KIEWIT PETER SONS INC
SC 13E4, 1995-08-30
METAL CANS
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<PAGE>
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             ----------------------

                                 SCHEDULE 13E-4
                          ISSUER TENDER OFFER STATEMENT
   (PURSUANT TO SECTION 13 (E) (1) OF THE SECURITIES AND EXCHANGE ACT OF 1934)

                            PETER KIEWIT SONS', INC.
                                (NAME OF ISSUER)

                            PETER KIEWIT SONS', INC.
                      (NAME OF PERSON(S) FILING STATEMENT)

                 CLASS B CONSTRUCTION & MINING GROUP NONVOTING
                RESTRICTED REDEEMABLE CONVERTIBLE EXCHANGEABLE
                   COMMON STOCK, PAR VALUE $0.0625 PER SHARE,
                      CLASS C CONSTRUCTION & MINING GROUP
                 RESTRICTED REDEEMABLE CONVERTIBLE EXCHANGEABLE
                   COMMON STOCK, PAR VALUE $0.0625 PER SHARE,
             1990 SERIES CONVERTIBLE DEBENTURES DUE OCTOBER 31, 2000,
             1991 SERIES CONVERTIBLE DEBENTURES DUE OCTOBER 31, 2001
       AND 1993 SERIES CLASS D CONVERTIBLE DEBENTURES DUE OCTOBER 31, 2003
                         (TITLE OF CLASS OF SECURITIES)

                                    _________
                      (CUSIP NUMBER OF CLASS OF SECURITIES)

                            MATTHEW J. JOHNSON, ESQ.
                            PETER KIEWIT SONS', INC.
                                1000 KIEWIT PLAZA
                              OMAHA, NEBRASKA 68131
                                 (402) 342-2052
            (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON AUTHORIZED
                 TO RECEIVE NOTICES AND COMMUNICATIONS ON BEHALF
                       OF THE PERSON(S) FILING STATEMENT)


                                    COPY TO:


                              JAMES D. DARROW, ESQ.
                           SUTHERLAND, ASBILL & BRENNAN
                           1275 PENNSYLVANIA AVE., N.W.
                             WASHINGTON, D.C. 20004
                                 (202) 383-0100


                                AUGUST 30, 1995
               (DATE TENDER OFFER FIRST PUBLISHED, SENT OR GIVEN
                              TO SECURITY HOLDERS)
                           ---------------------------

                            CALCULATION OF FILING FEE
- -------------------------------------------------------------------------------
TRANSACTION VALUATION: $216,350,000(1)            AMOUNT OF FILING FEE: $43,270
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/X/  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:  $44,311        Filing Party:  Peter Kiewit Sons', Inc.
Form or Registration No.:               Date Filed:  July 11, 1995
Registration Statement on
Form S-4 of Peter Kiewit Sons', Inc. and MFS Communications, Inc.
(No. 33-60977)

- ------------------
(1)  Estimated solely for purposes of calculating the filing fee and computed
     pursuant to Rule 0-11(a)(4) of the Securities Exchange Act of 1934, as
     amended.  This amount assumes the acquisition by Peter Kiewit Sons', Inc.
     of all of the Exchangeable Debentures, based on the face amount thereof,
     and a maximum of 8,500,000 shares of Class B Common Stock and Class C
     Common Stock, based on a book value of $25.10 per share.
- -------------------------------------------------------------------------------

<PAGE>

ITEM 1.   SECURITY AND ISSUER

     (a)  The Issuer of the securities to which this Issuer Tender Offer
Statement on Schedule 13E-4 (the "Statement") relates is Peter Kiewit Sons',
Inc., a Delaware Corporation ("PKS"), and the address of its principal
executive office is 1000 Kiewit Plaza, Omaha, Nebraska  68131.

     (b)  This Statement relates to an offer by PKS to exchange (i) .416598
of a share of PKS Class D Diversified Group Convertible Exchangeable Common
Stock, par value $0.0625 per share ("Class D Stock") for each share of PKS
Class B Construction & Mining Group Nonvoting Restricted Redeemable
Convertible Exchangeable Common Stock, par value $0.0625 per share ("Class B
Stock"), and each share of PKS Class C Construction & Mining Group Restricted
Redeemable Convertible Exchangeable Common Stock, par value $0.0625 per share
("Class C Stock"), including all shares of Class C Stock issued in exchange for
Debentures (as described below), up to a maximum of 8,500,000 shares of Class B
Stock and Class C Stock, in the aggregate, (ii) 24.75 shares of Class C Stock
and 24.75 shares of Class D Stock for each $1,000 in principal amount of each
outstanding 1990 Series Convertible Debenture of PKS due October 31, 2000 and
convertible into Class C Stock and Class D Stock, (iii) 22.98 shares of Class C
Stock and 22.98 shares of Class D Stock for each $1,000 in principal amount of
each outstanding 1991 Series Convertible Debenture of PKS due October 31, 2001
and convertible into Class C Stock and Class D Stock and (iv) 19.97 shares of
Class D Stock for each $1,000 in principal amount of each outstanding 1993
Series Convertible Debenture of PKS due October 31, 2002 and convertible into
shares of Class D Stock (all such Convertible Debentures are collectively
referred to as the "Exchangeable Debentures"), validly tendered and not properly
withdrawn, upon the terms and subject to the conditions set forth in the
Prospectus, dated August 30, 1995 (the "Prospectus"), the form of which is
attached hereto as Exhibit 99.1, and in the related Letter of Transmittal (the
"Letter of Transmittal"), the form of which is attached hereto as Exhibit 99.2
(which together constitute the "Exchange Offer").  For purposes of this
Statement, the Class B Stock and the Class C Stock are referred to collectively
as the Exchangeable Stock.  The information set forth on the front cover page of
the Prospectus and in the sections thereof entitled "Prospectus Summary - The
Exchange Offer," "Overview - The Exchange Offer," "The Exchange Offer - Terms
of the Exchange Offer" and "Certain Transactions - Intentions of Certain
Significant Stockholders Regarding Participation in the Exchange Offer" is
incorporated herein by reference.

     (c)  There is no currently established trading market for the
Exchangeable Stock.  The information set forth in the section of the Prospectus
entitled "Selected Historical and Pro Forma Financial Data of Kiewit
Construction & Mining Group" and "Description of Securities - PKS Stock -
Ownership and Transfer Restrictions" is incorporated herein by reference.

     (d)  This Statement is being filed by the Issuer.

ITEM 2.   SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

<PAGE>

     (a)  The consideration for the purchase of the maximum amount of
Exchangeable Stock for which the Exchange Offer is being made (including shares
of Class C Stock issued in exchange for Exchangeable Debentures) consists of
3,541,083 shares of Class D Stock.  The information set forth in the sections
of the Prospectus entitled "Overview - The Exchange Offer" and "The Exchange
Offer - Terms of the Exchange Offer" is incorporated herein by reference.

     (b)  Not applicable.

ITEM 3.   PURPOSE OF THE TENDER OFFER AND PLANS OR PROPOSALS OF THE ISSUER
          OR AFFILIATE

     (a)-(c)        The information set forth in the sections of the
Prospectus entitled "Prospectus Summary - Purpose of the Exchange Offer,"
"Prospectus Summary - The Spin-off," "Overview - Background and Purpose of the
Spin-off; Purpose of the Exchange Offer; Board Proceedings," "The Exchange
Offer - Terms of the Exchange Offer," "The Spin-off" and "Certain Transactions
- - Certain Agreement Between PKS and MFS" is incorporated herein by reference.

     (d)-(e)        Not applicable.

     (f)  The information set forth in the sections of the Prospectus
entitled "Prospectus Summary - The Spin-off," "Overview - The Spin-off" and
"The Spin-off" is incorporated herein by reference.

     (g)-(j)        Not applicable.

ITEM 4.   INTEREST IN SECURITIES OF THE ISSUER

     On July 12, 1995 and July 19, 1995, PKS repurchased 700 shares of
Class C Stock, in the aggregate, pursuant to its repurchase obligations under
the PKS Certificate of Incorporation.  The information set forth in the
section of the Prospectus entitled "Description of Securities - PKS Stock -
Repurchase Duties" is incorporated herein by reference.

ITEM 5.   CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH
          RESPECT TO THE ISSUER'S SECURITIES

     The information set forth in the section of the Prospectus entitled
"Certain Transactions - Intentions of Certain Significant Stockholders
Regarding Participation in the Exchange Offer" is incorporated herein by
reference.

ITEM 6.   PERSONS RETAINED, EMPLOYED OR TO BE COMPENSATED

     The information set forth in the section of the Prospectus entitled
"Overview - Background and Purpose of the Spin-off; Purpose of the Exchange
Offer; Board Proceedings - Opinions of Financial Advisors" is incorporated
herein by reference.

ITEM 7.   FINANCIAL INFORMATION

     (a)  The information set forth in the sections of the Prospectus
entitled "Summary Historical and Pro Forma Financial Data of Peter Kiewit
Sons', Inc.,"

<PAGE>


"Summary Historical and Pro Forma Financial Data of Kiewit Construction &
Mining Group," "Summary Historical and Pro Forma Financial Data of Kiewit
Diversified Group," and "Selected Historical and Pro Forma Financial Data of
Peter Kiewit Sons', Inc., Kiewit Construction & Mining Group and Kiewit
Diversified Group" is incorporated herein by reference.

     (b)  The information set forth in the section of the Prospectus
entitled "Pro Forma Financial Information" is incorporated herein by
reference.

ITEM 8.   ADDITIONAL INFORMATION

     (a)  The information set forth in the sections of the Prospectus
entitled "Certain Transactions - Intentions of Certain Significant
Stockholders Regarding Participation in the Exchange Offer" and "Certain
Transactions - Certain Agreements Between PKS and MFS" is incorporated herein by
reference.

     (b)-(c)        Not applicable.

     (d)  There are no material pending legal proceedings relating to the
Exchange Offer.

     (e)  Reference is made hereby to the Prospectus and the related Letter
of Transmittal, copies of which are attached hereto as Exhibits 99.1 and 99.2,
respectively, and incorporated herein by reference in their entirety.  PKS is
not aware of any jurisdiction in which the making of the Exchange Offer or the
acceptance thereof would not be in compliance with applicable law.  However,
PKS reserves the right to exclude holders in any jurisdiction in which it is
asserted that the Exchange Offer cannot lawfully be made.  So long as PKS
makes a good faith effort to comply with any state law deemed applicable to
the Exchange Offer, if it cannot do so, PKS believes that the exclusion of
holders residing in such state(s) is permitted under Rule 13e-4(f)(9)
promulgated under the Securities Exchange Act of 1934, as amended.



<PAGE>

ITEM 9.  MATERIAL TO BE FILED AS EXHIBITS.


(a)
Exhibit 99.1   Prospectus, dated August 30, 1995.
Exhibit 99.2   Form of Letter of Transmittal sent to holders of Class B Stock.
Exhibit 99.3   Form of Letter of Transmittal sent to holders of Class C Stock.
Exhibit 99.4   Form of Letter of Transmittal sent to holders of Exchangeable
               Debentures.
(b)            Not applicable.
(c)
Exhibit 99.5   Form of written understanding between certain securityholders
               and PKS.
(d)            Not applicable.
(e)            Prospectus, dated August 30, 1995 (see Exhibit 99.1 above).
(f)            Not applicable.

                                        4

<PAGE>
                                   SIGNATURES

     After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Dated August 29, 1995
                                   PETER KIEWIT SONS', INC.

                                   By:  /S/ Robert E. Julian
                                        -------------------------
                                        Robert E. Julian
                                        Executive Vice President -
                                        Chief Financial Officer

                                        5




<PAGE>
JOINT PROSPECTUS
- ---------------------

                            PETER KIEWIT SONS', INC.

                               OFFER TO EXCHANGE
       (i) CLASS D STOCK FOR OUTSTANDING CLASS B STOCK AND CLASS C STOCK,
  (ii) CLASS C STOCK AND CLASS D STOCK FOR 1990 SERIES CONVERTIBLE DEBENTURES
DUE OCTOBER 31, 2000 AND 1991 SERIES CONVERTIBLE DEBENTURES DUE OCTOBER 31, 2001
                                      AND
 (iii) CLASS D STOCK FOR 1993 SERIES CLASS D CONVERTIBLE DEBENTURES DUE OCTOBER
                                    31, 2003

               DIVIDEND DISTRIBUTION BY PETER KIEWIT SONS', INC.
                        TO THE HOLDERS OF CLASS D STOCK
                                       OF
                       40,091,644 SHARES OF COMMON STOCK
                                      AND
           15,000,000 SHARES OF SERIES B CONVERTIBLE PREFERRED STOCK
                                       OF
                        MFS COMMUNICATIONS COMPANY, INC.

    The  Exchange  Offer  described  herein will  expire  at  5:00  p.m., Omaha,
Nebraska time, on September 29, 1995, unless extended.

    Peter Kiewit Sons', Inc., a  Delaware corporation ("PKS" or the  "Company"),
hereby  offers  to  exchange  (i)  shares  of  its  Class  D  Diversified  Group
Convertible Exchangeable Common  Stock, par  value $0.0625 per  share ("Class  D
Stock")  for any and all outstanding shares of its Class B Construction & Mining
Group Nonvoting Restricted Redeemable Convertible Exchangeable Common Stock, par
value $0.0625 per  share ("Class  B Stock") and  Class C  Construction &  Mining
Group  Restricted Redeemable  Convertible Exchangeable  Common Stock,  par value
$0.0625 per share ("Class C  Stock"), (ii) shares of Class  C Stock and Class  D
Stock  for any and  all of PKS's outstanding  1990 Series Convertible Debentures
due October 31, 2000 and 1991 Series Convertible Debentures due October 31, 2001
(such shares  of Class  C Stock  will then  be exchangeable  for Class  D  Stock
pursuant  to the Exchange Offer)  and (iii) shares of Class  D Stock for any and
all of PKS's outstanding 1993 Series Class D Convertible Debentures due  October
31, 2003, all on the terms and subject to the conditions set forth herein and in
the  related  Letter of  Transmittal  (which together  constitute  the "Exchange
Offer"). For a discussion of certain tax consequences of the Exchange Offer, see
"The Exchange Offer -- Certain  United States Federal Income Tax  Considerations
Relating  to the  Exchange Offer." The  Class C Stock  and the Class  D Stock so
offered in the Exchange Offer are  sometimes referred to collectively herein  as
the  "Offered Stock," PKS's convertible debentures described above are sometimes
referred to collectively herein  as the "Exchangeable  Debentures," the Class  B
Stock  and Class C  Stock are sometimes  collectively referred to  herein as the
"Exchangeable Stock," and the Exchangeable Debentures and the Exchangeable Stock
are sometimes referred to collectively herein as the "Exchangeable  Securities."
See "Certain Definitions" for definitions of certain other terms used herein.

    This  Joint Prospectus (the "Prospectus") also  relates to a proposal by PKS
to make a dividend distribution to the  holders of its Class D Stock,  including
Class D Stock issued in the Exchange Offer, of all

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

    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE  COMMISSION OR ANY  STATE SECURITIES COMMISSION  NOR HAS THE SECURITIES
AND EXCHANGE  COMMISSION OR  ANY  STATE SECURITIES  COMMISSION PASSED  UPON  THE
ACCURACY  OR ADEQUACY OF THESE PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS
A CRIMINAL OFFENSE.

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

                THE DATE OF THIS PROSPECTUS IS AUGUST 30, 1995.

                                             (COVER CONTINUED ON FOLLOWING PAGE)
<PAGE>
(CONTINUED FROM PREVIOUS PAGE)
the shares of  capital stock  of MFS  Communications Company,  Inc., a  Delaware
corporation  and  a  majority-owned  subsidiary  of  PKS  ("MFS"),  held  by PKS
immediately before  that distribution,  all  on the  terms  and subject  to  the
conditions  set  forth  herein (the  "Spin-off").  If the  Spin-off  occurs, the
capital stock of MFS distributed in the Spin-off will consist of (i)  40,091,644
shares  of common stock, par  value $.01 per share  (the "MFS Common Stock") and
(ii) 15,000,000 shares of Series B  convertible preferred stock, par value  $.01
per  share (the  "MFS Preferred  Stock"). Such  40,091,644 shares  of MFS Common
Stock and 15,000,000 shares of MFS Preferred Stock are collectively referred  to
herein  as the "Spin-off Stock". No holder of  Class D Stock will be required to
pay any cash or other consideration, to surrender or exchange shares of Class  D
Stock or any other security, or to take any other action in order to receive the
Spin-off  Stock pursuant  to the  Spin-off. PKS has  received a  ruling from the
Internal Revenue  Service  (the "IRS")  confirming  that the  Spin-off  will  be
tax-free  to the holders of  Class D Stock for  United States federal income tax
purposes (the  "Ruling"). See  "The Spin-off  -- Certain  United States  Federal
Income Tax Considerations Relating to the Spin-off."

    PKS  RESERVES THE RIGHT TO  ABANDON THE EXCHANGE OFFER  OR BOTH THE EXCHANGE
OFFER AND THE SPIN-OFF, AND PKS WILL  ABANDON THE EXCHANGE OFFER IF IT  ABANDONS
THE SPIN-OFF, ALL AS DESCRIBED IN "THE EXCHANGE OFFER -- RIGHT OF PKS TO EXTEND,
ABANDON  OR MODIFY  THE EXCHANGE  OFFER" AND "THE  SPIN-OFF --  CONDITION TO THE
SPIN-OFF; RIGHT OF PKS TO ABANDON, DEFER OR MODIFY THE SPIN-OFF." THUS, THERE IS
NO ASSURANCE THAT EITHER THE EXCHANGE OFFER OR THE SPIN-OFF WILL BE CONSUMMATED,
BUT IF  THE EXCHANGE  OFFER IS  CONSUMMATED, THE  SPIN-OFF WILL  BE  CONSUMMATED
PROMPTLY THEREAFTER.

    PKS ALSO RESERVES THE RIGHT TO EXTEND THE EXCHANGE OFFER OR TO MODIFY IN ANY
MANNER  THE TERMS  AND CONDITIONS OF  THE EXCHANGE  OFFER OR THE  SPIN-OFF OR TO
DEFER THE CONSUMMATION OF THE SPIN-OFF IF THE PKS BOARD OF DIRECTORS  DETERMINES
AT  ANY TIME  THAT SUCH  ACTION WOULD  BE IN  THE BEST  INTEREST OF  PKS AND ITS
STOCKHOLDERS. MODIFICATION OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER MAY
INCLUDE THE IMPOSITION BY PKS OF A LIMIT ON THE NUMBER OF SHARES OF EXCHANGEABLE
STOCK THAT WILL  BE ACCEPTED BY  PKS IN  THE EXCHANGE OFFER.  SEE "THE  EXCHANGE
OFFER  -- RIGHT OF PKS TO EXTEND, ABANDON OR MODIFY THE EXCHANGE OFFER" AND "THE
SPIN-OFF -- CONDITION TO THE SPIN-OFF; RIGHT OF PKS TO ABANDON, DEFER OR  MODIFY
THE SPIN-OFF."

    The   Exchange  Offer  is  not  conditioned   upon  any  minimum  amount  of
Exchangeable Securities being  tendered for  exchange. The  Exchange Offer  will
expire  at  5:00  p.m., Omaha,  Nebraska  time,  on September  29,  1995, unless
extended (such date,  as it may  be extended,  being referred to  herein as  the
"Expiration  Date"). Exchangeable  Securities tendered pursuant  to the Exchange
Offer may  be  withdrawn as  described  herein  prior to  the  Expiration  Date;
thereafter, such tenders are irrevocable by the tendering securityholders.

