asserted at any time and
from time to time.

         A public  announcement  will be made of a material change in, or waiver
of, such conditions, to the extent required by Rules 14d-4(c) and 14d-6(d) under
the  Exchange  Act, and the Offer will be extended in  connection  with any such
change or waiver to the extent required by such rules.

         8.  MISCELLANEOUS.  Parent  and  Purchaser  have  filed with the SEC an
amendment to the Schedule  14D-1 pursuant to Rule 14d-3 of the General Rules and
Regulations under the Securities  Exchange Act,  furnishing  certain  additional
information with respect to the Offer, and may file further amendments  thereto.
The Schedule  14D-1,  and any amendments  thereto,  including  exhibits,  may be
inspected at, and copies may be obtained  from,  the same places and in the same
manner as set forth in Section 7 of the Offer to Purchase (except that they will
not be available at the regional offices of the SEC).

         Except as modified by this Supplement, the terms set forth in the Offer
to Purchase  and the related  Letter of  Transmittal  remain  applicable  in all
respects to the Offer and this Supplement should be read in conjunction with the
Offer to Purchase and the related Letter of Transmittal.

SB ACQUISITION CORP.

April 10, 1997


                                      -10-
<PAGE>
         Manually  executed  facsimile  copies  of the  Letter  of  Transmittal,
properly completed and duly signed, will be accepted. The Letter of Transmittal,
certificates  for the Shares and any other required  documents should be sent by
each  shareholder of the Company or his broker,  dealer,  commercial bank, trust
company or other  nominee to the  Depositary  at one of its  addresses set forth
below:

                        The Depositary for the Offer is:


                        HARRIS TRUST COMPANY OF NEW YORK


       By Mail:            By Overnight Courier:              By Hand:
  Wall Street Station    77 Water Street, 4th Floor        Receive Window
     P.O. Box 1023           New York, NY 10005      77 Water Street, 5th Floor
New York, NY 10268-1023                                  New York, NY 10005
                           By Facsimile Transmission:
                        (for Eligible Institutions Only)
                             (212) 701-7636 or 7637

                    For Information Telephone (call collect):
                                 (212) 701-7624






         Any questions or requests for  assistance  or additional  copies of the
Offer to  Purchase,  the  Letter of  Transmittal  and the  Notice of  Guaranteed
Delivery may be directed to the Information Agent or the Dealer Manager at their
respective  telephone  numbers and locations  listed below. You may also contact
your  broker,  dealer,  commercial  bank or trust  company or other  nominee for
assistance concerning the Offer.

                     The Information Agent for the Offer is:

                            GEORGESON & COMPANY INC.

                                Wall Street Plaza
                            New York, New York 10005
                            Telephone: (212) 440-9800

                                       or

                         CALL TOLL FREE: (800) 223-2064




                                  [Back Cover]




                                                                 EXHIBIT (A)(11)


                              LETTER OF TRANSMITTAL
       TO TENDER SHARES OF COMMON STOCK (INCLUDING THE ASSOCIATED RIGHTS)
                                       OF

                         DYNAMICS CORPORATION OF AMERICA

             PURSUANT TO THE OFFER TO PURCHASE, DATED MARCH 31, 1997
                AND THE SUPPLEMENT THERETO, DATED APRIL 10, 1997
                                       BY

                              SB ACQUISITION CORP.,
                            A WHOLLY OWNED SUBSIDIARY
                                       OF
                                 WHX CORPORATION

         THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT,
                               NEW YORK CITY TIME,
            ON TUESDAY, APRIL 29, 1997, UNLESS THE OFFER IS EXTENDED.

                        The Depositary for the Offer is:

                        HARRIS TRUST COMPANY OF NEW YORK


       By Mail:            By Overnight Courier:               By Hand:
  Wall Street Station    77 Water Street, 4th Floor         Receive Window
     P.O. Box 1023           New York, NY 10005       77 Water Street, 5th Floor
New York, NY 10268-1023                                   New York, NY 10005
                           By Facsimile Transmission:
                        (for Eligible Institutions Only)
                             (212) 701-7636 or 7637
                    For Information Telephone (call collect):
                                 (212) 701-7624



  DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET FORTH
    ABOVE OR TRANSMISSION OF INSTRUCTIONS VIA FACSIMILE OR TELEX TRANSMISSION
  OTHER THAN AS SET FORTH ABOVE WILL NOT CONSTITUTE A VALID DELIVERY. YOU MUST
     SIGN THIS LETTER OF TRANSMITTAL WHERE INDICATED BELOW AND COMPLETE THE
                       SUBSTITUTE FORM W-9 PROVIDED BELOW.

            THE INSTRUCTIONS ACCOMPANYING THIS LETTER OF TRANSMITTAL
                   SHOULD BE READ CAREFULLY BEFORE THIS LETTER
                          OF TRANSMITTAL IS COMPLETED.

         THIS  LETTER OF  TRANSMITTAL  IS TO BE  COMPLETED  BY  SHAREHOLDERS  OF
DYNAMICS  CORPORATION OF AMERICA EITHER IF CERTIFICATES  EVIDENCING SHARES (EACH
AS DEFINED BELOW) ARE TO BE FORWARDED  HEREWITH,  OR IF DELIVERY OF SHARES IS TO
BE MADE BY BOOK-ENTRY  TRANSFER TO THE  DEPOSITARY'S  ACCOUNT AT THE  DEPOSITORY
TRUST COMPANY OR THE  PHILADELPHIA  DEPOSITORY TRUST COMPANY (EACH A "BOOK-ENTRY
TRANSFER

<PAGE>
FACILITY")   PURSUANT  TO  THE  BOOK-ENTRY   TRANSFER  PROCEDURE   DESCRIBED  IN
"PROCEDURES  FOR TENDERING  SHARES" OF THE OFFER TO PURCHASE (AS DEFINED BELOW).
DELIVERY OF DOCUMENTS TO A BOOK-ENTRY  TRANSFER FACILITY IN ACCORDANCE WITH SUCH
BOOK-ENTRY  TRANSFER  FACILITY'S  PROCEDURES DOES NOT CONSTITUTE DELIVERY TO THE
DEPOSITARY.

         While the previously  circulated  (yellow) Letter of Transmittal refers
to the Offer to Purchase,  dated March 31,  1997,  and the  Supplement  thereto,
dated April 10,  1997,  shareholders  making use thereof to tender  their Shares
will nevertheless  receive $45 per Share for each Share validly tendered and not
withdrawn  and  accepted  for  payment  pursuant  to the  Offer,  subject to the
conditions of the Offer.  Shareholders who have previously  validly tendered and
have not withdrawn  their Shares  pursuant to the Offer are not required to take
any further action to receive the increased tender price of $45 per Share.