    PARTICIPATION  IN THE EXCHANGE OFFER IS  VOLUNTARY. SEE "RISK FACTORS" FOR A
DESCRIPTION OF CERTAIN  FACTORS THAT  SHOULD BE  CONSIDERED BEFORE  A HOLDER  OF
EXCHANGEABLE  SECURITIES DECIDES WHETHER  TO PARTICIPATE IN  THE EXCHANGE OFFER.
THE PKS BOARD OF  DIRECTORS RECOMMENDS THAT  HOLDERS OF EXCHANGEABLE  DEBENTURES
TENDER SUCH EXCHANGEABLE DEBENTURES IN THE EXCHANGE OFFER.

    THE  PKS BOARD OF DIRECTORS MAKES  NO RECOMMENDATION WITH RESPECT TO WHETHER
HOLDERS OF  EXCHANGEABLE STOCK  SHOULD  TENDER SUCH  EXCHANGEABLE STOCK  IN  THE
EXCHANGE OFFER.

    Any  holder  of  Exchangeable  Securities  desiring  to  participate  in the
Exchange Offer should follow the procedures set forth in "The Exchange Offer  --
Procedure  for  Tendering  Exchangeable  Securities;  Exchange  of  Exchangeable
Securities; Delivery of Offered Stock." Except as described therein, any  holder
of  Exchangeable Securities  who has pledged  such Exchangeable  Securities to a
lender and who desires  to participate in the  Exchange Offer must contact  such
lender to arrange for the tender of such Exchangeable Securities.

    All  information contained in  this Prospectus with respect  to PKS has been
provided by PKS. All  information contained in this  Prospectus with respect  to
MFS  has been  provided by  MFS. Questions  and requests  for assistance  or for
additional copies of  this Prospectus and  the Letter of  Transmittal should  be
directed  to Michael A. Kelley, Stock  Registrar, Peter Kiewit Sons', Inc., 1000
Kiewit Plaza, Omaha,  Nebraska 68131, telephone  (402) 271-2870, telecopy  (402)
271-2965.

                                                             (END OF COVER PAGE)
<PAGE>
    NEITHER PKS NOR MFS HAS ANY ARRANGEMENT WITH ANY BROKER, DEALER, SALESMAN OR
OTHER  PERSON  TO  SOLICIT  TENDERS OF  EXCHANGEABLE  SECURITIES.  NO  PERSON IS
AUTHORIZED TO GIVE ANY INFORMATION OR  TO MAKE ANY REPRESENTATION NOT  CONTAINED
IN  THIS PROSPECTUS IN CONNECTION  WITH THE EXCHANGE OFFER,  THE SPIN-OFF OR THE
OTHER MATTERS  DESCRIBED HEREIN,  AND, IF  GIVEN OR  MADE, SUCH  INFORMATION  OR
REPRESENTATION  SHOULD NOT BE  RELIED UPON AS  HAVING BEEN AUTHORIZED  BY PKS OR
MFS. NEITHER THE  DELIVERY OF THIS  PROSPECTUS NOR ANY  EXCHANGE MADE  HEREUNDER
SHALL,  UNDER ANY CIRCUMSTANCES,  CREATE ANY IMPLICATION THAT  THERE HAS BEEN NO
CHANGE IN THE  AFFAIRS OF  PKS OR  MFS SINCE THE  RESPECTIVE DATES  AS OF  WHICH
INFORMATION IS GIVEN HEREIN OR IN DOCUMENTS INCORPORATED HEREIN. THIS PROSPECTUS
DOES  NOT CONSTITUTE  AN OFFER  TO EXCHANGE,  OR A  SOLICITATION OF  AN OFFER TO
EXCHANGE, THE SECURITIES OFFERED BY THIS PROSPECTUS IN ANY JURISDICTION OR  FROM
ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER OR SOLICITATION.

                             AVAILABLE INFORMATION

    PKS  and  MFS are  each  subject to  the  informational requirements  of the
Securities Exchange  Act of  1934,  as amended  (the  "Exchange Act"),  and,  in
accordance  therewith, file reports, proxy statements and other information with
the Commission. Such reports,  proxy statements and  other information filed  by
each  of PKS and MFS can be inspected and copied at the Public Reference Room of
the Securities and  Exchange Commission (the  "Commission") at Judiciary  Plaza,
450  Fifth Street,  N.W., Washington,  D.C. 20549,  and at  the public reference
facilities maintained by the Commission at 7 World Trade Center, Suite 1300, New
York, New York 10048, and 500 West Madison Street, Suite 1400, Chicago, Illinois
60661. Copies of  such materials can  be obtained at  prescribed rates from  the
Public   Reference  Section  of  the  Commission  at  450  Fifth  Street,  N.W.,
Washington, D.C. 20549. In addition, material  relating to MFS can be  inspected
at  the offices of the Nasdaq National  Market, 1735 K Street, N.W., Washington,
D.C. 20005-1506.

    This Prospectus does not  contain all the information  set forth in (i)  the
Registration  Statement on Form  S-4 and exhibits  thereto, including amendments
(the "Registration Statement"), of  which this Prospectus is  a part, and  which
PKS  and MFS have filed with the Commission under the Securities Act of 1933, as
amended (the "Securities Act")  or (ii) the Schedule  13E-4 Issuer Tender  Offer
Statement  and  exhibits  thereto  (together with  any  amendments  thereto, the
"Schedule 13E-4") which PKS has filed with the Commission under the Exchange Act
with respect  to the  Exchange Offer.  Reference is  made to  such  Registration
Statement  and Schedule 13E-4  for further information with  respect to PKS, MFS
and the  Spin-off  Stock  and  the  Offered  Stock  offered  hereby.  Statements
contained   herein  concerning  the  provisions  of  documents  are  necessarily
summaries of such documents, and each statement is qualified in its entirety  by
reference to the copy of the applicable document filed with the Commission.

                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

    The  following documents previously filed on the dates indicated by PKS with
the Commission pursuant to the Exchange Act are hereby incorporated by reference
into this Prospectus:

    1.  Annual Report of PKS on Form  10-K for the year ended December 31,  1994
       on March 31, 1995, as amended by Form 10-K/A Amendment No. 1 on April 27,
       1995 and Form 10-K/A Amendment No. 2 on August 4, 1995;

    2.   Quarterly Report  of PKS on Form  10-Q for the  quarter ended March 31,
       1995, as amended by Form 10-Q/A Amendment No. 1 on June 9, 1995;

    3.  Quarterly Report of PKS on Form 10-Q for the quarter ended June 30, 1995
       on August 14, 1995; and

    4.  The Proxy Statement of PKS filed with the Commission on May 1, 1995.

                                       ii
<PAGE>
    The following documents previously filed on the dates indicated by MFS  with
the Commission pursuant to the Exchange Act are hereby incorporated by reference
into this Prospectus:

    1.   Annual Report of MFS on Form 10-K for the year ended December 31, 1994,
       as amended by  Form 10-K/A Amendment  No. 1  on April 10,  1995 and  Form
       10-K/A Amendment No. 2 on May 15, 1995;

    2.   (i) Current Report of MFS on Form 8-K dated May 18, 1994 (excluding the
       pages of the Quarterly  Report on Form 10-Q  for the quarter ended  March
       31, 1994 of Centex Telemanagement, Inc. incorporated by reference therein
       and  attached thereto), as amended by Form  8-K/A Amendment No. 1 on June
       29, 1994 and Form 8-K/A Amendment No. 2 on August 31, 1994, (ii)  Current
       Report  on Form  8-K dated  November 2,  1994, as  amended by  Form 8-K/A
       Amendment No. 1 on  December 13, 1994, (iii)  Current Report on Form  8-K
       dated  April 14, 1995 and (iv) Current  Report on Form 8-K, dated May 22,
       1995;

    3.  Quarterly Report  of MFS on  Form 10-Q for the  quarter ended March  31,
       1995 filed with the Commission on May 12, 1995;

    4.  Quarterly Report of MFS on Form 10-Q for the quarter ended June 30, 1995
       filed with the Commission on August 14, 1995;

    5.   The description of the MFS Common Stock contained in MFS's Registration
       Statement on  Form  8-A (File  No.  0-21594) filed  with  the  Commission
       pursuant  to Section  12(g) of  the Exchange  Act on  April 21,  1993, as
       amended by Amendment No. 1 filed with  the Commission on a Form 8 on  May
       10, 1993; and

    6.   The  definitive Proxy  Statement of  MFS filed  with the  Commission on
       August 8, 1995.

    In addition,  all  reports  and  other  documents  filed  by  PKS  and  MFS,
respectively, pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act
subsequent  to the date  hereof and prior to  the date on  which the Spin-off is
consummated shall be deemed to be incorporated by reference herein from the date
of filing of such reports or documents.  Any statement contained in a report  or
document  incorporated or deemed to be incorporated by reference herein shall be
deemed to  be modified  or superseded  for purposes  of this  Prospectus to  the
extent  that a  statement contained  herein or  in any  other subsequently filed
document which also is  incorporated or deemed to  be incorporated by  reference
herein  modifies or supersedes such statement. Any such statement so modified or
superseded shall  not  be  deemed,  except as  so  modified  or  superseded,  to
constitute a part of this Prospectus.

    THIS  PROSPECTUS INCORPORATES DOCUMENTS BY REFERENCE WHICH ARE NOT PRESENTED
HEREIN OR DELIVERED HEREWITH.  THESE DOCUMENTS ARE  AVAILABLE UPON REQUEST  FROM
THE  STOCK  REGISTRAR,  PETER  KIEWIT SONS',  INC.,  1000  KIEWIT  PLAZA, OMAHA,
NEBRASKA 68131 (TELEPHONE: (402) 271-2870; TELECOPY (402) 271-2965). IN ORDER TO
ENSURE TIMELY DELIVERY OF THE DOCUMENTS, ANY REQUEST SHOULD BE MADE BY SEPTEMBER
22, 1995. PKS undertakes to provide  without charge to each person, including  a
beneficial  owner, to  whom a  copy of  this Prospectus  is delivered,  upon the
written or oral request of such person, a copy of any or all of the  information
incorporated  by  reference  in this  Prospectus,  other than  exhibits  to such
information (unless  such exhibits  are specifically  incorporated by  reference
into the information that this Prospectus incorporates).

                                      iii
<PAGE>
                               TABLE OF CONTENTS

<TABLE>
<S>                                                                                     <C>
PROSPECTUS SUMMARY....................................................................          1
RISK FACTORS..........................................................................         16
  RISK FACTORS RELATING TO THE EXCHANGE OFFER, SPIN-OFF AND PKS SECURITIES............         16
  RISK FACTORS RELATING TO MFS........................................................         23
OVERVIEW..............................................................................         27
SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA......................................         44
THE EXCHANGE OFFER....................................................................         51
THE SPIN-OFF..........................................................................         58
CERTAIN TRANSACTIONS..................................................................         65
RECENT DEVELOPMENTS...................................................................         68
DESCRIPTION OF SECURITIES.............................................................         71
LEGAL MATTERS.........................................................................         82
EXPERTS...............................................................................         82
CERTAIN DEFINITIONS...................................................................         83
INDEX TO FINANCIAL STATEMENTS.........................................................        F-1
ANNEX I -- OPINION OF CS FIRST BOSTON CORPORATION
ANNEX II -- OPINION OF LEHMAN BROTHERS INC.
</TABLE>

                                       iv
<PAGE>
                               PROSPECTUS SUMMARY

    THE  FOLLOWING IS  A SUMMARY OF  CERTAIN INFORMATION  CONTAINED ELSEWHERE OR
INCORPORATED BY REFERENCE  IN THIS  PROSPECTUS. AS THIS  SUMMARY IS  NECESSARILY
INCOMPLETE,  REFERENCE IS MADE TO, AND THIS SUMMARY IS QUALIFIED IN ITS ENTIRETY
BY, THE MORE DETAILED INFORMATION INCLUDED OR INCORPORATED BY REFERENCE IN  THIS
PROSPECTUS.  CAPITALIZED TERMS  USED BUT  NOT DEFINED  IN THIS  SUMMARY HAVE THE
MEANINGS ASSIGNED  TO  THEM  IN  "CERTAIN  DEFINITIONS"  OR  ELSEWHERE  IN  THIS
PROSPECTUS. SECURITYHOLDERS ARE URGED TO READ THIS PROSPECTUS IN ITS ENTIRETY.

                            PETER KIEWIT SONS', INC.

    Peter  Kiewit Sons', Inc. is a Delaware corporation. Its principal executive
offices are located at 1000 Kiewit  Plaza, Omaha, Nebraska 68131. Its  telephone
number  is  (402) 342-2052.  PKS's business  operations  are organized  into two
primary operating groups: the  Construction & Mining  Group and the  Diversified
Group.  The  Construction  &  Mining  Group engages  in  business  as  a general
contractor  and  as  the  owner  and/or  operator  of  mining  operations.   The
Diversified  Group  engages in  a  variety of  diversified  business activities,
including coal mining, telecommunications, and energy production.

    The construction business of the Construction & Mining Group is conducted by
subsidiaries of Kiewit Construction Group Inc., a wholly-owned subsidiary of PKS
("KCG"). KCG and its  joint ventures perform construction  services for a  broad
range  of public and private customers  primarily in North America. New contract
awards during 1994  were distributed among  the following construction  markets:
transportation, including highways, bridges, airports and railroads (48%), power
(18%),  oil and gas  (12%), commercial buildings (8%),  sewer and waste disposal
(5%), and residential  (4%), with smaller  awards in the  water supply  systems,
dams  and reservoirs, marine, and mining  markets. As general contractors, KCG's
subsidiaries are  responsible  for  the  overall  direction  and  management  of
construction  projects and  for completion of  each contract  in accordance with
terms, plans, and specifications. KCG plans and schedules the projects, procures
materials, hires workers as needed, and awards subcontracts. The mining business
of the Construction & Mining Group is conducted through Kiewit Mining Group Inc.
("KMG"). KMG acts as the operator, on a fee basis, of three coal mines in  which
Kiewit  Coal Properties Inc. ("KCP"), a Diversified Group subsidiary, owns a 50%
interest. KMG  also  owns  and  operates two  smaller  coal  mines  and  several
construction aggregate quarries.

    The  Diversified Group owns  significant interests in  three publicly traded
companies, MFS Communications Company, Inc. ("MFS"), C-TEC Corporation ("C-TEC")
and California Energy Company, Inc. ("CECI"). MFS's business is described below.
C-TEC currently has  four operating groups.  The Telephone Group  consists of  a
Pennsylvania  public utility providing  local telephone service  to a 19-county,
5,067 square mile service territory in Pennsylvania. The Cable Group is a  cable
television  operator  with cable  television systems  located  in New  York, New
Jersey, Michigan  and Delaware.  The  Long Distance  Group sells  long  distance
telephone  services in the local service area of the Telephone Group and resells
services  elsewhere   in  Pennsylvania.   The  Communications   Group   provides
telecommunications-related   engineering   and   technical   services   in   the
northeastern United  States.  CECI  is  engaged  in  the  exploration  for,  and
development  and  operation  of, environmentally  responsible  independent power
production facilities worldwide utilizing  geothermal resources or other  energy
sources,  such  as hydroelectric,  natural gas,  oil  and coal.  The Diversified
Group, through its wholly-owned  subsidiary, KCP, also  owns interests in  three
coal mines operated by the Construction & Mining Group.

                        MFS COMMUNICATIONS COMPANY, INC.

    MFS   Communications   Company,   Inc.,  a   Delaware   corporation   and  a
majority-owned subsidiary of PKS, is organized as a holding company and operates
through its subsidiaries in two business segments: telecommunications  services,
through   MFS  Telecom,  Inc.   ("MFS  Telecom"),  MFS   Intelenet,  Inc.  ("MFS
Intelenet"), MFS  Datanet,  Inc. ("MFS  Datanet")  and MFS  International,  Inc.

                                       1
<PAGE>
("MFS  International"); and  network systems  integration, primarily  though MFS
Network Technologies,  Inc.  ("MFS  Network  Technologies").  In  addition,  MFS
Development, a division of MFS, acts as an internal network development resource
for the planning and construction of MFS's own networks. MFS reported a net loss
of  $13.1 million, $15.8  million and $151.2  million for the  three years ended
December 31, 1992, 1993 and 1994,  respectively, and $128.7 million for the  six
months ended June 30, 1995.

    MFS's  strategy  is  to  become  a  primary  provider  of telecommunications
services to business and government customers. MFS deploys its own networks  and
facilities  and leases network capacity from other service providers in order to
provide  a  broad  array  of  high  quality  voice,  data  and  other   services
specifically  designed to meet the requirements of the customer. MFS also serves
a growing  number of  long distance  carriers, resellers,  service  aggregators,
shared  tenant service  providers, cellular  providers and  radio providers that
incorporate MFS's switched, special  access and private  line services into  the
services that those firms offer to their customers.

    TELECOMMUNICATIONS SERVICES

    - MFS  Telecom provides  dedicated circuits  for critical telecommunications
      needs, and pursuant  to MFS's authorization  from the state  of New  York,
      recently began offering switched services to its customers. These services
      are  provided over state-of-the-art digital  fiber optic networks. Typical
      customers for MFS Telecom are large business and government customers.  In
      addition,  MFS is authorized by  the appropriate regulatory authorities to
      provide  switched   services  in   the  states   of  Illinois,   Maryland,
      Massachusetts,  Michigan  and Washington,  although currently  MFS Telecom
      does not offer switched services in those jurisdictions.

    - MFS Intelenet  provides  a single  source  of integrated  local  and  long
      distance  telecommunications services and facilities management, primarily
      for medium and small businesses, utilizing MFS's own network and switching
      platform as well as the facilities of other providers.

    - MFS Datanet provides high-speed  data communications over an  Asynchronous
      Transfer  Mode ("ATM") network. Among the  services offered by MFS Datanet
      is the connection of  Local Area Networks ("LANs")  across town or  across
      the  country at the  same native speed  and protocol as  that at which the
      LANs operate.  MFS Datanet  offers  high-speed LAN  interconnect  services
      including  Frame Relay, Ethernet,  Token Ring, and  FDDI utilizing its ATM
      network.

    - MFS International currently offers  communications services to  businesses
      between   and  within  London,  Paris  and  Frankfurt,  and  is  currently
      developing networks in Stockholm and Zurich. MFS International was created
      to take advantage of international opportunities and to better serve MFS's
      existing customer  base  of  multinational  companies.  MFS  International
      currently  plans to  develop additional  networks and  services in primary
      international business centers in Europe and  Asia, and is in the  process
      of evaluating potential opportunities in these business centers.

    NETWORK SYSTEMS INTEGRATION

    - MFS  Network Technologies provides network systems integration for MFS and
      third  parties  who  deploy  sophisticated  networks.  Such  projects  and
      applications   include  voice  and  data  networks,  interactive  distance
      learning networks, security  systems, combined cable  television-telephone
      networks, and intelligent transportation systems.

    MFS  was incorporated in  Delaware in 1987.  Its principal executive offices
are located at 3555  Farnam Street, Suite 200,  Omaha, Nebraska, 68131, and  its
telephone number is (402) 977-5300.

            MFS RECAPITALIZATION AND OTHER PRELIMINARY TRANSACTIONS

    In  order to satisfy certain requirements  of applicable tax law relating to
the Spin-off that are addressed by the Ruling, PKS and Kiewit Diversified  Group
Inc., a wholly owned first-tier subsidiary

                                       2
<PAGE>
of PKS ("KDG"), have agreed with MFS to effect the MFS Recapitalization pursuant
to  which KDG would  exchange 2,900,000 of  the 42,962,658 shares  of MFS Common
Stock currently held by  KDG for 15,000,000 shares  of MFS Preferred Stock.  The
MFS Recapitalization will be consummated immediately prior to the Spin-off. As a
result of the MFS Recapitalization, the percentage interest of the common equity
of  MFS owned  by KDG  (calculated taking  into account  outstanding options and
warrants to acquire MFS Common Stock, and securities convertible into MFS Common
Stock) will be reduced, and the percentage interest of such common equity of MFS
owned by non-PKS holders of MFS Common Stock will be correspondingly  increased.
This  percentage interest shift will result  in a reduction of approximately $60
million in the value of the outstanding  MFS Common Stock held by KDG (based  on
the  last  reported sale  price  of MFS  Common Stock  on  August 24,  1995). In
exchange for this reduction, KDG will receive 15 million shares of high-vote MFS
Preferred Stock  in  a  face  amount  of $15  million.  The  terms  of  the  MFS
Recapitalization  were determined through arm's  length negotiations between the
management of PKS and the management of MFS, and were approved by the MFS Board,
the PKS Board and independent  special committees of the  MFS Board and the  PKS
Board.  See "Overview -- Background and Purpose  of the Spin-off; Purpose of the
Exchange Offer; Board Proceedings."

    The MFS Recapitalization was approved by the holders of MFS Common Stock  at
the  MFS 1995 annual stockholders meeting held on August 24, 1995. In connection
with such approval, PKS  voted all of  the shares of MFS  Common Stock owned  or
controlled  by it in the  same manner as the majority  of the non-PKS holders of
MFS Common Stock (and not  the holders of any preferred  stock of MFS which  was
outstanding)  present in person or by proxy  at the meeting voted. Thus, the MFS
Recapitalization was supported  by a  majority of such  non-PKS stockholders  of
MFS.  See "Overview -- The MFS Recapitalization." Subsequent to the consummation
of the  MFS Recapitalization,  KDG will  distribute  as a  dividend to  PKS  the
40,062,658  shares of  MFS Common Stock  and 15,000,000 shares  of MFS Preferred
Stock then held by  it. Immediately after receiving  such dividend and prior  to
the  Spin-off, PKS  will purchase 28,986  additional shares of  MFS Common Stock
from MFS for $1,000,000. Under the  agreement between PKS and MFS governing  the
MFS  Recapitalization, neither the MFS Recapitalization nor such purchase of MFS
Common Stock would be consummated if PKS abandoned the Spin-off. If PKS were  to
propose  a  material  modification  to  the terms  of  the  Spin-off  (which PKS
considers to be highly unlikely), both PKS and MFS would review the terms of the
MFS Recapitalization  in  the context  of  the modified  Spin-off  to  determine
whether  to  consummate the  MFS Recapitalization  on its  existing terms  or to
consider alternative terms. See "Overview -- The Spin-off."

                               THE EXCHANGE OFFER

<TABLE>
<S>                                 <C>
Terms.............................  The Exchange Offer will be consummated on the terms  and
                                    subject  to the conditions  contained in this Prospectus
                                    and the related Letter  of Transmittal. PKS will  offer,
                                    pursuant  to the Exchange Offer, to exchange (i) .416598
                                    shares of Class  D Stock for  each outstanding share  of
                                    Class B Stock and Class C Stock (including all shares of
                                    Class  C  Stock  issued  in  exchange  for  Exchangeable
                                    Debentures), (ii)  24.75 shares  of  Class C  Stock  and
                                    24.75  shares  of  Class  D  Stock  for  each  $1,000 in
                                    principal amount of each outstanding 1990 Series Class C
                                    and D Debenture; (each such share of Class C Stock  will
                                    then be exchangeable for .416598 shares of Class D Stock
                                    pursuant  to the  Exchange Offer as  described in clause
                                    (i) above) (iii) 22.98 shares of Class C Stock and 22.98
                                    shares of Class  D Stock  for each  $1,000 in  principal
                                    amount  of each  outstanding 1991  Series Class  C and D
                                    Debenture; (each such share of  Class C Stock will  then
                                    be  exchangeable  for .416598  shares  of Class  D Stock
                                    pursuant to the Exchange
</TABLE>

                                       3
<PAGE>

<TABLE>
<S>                                 <C>
                                    Offer as described in clause  (i) above) and (iv)  19.97
                                    shares  of Class  D Stock  for each  $1,000 in principal
                                    amount  of  each   outstanding  1993   Series  Class   D
                                    Debenture, that in each case is validly tendered and not
                                    properly withdrawn prior to the Expiration Date.

                                    The  number of shares of Class D Stock issuable for each
                                    share of  Exchangeable Stock  in the  Exchange Offer  is
                                    based   on   the  ratio   applicable  to   January  1995
                                    conversions of  Class B  Stock and  Class C  Stock  into
                                    Class  D Stock  (which ratio  was in  turn based  on the
                                    ratio of the Class  B&C Per Share Price  to the Class  D
                                    Per  Share Price at  January 1, 1995  in accordance with
                                    the PKS Certificate of Incorporation), adjusted for  the
                                    dividends  paid on  the Class  B Stock  and the  Class C
                                    Stock in January and May  1995. The number of shares  of
                                    Class C Stock and Class D Stock issuable in exchange for
                                    the  Exchangeable Debentures  represents that  number of
                                    shares that would have been issuable upon conversion  of
                                    such  Exchangeable Debentures  in accordance  with their
                                    terms. A  holder of  shares  of Exchangeable  Stock  may
                                    elect   to  exchange  any  or   all  of  the  shares  of
                                    Exchangeable Stock held by  such holder in the  Exchange
                                    Offer.  A debentureholder may only elect to exchange the
                                    entire  principal  amount  (no  partial  exchanges   are
                                    permitted)  of  an Exchangeable  Debenture held  by such
                                    debentureholder in the Exchange Offer. See "The Exchange
                                    Offer -- Terms of the Exchange Offer" and "-- Withdrawal
                                    Rights" and "Description  of Securities  -- PKS  Stock."
                                    There   are  no  dissenter's   rights  of  appraisal  in
                                    connection with the Exchange Offer.
Expiration Date...................  The Exchange  Offer will  be open  until the  Expiration
                                    Date,  which  will  be  September  29,  1995  unless the
                                    Exchange Offer is extended as described herein. See "The
                                    Exchange Offer -- Terms of  the Exchange Offer" and  "--
                                    Right  of PKS to Extend,  Abandon or Modify the Exchange
                                    Offer."
Tender Procedure..................  To  tender  Exchangeable  Securities  pursuant  to   the
                                    Exchange  Offer, a properly  completed and duly executed
                                    Letter of Transmittal (or facsimile thereof), any  other
                                    documents  required  by  PKS  and  certificates  for the
                                    Exchangeable Securities to be tendered must be  received
                                    by  PKS prior to 5:00 p.m., Omaha, Nebraska time, on the
                                    Expiration Date. See  "The Exchange  Offer --  Procedure
                                    for   Tendering  Exchangeable  Securities;  Exchange  of
                                    Exchangeable Securities; Delivery of Offered Stock."
Potential Proration...............  PKS does not  anticipate that  it will  be necessary  to
                                    impose  a limit on the amount of Exchangeable Stock that
                                    may be exchanged in the Exchange Offer; however, the PKS
                                    Board of  Directors  may  impose  such  a  limit  if  it
                                    determines  that acceptance of all tendered Exchangeable
                                    Stock would not be in the  best interest of PKS and  its
                                    stockholders. If the PKS Board were to take such action,
                                    it  would impose  such limit  on the  Exchangeable Stock
                                    tendered  (but  not   on  the  Exchangeable   Debentures
                                    tendered)   on  a  pro  rata   basis  and  would  follow
</TABLE>

                                       4
<PAGE>

<TABLE>
<S>                                 <C>
                                    the procedures otherwise applicable to a modification of
                                    the Exchange Offer. Without limiting the factors the PKS
                                    Board might take into account in taking such action, the
                                    PKS Board might  consider imposing  such a  limit if  it
                                    concluded  that acceptance of all shares of Exchangeable
                                    Stock   tendered    could   frustrate    the    employee
                                    incentivization  purposes  of  PKS's  employee ownership
                                    program for Class C Stock, given the aggregate amount of
                                    and/or   the   concentration   of   ownership   of   the
                                    Exchangeable  Stock tendered. (Such stock ownership pro-
                                    gram, under which Class C  Stock is offered to  selected
                                    employees  of the Construction & Mining Group each year,
                                    is intended  in part  to incentivize  such employees  by
                                    giving  them a financial stake in the performance of the
                                    sector of PKS's  business in which  they are  employed).
                                    See  "The  Exchange Offer  --  Right of  PKS  to Extend,
                                    Abandon or Modify the Exchange Offer."
Intentions of Certain Significant
 Stockholders Regarding
 Participation in the Exchange
 Offer............................  With certain exceptions, including Messrs. Walter Scott,
                                    Jr. and Robert Julian, the  directors of PKS and of  KCG
                                    have advised PKS in writing that they will not tender in
                                    the  Exchange Offer any shares of  Class C Stock held by
                                    them. Messrs. Scott and Julian expect to tender, in  the
                                    aggregate,  785,892 shares of Class  C Stock pursuant to
                                    the  Exchange  Offer.   See  "Certain  Transactions   --
                                    Intentions of Certain Significant Stockholders Regarding
                                    Participation  in Exchange Offer."  PKS expects that all
                                    Exchangeable Debentures,  including  those held  by  the
                                    directors  of PKS and KCG,  will be tendered pursuant to
                                    the Exchange Offer.
Withdrawal Rights.................  Exchangeable  Securities   tendered  pursuant   to   the
                                    Exchange Offer may be withdrawn at any time prior to the
                                    Expiration   Date  without  penalty  on  the  terms  and
                                    conditions contained  herein. Once  the Expiration  Date
                                    has  occurred,  a tender  of Exchangeable  Securities is
                                    irrevocable by  the tendering  securityholder. See  "The
                                    Exchange Offer -- Withdrawal Rights."
Fractional Shares.................  In lieu of issuing fractional shares, PKS will round the
                                    number  of shares of  Offered Stock to  be received by a
                                    tendering securityholder to the nearest whole number  of
                                    shares   without  any   additional  consideration  being
                                    payable by or to such holder. See "The Exchange Offer --
                                    Terms of the Exchange Offer."
Condition to the Exchange Offer...  The Exchange Offer  will not be  consummated unless  the
                                    Ruling received by PKS, confirming that the Spin-off and
                                    certain  related transactions  will be  consummated on a
                                    tax-free basis  to  the holders  of  Class D  Stock  for
                                    United  States  federal  income  tax  purposes,  remains
                                    substantially  in  effect   as  of  the   date  of   the
                                    consummation  of the  Exchange Offer.  See "The Exchange
                                    Offer  --  Condition  to  the  Exchange  Offer."   There
</TABLE>

                                       5
<PAGE>

<TABLE>
<S>                                 <C>
                                    are  no  federal  or  state  regulatory  requirements or
                                    approvals that must  be complied with  or obtained as  a
                                    condition of the Exchange Offer.
Right to Abandon or Modify
 Exchange Offer...................  If the PKS Board determines that such action would be in
                                    the  best interest of PKS  and its stockholders, PKS may
                                    modify the Exchange Offer and, subject to the withdrawal
                                    rights described herein, retain all tendered  securities
                                    until  the  expiration  of  the  Exchange  Offer  as  so
                                    modified. Further, PKS  may abandon  the Exchange  Offer
                                    and promptly return all tendered securities to tendering
                                    securityholders if the PKS Board of Directors reasonably
                                    determines  that there shall  have occurred any material
                                    change in the business, financial condition, results  of
                                    operations  or prospects  of MFS  or of  the Diversified
                                    Group, in the market price  of the MFS Common Stock,  or
                                    in  any  other  circumstance,  and  that,  as  a result,
                                    consummation of the Exchange Offer would no longer be in
                                    the best interest of PKS and its stockholders. PKS  will
                                    abandon  the Exchange Offer in the event it abandons the
                                    Spin-off. See "The  Exchange Offer  -- Right  of PKS  to
                                    Extend, Abandon or Modify the Exchange Offer."
Certain Tax Considerations........  Pursuant to the Ruling, for United States federal income
                                    tax purposes neither PKS nor the holders of Exchangeable
                                    Debentures  will  recognize  any  gain  or  loss  on  an
                                    exchange of Offered  Stock for Exchangeable  Debentures.
                                    In addition, pursuant to an opinion of counsel, although
                                    the  issue  is not  free from  doubt, for  United States
                                    federal income tax purposes neither PKS nor the  holders
                                    of  Exchangeable Stock should recognize any gain or loss
                                    on an exchange of Offered Stock for Exchangeable  Stock.
                                    In  those events, the holders'  tax bases in the Offered
                                    Stock will  be  the  same  as their  bases  in  the  Ex-
                                    changeable  Securities, and the holders' holding periods
                                    for the  Offered  Stock  generally  will  include  their
                                    holding  periods  for the  Exchangeable  Securities. See
                                    "The Exchange  Offer --  Certain United  States  Federal
                                    Income  Tax  Considerations  Relating  to  the  Exchange
                                    Offer."
</TABLE>

    PARTICIPATION IN THE EXCHANGE OFFER IS  VOLUNTARY. SEE "RISK FACTORS" FOR  A
DESCRIPTION  OF CERTAIN  FACTORS THAT  SHOULD BE  CONSIDERED BEFORE  A HOLDER OF
EXCHANGEABLE SECURITIES DECIDES  WHETHER TO PARTICIPATE  IN THE EXCHANGE  OFFER.
THE  PKS BOARD OF  DIRECTORS RECOMMENDS THAT  HOLDERS OF EXCHANGEABLE DEBENTURES
TENDER SUCH EXCHANGEABLE DEBENTURES IN THE EXCHANGE OFFER.

    THE PKS BOARD OF DIRECTORS MAKES  NO RECOMMENDATION WITH RESPECT TO  WHETHER
HOLDERS  OF  EXCHANGEABLE STOCK  SHOULD TENDER  SUCH  EXCHANGEABLE STOCK  IN THE
EXCHANGE OFFER.

                                  THE SPIN-OFF

<TABLE>
<S>                                 <C>

Manner of Distribution............  The Spin-off will  be declared  and be  effected on  the
                                    Spin-off Date (as defined below) to holders of record of
                                    Class  D Stock  (including Class  D Stock  issued in the
                                    Exchange Offer) on such date in the event the  condition
                                    described  under  "The  Spin-off  --  Condition  to  the

</TABLE>
                                       6

<PAGE>

<TABLE>
<S>                                 <C>
                                    Spin-off; Right of PKS to  Abandon, Defer or Modify  the
                                    Spin-off"   is  satisfied,  unless   the  PKS  Board  of
                                    Directors  has  exercised  its  right  to  abandon   the
                                    Spin-off  if  it  determines for  any  reason  that such
                                    abandonment is  in  the best  interest  of PKS  and  its
                                    stockholders.  No  holder  of  Class  D  Stock  will  be
                                    required to  pay any  cash  or other  consideration,  to
                                    surrender  or exchange  shares of  Class D  Stock or any
                                    other security or to take  any other action in order  to
                                    receive  the  Spin-off Stock  pursuant to  the Spin-off.
                                    There  are  no  dissenter's   rights  of  appraisal   in
                                    connection with the Spin-Off.
Spin-off Stock....................  The Spin-off Stock will consist of a total of 40,091,644
                                    shares  of MFS  Common Stock, which  will constitute the
                                    major portion of the Spin-off  Stock in terms of  value,
                                    and a total of 15,000,000 shares of MFS Preferred Stock,
                                    which  will constitute  a minor portion  of the Spin-off
                                    Stock in  terms  of  value.  The  number  of  shares  of
                                    Spin-off  Stock  to be  distributed  in respect  of each
                                    outstanding share of Class  D Stock cannot be  precisely
                                    determined  prior to the Expiration Date of the Exchange
                                    Offer. The following table sets forth PKS's estimates of
                                    the number  of  shares  of  MFS  Common  Stock  and  MFS
                                    Preferred  Stock to be distributed  per share of Class D
                                    Stock outstanding at the time of the Spin-Off,  assuming
                                    that   (i)  all  of   the  Exchangeable  Debentures  are
                                    exchanged for Offered  Stock in the  Exchange Offer  and
                                    (ii)  the stated number of  shares of Exchangeable Stock
                                    are exchanged for Class D Stock in the Exchange Offer:
</TABLE>

<TABLE>
<CAPTION>
                                                                ESTIMATED NUMBER OF   ESTIMATED NUMBER OF
                                                                   SHARES OF MFS         SHARES OF MFS
                                                                    COMMON STOCK        PREFERRED STOCK
                                          ASSUMED NUMBER OF       DISTRIBUTED PER       DISTRIBUTED PER
                                        SHARES OF EXCHANGEABLE    SHARE OF CLASS D      SHARE OF CLASS D
                                          STOCK EXCHANGED(1)          STOCK(2)              STOCK(2)
                                        ----------------------  --------------------  --------------------
                                        <S>                     <C>                   <C>
                                              3,000,000                  1.77                  0.66
                                              5,000,000                  1.71                  0.64
                                        ------------------------------

                                        (1)  The 3,000,000 share assumption reflects PKS's estimate of the
                                             number of shares of Exchangeable Stock likely to be  tendered
                                             in the Exchange Offer, based upon the tender indications that
                                             PKS  has received from members of  the PKS Board of Directors
                                             and  members  of  the  KCG  Board  of  Directors,  and  PKS's
                                             estimates  of the  likely number  of additional  tenders. The
                                             5,000,000 share assumption is set forth solely to  illustrate
                                             the  impact of the  tender of substantially  more shares than
                                             anticipated by PKS.  PKS does  not believe that  a tender  of
                                             5,000,000  shares is likely.  The 3,000,000 figure represents
                                             20.2%, and  the 5,000,000  figure  represents 33.7%,  of  the
                                             total  number of  shares of Class  B Stock and  Class C Stock
                                             outstanding at June 23, 1995.