         This revised (white) Letter of Transmittal or the previously circulated
(yellow)  Letter of  Transmittal  is to be completed by  shareholders  either if
certificates  evidencing Shares (as defined below) are to be forwarded  herewith
or  if  delivery  of  Shares  is  to be  made  by  book-entry  transfer  to  the
Depositary's  Account  at  any  Book-Entry  Transfer  Facility  pursuant  to the
book-entry  transfer  procedure  described in Section 3 of the Offer to Purchase
(as defined below). DELIVERY OF DOCUMENTS TO A BOOK-ENTRY TRANSFER FACILITY DOES
NOT CONSTITUTE DELIVERY TO THE DEPOSITORY.

/ /      CHECK  HERE IF  TENDERED  SHARES  ARE  BEING  DELIVERED  BY  BOOK-ENTRY
         TRANSFER TO THE DEPOSITARY'S  ACCOUNT AT ONE OF THE BOOK-ENTRY TRANSFER
         FACILITIES AND COMPLETE THE FOLLOWING:

         Name of Tendering Institution:
                                       ---------------------------------

         CHECK BOX OF APPLICABLE BOOK-ENTRY TRANSFER FACILITY:

                / /      DTC              / /       PDTC

Account Number:
               ---------------------------------------------------------

Transaction Code Number:
                        ------------------------------------------------


                                       -2-
<PAGE>

<TABLE>
<CAPTION>

- -----------------------------------------------------------------------------------------------------------------------------
                                                  DESCRIPTION OF SHARES TENDERED
- -----------------------------------------------------------------------------------------------------------------------------
    Name(s) and Address(es) of Registered Holder(s)                         Share Certificate(s) Tendered
              (Please fill in, if blank)                                (Attach Additional List if Necessary)
- -----------------------------------------------------------------------------------------------------------------------------
<S>                                                           <C>                  <C>                       <C>
                                                                                     Total Number of          Number of
                                                              Certificate          Shares Represented          Shares
                                                              Number(s)*           By Certificate(s)*        Tendered**
- -----------------------------------------------------------------------------------------------------------------------------

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

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

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

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

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

                                                        ---------------------------------------------------------------------
                                                             Total Shares
- -----------------------------------------------------------------------------------------------------------------------------
*  Need not be completed by shareholders tendering by book-entry transfer.
** Unless otherwise indicated, it will be assumed that all Shares being delivered to the Depositary are being tendered.  
   See Instruction 4.
- -----------------------------------------------------------------------------------------------------------------------------
</TABLE>


         The names and addresses of the registered holders should be printed, if
         not already printed above,  exactly as they appear on the  certificates
         representing  Shares tendered  hereby.  The  certificates and number of
         Shares that the undersigned wishes to tender should be indicated in the
         appropriate boxes.

                    NOTE: SIGNATURES MUST BE PROVIDED BELOW.
      PLEASE READ THE INSTRUCTIONS SET FORTH IN THIS LETTER OF TRANSMITTAL
                                   CAREFULLY.

                                       -3-

<PAGE>
Ladies and Gentlemen:

         The  undersigned  hereby  tenders to SB  Acquisition  Corp., a New York
corporation  ("Purchaser")  and a wholly owned subsidiary of WHX Corporation,  a
Delaware corporation, the above described shares of common stock, par value $.10
per  share  (the  "Shares")  of  Dynamics  Corporation  of  America,  a New York
corporation  (the  "Company"),  including the  associated  Common Stock Purchase
Rights  (the  "Rights")  issued  pursuant to the Rights  Agreement,  dated as of
January 30, 1986, as amended on December 27, 1995, between the Company and First
National Bank of Boston,  as Rights Agent,  at a price of $45 per Share,  net to
the seller in cash, without interest thereon (the "Offer Price"), upon the terms
and subject to the  conditions  set forth in the Offer to Purchase,  dated March
31, 1997 (the "Offer to  Purchase"),  and in the related  Letter of  Transmittal
(which, as amended from time to time, together  constitute the "Offer").  UNLESS
THE  CONTEXT  REQUIRES  OTHERWISE,  ALL  REFERENCES  HEREIN TO THE SHARES  SHALL
INCLUDE THE  ASSOCIATED  RIGHTS,  AND ALL REFERENCES TO THE RIGHTS SHALL INCLUDE
ALL BENEFITS THAT MAY INURE TO THE HOLDERS OF THE RIGHTS  PURSUANT TO THE RIGHTS
AGREEMENT.

         Subject to, and effective  upon,  acceptance  for payment of the Shares
tendered herewith, in accordance with the terms of the Offer (including,  if the
Offer is extended or amended,  the terms and conditions of any such extension or
amendment),  the undersigned hereby sells, assigns and transfers to, or upon the
order of, Purchaser all right,  title and interest in and to all the Shares that
are being tendered  hereby (and any and all non-cash  dividends,  distributions,
rights,  other Shares or other securities  issued or issuable in respect thereof
or  declared,  paid or  distributed  in  respect of such  Shares  (collectively,
"Distributions")),  purchased pursuant to the Offer and irrevocably appoints the
Depositary  the true and lawful agent and  attorney-in-fact  of the  undersigned
with  respect  to  such  Shares  and  all  Distributions,  with  full  power  of
substitution  (such power of attorney  being deemed to be an  irrevocable  power
coupled  with  an  interest),  to  (i)  deliver  certificates  for  such  Shares
(individually,  a  "Share  Certificate")  and  all  Distributions,  or  transfer
ownership of such Shares and all  Distributions  on the account books maintained
by the  Book-Entry  Transfer  Facility,  together,  in  either  case,  with  all
accompanying  evidence of  transfer  and  authenticity  to, or upon the order of
Purchaser,  (ii) present such Shares and all  Distributions  for transfer on the
books of the Company,  and (iii) receive all benefits and otherwise exercise all
rights of  beneficial  ownership  of such Shares and all  Distributions,  all in
accordance with the terms of the Offer.

         By executing this Letter of Transmittal,  the  undersigned  irrevocably
appoints Ronald LaBow and Stewart E. Tabin as proxies of the  undersigned,  each
with full power of  substitution,  to vote in such manner as each such  attorney
and proxy or his substitute  shall,  in his sole  discretion,  deem proper,  and
otherwise to act (including pursuant to written consent) with respect to all the
Shares  tendered  hereby that have been  accepted  for payment by the  Purchaser
prior to the time of such vote or action (and all  Distributions of said Shares)
which the  undersigned  is  entitled to vote or consent  with  respect to at any
meeting of stockholders of the Company,  whether annual or special,  and whether
or not an  adjourned  meeting  (including  without  limitation  the 1997  Annual
Meeting of the Shareholders of the Company scheduled to be held on May 2, 1997).
THIS PROXY IS IRREVOCABLE and is granted in  consideration  of, and is effective
upon,  the  acceptance for payment of such Shares by the Purchaser in accordance
with the terms of the Offer.  Such acceptance for payment shall revoke any other
proxy  granted by the  undersigned  at any time with respect to such Shares (and
any other such Shares or  securities)  and no  subsequent  proxies will be given
(and if given will be deemed not to be  effective)  with respect  thereto by the
undersigned.