                                        (2)  The estimate of the number of shares of MFS Common Stock  and
                                             MFS  Preferred Stock distributed  per share of  Class D Stock
                                             was determined by dividing the total number of each class  of
                                             shares  to be  distributed by  the sum  of (i)  the number of
                                             shares of Class D Stock  currently outstanding, (ii) in  each
                                             case,  the number  of shares of  Class D Stock  that would be
                                             issued upon  tender  of  the  assumed  number  of  shares  of
                                             Exchangeable Stock, and (iii) the number of shares of Class D
                                             Stock  that would be issued upon exchange of all Exchangeable
                                             Debentures.
</TABLE>

                                       7
<PAGE>

<TABLE>
<S>                                 <C>
                                    The MFS Preferred  Stock is  subject, by  its terms,  to
                                    stringent restrictions on transfer. In addition, KDG has
                                    agreed to grant to the Secretary and Assistant Secretary
                                    of MFS an irrevocable proxy to vote all of the shares of
                                    MFS  Preferred Stock  in proportion  to the  vote of the
                                    holders of MFS  Common Stock on  all matters other  than
                                    the  election of MFS  directors and matters  as to which
                                    the holders of  MFS Preferred Stock  vote as a  separate
                                    class under Delaware corporation law. Holders of Class D
                                    Stock  will receive MFS Preferred Stock in the Spin- off
                                    subject to such  irrevocable proxy. In  lieu of  issuing
                                    fractional  shares  of  Spin-off Stock,  PKS  will round
                                    fractional shares to whole shares without affecting  the
                                    total  number  of  shares of  Spin-off  Stock.  See "The
                                    Spin-off -- Manner  of Effecting  the Distribution"  and
                                    "-- Listing and Trading of Spin-off Stock."
Spin-off Date.....................  The  date as of which  the Spin-off dividend is declared
                                    is referred  to  herein  as  the  "Spin-off  Date."  The
                                    Spin-off   Date  will  also  be   the  record  date  for
                                    determining the  holders  of Class  D  Stock  (including
                                    Class  D Stock issued in the Exchange Offer) entitled to
                                    receive the  Spin-off Stock.  PKS currently  anticipates
                                    that the Spin-off Date will be the day after the Expira-
                                    tion   Date  and   that  the  Spin-off   Stock  will  be
                                    transferred on the books and  records of MFS to  holders
                                    of Class D Stock on or promptly after the Spin-off Date.
                                    Certificates  representing Spin-off  Stock however, will
                                    not be mailed to holders of Class D Stock (or to lenders
                                    to which such Class D  Stock is pledged) until three  to
                                    four weeks after the Spin-off Date. See "The Spin-off --
                                    Manner  of Effecting the Distribution." Holders of Class
                                    D Stock  should  not attempt  to  sell or  transfer  MFS
                                    Common  Stock  received pursuant  to the  Spin-off until
                                    they have  received  the  certificates  evidencing  such
                                    stock.
Trading of Spin-off Stock.........  MFS  Common Stock is currently  traded on the Nasdaq Na-
                                    tional Market under the  symbol "MFST," and MFS  expects
                                    that  it  will  continue  to  be  traded  on  the Nasdaq
                                    National Market or a  national securities exchange.  The
                                    ability of a holder of MFS Common Stock to realize value
                                    upon  a sale of such stock will be entirely dependent on
                                    the market for  the MFS Common  Stock. The directors  of
                                    MFS  and  PKS who  will  receive Spin-off  Stock  in the
                                    Spin-off (other than  one director of  PKS who became  a
                                    director  in 1995) have agreed to certain limitations on
                                    the transferability of such stock. Notwithstanding these
                                    agreements, a substantial number of shares of MFS Common
                                    Stock will  become  available  for future  sale  in  the
                                    public  market  as a  result of  the Spin-off.  Sales of
                                    substantial amounts of such shares in the public  market
                                    could  adversely  affect  the market  price  of  the MFS
                                    Common Stock. On August 24, 1995 the last reported  sale
                                    price  of the MFS Common Stock as reported by the Nasdaq
                                    National Market was $45.50 per share. See "Risk  Factors
                                    --  Risk  Factors Relating  to  the Exchange  Offer, the
                                    Spin-off and  PKS Securities  -- Effect  of Spin-off  on
                                    Class  D  Per  Share  Price;  Value  of  Spin-off  Stock
                                    Dependent on Market."
</TABLE>

                                       8
<PAGE>

<TABLE>
<S>                                 <C>
                                    The MFS Preferred Stock is non-transferable for a period
                                    of six years from the date of its issuance with  limited
                                    exceptions,  is convertible into MFS Common Stock at the
                                    option of the holder beginning on the first  anniversary
                                    of the date of issuance thereof and is redeemable at the
                                    option  of  MFS beginning  at the  end of  such six-year
                                    period. MFS does not intend to apply for listing of  the
                                    MFS Preferred Stock on any national securities exchange,
                                    on the Nasdaq National Market or in the over-the-counter
                                    market.  See  "The Spin-off  --  Listing and  Trading of
                                    Spin-off Stock -- MFS Preferred Stock."
Effects of Spin-off on Class D Per
 Share Price; Value of Spin-off
 Stock............................  Although there are no transfer restrictions on the Class
                                    D Stock, there is no established trading market for such
                                    stock, and there has been only limited trading  activity
                                    in  such stock. For the  foreseeable future, there is no
                                    assurance that a holder of Class D Stock will be able to
                                    sell  such  stock  otherwise  than  pursuant  to   PKS's
                                    repurchase  obligation  under  the  PKS  Certificate  of
                                    Incorporation,  as  described   under  "Description   of
                                    Securities -- PKS Stock -- Repurchase Duties." The price
                                    at  which  PKS is  obligated  to repurchase  such stock,
                                    I.E., the Class D Per Share Price, is based on the Class
                                    D Formula Value, which is determined at the beginning of
                                    each fiscal year of PKS and is reduced by the amount  of
                                    any  subsequently  declared  dividend. The  Class  D Per
                                    Share Price will be significantly reduced as a result of
                                    the Spin-off because the value currently attributable to
                                    MFS will no  longer be  included in  the calculation  of
                                    such  price.  The current  Class  D Per  Share  Price is
                                    $60.25. The Class D Per  Share Price after the  Spin-off
                                    will  depend  upon a  number  of factors,  including the
                                    number of shares of Class D Stock issued in the Exchange
                                    Offer and  PKS's determination  of  the portion  of  the
                                    Class  D  Per  Share  Price  attributable  to  MFS.  The
                                    following table sets  forth PKS's estimates  of (i)  the
                                    pro forma Class D Per Share Price after giving effect to
                                    the  Exchange Offer  and the Spin-Off,  (ii) the current
                                    market value of the MFS  Common Stock to be  distributed
                                    in the Spin-off per share of Class D Stock and (iii) the
                                    redemption  value  of  the  MFS  Preferred  Stock  to be
                                    distributed in the Spin-off per share of Class D  Stock,
                                    assuming  in each case that  (x) all of the Exchangeable
                                    Debentures  are  exchanged  for  Offered  Stock  in  the
                                    Exchange  Offer and (y)  the stated number  of shares of
                                    Exchangeable Stock are  exchanged for Class  D Stock  in
                                    the Exchange Offer:
</TABLE>

<TABLE>
<CAPTION>
                                                                           ESTIMATED
                                                                             VALUE
                                                                         OF MFS COMMON     ESTIMATED VALUE
                                                             ESTIMATED       STOCK        OF MFS PREFERRED
                                          ASSUMED NUMBER     PRO FORMA    DISTRIBUTED     STOCK DISTRIBUTED
                                           OF SHARES OF       CLASS D     PER SHARE OF      PER SHARE OF
                                        EXCHANGEABLE STOCK   PER SHARE      CLASS D            CLASS D
                                           EXCHANGED(1)      PRICE(2)(4)  STOCK(3)(4)        STOCK(3)(4)
                                        ------------------   ---------   --------------   -----------------
                                        <S>                  <C>         <C>              <C>
                                            3,000,000         $41.00         $80.54             $0.66
                                            5,000,000         $41.75         $77.81             $0.64
                                        ------------------------------

                                        (1)  The  3,000,000 share assumption reflects PKS's estimate of the
                                             number of shares of Exchangeable  Stock likely to be  tendered
                                             in the Exchange
</TABLE>

                                       9
<PAGE>

<TABLE>
                                        <S>                  <C>         <C>              <C>
                                             Offer, based upon the tender indications that PKS has received
                                             from  members of the PKS Board of Directors and members of the
                                             KCG Board  of Directors,  and PKS's  estimates of  the  likely
                                             number  of additional tenders.  The 5,000,000 share assumption
                                             is set forth solely to illustrate the impact of the tender  of
                                             substantially  more shares  than anticipated by  PKS. PKS does
                                             not believe that a tender  of 5,000,000 shares is likely.  The
                                             3,000,000  figure represents  20.2%, and  the 5,000,000 figure
                                             represents 33.7%, of  the total  number of shares  of Class  B
                                             Stock and Class C Stock outstanding at June 23, 1995.

                                        (2)  Earnings of the Diversified Group for 1995, including earnings
                                             attributable to the settlement of certain litigation described
                                             at  "Recent Developments -- Whitney  Litigation," would not be
                                             reflected in the Class D Per Share Price until 1996.

                                        (3)  For purposes of this table, each share of MFS Common Stock  is
                                             valued  at $45.50, its last reported  sale price on the Nasdaq
                                             National Market as of August 24,  1995, and each share of  MFS
                                             Preferred Stock is valued at its redemption value of $1.00 per
                                             share. There is no assurance as to the market price of the MFS
                                             Common Stock at the Spin-off Date.

                                        (4)   As shown  in the table,  the greater the  number of shares of
                                             Exchangeable Stock exchanged in  the Exchange Offer, the  less
                                             the  reduction in the  Class D Per  Share Price resulting from
                                             the Spin-off. This is attributable to the fact that the amount
                                             of the reduction in the  Class D Formula Value resulting  from
                                             the  Spin-off  will  be a  fixed  amount equal  to  PKS's book
                                             investment in the  Spin-off Stock to  be distributed,  whereas
                                             the  amount of such reduction on  a per share basis (I.E., the
                                             amount of the reduction in the  Class D Per Share Price)  will
                                             decrease  as more  shares of Class  D Stock are  issued in the
                                             Exchange Offer. Also,  as shown in  the table on  page 7,  the
                                             greater  the number of shares  of Exchangeable Stock exchanged
                                             in the  Exchange Offer,  the  fewer the  number of  shares  of
                                             Spin-off  Stock (and hence the less  the value of the Spin-off
                                             Stock) distributed per share of Class D Stock in the Spin-off.
</TABLE>

<TABLE>
<S>                                 <C>
                                    See "Risk  Factors  --  Risk  Factors  Relating  to  the
                                    Exchange  Offer,  the  Spin-off  and  PKS  Securities --
                                    Effect of Spin-off on Class D Per Share Price; Value  of
                                    Spin-off  Stock Dependent  on Market."  If and  when the
                                    Class D Stock becomes Publicly Traded, PKS's  obligation
                                    to  repurchase such stock will  cease. See "Risk Factors
                                    -- Risk  Factors Relating  to  the Exchange  Offer,  the
                                    Spin-Off  and PKS Securities --  Effect of Class D Stock
                                    Becoming Publicly Traded."
Condition to the Spin-off; Right
 to Abandon, Defer or Modify......  The Spin-off will not  be consummated unless the  Ruling
                                    remains substantially in effect. There are no federal or
                                    state  regulatory requirements or approvals that must be
                                    complied  with  or  obtained  as  a  condition  of   the
                                    Spin-off.  If the  PKS Board  determines for  any reason
                                    that such action would  be in the  best interest of  PKS
                                    and  its stockholders, PKS may (i) abandon the Spin-off,
                                    (ii) defer  the consummation  of the  Spin-off or  (iii)
                                    modify  the terms of the Spin-off. The Spin-off will not
                                    necessarily be abandoned in the event the Exchange Offer
                                    is abandoned.  However, if  the Exchange  Offer is  con-
                                    summated,  the  Spin-off  will  be  consummated promptly
                                    thereafter.  See  "The  Spin-off  --  Condition  to  the
                                    Spin-off;  Right of PKS to  Abandon, Defer or Modify the
                                    Spin-off."
</TABLE>

                                       10
<PAGE>

<TABLE>
<S>                                 <C>
Certain Tax Considerations........  Pursuant to the Ruling, for United States federal income
                                    tax purposes the holders of  the Class D Stock will  not
                                    recognize  any gain or  loss on the  distribution of the
                                    Spin-off Stock. In addition,  the holders' tax bases  in
                                    their shares of Class D Stock prior to the Spin-off will
                                    be  apportioned in  the Spin-off between  such stock and
                                    the Spin-off Stock, and the holders' holding periods for
                                    the Spin-off Stock generally will include their  holding
                                    periods  for  the Class  D Stock.  See "The  Spin-off --
                                    Certain United States Federal Income Tax  Considerations
                                    Relating to the Spin-off."
</TABLE>

                           PURPOSE OF EXCHANGE OFFER

    In  connection with the PKS  Board's approval of the  Exchange Offer and its
preliminary approval of the Spin-off, the PKS Board determined that the Spin-off
would be  in  the  best  interest  of the  stockholders  of  PKS  and  would  be
advantageous  to  MFS.  The  PKS  Board  authorized  the  Exchange  Offer  as an
appropriate means of affording the holders of Class B Stock and Class C Stock an
opportunity to  exchange  such stock  for  Class D  Stock,  and the  holders  of
Exchangeable  Debentures an opportunity to  exchange such debentures for Offered
Stock, prior to the proposed Spin-off.  See "Overview -- Background and  Purpose
of the Spin-off; Purpose of the Exchange Offer; Board Proceedings."

                                  RISK FACTORS

    Holders  of Exchangeable  Securities should  carefully consider  the factors
discussed under the section  entitled "Risk Factors"  in this Prospectus  before
making  a decision to participate in the Exchange Offer. Several of such factors
are also  relevant  to  the assessment  by  holders  of Class  D  Stock  of  the
consequences of the Spin-Off.

                                       11
<PAGE>
               SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            PETER KIEWIT SONS', INC.

<TABLE>
<CAPTION>
                                                                                                  PRO FORMA (1)
                                                              HISTORICAL            -----------------------------------------
                                                    ------------------------------                            SIX MONTHS
                                                                      SIX MONTHS     FISCAL YEAR ENDED      ENDED JUNE 30,
                                                     FISCAL YEAR        ENDED        DECEMBER 31, 1994           1995
                                                        ENDED          JUNE 30,     -------------------   -------------------
                                                    --------------  --------------  SCENARIO   SCENARIO   SCENARIO   SCENARIO
                                                     1993    1994    1994    1995    #1 (2)     #2 (2)     #1 (2)     #2 (2)
                                                    ------  ------  ------  ------  --------   --------   --------   --------
                                                                 (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                                 <C>     <C>     <C>     <C>     <C>        <C>        <C>        <C>
RESULTS OF OPERATION:
  Revenue (3)(4)..................................  $2,050  $2,704  $1,194  $1,260   $2,704     $2,704      1,260     $1,260
  Net earnings (5)(6).............................     261     110      45      71      177        177        154        154
FINANCIAL POSITION:
  Total Assets (3)(4).............................   3,634   4,504           3,585                          3,138      3,138
  Current portion of long-term debt (3)(4)........      15      33              14                             13         13
  Long-term debt, less current portion (3)(4).....     462     908             379                            377        377
  Stockholders' equity (7)........................   1,671   1,736           1,842                          1,479      1,479
<FN>
- ------------------------------
(1)  The pro forma results of operations data are computed assuming that the MFS
     Recapitalization,  the Exchange Offer and  the Spin-off were consummated on
     December 26, 1993 and  January 1, 1995 for  the fiscal year ended  December
     31,  1994 and six months  ended June 30, 1995,  respectively. The pro forma
     financial position data as of June 30, 1995 assumes that such  transactions
     were  consummated as  of such  date. The  pro forma  financial data  of PKS
     should be read in conjunction  with PKS' historical consolidated  financial
     statements  and the notes thereto and the "Pro Forma Financial Information"
     included elsewhere or incorporated by reference herein.

(2)  The  pro  forma  information  assumes,  in  two  separate  scenarios,  that
     3,000,000  shares  (Scenario  1)  and  5,000,000  shares  (Scenario  2)  of
     Exchangeable Stock and all the Exchangeable Debentures are exchanged in the
     Exchange Offer. Scenario 1 reflects PKS's estimate of the number of  shares
     of  Exchangeable Stock likely  to be tendered in  the Exchange Offer, based
     upon the tender indications that PKS  has received from members of the  PKS
     Board  of Directors and  members of the  KCG Board of  Directors, and PKS's
     estimates of the  likely number of  additional tenders. Scenario  2 is  set
     forth  solely to illustrate the impact  of the tender of substantially more
     shares than  anticipated by  PKS. PKS  does not  believe that  a tender  of
     5,000,000 shares is likely.

(3)  The PKS Board of Directors preliminarily approved a plan to make a tax-free
     distribution  of its  entire ownership  interest in  MFS to  the holders of
     Class D Stock at a special meeting  on June 9, 1995. The operating  results
     of  MFS have  been classified as  a single  line item on  the statements of
     earnings for all periods  presented. PKS's proportionate  share of the  net
     assets of MFS at June 30, 1995 of $447 million has been reported separately
     on the consolidated balance sheet.

(4)  In  October  1993, PKS  acquired  35% of  the  outstanding shares  of C-TEC
     Corporation that have 57% of the available voting rights. In December 1994,
     PKS increased its  ownership in  C-TEC to 49%  and 58%  of the  outstanding
     shares  and voting rights, respectively. In January 1994, MFS, a subsidiary
     of PKS, issued $500 million of 9.375% Senior Discount Notes.

(5)  In 1993, through two public offerings, PKS sold 29% of the common stock  of
     MFS,  resulting in a  $137 million after-tax gain.  In 1994, additional MFS
     stock transactions resulted  in a  $35 million  after-tax gain  to PKS  and
     reduced its ownership in MFS to 67%.

(6)  On  May 5, 1995, the U.S. government and a subsidiary of PKS entered into a
     settlement agreement with  respect to the  Whitney Benefits litigation.  In
     settlement  of all claims, PKS received $135  million on June 2, 1995 which
     it recognized as income.

(7)  The aggregate redemption value  of common stock at  June 30, 1995 was  $1.7
     billion.
</TABLE>

See "Selected Historical and Pro Forma Financial Data of Peter Kiewit Sons',
Inc." for further information.

                                       12
<PAGE>
               SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                       KIEWIT CONSTRUCTION & MINING GROUP

<TABLE>
<CAPTION>
                                                                                                    PRO FORMA (1)
                                                      HISTORICAL                  --------------------------------------------------
                                      ------------------------------------------
                                                                                     FISCAL YEAR ENDED          SIX MONTHS ENDED
                                          FISCAL YEAR            SIX MONTHS          DECEMBER 31, 1994           JUNE 30, 1995
                                             ENDED             ENDED JUNE 30,     ------------------------  ------------------------
                                      --------------------  --------------------   SCENARIO     SCENARIO     SCENARIO     SCENARIO
                                        1993       1994       1994       1995       #1 (2)       #2 (2)       #1 (2)       #2 (2)
                                      ---------  ---------  ---------  ---------  -----------  -----------  -----------  -----------
                                                             (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                   <C>        <C>        <C>        <C>        <C>          <C>          <C>          <C>
RESULTS OF OPERATIONS:
  Revenue...........................  $   1,783  $   2,175  $     939  $     988   $   2,175    $   2,175    $     988    $     988
  Net earnings......................         80         77         17         34          75           74           33           32
Per Common Share
  Net earnings (3)..................       4.63       4.92       1.10       2.44        5.88         6.84         2.97         3.54
  Dividends (4).....................       0.70       0.90       0.45       0.45      --           --           --           --
  Stock price (5)...................      22.35      25.55      21.90      25.10                                 28.20        28.70
  Book value........................      27.43      31.39      28.19      33.92                                 36.08        38.23
FINANCIAL POSITION:
  Total assets......................        889        967                   967                                   892          841
  Current portion of long-term
   debt.............................          4          3                     2                                     2            2
  Long-term debt, less current
   portion..........................         10          9                     7                                     6            6
  Stockholders' equity (6)..........        480        505                   503                                   429          378
  Formula Value (5).................        391        411
<FN>
- ------------------------------
(1)  The pro forma results of operations data are computed assuming that the MFS
     Recapitalization,  the Exchange Offer and  the Spin-off were consummated on
     December 26, 1993 and  January 1, 1995 for  the fiscal year ended  December
     31,  1994 and six months  ended June 30, 1995,  respectively. The pro forma
     financial position data as of June 30, 1995 assumes that such  transactions
     were  consummated as of such  date. The pro forma  financial data of Kiewit
     Construction & Mining Group should be  read in conjunction with the  Kiewit
     Construction & Mining Group's historical financial statements and the notes
     thereto  and the  "Pro Forma  Financial Information"  included elsewhere or
     incorporated by reference herein.

(2)  The  pro  forma  information  assumes,  in  two  separate  scenarios,  that
     3,000,000  shares  (Scenario  1)  and  5,000,000  shares  (Scenario  2)  of
     Exchangeable Stock and all the Exchangeable Debentures are exchanged in the
     Exchange Offer. Scenario 1 reflects PKS's estimate of the number of  shares
     of  Exchangeable Stock likely  to be tendered in  the Exchange Offer, based
     upon the tender indications that PKS  has received from members of the  PKS
     Board  of Directors and  members of the  KCG Board of  Directors, and PKS's
     estimates of the  likely number of  additional tenders. Scenario  2 is  set
     forth  solely to illustrate the impact  of the tender of substantially more
     shares than  anticipated by  PKS. PKS  does not  believe that  a tender  of
     5,000,000 shares is likely.

(3)  Fully  diluted earnings per share have not been presented because it is not
     materially different from primary earnings per share.

(4)  The 1994 and 1993 dividends include $.45 and $.40 for dividends declared in
     1994 and 1993, respectively, but paid in January of the subsequent year.

(5)  Pursuant to the Certificate of  Incorporation, the stock price and  formula
     value  calculations are  computed annually at  the end of  the fiscal year,
     except that adjustments to the stock price to reflect dividends are made at
     the time such dividends are declared.

(6)  Ownership of the Class B Stock and  Class C Stock is restricted to  certain
     employees  conditioned upon  the execution  of repurchase  agreements which
     restrict the  employees  from  transferring the  stock.  PKS  is  generally
     committed  to purchase all  Class B Stock  and Class C  Stock at the amount
     computed, when put to PKS by a stockholder, pursuant to the Certificate  of
     Incorporation.  The aggregate redemption value of the B&C Stock at June 30,
     1995 was $372 million.
</TABLE>

 See "Selected Historical and Pro Forma Financial Data of Kiewit Construction &
                     Mining Group" for further information.

                                       13
<PAGE>
               SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            KIEWIT DIVERSIFIED GROUP

<TABLE>
<CAPTION>
                                                                                                  PRO FORMA (1)
                                                              HISTORICAL            -----------------------------------------
                                                    ------------------------------
                                                                                     FISCAL YEAR ENDED     SIX MONTHS ENDED
                                                     FISCAL YEAR      SIX MONTHS     DECEMBER 31, 1994       JUNE 30, 1995
                                                        ENDED       ENDED JUNE 30   -------------------   -------------------
                                                    --------------  --------------  SCENARIO   SCENARIO   SCENARIO   SCENARIO
                                                     1993    1994    1994    1995    #1 (2)     #2 (2)     #1 (2)     #2 (2)
                                                    ------  ------  ------  ------  --------   --------   --------   --------
                                                                 (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                                 <C>     <C>     <C>     <C>     <C>        <C>        <C>        <C>
RESULTS OF OPERATIONS:
  Revenue (3)(4)..................................  $  267  $  534  $  255  $  274   $  534     $  534     $  274     $  274
  Net earnings (5)(6).............................     181      33      28      37      102        103        121        122
Per Common Share
  Net earnings (7)................................    9.08    1.63    1.35    1.75     4.73       4.63       5.39       5.23
  Dividends.......................................    0.50    --      --      --      --         --         --         --
  Stock price (8).................................   59.40   60.25   59.40   60.25                          46.45      46.95
  Book value......................................   59.52   60.36   60.10   62.90                          46.45      46.97
FINANCIAL POSITION:
  Total assets (3)(4).............................   2,759   3,549           2,633                          2,261      2,312
  Current portion of long-term debt (3)(4)........      11      30              12                             11         11
  Long-term debt, less current portion (3)(4).....     452     899             372                            371        371
  Stockholders' equity (9)........................   1,191   1,231           1,339                          1,050      1,101
  Formula Value (8)...............................   1,191   1,231
<FN>
- ------------------------------
(1)  The pro forma results of operations data are computed assuming that the MFS
     Recapitalization, the Exchange Offer and  the Spin-off were consummated  on
     December  26, 1993 and January  1, 1995 for the  fiscal year ended December
     31, 1994 and  the six  months ended June  30, 1995,  respectively. The  pro
     forma  financial  position  data as  of  June  30, 1995  assumes  that such
     transactions were consummated as of such date. The pro forma financial data
     of Kiewit Diversified Group should be  read in conjunction with the  Kiewit
     Diversified  Group's historical financial statements  and the notes thereto
     and  the   "Pro  Forma   Financial  Information"   included  elsewhere   or
     incorporated by reference herein.
(2)  The  pro  forma  information  assumes,  in  two  separate  scenarios,  that
     3,000,000  shares  (Scenario  1)  and  5,000,000  shares  (Scenario  2)  of
     Exchangeable Stock and all the Exchangeable Debentures are exchanged in the
     Exchange  Offer. Scenario 1 reflects PKS's estimate of the number of shares
     of Exchangeable Stock likely  to be tendered in  the Exchange Offer,  based
     upon  the tender indications that PKS has  received from members of the PKS
     Board of Directors  and members of  the KCG Board  of Directors, and  PKS's
     estimates  of the  likely number of  additional tenders. Scenario  2 is set
     forth solely to illustrate the impact  of the tender of substantially  more
     shares  than anticipated  by PKS.  PKS does  not believe  that a  tender of
     5,000,000 shares is likely.
(3)  The PKS Board of Directors preliminarily approved a plan to make a tax-free
     distribution of its  entire ownership  interest in  MFS to  the holders  of
     Class  D Stock at a special meeting  on June 9, 1995. The operating results
     of MFS have  been classified as  a single  line item on  the statements  of
     earnings  for all  periods presented. PKS'  proportionate share  of the net
     assets of MFS at June 30, 1995 of $447 million has been reported separately
     on the balance sheet.
(4)  In October 1993, the Group acquired 35% of the outstanding shares of  C-TEC
     Corporation that have 57% of the available voting rights. In December 1994,
     the  Group  increased  its  ownership  in  C-TEC  to  49%  and  58%  of the
     outstanding shares and  voting rights, respectively.  In January 1994,  MFS
     issued $500 million of 9.375% Senior Discount Notes.
(5)  In  1993, through two  public offerings, the  Group sold 29%  of the common
     stock of  MFS,  resulting  in  a $137  million  after-tax  gain.  In  1994,
     additional  MFS stock transactions resulted in a $35 million after-tax gain
     to the Group and reduced its ownership in MFS to 67%.
(6)  On May 5, 1995, the U.S. government  and a subsidiary of the Group  entered
     into   a  settlement  agreement  with   respect  to  the  Whitney  Benefits
     litigation. In settlement of all claims, the Group received $135 million on
     June 2, 1995 which it recognized as income.
(7)  Fully diluted earnings per share have not been presented because it is  not
     materially different from primary earnings per share.
(8)  Pursuant  to the Certificate of Incorporation,  the stock price and formula
     value calculations are  computed annually at  the end of  the fiscal  year,
     except that adjustments to the stock price to reflect dividends are made at
     the time such dividends are declared.
(9)  Unless Class D Stock becomes Publicly Traded, PKS is generally committed to
     purchase all Class D Stock at the amount determined, in accordance with the
     Certificate  of  Incorporation,  when  put to  PKS  by  a  stockholder. The
     aggregate redemption value of the Class D  Stock at June 30, 1995 was  $1.3
     billion.
</TABLE>

  See "Selected Historical and Pro Forma Financial Data of Kiewit Diversified
                        Group" for further information.

                                       14
<PAGE>
                      SUMMARY CONSOLIDATED FINANCIAL DATA
                      OF MFS COMMUNICATIONS COMPANY, INC.
    The  development and acquisition by MFS  of its networks and services during
the periods reflected  below materially  affect the comparability  of that  data
from  one period to another. The  following selected consolidated financial data
should be read in conjunction with the Consolidated Financial Statements of  MFS
and  the notes thereto, incorporated by reference herein. No cash dividends were
paid in any of the periods presented below.

<TABLE>
<CAPTION>
                                                                                  FISCAL YEAR ENDED              SIX MONTHS
                                                                        -------------------------------------      ENDED
                                                                           1992         1993       1994 (1)    JUNE 30, 1995
                                                                        -----------  -----------  -----------  --------------
                                                                            (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                                     <C>          <C>          <C>          <C>
STATEMENT OF OPERATIONS DATA:
  Revenue:
  Telecommunications services.........................................     $ 47,585     $ 70,048    $ 228,707      $220,867
  Network systems integration.........................................       61,122       71,063       58,040        37,478
                                                                        -----------  -----------  -----------  --------------
    Total.............................................................      108,707      141,111      286,747       258,345
Costs and expenses:
  Operating expenses..................................................       76,667      102,905      273,431       259,017
  Depreciation and amortization.......................................       20,544       34,670       73,869        60,721
  General and administrative expenses.................................       23,267       34,989       75,576        53,724
                                                                        -----------  -----------  -----------  --------------
    Total.............................................................      120,478      172,564      422,876       373,462
                                                                        -----------  -----------  -----------  --------------
Loss from operations..................................................      (11,771)     (31,453)    (136,129)     (115,117)
Other income (expense) net............................................         (792)       8,464      (17,175)      (13,419)
                                                                        -----------  -----------  -----------  --------------
Loss before income taxes..............................................      (12,563)     (22,989)    (153,304)     (128,536)
Income tax benefit (expense)..........................................         (566)       7,220        2,103          (200)
                                                                        -----------  -----------  -----------  --------------
  Net loss............................................................     $(13,129)    $(15,769)   $(151,201)    $(128,736)
                                                                        -----------  -----------  -----------  --------------
                                                                        -----------  -----------  -----------  --------------
Loss per share (2) ...................................................      $(0.30)      $(0.30)      $(2.42)         $(2.00)
                                                                        -----------  -----------  -----------  --------------
                                                                        -----------  -----------  -----------  --------------
Number of shares (2)..................................................   44,085,000   52,882,000   62,437,000    64,423,000
                                                                        -----------  -----------  -----------  --------------
                                                                        -----------  -----------  -----------  --------------
Ratio of earnings to combined fixed charges and preferred stock
 dividends (3)........................................................      --           --           --            --

OTHER DATA:
  EBITDA (4)..........................................................     $  8,773     $  3,217    $ (62,260)   $  (54,396)
  Net cash provided by (used in) operating activities.................       28,741       32,946      (10,422)      (66,833)
  Capital expenditures, including acquisitions of businesses, net of
   cash acquired......................................................      110,171      128,651      576,711       264,293

STATISTICAL DATA (5):
  Circuits in service (6).............................................      589,130      947,391    1,713,430     2,241,601
  Buildings connected.................................................        1,101        1,583        2,754         3,698
  Route miles (7).....................................................          858        1,298        2,405         2,702
  Fiber miles (8).....................................................       38,595       62,154      107,919       136,060
  Switches............................................................      --                 1           12            12

BALANCE SHEET DATA:
  Networks and equipment..............................................     $243,243     $370,334   $  787,453    $1,055,581
  Total assets........................................................      363,299      906,937    1,584,546     1,826,833
  Long-term debt, less current portion................................          169          143      548,333       596,958
  Stockholders' equity................................................      298,516      811,105      770,103       963,466
<FN>
- ------------------------------
(1)  Reflects the acquisition of Centex Telemanagement, Inc. as of May 18, 1994,
     Cylix Communications Corporation as of November 1, 1994 and RealCom  Office
     Communications, Inc. as of November 14, 1994.
(2)  See  Note 2 to  the Consolidated Financial  Statements, which describes the
     calculation of loss per share.
(3)  For each of the three years ended December 31, 1994 and for the six  months
     ended  June 30,  1995, earnings  were insufficient  to cover  fixed charges
     during the  periods shown  by the  amount of  loss before  income taxes  of
     $12,563,000, $22,989,000, $153,304,000 and $128,536,000, respectively.
(4)  EBITDA   consists  of  earnings  (loss)   before  interest,  income  taxes,
     depreciation  and   amortization.   EBITDA   is  commonly   used   in   the
     communications  industry  to analyze  companies on  the basis  of operating
     performance, leverage and  liquidity. EBITDA is  not intended to  represent
     operating  results  or  cash  flows  as  determined  by  generally accepted
     accounting principles. See Consolidated Statements of Cash Flows.
(5)  Information presented as  of the end  of the period  indicated and  derived
     from non-financial records prepared by MFS which are not audited.
(6)  All circuits have been expressed as voice grade equivalent circuits.
(7)  Route miles refers to the number of miles of the telecommunications path in
     which the fiber optic cables are installed.
(8)  Fiber  miles  refers  to the  number  of route  miles  installed (excluding
     pending installations) along  a telecommunications path  multiplied by  the
     number of fibers along that path.
</TABLE>

                                       15
<PAGE>
                                  RISK FACTORS

    Participation  in the Exchange Offer by  a holder of Exchangeable Securities
is voluntary.  Before tendering  Exchangeable Securities  for Offered  Stock,  a
holder  of  Exchangeable  Securities  should carefully  consider  the  risks and
benefits of participation in the Exchange Offer, including consideration of  the
consequences  of  a  decision  not  to participate  in  the  Exchange  Offer, an
assessment of the investment characteristics of the Exchangeable Securities held
by such holder, on the one hand,  and the Offered Stock and the Spin-off  Stock,
on   the  other,  and  consideration  of  the  other  information  contained  or
incorporated by reference in this Prospectus.  Several of such factors are  also
relevant  to the assessment by  holders of Class D  Stock of the consequences of
the Spin-off.

                  RISK FACTORS RELATING TO THE EXCHANGE OFFER,
                        THE SPIN-OFF AND PKS SECURITIES

CERTAIN CONSEQUENCES OF DECISION NOT TO EXCHANGE

    If the Spin-off occurs, each holder of record of shares of Class D Stock  as
of  the Spin-off Date would retain such  stock and would receive in addition MFS
Common Stock and  MFS Preferred  Stock. PKS  expects that,  at the  time of  the
Spin-off,  the market price  of the MFS  Common Stock distributed  in respect of
each share of Class D  Stock will be substantially in  excess of the value  then
attributable  to MFS  in the  determination of  the Class  D Per  Share Price in
accordance with the PKS Certificate  of Incorporation. For example, assuming  in
two alternative scenarios that (i) 3,000,000 shares and (ii) 5,000,000 shares of
Exchangeable  Stock, and  in each case  all of the  Exchangeable Debentures, are
exchanged in the  Exchange Offer, the  market price of  the estimated number  of
shares  of MFS Common Stock to be distributed  per share of Class D Stock (based
on the last reported sale price of  the MFS Common Stock on the Nasdaq  National
Market as of August 24, 1995) would be $80.54 and $77.81, respectively, compared
to the respective estimated values of approximately $19.25 and $18.50 that would
be  attributable to  MFS under  such scenarios  for purposes  of determining the
Class D  Per Share  Price. See  the  tables under  "Overview --  The  Spin-off."
Accordingly,  although there is no  assurance as to the  market price of the MFS
Common Stock at the Spin-off  Date, the sum of (i)  the market value of the  MFS
Common  Stock distributed to a holder of  Class D Stock plus (ii) the redemption
value of the MFS Preferred Stock distributed  to a holder of Class D Stock  plus
(iii)  the aggregate Class D Per Share Price  of such holder's shares of Class D
Stock after giving  effect to the  Spin-off is expected  to be substantially  in
excess of the aggregate Class D Per Share Price of such holder's shares of Class
D  Stock before giving effect  to the Spin-off. See  "Overview -- The Spin-Off."
This represents  a  one-time benefit  that  holders of  Exchangeable  Stock  who
participate  in the Exchange Offer will receive  in respect of the Class D Stock
issued to them in the Exchange Offer.  Holders of Exchangeable Stock who do  not
exchange  such  stock  pursuant to  the  Exchange  Offer will  not  receive this
anticipated benefit with respect to Exchangeable Stock held by them.

    A holder of Exchangeable Debentures  who participates in the Exchange  Offer
would  receive on the  exchange of such Exchangeable  Debentures the same number
and classes of PKS stock that the holder would later be entitled to receive upon
conversion of  such  Exchangeable Debentures  in  accordance with  their  stated
conversion  terms. A holder of Exchangeable  Debentures who does not participate
in the Exchange Offer would  not have an opportunity  to receive such PKS  stock
until  the scheduled conversion period provided for in the holder's Exchangeable
Debentures. Further, PKS will not retain  any MFS Common Stock or MFS  Preferred
Stock  after the Spin-off, and therefore would not be able to distribute any MFS
Common Stock  or  MFS Preferred  Stock  upon  a subsequent  conversion  of  such
Exchangeable  Debentures during their scheduled conversion period. The PKS Board
of Directors  has  not  made any  provision  for  any other  adjustment  to  the
Exchangeable  Debentures to reflect the Spin-off. In addition, the formula value
of the stock  receivable in  exchange for  each Exchangeable  Debenture will  be
substantially    greater   than   the   face    amount   of   the   Exchangeable

                                       16
<PAGE>
Debenture,  which  a  holder  would  not  otherwise  receive  until  the   tenth
anniversary  of  the  date  of  the  issuance  of  such  Exchangeable Debenture.
Accordingly, tender of Exchangeable Debentures  in the Exchange Offer will  most
likely result in receipt of the greatest value by the debentureholder.

CERTAIN INVESTMENT CHARACTERISTICS OF EXCHANGEABLE STOCK AND CLASS D STOCK

    EXCHANGEABLE  STOCK.   Among the investment  characteristics of  the Class B
Stock and  the  Class  C  Stock  that should  be  considered  are  the  holder's
assessment  of (i) the potential for  continued dividend income from such stock,
and the potential for continued  growth and the risk of  a decline in the  Class
B&C  Per Share Price of  such stock, all of which  are dependent on the business
prospects for the Construction & Mining Group and (ii) the terms of the Class  B
Stock  and  Class C  Stock  described under  "Description  of Securities  -- PKS
Stock."

    CLASS D STOCK.   Among the investment characteristics  of the Class D  Stock
that  should be  considered are  (i) the  limited history  of dividends  on such
stock, (ii) the potential for  future dividends on the  Class D Stock, which  is
dependent on the business prospects for the Diversified Group, and the fact that
the  PKS Board  of Directors announced  in August  1993 that, in  light of heavy
capital commitments, PKS did not intend to pay dividends on the Class D Stock in
the foreseeable future, (iii) the potential  for growth and the risk of  decline
in  the  Class D  Per Share  Price of  such  stock, which  are dependent  on the
business prospects  for the  Diversified Group,  (iv) the  possibility that  the
annual  changes in  the Class D  Formula Value, on  which the Class  D Per Share
Price is based, may be less readily  predictable than the annual changes in  the
Class  B&C Formula Value,  on which the Class  B&C Per Share  Price is based, in
view of  the diverse  and generally  less mature  businesses that  comprise  the
Diversified  Group as compared  to the Construction  & Mining Group  and (v) the
terms of the  Class D Stock  described under "Description  of Securities --  PKS
Stock."   In  addition,  holders  of  Exchangeable  Stock  should  consider  the
anticipated risks and benefits of  the Spin-off for the  holders of the Class  D
Stock  in the context of all the  other factors discussed in this "Risk Factors"
section, including all of the  special considerations associated with  ownership
of MFS securities discussed below under "Risk Factors Relating to MFS" and under
"Description of Securities -- MFS Common Stock" and "-- MFS Preferred Stock."

COMPANY POLICY ON FUTURE SALES OF CLASS C STOCK

    PKS  offers Class C Stock for sale  to employees annually. The PKS Board and
management select the  employees to  whom Class  C Stock  is to  be offered  and
determine  the number  of shares to  be offered  to each such  employee based on
consideration of a wide  range of factors, including  the employee's effort  and
relative  contribution to  PKS's economic  performance; the  employee's level of
responsibility; the potential displayed by  the employee; the employee's  length
of service; and the amount of Class C Stock presently owned by the employee.