         The undersigned hereby represents and warrants that the undersigned has
full  power and  authority  to tender,  sell,  assign  and  transfer  the Shares
tendered hereby and all  Distributions,  that the undersigned  own(s) the Shares
tendered  hereby  and  that,  when such  Shares  are  accepted  for  payment  by
Purchaser,  Purchaser  will acquire  good,  marketable  and  unencumbered  title
thereto  and to all  Distributions,  free and clear of all liens,  restrictions,
charges and encumbrances, and that none of such Shares and Distributions will be
subject to any adverse claim. The undersigned,  upon request,  shall execute and
deliver all  additional  documents  deemed by the  Depositary or Purchaser to be
necessary  or desirable  to complete  the sale,  assignment  and transfer of the
Shares tendered hereby and all Distributions. In addition, the undersigned shall
remit and transfer  promptly to the  Depositary for the account of Purchaser all
Distributions  in  respect  of  the  Shares  tendered  hereby,   accompanied  by
appropriate documentation of


                                       -4-
<PAGE>
transfer,  and,  pending such  remittance and transfer or appropriate  assurance
thereof,  Purchaser  shall be entitled to all rights and  privileges as owner of
each such  Distribution and may withhold the entire purchase price of the Shares
tendered hereby or deduct from such purchase price,  the amount or value of such
Distribution as determined by Purchaser in its sole discretion.

         No  authority  herein  conferred  or  agreed to be  conferred  shall be
affected by, and all such authority  shall  survive,  the death or incapacity of
the undersigned.  All obligations of the undersigned  hereunder shall be binding
upon the heirs, executors,  personal and legal representatives,  administrators,
trustees in  bankruptcy,  successors and assigns of the  undersigned.  Except as
stated in the Offer to Purchase, this tender is irrevocable.

         The undersigned  understands that tenders of Shares pursuant to any one
of the procedures described in "Procedures for Tendering Shares" of the Offer to
Purchase  and in the  Instructions  hereto  will  constitute  the  undersigned's
acceptance of the terms and conditions of the Offer.  Purchaser's acceptance for
payment  of Shares  tendered  pursuant  to the Offer will  constitute  a binding
agreement  between the  undersigned  and Purchaser upon the terms and subject to
the  conditions  of the Offer.  The  undersigned  recognizes  that under certain
circumstances set forth in the Offer to Purchase,  Purchaser may not be required
to accept for payment any of the Shares tendered hereby.

         Unless otherwise  indicated herein in the box entitled "Special Payment
Instructions,"  please issue the check for the purchase  price and/or return any
certificates  evidencing  Shares not tendered or accepted  for  payment,  in the
name(s) of the registered holder(s) appearing above under "Description of Shares
Tendered."  Similarly,  unless otherwise  indicated in the box entitled "Special
Delivery  Instructions,"  please mail the check for the  purchase  price  and/or
return any certificates  evidencing  Shares not tendered or accepted for payment
(and  accompanying   documents,  as  appropriate)  to  the  address(es)  of  the
registered  holder(s) appearing above under "Description of Shares Tendered." In
the event that the box entitled "Special Payment  Instructions"  and/or "Special
Delivery  Instructions"  are completed,  please issue the check for the purchase
price and/or return any certificates for Shares not purchased or not tendered or
accepted  for payment in the name(s) of,  and/or mail such check  and/or  return
such  certificates to, the person(s) so indicated.  Unless  otherwise  indicated
herein in the box entitled  "Special  Payment  Instructions,"  please credit any
Shares tendered hereby and delivered by book-entry  transfer,  but which are not
purchased,  by  crediting  the  account  at  the  Book-Entry  Transfer  Facility
designated  above. The undersigned  recognizes that Purchaser has no obligation,
pursuant to the Special  Payment  Instructions,  to transfer any Shares from the
name of the  registered  holder(s)  thereof  if  Purchaser  does not  accept for
payment any of the Shares tendered hereby.


                                       -5-

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

             SPECIAL PAYMENT INSTRUCTIONS
       SEE INSTRUCTIONS 1, 5, 6 AND 7 OF THIS
                LETTER OF TRANSMITTAL)

  To be completed ONLY if certificates for Shares not
tendered or not purchased  and/or the check for the
purchase price of Shares purchased are to be issued in
the name of someone other than the undersigned.

Issue check and/or certificates to:

Name:
     ----------------------------------------------
                  (PLEASE PRINT)

Address:
       --------------------------------------------
                (Include Zip Code)


- ---------------------------------------------------
Taxpayer Identification or Social Security Number
(See Substitute Form W-9 on reverse)


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


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



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

              SPECIAL DELIVERY INSTRUCTIONS
        (SEE INSTRUCTIONS 1, 5, 6 AND 7 OF THIS
                  LETTER OF TRANSMITTAL)

   To be completed ONLY if certificates for Shares not
tendered  or not  purchased  and/or the check for the
purchase price of Shares  purchased are to be sent to
someone other than the undersigned, or to the undersigned
at an address other than that shown above.




Mail check and/or certificates to:

Name:
     ----------------------------------------------
                  (PLEASE PRINT)

Address:
        -------------------------------------------
                (INCLUDE ZIP CODE)



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







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



                                       -6-
<PAGE>
                      RECORD OWNERSHIP AS OF MARCH 14, 1997
                              (SEE INSTRUCTION 10)

- --------------------------------------------------------------------------------
/ /      Of the  Shares  tendered  hereby  ________  were owned of record by the
         undersigned as of the close of business on March 14, 1997.


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

- --------------------------------------------------------------------------------
                                    SIGN HERE
                    (COMPLETE SUBSTITUTE FORM W-9 ON REVERSE)

                       -----------------------------------
                           (SIGNATURE(S) OF HOLDER(S)

Dated:              , 1997

  (Must be signed by registered  holder(s) exactly as name(s) appear(s) on share
certificate(s) or on a security  position listing or by person(s)  authorized to
become registered holder(s) by certificates and documents  transmitted herewith.
If   signature   is   by   trustees,   executors,   administrators,   guardians,
attorneys-in-fact,  officers of  corporations or others acting in a fiduciary or
representative   capacity,   please  provide  the  following  information.   See
Instruction 5 of this Letter of Transmittal.)

Name(s):
        -------------------------------------------------------------------
                                 (PLEASE PRINT)

Capacity (full title):
                      -----------------------------------------------------
Address:
        -------------------------------------------------------------------
                               (INCLUDE ZIP CODE)

Area Code and Telephone Number:
                               --------------------------------------------

Tax Identification or Social Security Number:
                                             ------------------------------
                    (COMPLETE SUBSTITUTE FOR W-9 ON REVERSE)
- --------------------------------------------------------------------------------



                                       -7-
<PAGE>


- --------------------------------------------------------------------------------
                            GUARANTEE OF SIGNATURE(S)
            (SEE INSTRUCTIONS 1 AND 5 OF THIS LETTER OF TRANSMITTAL)

Authorized Signature:
                     ----------------------------------------------------

Name:
     --------------------------------------------------------------------
                                 (PLEASE PRINT)

Title:
      -------------------------------------------------------------------

Name of Firm:
             ------------------------------------------------------------

Address:
        -----------------------------------------------------------------
                               (INCLUDE ZIP CODE)


Area Code and Telephone Number:
                               ------------------------------------------

Dated:                 , 1997

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



                                       -8-
<PAGE>
                                  INSTRUCTIONS

              FORMING PART OF THE TERMS AND CONDITIONS OF THE OFFER

         1. Guarantee of Signatures.  Except as otherwise  provided  below,  all
signatures on this Letter of Transmittal must be guaranteed by a firm which is a
bank, broker, dealer, credit union, savings association, or other entity that is
a member in good standing of the Securities  Transfer Agents  Medallion  Program
(each, an "Eligible  Institution").  No signature  guarantee is required on this
Letter  of  Transmittal  (i) if this  Letter  of  Transmittal  is  signed by the
registered  holder(s) (which term, for purposes of this document,  shall include
any  participant  in the  Book-Entry  Transfer  Facility whose name appears on a
security  position listing as the owner of Shares) of Shares tendered  herewith,
unless such holder(s) has completed  either the box entitled  "Special  Delivery
Instructions"  or the  box  entitled  "Special  Payment  Instructions"  included
herein,  or (ii) if such  Shares are  tendered  for the  account of an  Eligible
Institution. See Instruction 5.

         2.  Delivery  of Letter of  Transmittal  and Share  Certificates.  This
Letter of Transmittal  is to be used either if  certificates  evidencing  Shares
("Certificates")  are to be forwarded  herewith or if Shares are to be delivered
by book-entry  transfer  pursuant to the procedure set forth in "Procedures  for
Tendering Shares" of the Offer to Purchase. Certificates evidencing all tendered
Shares,  or  confirmation  of a  book-entry  transfer  of such  Shares,  if such
procedure is available,  into the Depositary's  account at a Book-Entry Transfer
Facility  pursuant to the  procedures  set forth in  "Procedures  for  Tendering
Shares" of the Offer to Purchase,  together  with a properly  completed and duly
executed  Letter  of  Transmittal  (or  facsimile  thereof)  with  any  required
signature  guarantees  (or,  in the case of a  book-entry  transfer,  an Agent's
Message,  as defined below) and any other  documents  required by this Letter of
Transmittal,  must be received by the  Depositary  at one of its  addresses  set
forth  herein prior to the  Expiration  Date (as defined in "Terms of the Offer;
Proration;  Expiration  Date" of the Offer to  Purchase).  If  Certificates  are
forwarded to the  Depositary in multiple  deliveries,  a properly  completed and
duly executed Letter of Transmittal must accompany each such delivery.

   THE METHOD OF DELIVERY OF THIS LETTER OF  TRANSMITTAL,  CERTIFICATES  AND ALL
OTHER REQUIRED  DOCUMENTS,  INCLUDING  DELIVERY THROUGH ANY BOOK-ENTRY  TRANSFER
FACILITY, IS AT THE SOLE OPTION AND RISK OF THE TENDERING  SHAREHOLDER,  AND THE
DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY  RECEIVED BY THE DEPOSITARY.  IF
DELIVERY IS BY MAIL,  REGISTERED  MAIL WITH RETURN RECEIPT  REQUESTED,  PROPERLY
INSURED,  IS  RECOMMENDED.  IN ALL CASES,  SUFFICIENT  TIME SHOULD BE ALLOWED TO
ENSURE TIMELY DELIVERY.

         No alternative,  conditional or contingent tenders will be accepted and
no  fractional  Shares  will  be  purchased.  By  execution  of this  Letter  of
Transmittal (or a facsimile hereof), all tendering  shareholders waive any right
to receive any notice of the acceptance of their Shares for payment.

         3. Inadequate Space. If the space provided herein under "Description of
Shares Tendered" is inadequate,  the Certificate  numbers,  the number of Shares
evidenced  by such  Certificates  and the  number of Shares  tendered  should be
listed on a separate schedule and attached hereto.

         4. Partial  Tenders.  (Not  applicable  to  shareholders  who tender by
book-entry  transfer.) If fewer than all the Shares evidenced by any Certificate
delivered  to the  Depositary  herewith are to be tendered  hereby,  fill in the
number of Shares which are to be tendered in the box entitled  "Number of Shares
Tendered." In such cases,  new  Certificate(s)  evidencing  the remainder of the
Shares that were  evidenced  by the  Certificates  delivered  to the  Depositary
herewith  will be sent to the  person(s)  signing  this  Letter of  Transmittal,
unless otherwise  provided in the box entitled "Special Delivery  Instructions,"
as soon as practicable  after the  expiration or  termination of the Offer.  All
Shares  evidenced by Certificates  delivered to the Depositary will be deemed to
have been tendered unless otherwise indicated.


                                       -9-
<PAGE>
         5. Signatures on Letter of Transmittal;  Stock Powers and Endorsements.
If this  Letter of  Transmittal  is signed by the  registered  holder(s)  of the
Shares tendered  hereby,  the  signature(s)  must correspond with the name(s) as
written  on  the  face  of  the  Certificates  evidencing  such  Shares  without
alteration, enlargement or any other change whatsoever.

         If any  Shares  tendered  hereby  is  owned  of  record  by two or more
persons, all such persons must sign this Letter of Transmittal.

         If any of the Shares  tendered  hereby are  registered  in the names of
different  holders,  it will be necessary  to complete,  sign and submit as many
separate  Letters of  Transmittal as there are different  registrations  of such
certificates.

         If this Letter of Transmittal is signed by the registered  holder(s) of
the Shares  tendered  hereby,  no endorsements of Certificates or separate stock
powers are required, unless payment is to be made to, or Certificates evidencing
Shares not tendered or not  purchased  are to be issued in the name of, a person
other  than  the  registered  holder(s),   in  which  case,  the  Certificate(s)
evidencing  the Shares  tendered  hereby  must be  endorsed  or  accompanied  by
appropriate  stock powers,  in either case signed  exactly as the name(s) of the
registered  holder(s)  appear(s)  on  such  Certificate(s).  Signatures  on such
Certificate(s) and stock powers must be guaranteed by an Eligible Institution.