    If  an employee  exercises his  or her  right under  the PKS  Certificate of
Incorporation to sell Class C Stock back to PKS or to convert Class C Stock into
Class D Stock during any year,  the PKS Board and management generally  consider
such stock sales and conversions, in addition to the factors described above, in
determining  whether to  offer Class  C Stock to  the employee  in the following
year, and if Class C  Stock is offered to such  employee, the amount of Class  C
Stock  so offered. Although the  sale or conversion of Class  C Stock is not the
only factor taken  into account in  those cases, PKS  generally has declined  to
sell  Class C Stock  to an employee  in the year  following a year  in which the
employee has sold Class C Stock or converted Class C Stock into Class D Stock.

    The PKS Board and management expect  to use similar criteria in  determining
the  employees to  whom Class C  Stock is offered,  and the number  of shares of
Class C Stock offered to each  such employee, in 1996. Accordingly, PKS  expects
that  the PKS Board  and management generally  will not offer  Class C Stock for
sale in 1996 to a holder  of Class C Stock who  has exchanged Class C Stock  for
Class D Stock pursuant to the Exchange Offer.

                                       17
<PAGE>
NO INTENTION TO REPLACE EXCHANGED CLASS B STOCK OR CLASS C STOCK THROUGH FUTURE
OFFERINGS

    PKS  will not  change the criteria  by which  it offers Class  C Stock under
PKS's stock ownership  program for the  purpose of enabling  persons who  tender
Exchangeable  Stock in the Exchange Offer to restore the level of their holdings
of such stock through future purchases.

CERTAIN UNITED STATES FEDERAL INCOME TAX CONSEQUENCES RELATING TO THE EXCHANGE
OFFER

    If the exchange  of Offered  Stock for  Exchangeable Stock  in the  Exchange
Offer   constitutes,  for   United  States   federal  income   tax  purposes,  a
"recapitalization" within the  meaning of Section  368(a)(1)(E) of the  Internal
Revenue Code of 1986, as amended (the "Code"), then, among other things, no gain
or  loss will  be recognized  by a  holder of  Exchangeable Stock  who elects to
participate in  the  Exchange Offer  upon  the  exchange of  Offered  Stock  for
Exchangeable  Stock. PKS has  been advised by Sutherland,  Asbill & Brennan, its
regular outside tax counsel, that, although the issue is not free from doubt, in
the opinion of  such counsel,  the exchange  of Offered  Stock for  Exchangeable
Stock  in the Exchange Offer should constitute, for United States federal income
tax purposes, a recapitalization within  the meaning of section 368(a)(1)(E)  of
the  Code. Accordingly,  the exchange  of Offered  Stock for  Exchangeable Stock
should be tax-free to participating holders from a United States federal  income
tax  perspective,  although there  is an  element  of uncertainty  regarding the
federal income tax  consequences of  such exchange.  In the  event the  Exchange
Offer is a taxable transaction for United States federal income tax purposes (an
outcome  the management of PKS believes is unlikely), then participating holders
would recognize gain or loss on  the exchange of Offered Stock for  Exchangeable
Stock.  See  "The Exchange  Offer --  Certain United  States Federal  Income Tax
Considerations Relating to the Exchange Offer."

TRANSFER FROM CONSTRUCTION & MINING GROUP

    Whenever Class B Stock or Class C Stock is converted into Class D Stock,  it
has  been  PKS's  practice  (although  the  terms  of  the  PKS  Certificate  of
Incorporation do  not  require  that  it  do so)  to  transfer  funds  from  the
Construction  & Mining Group to the Diversified Group, in an amount equal to the
aggregate Class B&C Per Share  Price of the Class B  Stock and Class C Stock  so
converted, in order that the conversion will not have the effect of diluting the
Class  D  Formula  Value.  PKS  will  take  the  same  action  with  respect  to
Exchangeable Stock exchanged for Class D Stock in the Exchange Offer. Thus,  the
more  Exchangeable Stock that is  exchanged, the greater the  funds that will be
transferred from the Construction & Mining  Group to the Diversified Group.  For
example,  if 3,000,000 shares of Class B  Stock and Class C Stock were exchanged
for Class D Stock pursuant to the Exchange Offer, PKS would transfer $75,300,000
from the Construction  & Mining  Group to  the Diversified  Group; if  5,000,000
shares  of Class  B Stock  and Class C  Stock were  exchanged for  Class D Stock
pursuant to  the  Exchange  Offer,  PKS would  transfer  $125,500,000  from  the
Construction  & Mining Group to the Diversified  Group. Such transfer may have a
negative impact on the liquidity of the Construction & Mining Group. PKS expects
that the Construction  & Mining Group  will have sufficient  funds, either  from
cash  on  hand or  cash flow  from operations,  to make  any such  transfer. If,
however, more shares of Class B Stock and Class C Stock were tendered for  Class
D  Stock than currently  anticipated, such funds  might not to  be sufficient to
fund all of  such transfers, and  the Diversified Group  might defer receipt  of
such  transfer on a  short-term, interest-bearing basis.  However, the PKS Board
does not intend to cause the Diversified Group to provide any such deferral on a
long-term basis. If the Construction & Mining  Group is unable to fund all  such
transfers  within a short  period after the  Spin-off, PKS intends  to cause the
Construction & Mining Group to borrow from third parties the funds necessary  to
make  such transfers.  PKS does not  foresee any circumstance  under which those
transfers would not ultimately be made. In any event, PKS has reserved the right
to impose a limit on the amount  of Exchangeable Stock that may be exchanged  in
the  Exchange Offer, and the liquidity of the Construction & Mining Group is one
factor the PKS Board of Directors  would consider in determining whether such  a
limit were appropriate. See "The Exchange Offer -- Terms of the Exchange Offer."

                                       18
<PAGE>
BUSINESSES OF CONSTRUCTION & MINING GROUP

    The  Exchange Offer and the  Spin-off will not affect  the businesses of the
Construction &  Mining  Group, except  to  the  extent such  businesses  may  be
affected by the funds transfer described above under "Transfer from Construction
&  Mining Group."  Moreover, as  a result  of the  making of  such transfer, the
Exchange Offer and the  Spin-off will have  no effect on the  Class C Per  Share
Price.  Accordingly,  holders of  Exchangeable  Securities (other  than  Class D
Debentures) who elect not  to participate in the  Exchange Offer will retain  an
indirect  interest in  the Construction  & Mining  Group, and  the prospects for
future appreciation, or the risk  of a decline, in the  Class C Per Share  Price
will  depend upon the success of the construction and mining businesses in which
the Construction & Mining Group currently  engages and chooses to engage in  the
future.

    The  risks associated with the businesses of the Construction & Mining Group
include all of the risks attendant  to any construction business, including  the
impact  on  the  construction  industry  of  changes  in  national  and regional
economies, the  cyclical  nature  of  the construction  business,  the  risk  of
bankruptcy  of, or  non-payment by,  owners, the risk  of cost  overruns and job
losses on particular projects, risks  associated with increasing competition  in
the construction business, the risks of foreign construction operations, and the
costs and restraints imposed upon operations by regulatory requirements.

EFFECT OF SPIN-OFF ON CLASS D PER SHARE PRICE; VALUE OF SPIN-OFF STOCK DEPENDENT
ON MARKET

    Because  approximately one-third of  the current Class D  Per Share Price of
$60.25 is attributable to MFS, the Class D Per Share Price will be significantly
reduced when the Spin-off  is consummated. See "Overview  -- The Spin-off."  The
amount  of such reduction will depend upon the number of Exchangeable Securities
exchanged in  the  Exchange Offer.  For  example, assuming  in  two  alternative
scenarios  that (i) 3,000,000  shares and (ii)  5,000,000 shares of Exchangeable
Stock, and in each case all of the Exchangeable Debentures, are exchanged in the
Exchange Offer, the estimated Class D Per Share Price after giving effect to the
Spin-off would be $41.00 and $41.75,  respectively. Accordingly, as a result  of
the  Spin-off, the price at  which holders of Class  D Stock can thereafter sell
such stock to PKS will be significantly reduced. Although there are no  transfer
restrictions  on the Class D  Stock, there is no  established trading market for
such stock, and there has been only limited trading activity in such stock.  For
the  foreseeable future, there  is no assurance  that a holder  of Class D Stock
will be able  to sell  such stock otherwise  than pursuant  to PKS's  repurchase
obligation under the PKS Certificate of Incorporation. See "-- Effect of Class D
Stock Becoming Publicly Traded," below.

    PKS  will have no repurchase obligation  with respect to the Spin-off Stock.
The ability of a holder of MFS Common Stock to realize value upon a sale of such
stock will be entirely dependent on the market for MFS Common Stock. The  market
price  of MFS Common  Stock has fluctuated significantly  since MFS Common Stock
began public trading in May 1993. Since the commencement of public trading,  MFS
Common  Stock has traded  as high as $57.75  per share (in  the third quarter of
1993) and as low as $20.50 per share (in the second quarter of 1994); during the
52 week period preceding August  24, 1995, the high  and low trading prices  per
share  were $47.25  and $28.75, respectively.  See "-- Risk  Factors Relating to
MFS" below for a discussion of certain factors that may affect the market  price
of MFS Common Stock. The MFS Preferred Stock is non-transferable for a period of
six years from its date of issuance with limited exceptions. See "Description of
Securities -- MFS Preferred Stock."

BUSINESSES OF DIVERSIFIED GROUP

    After  the Spin-off  is consummated, MFS  will be independent  of PKS rather
than being part of the Diversified Group. Accordingly, the Class D Stock will no
longer represent an indirect interest in the business of MFS, and the  prospects
for  future  appreciation in  the Class  D Per  Share Price  will depend  on the
remaining businesses  of the  Diversified  Group and  any other  businesses  the
Diversified Group may choose to enter in the future, as well as on other factors
that affect, and will continue to affect, such prospects.

                                       19
<PAGE>
    The  Diversified Group currently engages in three principal businesses other
than the businesses of MFS: coal  mining, through KDG's wholly owned  subsidiary
Kiewit  Coal Properties Inc. ("KCP"); independent power production, both through
KDG's ownership of a significant minority interest in California Energy  Company
Inc.  ("CECI") and through  the project development  and ownership activities of
KDG's  wholly  owned  subsidiary,  Kiewit   Energy  Company  ("KEC");  and   the
telecommunications  business, through KDG's ownership  of a controlling interest
in C-TEC Corporation ("C-TEC"). See "Business" in the PKS Annual Report on  Form
10-K  for the  year ended  December 31, 1994  incorporated by  reference in this
Prospectus for a discussion of the Diversified Group's principal businesses.

    A holder of Exchangeable Securities should carefully consider the  following
matters  relating to  the principal businesses  of the  Diversified Group before
deciding to tender Exchangeable Securities pursuant to the Exchange Offer.  Such
matters  are also relevant to the assessment by  holders of Class D Stock of the
consequences of the Spin-off.

    DIVERSIFIED GROUP CASH  FLOWS.  The  Diversified Group derives  most of  its
operating cash flow from its coal mining business. During 1994, for example, the
Diversified  Group received $71 million, or  substantially all, of its after-tax
net operating cash flow from its coal mining operations. Although that  business
currently  produces  substantial  cash  flow,  those  cash  flows  will  decline
substantially over the next few years. For example, after-tax net operating cash
flow from coal sales under long-term purchase contracts, which was approximately
$55 million in 1994, is expected to decline to approximately $39 million by 1998
and to approximately $10 million by  2002, and will decline further  thereafter.
These  decreases are primarily due to a  decrease in amounts of coal required to
be purchased under those contracts.  Both CECI and C-TEC reinvest  substantially
all of their operating cash flows, and neither CECI nor C-TEC is expected to pay
dividends  to KDG  in the foreseeable  future. As  a result, the  ability of the
Diversified Group to fund  future business opportunities  will depend, in  part,
upon  its ability to invest its currently  available cash and the remaining coal
mining cash  flows  in  businesses that  will  be  able to  generate  cash  from
operations.

    PROJECT  DEVELOPMENT BUSINESSES.   CECI  and KEC,  through its international
power project development joint venture with  CECI, are actively engaged in  the
business  of developing, constructing, owning  and operating new power projects.
These development  activities  can  require substantial  expenditures  before  a
project  is determined  to be  feasible, economically  attractive or  capable of
being financed. The future growth of CECI's and KEC's businesses depends on  the
success  of such  developmental endeavors,  and there  can be  no assurance that
development  efforts  on  any  particular  project,  or  in  general,  will   be
successful.

    CECI  OPERATING REVENUES.  After the Spin-off, KEC's investment in CECI will
represent approximately 19% of the Class D Formula Value. CECI currently depends
on a series  of contracts  with a  single customer,  Southern California  Edison
("SCE"),  for substantially all  of its operating  revenues. The contract prices
payable for energy supplied by CECI to  SCE are fixed under those contracts  for
set periods (which periods end from 1997 to 2000 for CECI's principal contract),
and are then based on SCE's published "avoided cost of energy." For example, for
September  1994 the time period-weighted average of SCE's avoided cost of energy
was 2.2 CENTS per  kwh, compared to the  time period-weighted average  September
1994   selling  prices  for  energy  under  CECI's  contracts  of  approximately
10.9 CENTS per kwh.  Thus, the revenues generated  by each of CECI's  facilities
operating  under its current contracts are likely to decline significantly after
the expiration of the fixed-price period.

    LEVERAGE.  Although KDG does not have substantial indebtedness, CECI and, to
a lesser extent, C-TEC have higher  levels of indebtedness. In particular,  CECI
has  incurred  substantial  indebtedness, both  at  the corporate  level  and to
finance development of  power projects.  In addition,  KEC expects  to use  debt
financing  for a  significant portion  of the  costs of  the international power
projects to be  developed with CECI.  Although debt financing  may increase  the
equity  returns  to CECI,  C-TEC  and KEC  from  their activities,  it  may also
increase the risk associated with those  activities, and the abilities of  those
companies to grow in the future.

                                       20
<PAGE>
    COMPETITION.    Each  of  KCP,  CECI and  C-TEC  is  subject  to substantial
competition in their separate areas of business. For example, KCP is subject  to
substantial  competition from  other producers of  coal, and the  end of certain
long-term coal purchase arrangements will substantially increase the competitive
pressures to which KCP is subject. Although  most of CECI's power sales are  the
subject  of long-term  power purchase  contracts, it  is subject  to substantial
competition  in   obtaining  new   contracts  and   power  project   development
opportunities,  both  in the  U.S. and  abroad. C-TEC  is subject  to increasing
levels of  competition in  the  rapidly changing  and  evolving sectors  of  the
telecommunications industry in which it competes.

    REGULATION.   Each of KCP,  CECI and C-TEC is  subject to varying degrees of
federal, state, local and international regulation. KCP, for example, is subject
to strict environmental regulation in its  coal mining operations. CECI is  also
subject  to environmental  regulation in the  operation of its  power plants, as
well as various regulatory schemes or governmental contracts that can affect the
pricing and sales of electric power. C-TEC's businesses are subject to extensive
federal, state and local regulations  that have changed significantly in  recent
years  and are  likely to  continue to  change in  the future.  There can  be no
assurances that  the  Diversified  Group's  businesses  will  not  be  adversely
impacted  by  the  costs of  complying  with  current regulations  or  by future
regulatory changes.

    INTERNATIONAL  OPERATIONS.     Both   CECI   and  C-TEC   have   significant
international  operations.  CECI's  primary  project  development  focus  is  on
projects located in the Philippines and Indonesia.
C-TEC recently acquired  a 40%  interest in Megacable,  Mexico's second  largest
cable television company. In addition, KEC's primary business focus is its joint
venture   with  CECI  for  the  development  of  international  power  projects.
International operations and investments can be  subject to factors that do  not
affect   domestic   operations,   including  foreign   political   and  economic
developments, currency exchange risks, currency repatriation risks, foreign  tax
concerns,  political  instability,  expropriation  and  uncertainty  surrounding
domestic and  foreign  laws  and  policies  affecting  foreign  investments.  In
addition, the Diversified Group's international operations are concentrated in a
few  countries  (the Philippines,  Indonesia and  Mexico). Adverse  economic and
political developments in  these countries could  disproportionately affect  the
businesses of the Diversified Group.

    MANAGEMENT.   The Diversified Group has placed a substantial emphasis on the
abilities of key managers in making its investments in CECI and C-TEC. The  loss
of  one or more of the key managers of those businesses could have a significant
effect on those businesses and on the performance of the Diversified Group as  a
whole.

    CECI  MINORITY INTEREST.  KCP is the  sole owner of, or the managing partner
of, its coal mining operations, and  KDG holds a controlling interest in  C-TEC.
KDG,  however, holds only a  minority share, albeit a  significant one, in CECI,
and has the right to elect only three of the fourteen members of CECI's board of
directors. CECI is  the managing  partner of the  independent power  development
joint  venture between KEC and CECI. As a  result of these factors, KDG may have
less control over its independent power  production businesses than it has  over
its other Diversified Group businesses.

EFFECTS OF THE EXCHANGE OFFER AND THE SPIN-OFF ON LOANS SECURED BY PKS STOCK
    The  MFS Common Stock,  unlike PKS stock,  constitutes "margin stock" within
the meaning of  various Federal  Reserve regulations restricting  the amount  of
credit  that a lender may extend in  connection with the purchase or carrying of
margin stock where  the loan  is, or  under such  regulations is  deemed to  be,
secured  directly or  indirectly by margin  stock. Such  regulations also impose
certain procedural requirements in connection with such loans.

    In addition, a  lender that  has extended credit  secured by  PKS stock,  in
making  decisions as to how much credit to extend against the collateral held by
such lender, may assign a different loan-to-value ratio to the Class D Stock  as
compared  to the Class  B Stock and  Class C Stock.  A lender may  also assign a
different loan-to-value ratio to the Class D Stock and the Spin-off Stock  after
the  Spin-off as  compared to  the loan-to-value ratio  assigned to  the Class D
Stock before the  Spin-off. Further, the  Class D  Per Share Price  may be  less
readily  predictable than the  Class B&C Per Share  Price has historically been,
and the market value  of the MFS  Common Stock is expected  to be more  volatile
than

                                       21
<PAGE>
the  Class D Per Share Price has historically been. A decline in the Class D Per
Share Price of Class D Stock  pledged to a lender or  a decline in the value  of
MFS  Common Stock pledged to a lender  could result in the lender requiring that
the borrower pledge additional collateral.

    If Exchangeable Securities  being exchanged pursuant  to the Exchange  Offer
are   pledged  to  a  lender,  Offered  Stock  received  in  exchange  for  such
Exchangeable Securities is probably also subject  to the pledge under the  terms
of  the  loan  documentation  between  the  securityholder  and  the  lender. In
addition, if Class  D Stock (including  Class D Stock  received in exchange  for
Exchangeable  Securities in the Exchange Offer) is  pledged to a lender, some or
all of the Spin-off Stock received in  the Spin-off is probably also subject  to
the  pledge. As a  result, a securityholder  may be required  to deliver Offered
Stock received in exchange for Exchangeable Securities in the Exchange Offer and
Spin-off Stock received  in the  Spin-off to such  securityholder's lender  upon
receipt of that stock.

    IN  LIGHT OF THE FOREGOING, PERSONS WHO HAVE PLEDGED EXCHANGEABLE SECURITIES
TO A LENDER AND WHO ARE CONSIDERING PARTICIPATION IN THE EXCHANGE OFFER, OR  WHO
HAVE PLEDGED CLASS D STOCK TO A LENDER, SHOULD CONSULT WITH THE LENDER AS TO THE
EFFECT OF THE EXCHANGE OFFER AND THE SPIN-OFF ON THEIR LOAN ARRANGEMENTS.