         If this  Letter of  Transmittal  is signed by a person  other  than the
registered holder(s) of the Shares tendered hereby, the Certificate(s)  tendered
hereby must be endorsed or accompanied by  appropriate  stock powers,  in either
case signed exactly as the name(s) of the registered holder(s) appear(s) on such
Certificate(s).  Signatures  on such  Certificate(s)  and stock  powers  must be
guaranteed by an Eligible Institution.

         If this Letter of Transmittal or any  Certificate(s)  or stock power is
signed  by  a  trustee,  executor,  administrator,  guardian,  attorney-in-fact,
officer of a corporation or other person acting in a fiduciary or representative
capacity,  such person  should so indicate  when  signing,  and proper  evidence
satisfactory  to  Purchaser  of  such  person's  authority  so to  act  must  be
submitted.

         6.  Stock  Transfer  Taxes.   Except  as  otherwise  provided  in  this
Instruction  6,  Purchaser will pay all stock transfer taxes with respect to the
sale and  transfer of any Shares to it or its order  pursuant to the Offer.  If,
however, payment of the purchase price of any Shares purchased is to be made to,
or  Certificate(s)  evidencing  Shares not tendered or not  purchased  are to be
issued in the name of, a person other than the registered holder(s),  the amount
of any stock transfer taxes (whether imposed on the registered  holder(s),  such
other  person or  otherwise)  payable on account of the  transfer  to such other
person will be deducted from the purchase price of such Shares purchased, unless
evidence  satisfactory  to Purchaser of the payment of such taxes,  or exemption
therefrom, is submitted.

         EXCEPT AS PROVIDED IN THIS  INSTRUCTION 6, IT WILL NOT BE NECESSARY FOR
TRANSFER TAX STAMPS TO BE AFFIXED TO THE  CERTIFICATE(S)  EVIDENCING  THE SHARES
TENDERED HEREBY.

         7.  Special  Payment  and  Delivery  Instructions.  If a check  for the
purchase price of any Shares tendered hereby is to be issued,  or Certificate(s)
evidencing Shares not tendered or not purchased are to be issued, in the name of
a person other than the person(s)  signing this Letter of Transmittal or if such
check or any such  Certificate is to be sent to someone other than the person(s)
signing this Letter of  Transmittal  or to the person(s)  signing this Letter of
Transmittal  but at an  address  other  than  that  shown  in the  box  entitled
"Description  of  Shares  Tendered,"  the  appropriate  boxes on this  Letter of
Transmittal must be completed. Shares tendered hereby by book-entry transfer may
request that Shares not purchased be credited to such account  maintained at the
Book-Entry  Transfer  Facility  as such  shareholder  may  designate  in the box
entitled "Special Payment Instructions" on the reverse hereof. If no


                                      -10-
<PAGE>
such  instructions  are given, all such Shares not purchased will be returned by
crediting the account at the  Book-Entry  Transfer  Facility as the account from
which such Shares were delivered.

         8.  Requests  for  Assistance  or  Additional   Copies.   Requests  for
assistance  may be  directed  to  the  Information  Agent  at  their  respective
addresses or telephone numbers set forth herein.  Additional copies of the Offer
to Purchase,  this Letter of Transmittal,  the Notice of Guaranteed Delivery and
the Guidelines for Certification of Taxpayer Identification Number on Substitute
Form W-9 may be obtained from the  Information  Agent or from brokers,  dealers,
commercial banks or trust companies.

         9.  Substitute  Form W-9.  Each  tendering  shareholder  is required to
provide the Depositary with a correct Taxpayer  Identification Number ("TIN") on
the  Substitute  Form W-9 which is provided under  "Important  Tax  Information"
below, and to certify,  under penalties of perjury,  that such number is correct
and that such shareholder is not subject to backup withholding of federal income
tax. If a  tendering  shareholder  has been  notified  by the  Internal  Revenue
Service that such shareholder is subject to backup withholding, such shareholder
must cross out item (2) of the  Certification  box of the  Substitute  Form W-9,
unless such  shareholder has since been notified by the Internal Revenue Service
that such  shareholder  is no longer subject to backup  withholding.  Failure to
provide the  information  on the  Substitute  Form W-9 may subject the tendering
shareholder to 31% federal income tax withholding on the payment of the purchase
price  of  all  Shares  purchased  from  such  shareholder.   If  the  tendering
shareholder  has not been  issued a TIN and has  applied  for one or  intends to
apply for one in the near future, such shareholder should write "Applied For" in
the space  provided for the TIN in Part I of the  Substitute  Form W-9, and sign
and date the Substitute  Form W-9. If "Applied For" is written in Part I and the
Depositary  is not  provided  with a TIN  within 60 days,  the  Depositary  will
withhold 31% on all payments of the purchase price to such  shareholder  until a
TIN is provided to the Depositary.

         10.  Record  Ownership of Shares as of March 14, 1997. If the statement
therein is applicable,  a tendering stockholder should check the box next to the
statement contained in the box entitled "Record Ownership as of March 14, 1997,"
and the statement so specified  should be accurate and correct.  However,  it is
not  necessary  to check  that box in order for  Shares to be duly and  properly
tendered.  Shareholders  who own shares  both as of and after the March 14, 1997
record date for the Company's Annual Meeting (in particular,  brokers,  dealers,
commercial  banks and other  nominees)  are  advised  to check the box  entitled
"Record Ownership as of March 14, 1997" and fill in the blank with the number of
Shares  being  tendered  which were owned as of March 14,  1997.  The failure to
follow this procedure will not,  however,  affect the validity of any tender, as
this is for informational purposes only.

         11.  Lost,  Destroyed  or Stolen  Certificates.  If any  certificate(s)
representing  Shares has been lost,  destroyed or stolen, the shareholder should
promptly  notify the Depositary.  The shareholder  will then be instructed as to
the steps that must be taken in order to replace the certificate(s). This Letter
of Transmittal  and related  documents  cannot be processed until the procedures
for replacing lost or destroyed certificates have been followed.

         IMPORTANT:  THIS LETTER OF TRANSMITTAL (OR A MANUALLY SIGNED  FACSIMILE
HEREOF),  PROPERLY  COMPLETED  AND DULY  EXECUTED,  WITH ANY REQUIRED  SIGNATURE
GUARANTEES,   OR  AN  AGENT'S  MESSAGE  (TOGETHER  WITH  SHARE  CERTIFICATES  OR
CONFIRMATION  OF BOOK-ENTRY  TRANSFER AND ALL OTHER REQUIRED  DOCUMENTS) MUST BE
RECEIVED BY THE DEPOSITARY PRIOR TO THE EXPIRATION DATE (AS DEFINED IN THE OFFER
TO PURCHASE).


                                      -11-
<PAGE>
                            IMPORTANT TAX INFORMATION

         Under the federal income tax law, a shareholder  whose tendered  Shares
are accepted for payment is required by law to provide the Depositary (as payer)
with such  shareholder's  correct  TIN on  Substitute  Form W-9  below.  If such
shareholder  is an individual,  the TIN is such  shareholder's  social  security
number.  If the Depositary is not provided with the correct TIN, the shareholder
may be subject to a $50 penalty  imposed by the  Internal  Revenue  Service.  In
addition,  payments  that are made to such  shareholder  with  respect to Shares
purchased pursuant to the Offer may be subject to backup withholding of 31%.

         Certain  shareholders  (including,  among others,  all corporations and
certain  foreign  individuals)  are not subject to these backup  withholding and
reporting  requirements.  In order for a foreign  individual  to  qualify  as an
exempt  recipient,  such  individual  must  submit  a  statement,  signed  under
penalties of perjury,  attesting to such  individual's  exempt status.  Forms of
such statements can be obtained from the Depositary. See the enclosed Guidelines
for Certification of Taxpayer  Identification  Number on Substitute Form W-9 for
additional instructions.

         If backup  withholding  applies  with  respect  to a  shareholder,  the
Depositary is required to withhold 31% of any payments made to such shareholder.
Backup  withholding  is not an  additional  tax.  Rather,  the tax  liability of
persons  subject  to backup  withholding  will be  reduced  by the amount of tax
withheld.  If  withholding  results in an  overpayment of taxes, a refund may be
obtained from the Internal Revenue Service.

PURPOSE OF SUBSTITUTE FORM W-9

         To  prevent  backup   withholding  on  payments  that  are  made  to  a
shareholder  with  respect  to  Shares  purchased  pursuant  to the  Offer,  the
shareholder is required to notify the Depositary of such  shareholder's  correct
TIN by  completing  the form  below  certifying  (a) that  the TIN  provided  on
Substitute Form W-9 is correct (or that such shareholder is awaiting a TIN), and
(b) that (i) such  shareholder  has not been  notified by the  Internal  Revenue
Service that such shareholder is subject to backup  withholding as a result of a
failure to report all interest or dividends or (ii) the Internal Revenue Service
has notified such  shareholder  that such  shareholder  is no longer  subject to
backup withholding.

WHAT NUMBER TO GIVE THE DEPOSITARY

         The  shareholder is required to give the Depositary the social security
number or  employer  identification  number of the  record  holder of the Shares
tendered hereby.  If the Shares are in more than one name or are not in the name
of the actual  owner,  consult the  enclosed  Guidelines  for  Certification  of
Taxpayer Identification Number on Substitute Form W-9 for additional guidance on
which number to report.  If the tendering  shareholder has not been issued a TIN
and has  applied  for a number  or  intends  to apply  for a number  in the near
future, the shareholder should write "Applied For" in the space provided for the
TIN in Part I, and sign and date the  Substitute  Form W-9. If "Applied  For" is
written in Part I and the  Depositary is not provided with a TIN within 60 days,
the  Depositary  will withhold 31% of all payments of the purchase price to such
shareholder until a TIN is provided to the Depositary.


                                      -12-
<PAGE>
<TABLE>
<CAPTION>


- ------------------------------------------------------------------------------------------------------------------------------
                                PAYER'S NAME: HARRIS TRUST COMPANY OF NEW YORK, AS DEPOSITARY
- ------------------------------------------------------------------------------------------------------------------------------
<S>                                <C>                                                        <C>    
SUBSTITUTE                         PART I--PLEASE PROVIDE YOUR TIN IN THE BOX AT               ----------------------
FORM W-9                           RIGHT AND CERTIFY BY SIGNING AND DATING BELOW.              Social Security Number
Department of the Treasury                                                                               OR
Internal Revenue Service
                                                                                               -----------------------
                                                                                               Employer Identification
                                                                                                       Number

                                                                                               (If awaiting TIN write
                                                                                                   "Applied For")
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>
Payer's Request for  PART II--For Payees Exempt From Backup Withholding, see 
  Taxpayer                    the enclosed Guidelines and complete as 
  Identification              instructed therein.
  Number (TIN)
                     CERTIFICATION--Under penalties of perjury, I certify that:

                                    (1)      The number shown on this form is my
                                             correct   Taxpayer   Identification
                                             Number      (or     a      Taxpayer
                                             Identification  Number has not been
                                             issued to me and  either (a) I have
                                             mailed or delivered an  application
                                             to      receive     a      Taxpayer
                                             Identification    Number   to   the
                                             appropriate     Internal    Revenue
                                             Service  ("IRS") or Social Security
                                             administration   office  or  (b)  I
                                             intend  to  mail  or   deliver   an
                                             application  in the near future.  I
                                             understand that if I do not provide
                                             a  Taxpayer  Identification  Number
                                             within sixty (60) days,  31% of all
                                             reportable   payments  made  to  me
                                             thereafter will be withheld until I
                                             provide a number), and

                                    (2)      I  am   not   subject   to   backup
                                             withholding because (a) I am exempt
                                             from backup withholding, (b) I have
                                             not been notified by the IRS that I
                                             am subject to backup withholding as
                                             a result of  failure  to report all
                                             interest  or  dividends  or (c) the
                                             IRS  has  notified  me that I am no
                                             longer     subject     to    backup
                                             withholding.

                     CERTIFICATE INSTRUCTIONS--You must cross out item (2) above
                     if you have been  notified  by the IRS that you are subject
                     to backup  withholding  because of under reporting interest
                     or  dividends on your tax return.  However,  if after being
                     notified  by the  IRS  that  you  were  subject  to  backup
                     withholding you received another  notification from the IRS
                     that you are no longer  subject to backup  withholding,  do
                     not  cross  out item (2).  (Also  see  instructions  in the
                     enclosed Guidelines.)

- --------------------------------------------------------------------------------
SIGNATURE:                                DATE:                 , 1997
- --------------------------------------------------------------------------------


NOTE:    FAILURE  TO  COMPLETE  AND  RETURN  THIS  FORM  MAY  RESULT  IN  BACKUP
         WITHHOLDING  OF 31% OF ANY PAYMENTS  MADE TO YOU PURSUANT TO THE OFFER.
         PLEASE REVIEW THE ENCLOSED  GUIDELINES  FOR  CERTIFICATION  OF TAXPAYER
         IDENTIFICATION NUMBER ON SUBSTITUTE FORM W-9 FOR ADDITIONAL DETAILS.

         Questions and requests for assistance or additional copies of the Offer
to Purchase,  Letter of  Transmittal  and other tender  offer  materials  may be
directed to the Information Agent set forth below:

                     The Information Agent for the Offer is:

                            GEORGESON & COMPANY INC.