EFFECT OF CLASS D STOCK BECOMING PUBLICLY TRADED
    Under  the PKS  Certificate of  Incorporation, the  right of  the holders of
Class D Stock to require PKS to repurchase such stock terminates when the  Class
D Stock becomes Publicly Traded. In that event, the ability of a holder of Class
D Stock to realize value upon a sale of such stock will be entirely dependent on
whatever market then exists for the Class D Stock. Moreover, the PKS Certificate
of  Incorporation provides that, after the Class D Stock is Publicly Traded, any
subsequent conversion of Class C  Stock into Class D  Stock would be based  upon
the  market value of the Class D Stock, rather than the Class D Per Share Price.
Accordingly, holders making  such conversions would  not be able  to derive  any
actual  or potential benefit from the excess, if any, of the market value of the
Class D Stock  over the Class  D Per Share  Price, or any  excess of the  market
value of the businesses comprising the Diversified Group over the value assigned
to   the  assets  of  the  Diversified   Group  under  the  PKS  Certificate  of
Incorporation for purposes of the determination of the Class D Per Share  Price.
Further,  as noted above, the right of a holder of Class D Stock to convert such
stock to Class C  Stock in connection  with an offering of  Class C Stock  would
terminate if the Class D Stock became Publicly Traded. Even if the Class D Stock
did  become Publicly  Traded, there  is no  assurance that  an efficient trading
market for the Class  D Stock would  develop. Further, the  market price of  the
Class  D Stock is expected to be more  volatile than the Class D Per Share Price
has historically been.

    The PKS  Board of  Directors has  considered and  will in  the future  again
consider  the feasibility  and desirability  of listing the  Class D  Stock on a
national  securities  exchange,  on  the  Nasdaq  National  Market  or  in   the
over-the-counter  market or taking other action to facilitate the Public Trading
of the Class D Stock. If the Class  D Stock were to become Publicly Traded,  the
current  aggregation  of businesses  that constitute  the Diversified  Group and
certain characteristics of the capital structure of the Company might result  in
a public market valuation of the Class D Stock that was lower than the intrinsic
value  of  the  underlying Diversified  Group  businesses, even  if  such market
valuation were higher  than the Class  D Formula Value.  Specifically, the  fact
that  the capital structure  of the Company  uses different classes  of stock to
reflect the performance of the two Groups of the Company, and the fact that  the
voting  characteristics of the  Class C Stock,  which will continue  to be owned
only by employees of the Company, give  the Class C Stock a significant  measure
of voting control over the Company, could cause an undervaluation of the Class D
Stock  by the  investing public.  The PKS  Board would  take these  factors into
account in making  a decision regarding  facilitation of Public  Trading of  the
Class  D  Stock.  In  addition,  the  PKS  Board  would  take  into  account the
desirability of reducing  the Company's repurchase  obligations with respect  to
its  capital stock, the feasibility of raising  capital by issuing Class D Stock
in public offerings or private placements, and any improvements of the  earnings
of  and  the  general  level  of  maturation  of  the  newer  Diversified  Group
businesses. Moreover, the  ability to  provide for the  listing of  the Class  D
Stock   on  a  securities  exchange,  the  Nasdaq  National  Market  or  in  the
over-the-counter market will  be subject  to the laws,  regulations and  listing
eligibility criteria in effect from time to time.

                                       22
<PAGE>
                          RISK FACTORS RELATING TO MFS

OPERATING LOSSES

    The  development of MFS's  businesses and the  installation and expansion of
its networks require significant expenditures, a substantial portion of which is
incurred before the realization of  revenues. These expenditures, together  with
the  associated early operating expenses, result  in negative cash flow until an
adequate customer  base is  established. MFS  reported loss  from operations  of
approximately  $11.8 million,  $31.5 million  and $136.1  million for  the three
years ended December 31, 1992, 1993  and 1994, respectively, and $115.1  million
for  the six months  ended June 30,  1995. Although its  revenues have increased
substantially in each  of the  last three  years, MFS  has incurred  significant
increases in expenses associated with the development and expansion of its fiber
optic  networks, services and customer base. There  can be no assurance that MFS
will achieve or sustain profitability in the future.

SIGNIFICANT CAPITAL REQUIREMENTS

    Expansion of MFS's existing networks and services and the development of new
networks and services require significant  capital expenditures. MFS expects  to
fund  additional  capital  requirements through  existing  resources, internally
generated funds and additional  debt or equity  financing as appropriate.  There
can  be  no  assurance,  however,  that  MFS  will  be  successful  in producing
sufficient cash flow or raising sufficient debt or equity capital on terms  that
it  will  consider acceptable.  Sales of  substantial numbers  of shares  of MFS
Common Stock in the public  market in the future  could impair MFS's ability  to
raise  additional capital through the sale  of its equity securities. Failure to
generate sufficient funds may require MFS to delay or abandon some of its future
expansion or expenditures,  which could have  a material adverse  effect on  its
growth.

COMPETITION

    DOMESTIC  TELECOMMUNICATIONS SERVICES.   In each  of its  markets, MFS faces
significant competition from  the local  exchange carriers  (the "LECs"),  which
currently  dominate  their local  telecommunications  markets. In  addition, MFS
faces competition  in  the provision  of  certain  of its  services  from  other
competitive  access  providers  ("CAPs"),  long  distance  companies,  cable  TV
companies, equipment  vendors and  others. A  continuing trend  toward  business
combinations  and  alliances  in  the  telecommunications  industry  may  create
significant new competitors to MFS.

    INTERNATIONAL TELECOMMUNICATIONS  SERVICES.   MFS faces  competition in  the
provision  of its international services  from many service providers including,
among  others,  AT&T   Corporation,  MCI   Communications  Corporation,   Sprint
Corporation,  British  Telecommunications  PLC  and  government-owned  telephone
companies that retain monopoly status  for certain services in certain  European
countries.

    NETWORK  SYSTEMS  INTEGRATION.   MFS  Network Technologies'  primary network
systems integration competitors are the  Bell Operating Companies (the  "BOCs"),
long  distance carriers, equipment manufacturers and major independent telephone
companies. In certain circumstances, MFS  Network Technologies may also  compete
with   regional  and  local  systems  integration  and  construction  firms  for
integration and installation projects.  In the automatic vehicle  identification
market,  MFS  Network  Technologies  competes  with  specific  manufacturers and
several of the aerospace defense contractors that have indicated an intention to
shift to commercial markets.

    UNPREDICTABLE COMPETITIVE ENVIRONMENT.   Given the  increasing incidence  of
legal  and regulatory initiatives,  which affect future  competition both in the
United States and internationally, MFS is  unable to predict the nature of  such
future  competition with any precision. Changes  to existing laws and regulation
could enhance the ability of certain service providers to compete with MFS,  and
could  create  new  competitors to  MFS  services.  In addition,  many  of MFS's
existing and potential competitors have financial, personnel and other resources
significantly greater than those of MFS.

                                       23
<PAGE>
REGULATION

    MFS is subject to varying degrees of federal, state, local and international
regulation. MFS  is  not  currently subject  to  price  cap or  rate  of  return
regulation,  nor is it currently required  to obtain U.S. Federal Communications
Commission (the  "FCC")  authorization  for installation  or  operation  of  its
network facilities used for domestic services. FCC approval is required, however
for the installation and operation of its international facilities and services.
The  FCC has determined that nondominant carriers,  such as MFS, are required to
file interstate tariffs  on an  ongoing basis.  Challenges to  these tariffs  by
third  parties  may  cause MFS  to  incur substantial  legal  and administrative
expenses. MFS's  subsidiaries  that  provide intrastate  service  are  generally
subject  to certification and tariff filing requirements by state regulators. In
addition, MFS  is  subject to  varying  degrees  of regulation  in  the  foreign
jurisdictions  in which it  conducts operations. Although  the trend in federal,
state and international  regulation appears to  favor increased competition,  no
assurance  can be given that changes in current or future regulations adopted by
the FCC, state or  foreign regulators or legislative  initiatives in the  United
States and abroad would not have a material adverse effect on MFS.

RISKS OF EXPANSION AND IMPLEMENTATION

    MFS  is  engaged  in  the  expansion and  development  of  its  networks and
services. MFS expects such expansion and  development to accelerate in the  near
future.  The expansion  and development  of its  networks will  depend on, among
other things, its ability to assess markets, design fiber optic network backbone
routes, install facilities  and obtain  rights-of-way, building  access and  any
required  government authorizations  and/or permits  and the  outcome of certain
state and federal  regulatory actions and  legislative initiatives which  affect
MFS's  ability to offer economically viable services, all in a timely manner, at
reasonable costs and on  satisfactory terms and conditions.  As a result,  there
can  be no assurance  that MFS will be  able to expand  its existing networks or
install or acquire new networks.  If MFS is not able  to expand its networks  or
install new networks, there will be a material adverse effect on its growth.

    Foreign  operations  or  investment  may  be  adversely  affected  by  local
political and economic developments,  exchange controls, currency  fluctuations,
royalty  and tax  increases, retroactive  tax claims,  expropriation, import and
export regulations and other  foreign laws or  policies as well  as by laws  and
policies  of the United States affecting foreign trade, taxation and investment.
In addition, in the event of a dispute arising from foreign operations, MFS  may
be  subject  to the  exclusive  jurisdiction of  foreign  courts or  may  not be
successful in subjecting foreign  persons to the jurisdiction  of courts in  the
United  States. MFS may also be hindered  or prevented from enforcing its rights
with respect  to  a governmental  instrumentality  because of  the  doctrine  of
sovereign immunity.

RAPID TECHNOLOGICAL CHANGES

    The  telecommunications industry is subject to rapid and significant changes
in technology.  While  MFS believes  that,  for the  foreseeable  future,  these
changes  will neither materially  affect the continued use  of fiber optic cable
nor materially hinder its ability to acquire necessary technologies, the  effect
of  technological changes, including  changes relating to  emerging wireline and
wireless  transmission  technologies,  on  the  businesses  of  MFS  cannot   be
predicted.

DEPENDENCE ON KEY PERSONNEL

    MFS's  businesses are managed  by a small number  of key executive officers,
particularly Mr. James Q.  Crowe, Chairman of the  Board of Directors and  Chief
Executive  Officer of MFS, and Mr.  Royce J. Holland, President, Chief Operating
Officer and a Director of MFS, the loss of certain of whom could have a material
adverse effect on MFS. MFS believes that its future success will depend in large
part on its continued ability to attract and retain highly skilled and qualified
personnel. MFS does not have  any employment or non-competition agreements  with
any of its key executive officers.

POTENTIAL EFFECT OF SPIN-OFF ON MARKET FOR MFS COMMON STOCK

    In  the event the  Spin-off is consummated,  PKS will distribute  all of the
shares of MFS  Common Stock  and MFS  Preferred Stock then  owned by  it to  the
holders of Class D Stock. Such shares of MFS

                                       24
<PAGE>
Common  Stock are  expected to constitute  approximately 65%  of the outstanding
shares of MFS Common Stock, after giving effect to the MFS Recapitalization. The
persons who are members of  the boards of directors of  PKS and MFS (other  than
one  director of PKS who became a director in June 1995), and who are holders of
Class D Stock, have entered into agreements with MFS restricting their right  to
resell  any shares  of MFS  Common Stock  received by  them as  a result  of the
Spin-off (including MFS Common Stock  received upon conversion of MFS  Preferred
Stock  received by  them) until May  24, 1997, with  certain limited exceptions;
provided, however, that each such person may sell up to 50,000 of such shares on
or after May 24, 1996. Based upon the number of shares of PKS stock held by such
persons, an aggregate of approximately 9,200,000 shares of MFS Common Stock  or,
approximately  15% of the total number of shares of MFS Common Stock expected to
be outstanding at the time of the Spin-off, will be subject to such  agreements.
See  "Certain Transactions --  Agreements Regarding Restrictions  on Transfer of
Spin-off Stock." Nonetheless, after the Spin-off a substantial number of  shares
of MFS Common Stock will become available for future sale in the public markets.
In  addition, since  MFS has issued,  and may  continue to issue,  shares of MFS
Common Stock in connection with financing, employee benefit plans,  acquisitions
or otherwise, it is possible that the number of outstanding shares of MFS Common
Stock  available for sale  in the future could  increase significantly. Sales of
substantial numbers of  such shares  in the public  market in  the future  could
adversely affect the market price of the MFS Common Stock and could impair MFS's
ability to raise additional capital through the sale of its equity securities.

VARIABILITY OF QUARTERLY OPERATING RESULTS; VOLATILITY

    As  a result of  the significant expenses associated  with the expansion and
development of its  networks and  services, MFS anticipates  that its  operating
results  could vary  significantly from  period to  period and  such variability
could adversely affect MFS's results  of operations. In addition, MFS's  network
systems  integration revenues  are and generally  will continue  to be dependent
upon a small number of large projects. Accordingly, these revenues are likely to
vary significantly from period to  period, and such variability could  adversely
affect MFS's results of operations. In addition, the market prices of securities
of  growth  companies similar  to MFS  have  historically been  highly volatile.
Future announcements  concerning MFS  or  its competitors,  including  quarterly
results,  technological  innovations,  services  or  government  legislation  or
regulation, may have a significant effect on the market price of the MFS  Common
Stock.

DIVIDEND PAYMENTS; LIQUIDATION

    MFS  has never  paid a cash  dividend on the  MFS Common Stock  and does not
presently intend to do so for the forseeable future. In January 1994, MFS issued
approximately $788 million aggregate principal  amount of Senior Discount  Notes
(the  "Senior  Discount Notes")  pursuant to  an Indenture  between MFS  and IBJ
Schroder Bank & Trust Company, as Trustee  (the "Indenture"). In the event of  a
liquidation  of MFS, the holders of the Senior Discount Notes, together with all
other creditors of MFS, will be entitled to be paid in full before any  payments
are  made in respect of  the MFS Preferred Stock. In  addition, on May 23, 1995,
MFS issued, in  an underwritten  public offering,  9,500,000 Depositary  Shares,
each  representing  a one  one-hundredth  interest in  a  share of  Series  A 8%
Cumulative Convertible Preferred Stock, par  value $.01 per share (the  "DECS").
The  DECS rank PARI PASSU with the MFS  Preferred Stock as to any payment in the
event of the liquidation  of MFS, and  the holders of the  DECS are entitled  to
receive  an  aggregate of  at  least $318,250,000  plus  all accrued  and unpaid
dividends on the DECS in the event of the liquidation of MFS. The Indenture  and
other debt agreements to which MFS is a party restrict MFS's ability to pay cash
dividends.  There is no assurance that other agreements similar to the Indenture
and these other debt agreements which MFS may enter into in the future will  not
contain similar restrictions on payment of cash dividends. As a result, MFS does
not  anticipate that  it will  be permitted  to pay  cash dividends  in the near
future.

LIMITED TRANSFERABILITY OF MFS PREFERRED STOCK; IRREVOCABLE PROXY

    The shares of MFS Preferred Stock to  be received by the holders of Class  D
Stock  in the Spin-off cannot be sold  or transferred without the consent of MFS
for  six  years  from  the  date  of  issuance,  except  under  certain  limited
circumstances.   See  "Description  of  Securities   --  MFS  Preferred  Stock."

                                       25
<PAGE>
MFS does not intend to  consent to any transfers that  might have the effect  of
transferring  a significant  percentage of  voting power  to a  third party. The
holders of the MFS Preferred Stock and the holders of MFS Common Stock will vote
together as a single class  except as otherwise required  by law. Each share  of
MFS  Preferred  Stock  has  five  (5) votes  on  all  matters  presented  to the
stockholders of  MFS.  KDG, however,  has  agreed  to grant  the  Secretary  and
Assistant Secretary of MFS an irrevocable proxy to vote all of the shares of MFS
Preferred  Stock in proportion to the vote of the holders of MFS Common Stock on
all matters (including, but  not limited to,  business combinations) other  than
the  election  of MFS  directors  and matters  as to  which  the holders  of MFS
Preferred Stock vote  as a separate  class under Delaware  corporation law.  The
irrevocable  proxy will be binding  on all recipients of  MFS Preferred Stock in
the Spin-off and, as a result, will  limit the ability of the holders of  shares
of  MFS Preferred Stock to  influence MFS actions on  all matters other than the
election of directors. See "Description of Securities -- MFS Preferred Stock."

POTENTIAL ANTITAKEOVER EFFECT OF CERTAIN CHARTER AND BY-LAW PROVISIONS

    MFS has 905,000  shares of authorized  and unissued preferred  stock and  in
excess  of 100,000,000 shares  of authorized and unissued  MFS Common Stock that
could be issued to a third party  selected by current management or used as  the
basis  for a shareholders' rights plan, which could have the effect of deterring
a potential acquirer. At a  meeting on April 26, 1995  (the "April 26 MFS  Board
Meeting"),  the MFS Board of  Directors approved, and resolved  to submit to the
stockholders of MFS for approval at the MFS 1995 annual meeting of stockholders,
an amendment to the MFS certificate of incorporation to increase the  authorized
number  of shares of  preferred stock of  MFS from 1,000,000  to 25,000,000. The
approval by  the stockholders  of MFS  at the  MFS 1995  annual meeting  of  the
increase  in the number of authorized shares  of preferred stock was required in
connection with the Spin-off. PKS voted all shares of MFS Common Stock owned  or
controlled  by  it  for  this  proposal  at  the  MFS  1995  annual  meeting  of
stockholders.  Accordingly,   by  virtue   of   PKS's  indirect   ownership   of
approximately  67% of the outstanding shares of  MFS Common Stock at the time of
the MFS 1995 annual meeting of  stockholders, this proposal was adopted  without
the vote of any other stockholders of MFS.

    In  addition, at the April 26 MFS  Board Meeting, the MFS Board of Directors
approved, and resolved to submit to the stockholders of MFS for approval at  the
MFS  1995 annual  meeting of stockholders,  certain other amendments  to the MFS
certificate  of  incorporation,  which  include  proposals  to:  amend  the  MFS
certificate  of incorporation  to divide the  MFS Board of  Directors into three
classes, prohibit stockholders  of MFS  from taking action  by written  consent,
require  that special meetings  of stockholders be  called only by  the board of
directors or the chairman of the board  of MFS and require the affirmative  vote
of  at least 66 2/3% of the votes  entitled to be cast thereon to adopt, repeal,
alter, amend  or  rescind the  by-laws  of MFS.  PKS  agreed that,  if  the  MFS
Recapitalization  was approved  by the  non-PKS holders  of MFS  Common Stock as
described herein, PKS would vote all of the shares of MFS Common Stock owned  or
controlled  by  it in  favor  of the  proposed  amendments, thus  assuring their
adoption. The MFS Recapitalization was approved, PKS voted all of the shares  of
MFS  Common Stock owned or controlled by  it in favor of the proposed amendments
and such proposed  amendments were  adopted at the  MFS 1995  annual meeting  of
stockholders held on August 24, 1995.

    In  addition, at the April 26 MFS  Board Meeting, the MFS Board of Directors
approved certain  amendments  to the  by-laws  of MFS  that  prescribe  specific
procedural  requirements for the nomination of directors and the introduction of
business by a stockholder of record  at an annual meeting of stockholders  where
such  business is not specified in the notice of meeting or brought by or at the
discretion of the MFS Board of Directors. The MFS Board of Directors also  plans
to  consider, in  the near  future, the adoption  of a  shareholder rights plan.
Notwithstanding the receipt  of the  requisite stockholder  approval or  further
approval  of the MFS Board of Directors, each of the foregoing amendments to the
MFS certificate  of  incorporation  and the  by-laws  of  MFS, as  well  as  any
shareholder  rights plan adopted by the MFS Board, will be implemented only upon
consummation of the Spin-off.