                                Wall Street Plaza
                            New York, New York 10005
                           (800) 223-2064 (Toll-Free)
                Banks and Brokers Call: (212) 440-9800 (Collect)




                                      -13-

                           OFFER TO PURCHASE FOR CASH
                              UP TO 649,000 SHARES
                                       OF
                 COMMON STOCK (INCLUDING THE ASSOCIATED RIGHTS)
                                       OF

                         DYNAMICS CORPORATION OF AMERICA

                                       AT

                                $45 NET PER SHARE
                                       by

                              SB ACQUISITION CORP.
                          A WHOLLY OWNED SUBSIDIARY OF
                                 WHX CORPORATION

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


         THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT,
                               NEW YORK CITY TIME
            ON TUESDAY, APRIL 29, 1997 UNLESS THE OFFER IS EXTENDED.

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


                                                                  April 10, 1997
To Brokers, Dealers, Commercial Banks,
  Trust Companies and Other Nominees:

         We are asking you to contact  your  clients for whom you hold shares of
common stock, par value $.10 per share (the "Shares"),  of Dynamics  Corporation
of  America,  a New York  corporation  (the  "Company").  Please  bring to their
attention as promptly as possible the offer being made by SB Acquisition  Corp.,
a New York  corporation  ("Purchaser")  and a  wholly  owned  subsidiary  of WHX
Corporation,  a  Delaware  corporation  ("Parent"),  to  purchase  up to 649,000
Shares, including the associated Common Stock Purchase Rights issued pursuant to
the Rights  Agreement,  dated as of January 30, 1986, as amended on December 27,
1995, between the Company and First National Bank of Boston, as Rights Agent, at
a price of $45 per Share,  net to the seller in cash,  without  interest thereon
(the "Offer  Price"),  upon the terms and subject to the conditions set forth in
the Offer to  Purchase,  dated  March 31,  1997 (the  "Offer to  Purchase"),  as
amended and  supplemented by the Supplement  thereto,  dated April 10, 1997 (the
"Supplement")  and the related  Letters of Transmittal  (which,  as amended from
time to time, together constitute the "Offer") enclosed herewith.

         For your  information  and for  forwarding to your clients for whom you
hold Shares registered in your name or in the name of your nominee,  or who hold
Shares registered in their own names, we are enclosing the following documents:

         1.       Offer to Purchase, dated March 31, 1997;

         2.       Supplement, dated April 10, 1997;

         3.       Revised  Letter of Transmittal to be used by holders of shares
                  in  accepting  the  Offer.  Facsimile  copies of the Letter of
                  Transmittal may be used to accept the Offer;

         4.       A letter which may be sent to your clients for whose  accounts
                  you hold Shares registered in your name or in the name of your
                  nominees,  with space  provided for  obtaining  such  clients'
                  instructions with regard to the Offer;

         5.       Guidelines of the Internal  Revenue Service for  Certification
                  of Taxpayer Identification Number on Substitute Form W-9; and

         6.       Return envelope addressed to the Depositary.

<PAGE>
         No tenders pursuant to guaranteed delivery will be accepted. The (gray)
Notice of Guaranteed Delivery  previously  circulated with the Offer to Purchase
should be discarded.

         We are asking  you to contact  your  clients  for whom you hold  Shares
registered  in your  name (or in the name of your  nominee)  or who hold  Shares
registered  in their own names.  Please  bring the Offer to their  attention  as
promptly as possible.  The Purchaser will not pay any fees or commissions to any
broker or dealer or any other  person  (other  than the  Information  Agent) for
soliciting  tenders of Shares  pursuant to the Offer.  You will be reimbursed by
the Purchaser for customary  mailing expenses  incurred by you in forwarding any
of the enclosed materials to your clients. The Purchaser will pay or cause to be
paid any stock  transfer  taxes payable on the sale and transfer of Shares to it
or its order,  except as otherwise  provided in  Instruction  6 of the Letter of
Transmittal.

         YOUR PROMPT ACTION IS REQUESTED. WE URGE YOU TO CONTACT YOUR CLIENTS AS
PROMPTLY  AS  POSSIBLE.  THE OFFER AND  WITHDRAWAL  RIGHTS  WILL EXPIRE AT 12:00
MIDNIGHT,  EASTERN  TIME,  ON  TUESDAY,  APRIL  29,  1997,  UNLESS  THE OFFER IS
EXTENDED.

         In  order to take  advantage  of the  Offer,  (1) a duly  executed  and
properly completed Letter of Transmittal,  and, if necessary, any other required
documents  should  be  sent  to  the  Depositary  and  (2)  either  certificates
representing the tendered Shares should be delivered to the Depositary,  or such
Shares should be tendered by book-entry  transfer into the Depositary's  account
at one of the  book-entry  transfer  facilities  (as  defined  in the  Offer  to
Purchase),  all in accordance with the  Instructions  set forth in the Letter of
Transmittal, the Offer to Purchase and the Supplement.

         Any  inquiries  you may  have  with  respect  to the  Offer  should  be
addressed to the  Information  Agent at the address and telephone  number as set
forth on the back cover page of the Offer to Purchase or the Supplement.

         Additional  copies  of the above  documents  may be  obtained  from the
Information  Agent,  at the address and  telephone  number set forth on the back
cover of the Offer to Purchase or the Supplement.

Very truly yours,


SB ACQUISITION CORP.



         NOTHING CONTAINED HEREIN OR IN THE ENCLOSED  DOCUMENTS SHALL CONSTITUTE
YOU OR ANY OTHER PERSON AS AN AGENT OF PARENT,  PURCHASER, THE DEPOSITARY OR THE
INFORMATION AGENT OR ANY AFFILIATE OF ANY OF THE FOREGOING,  OR AUTHORIZE YOU OR
ANY OTHER PERSON TO USE ANY  DOCUMENT OR MAKE ANY  STATEMENT ON BEHALF OF ANY OF
THEM IN  CONNECTION  WITH THE OFFER OTHER THAN THE  DOCUMENTS  ENCLOSED  AND THE
STATEMENTS CONTAINED THEREIN.


                                       -2-




                           OFFER TO PURCHASE FOR CASH
                              UP TO 649,000 SHARES
                                       OF
                                  COMMON STOCK
                        (INCLUDING THE ASSOCIATED RIGHTS)
                                       OF

                         DYNAMICS CORPORATION OF AMERICA

                                       AT

                                $45 NET PER SHARE
                                       by

                              SB ACQUISITION CORP.
                          A WHOLLY OWNED SUBSIDIARY OF
                                 WHX CORPORATION

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


         THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT,
                               NEW YORK CITY TIME
            ON TUESDAY, APRIL 29, 1997 UNLESS THE OFFER IS EXTENDED.

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


                                                                  April 10, 1997
To Our Clients:

         Enclosed for your  consideration  is an Offer to Purchase,  dated March
31,  1997  (the  "Offer  to  Purchase"),  as  amended  and  supplemented  by the
Supplement  thereto,  dated  April 10, 1997 (the  "Supplement")  and the related
Letters of Transmittal (which, as amended from time to time, together constitute
the "Offer") in connection  with the Offer by SB  Acquisition  Corp., a New York
corporation  ("Purchaser")  and a wholly owned subsidiary of WHX Corporation,  a
Delaware  corporation  ("Parent"),  to purchase  up to 649,000  shares of common
stock,  par value $.10 per share  (the  "Shares")  of  Dynamics  Corporation  of
America, a New York corporation (the "Company"), including the associated Common
Stock  Purchase  Rights  issued  pursuant to the Rights  Agreement,  dated as of
January 30, 1986, as amended on December 27, 1995, between the Company and First
National Bank of Boston,  as Rights Agent,  at a price of $45 per Share,  net to
the seller in cash, without interest thereon,  upon the terms and subject to the
conditions set forth in the Offer.

         THE  MATERIAL  IS BEING SENT TO YOU AS THE  BENEFICIAL  OWNER OF SHARES
HELD BY US FOR YOUR ACCOUNT BUT NOT  REGISTERED  IN YOUR NAME. WE ARE THE HOLDER
OF RECORD OF SHARES HELD BY US FOR YOUR ACCOUNT.  A TENDER OF SUCH SHARES CAN BE
MADE ONLY BY US AS THE HOLDER OF RECORD AND PURSUANT TO YOUR  INSTRUCTIONS.  THE
LETTER OF TRANSMITTAL IS FURNISHED TO YOU FOR YOUR  INFORMATION  ONLY AND CANNOT
BE USED BY YOU TO TENDER SHARES HELD BY US FOR YOUR ACCOUNT.

         We request  instructions  as to  whether  you wish to have us tender on
your behalf any or all of the Shares held by us for your account, upon the terms
and subject to the conditions set forth in the Offer.

         Your attention is invited to the following:

         1.   The tender price is $45 per Share, net to the seller in cash.

         2.   The Offer,  and withdrawal  rights will expire at 12:00  Midnight,
              New York City time, on Tuesday,  April 29, 1997,  unless the Offer
              is extended.

         3.   The Offer is being made for up to 17% of the outstanding Shares.


<PAGE>
         4.   The Offer is  conditioned  upon,  among  other  things,  there not
              having been entered into or effectuated  any  agreements  with any
              person impairing the Purchaser's ability to acquire the Company or
              otherwise diminish the expected economic value to Purchaser of the
              acquisition of the Company.

         5.   Tendering shareholders will not be obligated to pay brokerage fees
              or  commissions  or,  except as set forth in  Instruction 6 of the
              Letter of  Transmittal,  stock  transfer  taxes on the purchase of
              Shares by Purchaser pursuant to the Offer.

         The Offer is made solely by the Offer to Purchase,  the  Supplement and
the related  Letters of Transmittal  and is being made to all holders of Shares.
Purchaser is not aware of any state where the making of the Offer is  prohibited
by  administrative  or judicial action  pursuant to any valid state statute.  If
Purchaser becomes aware of any valid state statute prohibiting the making of the
Offer or the acceptance of Shares pursuant  thereto,  Purchaser will make a good
faith  effort to comply  with such  state  statute.  If,  after  such good faith
effort,  Purchaser cannot comply with such state statute,  the Offer will not be
made to (nor will  tenders  be  accepted  from or on behalf  of) the  holders of
Shares in such state.  In any  jurisdiction  where the  securities,  blue sky or
other  laws  require  the Offer to be made by a licensed  broker or dealer,  the
Offer shall be deemed to be made on behalf of Purchaser  by the Dealer  Managers
or one or more  registered  brokers or dealers  licensed  under the laws of such
jurisdiction.

         If you wish to have us  tender  any or all of your  Shares,  please  so
instruct us by completing,  executing and returning to us the  instruction  form
contained in this letter. An envelope in which to return your instructions to us
is enclosed. If you authorize the tender of your Shares, all such Shares will be
tendered unless  otherwise  specified on the instruction  form set forth in this
letter.  YOUR INSTRUCTIONS  SHOULD BE FORWARDED TO US IN AMPLE TIME TO PERMIT US
TO SUBMIT A TENDER ON YOUR BEHALF PRIOR TO THE EXPIRATION OF THE OFFER.


                                       -2-

<PAGE>
                     INSTRUCTIONS WITH RESPECT TO THE OFFER
                       TO PURCHASE FOR CASH UP TO 649,000
            SHARES OF COMMON STOCK (INCLUDING THE ASSOCIATED RIGHTS)
                                       OF
                         DYNAMICS CORPORATION OF AMERICA

         The  undersigned  acknowledge(s)  receipt of your letter,  the enclosed
Offer to Purchase,  dated March 31,  1997,  as amended and  supplemented  by the
Supplement thereto,  dated April 10, 1997 and the related Letters of Transmittal
(which,  as amended from time to time,  together  constitute  the  "Offer"),  in
connection  with  the  offer by SB  Acquisition  Corp.,  a New York  corporation
("Purchaser")  and a wholly  owned  subsidiary  of WHX  Corporation,  a Delaware
corporation,  to purchase up to 649,000  shares of common stock,  par value $.10
per  share  (the  "Shares")  of  Dynamics  Corporation  of  America,  a New York
corporation,  including  the  associated  Common Stock  Purchase  Rights  issued
pursuant to the Rights  Agreement,  dated as of January 30, 1986,  as amended on
December 27, 1995,  between the Company and First  National  Bank of Boston,  as
Rights Agent,  at a price of $45 per Share,  net to the seller in cash,  without
interest thereon,  upon the terms and subject to the conditions set forth in the
Offer.

         This will  instruct  you to tender to  Purchaser  the  number of Shares
indicated  below (or,  if no number is  indicated  in either  appropriate  space
below,  all  Shares)  held by you for the account of the  undersigned,  upon the
terms and subject to the conditions set forth in the Offer.

                        NUMBER OF SHARES TO BE TENDERED:*


________________Shares

Account Number:    _______________


Dated: _____________, 1997
                                                      SIGN HERE
                                        ----------------------------------------


                                        ----------------------------------------
                                                     Signature(s)



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


                                        ----------------------------------------
                                             Please Type or Print Name(s)


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


                                        ----------------------------------------
                                                Please Type or Print
                                                  Address(es) Here


                                        ----------------------------------------
                                            Area Code and Telephone Number


                                        ----------------------------------------
                                               Taxpayer Identification or
                                               Social Security Number(s)

- --------
*        Unless otherwise indicated, it will be assumed that all Shares held
         by us for your account are to be tendered.


                                       -3-



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