    The ability  of  the MFS  Board  of Directors  to  establish the  terms  and
provisions  of  different series  of preferred  stock,  together with  the other
features of  the  MFS  certificate  of incorporation  and  the  by-laws  of  MFS
described  above, could make  more difficult or discourage  the removal of MFS's

                                       26
<PAGE>
management, which some or a majority of  the MFS stockholders may believe to  be
beneficial,  and could  discourage or  make more  difficult or  expensive, among
other transactions,  a merger  involving MFS,  or a  tender offer,  open  market
purchase program or other purchases of the capital stock of MFS in circumstances
that  would give MFS  stockholders the opportunity  to realize a  premium on the
sale of their MFS  capital stock over the  then-prevailing market prices,  which
some or a majority of such holders may deem to be in their best interests.

                                    OVERVIEW

THE EXCHANGE OFFER

    In the Exchange Offer, PKS is offering to exchange:

    (i) .416598  of a share of Class D Stock for each share of Class B Stock and
        each share of Class C Stock outstanding (including all shares of Class C
        Stock issued in  exchange for  Exchangeable Debentures  pursuant to  the
        Exchange Offer, as described herein);

    (ii) 24.75  shares of Class  C Stock and  24.75 shares of  Class D Stock for
         each $1,000 principal amount of  the Company's outstanding 1990  Series
         Convertible Debentures due October 31, 2000 (each such share of Class C
         Stock  will then  be exchangeable for  .416598 shares of  Class D Stock
         pursuant to the Exchange Offer as described in clause (i) above);

    (iii) 22.98 shares of Class C  Stock and 22.98 shares  of Class D Stock  for
          each  $1,000 principal amount of the Company's outstanding 1991 Series
          Convertible Debentures due October 31, 2001 (each such share of  Class
          C  Stock will then be exchangeable for .416598 shares of Class D Stock
          pursuant to the Exchange Offer as described in clause (i) above); and

    (iv) 19.97 shares of Class D Stock  for each $1,000 principal amount of  the
         Company's  1993 Series Class  D Convertible Debentures  due October 31,
         2003

(subject, in each case, to rounding conventions designed to eliminate fractional
shares, as described herein).

    The Exchange Offer is being made on the terms and subject to the  conditions
described herein under "The Exchange Offer" and in the Letter of Transmittal. If
the  Exchange Offer  is consummated, the  Spin-off will  be consummated promptly
thereafter.

THE SPIN-OFF

    The Exchange Offer is  being made in  connection with a  proposal by PKS  to
effect  the Spin-off by making a dividend distribution to the holders of Class D
Stock, including Class D Stock issuable  in the Exchange Offer, of the  Spin-off
Stock, consisting of all of the 40,091,644 shares of MFS Common Stock and all of
the  15,000,000 shares of MFS Preferred  Stock to be held by  PKS at the time of
the Spin-off. MFS Common Stock distributed  in the Spin-off will constitute  the
major  portion of the Spin-off Stock in  terms of value, while the MFS Preferred
Stock will constitute a minor portion of  the Spin-off Stock in terms of  value.
The MFS Common Stock is currently traded on the Nasdaq National Market under the
symbol "MFST." On August 24, 1995 the last reported sale price of the MFS Common
Stock  as reported by the Nasdaq National Market was $45.50 per share. No holder
of Class D Stock  will be required  to pay any cash  or other consideration,  to
surrender  or exchange shares of Class D Stock  or any other security or to take
any other  action  in  order to  receive  the  Spin-off Stock  pursuant  to  the
Spin-off.

    The  Spin-off Stock will  include the 40,062,658 shares  of MFS Common Stock
and the 15,000,000 shares of MFS Preferred Stock held by KDG after giving effect
to the MFS Recapitalization,  which stock will be  distributed as a dividend  by
KDG to PKS immediately before the Spin-off. The Spin-off Stock will also include
28,986  shares  of  MFS  Common  Stock that  PKS  will  purchase  for $1,000,000
immediately after the dividend by KDG to PKS but prior to the Spin-off. The  per
share  purchase price of approximately $34.50  for such transaction was based on
the average  trading  price  of the  MFS  Common  Stock for  the  30-day  period
preceding   the   date   such   price   was   agreed   upon   by   the  parties.

                                       27
<PAGE>
Such purchase will  provide MFS  additional cash for  payment of  the legal  and
other  costs MFS has incurred or will  incur in connection with the transactions
described herein. In addition, the purchase by PKS of such stock will cause  the
Spin-off  to constitute a "reorganization" for  federal income tax purposes (and
not only a  tax-free spin-off). Treatment  of the Spin-off  as a  reorganization
will also qualify the receipt of, and transactions involving, the Spin-off Stock
for  tax-free treatment in certain non-federal jurisdictions in which holders of
PKS stock reside.

    The Company currently expects that the Spin-off dividend will be declared as
of, and paid to  holders of Class  D Stock of  record as of,  the day after  the
Expiration Date. See "The Spin-off -- Manner of Effecting the Distribution."

    The  Company  has  received the  Ruling  from  the IRS  confirming  that the
Spin-off will be  tax-free to the  holders of  Class D Stock  for United  States
federal  income tax purposes. See "The Spin-off -- Certain United States Federal
Income Tax Considerations Relating  to the Spin-off". The  Spin-off will not  be
consummated unless the Ruling remains substantially in effect as of the Spin-off
Date.  See "The  Spin-off --  Conditions to Spin-off;  Right of  PKS to Abandon,
Defer or Modify the Spin-off."

    After the Spin-off, holders  of Class D  Stock will hold  the Class D  Stock
held  by them prior  to the Spin-off,  as well as  the MFS Common  Stock and MFS
Preferred Stock received  in the Spin-off.  The actual number  of shares of  MFS
Common Stock and MFS Preferred Stock distributed per share of Class D Stock will
depend  on the number of shares of Class D Stock issued pursuant to the Exchange
Offer. Accordingly, PKS will  not be able to  determine precisely the number  of
shares  of MFS Common Stock or the number  of shares of MFS Preferred Stock that
will be distributed per share of Class  D Stock in connection with the  Spin-off
until the Expiration Date. The following table sets forth PKS's estimates of the
number  of shares of MFS Common Stock  and MFS Preferred Stock to be distributed
per share of Class D Stock, assuming that (i) all of the Exchangeable Debentures
are exchanged for Offered Stock in the Exchange Offer and (ii) the stated number
of shares of Exchangeable Stock are exchanged for Class D Stock in the  Exchange
Offer:

<TABLE>
<CAPTION>
  ASSUMED NUMBER       ESTIMATED NUMBER OF        ESTIMATED NUMBER OF
   OF SHARES OF       SHARES OF MFS COMMON      SHARES OF MFS PREFERRED
   EXCHANGEABLE       STOCK DISTRIBUTED PER      STOCK DISTRIBUTED PER
STOCK EXCHANGED(1)  SHARE OF CLASS D STOCK(2)  SHARE OF CLASS D STOCK(2)
- ------------------  -------------------------  -------------------------
<S>                 <C>                        <C>
    3,000,000                    1.77                       0.66
    5,000,000                    1.71                       0.64
<FN>
- ------------------------
(1)  The  3,000,000 share  assumption reflects PKS's  estimate of  the number of
     shares of Exchangeable Stock likely to  be tendered in the Exchange  Offer,
     based upon the tender indications that PKS has received from members of the
     PKS Board of Directors and members of the KCG Board of Directors, and PKS's
     estimates  of the likely number of  additional tenders. The 5,000,000 share
     assumption is set forth  solely to illustrate the  impact of the tender  of
     substantially  more shares  than anticipated by  PKS. PKS  does not believe
     that  a  tender  of  5,000,000  shares  is  likely.  The  3,000,000  figure
     represents  20.2%, and the 5,000,000 figure  represents 33.7%, of the total
     number of shares of Class B Stock and Class C Stock outstanding at June 23,
     1995.

(2)  The estimate of the number of shares of MFS Common Stock and MFS  Preferred
     Stock distributed per share of Class D Stock was determined by dividing the
     total  number of each class  of shares to be distributed  by the sum of (i)
     the number of shares of Class  D Stock currently outstanding, (ii) in  each
     case,  the number  of shares  of Class  D Stock  that would  be issued upon
     tender of the assumed number of shares of Exchangeable Stock, and (iii) the
     number of shares of Class D Stock that would be issued upon exchange of all
     Exchangeable Debentures.
</TABLE>

    The current Class D Per Share Price is $60.25. Because a significant portion
of the current Class D Per Share Price  is attributable to MFS, the Class D  Per
Share  Price  will  be  significantly  reduced  when  and  if  the  Spin-off  is
consummated. The actual Class D Per  Share Price after the Spin-off will  depend
upon a number of factors, including the number of shares of Class D Stock issued

                                       28
<PAGE>
in  the Exchange  Offer and  the Company's determination  of the  portion of the
Class D Per  Share Price  attributable to MFS.  The following  table sets  forth
PKS's estimates of (i) the pro forma Class D Per Share Price after giving effect
to the Exchange Offer and the Spin-off, (ii) the current market value of the MFS
Common  Stock to be distributed in the Spin-off  per share of Class D Stock, and
(iii) the redemption value of the MFS  Preferred Stock to be distributed in  the
Spin-off  per share of Class D Stock, assuming  in each case that (x) all of the
Exchangeable Debentures are exchanged  for Offered Stock  in the Exchange  Offer
and  (y) the  stated number  of shares of  Exchangeable Stock  are exchanged for
Class D Stock in the Exchange Offer.

<TABLE>
<CAPTION>
 ASSUMED NUMBER      ESTIMATED        ESTIMATED VALUE      ESTIMATED VALUE
  OF SHARES OF       PRO FORMA         OF MFS COMMON      OF MFS PREFERRED
  EXCHANGEABLE      CLASS D PER      STOCK DISTRIBUTED    STOCK DISTRIBUTED
     STOCK             SHARE           PER SHARE OF         PER SHARE OF
  EXCHANGED(1)      PRICE(2)(4)     CLASS D STOCK(3)(4)  CLASS D STOCK(3)(4)
- ----------------  ----------------  -------------------  -------------------
<S>               <C>               <C>                  <C>
   3,000,000         $    41.00          $   80.54            $    0.66
   5,000,000         $    41.75          $   77.81            $    0.64
<FN>
- ------------------------
(1)  The 3,000,000 share  assumption reflects  PKS's estimate of  the number  of
     shares  of Exchangeable Stock likely to  be tendered in the Exchange Offer,
     based upon the tender indications that PKS has received from members of the
     PKS Board of Directors and members of the KCG Board of Directors, and PKS's
     estimates of the likely number  of additional tenders. The 5,000,000  share
     assumption  is set forth solely  to illustrate the impact  of the tender of
     substantially more shares  than anticipated  by PKS. PKS  does not  believe
     that  a  tender  of  5,000,000  shares  is  likely.  The  3,000,000  figure
     represents 20.2%, and the 5,000,000  figure represents 33.7%, of the  total
     number of shares of Class B Stock and Class C Stock outstanding at June 23,
     1995.

(2)  Earnings of the Diversified Group for 1995, including earnings attributable
     to  the settlement of certain  litigation described at "Recent Developments
     -- Whitney Litigation,"  would not be  reflected in the  Class D Per  Share
     Price until 1996.

(3)  For  purposes of this  table, each share  of MFS Common  Stock is valued at
     $45.50, its last reported  sale price on the  Nasdaq National Market as  of
     August  24, 1995, and  each share of  MFS Preferred Stock  is valued at its
     redemption value of $1.00 per share. There is no assurance as to the market
     price of the MFS Common Stock at the Spin-off Date.

(4)  As shown in  the table, the  greater the number  of shares of  Exchangeable
     Stock  exchanged in the Exchange Offer, the less the reduction in the Class
     D Per Share Price resulting from the Spin-off. This is attributable to  the
     fact  that  the  amount of  the  reduction  in the  Class  D  Formula Value
     resulting from the  Spin-off will  be a fixed  amount equal  to PKS's  book
     investment  in the Spin-off Stock to  be distributed, whereas the amount of
     such reduction on a per share basis  (I.E., the amount of the reduction  in
     the  Class D Per Share Price) will decrease as more shares of Class D Stock
     are issued in the Exchange Offer. Also,  as shown in the table on page  28,
     the  greater the  number of shares  of Exchangeable Stock  exchanged in the
     Exchange Offer, the fewer the number of shares of Spin-off Stock (and hence
     the less the value of the Spin-off Stock) distributed per share of Class  D
     Stock in the Spin-off.
</TABLE>

THE MFS RECAPITALIZATION

    One  of the requirements of applicable tax law relating to the Spin-off that
are addressed by the Ruling is that, at  the time of the Spin-off, PKS must  own
stock  possessing at least 80% of the voting  power of the MFS capital stock. In
order to satisfy this requirement,  PKS and KDG have  agreed with MFS to  effect
the  MFS Recapitalization pursuant  to which KDG will  exchange 2,900,000 of the
42,962,658 shares  of MFS  Common Stock  currently held  by KDG  for  15,000,000
shares  of the  MFS Preferred  Stock, which  is a  new class  of MFS convertible
preferred stock, $.01 par  value. The MFS  Recapitalization will be  consummated
immediately  prior to the Spin-off. As a result of the MFS Recapitalization, the
percentage interest of the common equity of MFS owned by KDG (calculated  taking
into  account outstanding options and warrants  to acquire MFS Common Stock, and
securities

                                       29
<PAGE>
convertible into MFS Common Stock) will be reduced, and the percentage  interest
of  such common equity of MFS owned by  non-PKS holders of MFS Common Stock will
be correspondingly increased. This  percentage interest shift  will result in  a
reduction  of  approximately $60  million in  the value  of the  outstanding MFS
Common Stock held by KDG  (based on the last reported  sale price of MFS  Common
Stock  on August 24, 1995). In exchange  for this reduction, KDG will receive 15
million shares of high-vote MFS Preferred Stock in a face amount of $15 million.
The terms  of the  MFS  Recapitalization were  determined through  arm's  length
negotiations  between the management of PKS and  the management of MFS, and were
approved by the MFS Board, the  PKS Board and independent special committees  of
the MFS Board and the PKS Board. See "-- Background and Purpose of the Spin-off;
Purpose  of the Exchange Offer; Board  Proceedings." Each share of MFS Preferred
Stock will have five  votes in the  election of MFS directors  and in all  other
matters  presented to stockholders, although KDG will grant to the Secretary and
the Assistant Secretary of MFS an irrevocable proxy to vote all of the shares of
MFS Preferred Stock in proportion to the vote of the holders of MFS Common Stock
on all matters other than the election of MFS directors and matters as to  which
holders  of the  MFS Preferred  Stock vote  as a  separate class  under Delaware
corporation law. PKS  will distribute,  and the holders  of Class  D Stock  will
receive,  the MFS Preferred  Stock in the  Spin-off subject to  the terms of the
irrevocable proxy.  The MFS  Preferred Stock  will vote  together with  the  MFS
Common  Stock and the  DECS as a single  class, except on  certain matters as to
which holders of  the MFS Preferred  Stock are  entitled to a  class vote  under
Delaware  corporation  law.  See  "Certain  Transactions  --  Certain Agreements
Between PKS and MFS  -- The Securities Purchase  Agreement" and "Description  of
Securities -- MFS Preferred Stock."

    The  MFS Recapitalization was approved by the holders of MFS Common Stock at
the MFS 1995 annual stockholders meeting held on August 24, 1995. In  connection
with  such approval, PKS  voted all of the  shares of MFS  Common Stock owned or
controlled by it in the  same manner as the majority  of the non-PKS holders  of
MFS  Common Stock (and not  the holders of any preferred  stock of MFS which was
outstanding) present in person or by proxy  at the meeting voted. Thus, the  MFS
Recapitalization was supported by a majority of such non-PKS stockholders.

    Under  the agreement between PKS and MFS governing the MFS Recapitalization,
the MFS Recapitalization would not be consummated if PKS abandoned the Spin-off.
If PKS were  to propose a  material modification  to the terms  of the  Spin-off
(which  PKS considers to be highly unlikely),  both PKS and MFS would review the
terms of the  MFS Recapitalization in  the context of  the modified Spin-off  to
determine  whether to consummate the MFS  Recapitalization on its existing terms
or to consider alternative terms.

BACKGROUND AND PURPOSE OF THE SPIN-OFF; PURPOSE OF THE EXCHANGE OFFER; BOARD
PROCEEDINGS

    THE 1992  AMENDMENT.   In  January 1992,  the  PKS stockholders  adopted  an
amendment  (the "Amendment") to the PKS Certificate of Incorporation pursuant to
which each share of the Company's then-existing Class C stock was  automatically
exchanged  for one share of "new" Class C  Stock and one share of Class D Stock,
and each share of  the Company's then-existing Class  B stock was  automatically
exchanged  for one share of  the Company's "new" Class B  Stock and one share of
Class D Stock. The Amendment also provided holders of Class B Stock and Class  C
Stock with the right to convert such stock into Class D Stock exercisable during
the  period from and including  October 15 through and  including December 15 of
each year. Such conversions become effective upon, and are made on the basis  of
the  ratio of the Class  B&C Per Share Price  to the Class D  Per Share Price in
effect on, January 1  of the following year.  See "Description of Securities  --
PKS  Stock --  Conversion of Class  B&C Stock  into Class D  Stock." Among other
things, the  conversion provision  provided holders  of Class  C Stock  who  are
leaving  the  employment of  the Company,  such as  retirees, an  opportunity to
convert Class B Stock and Class C Stock into Class D Stock as an alternative  to
selling their Class B Stock or Class C Stock back to the Company.

                                       30
<PAGE>
    RULING  REQUEST;  PRELIMINARY  NEGOTIATIONS.    Before  the  initial  public
offering of MFS Common  Stock in May 1993,  PKS provided MFS with  substantially
all  of the capital necessary  for the development of  MFS's business. Since the
initial public offering,  MFS has  obtained over $1  billion of  capital in  the
public  capital markets, and  has become increasingly  dependent upon the public
capital markets for the funding necessary  for its growth. In addition, MFS  has
made  increasing  use  of sophisticated  acquisition  techniques to  grow.  As a
result, PKS's and MFS's managements  have considered changes in MFS's  ownership
and  capital  structure  that would  provide  MFS with  the  maximum flexibility
possible to raise  capital in  the public capital  markets and  to grow  through
acquisitions.  In addition, as  MFS's businesses have grown,  its growth and the
growth and development of the  other Diversified Group businesses have  resulted
in  a substantial  disparity between  the fair  market value  of the Diversified
Group businesses, on the one hand, and,  on the other hand, the Class D  Formula
Value  and the Class  D Per Share Price  (the price at which  holders of Class D
Stock can sell their stock back to  the Company pursuant to the PKS  Certificate
of  Incorporation), each  of which  is based  upon the  Diversified Group's book
investment in the Diversified Group  businesses. This disparity is  particularly
acute  with respect to the  difference between the fair  market value of MFS, as
reflected in the price of the MFS Common Stock, and the Diversified Group's book
investment in MFS. Furthermore, that difference has been exacerbated during 1993
and 1994 as the portions of the Class D Formula Value and the Class D Per  Share
Price  attributable to MFS have  been reduced by PKS's  share of the substantial
book losses generated  by the development-stage  activities of MFS,  and as  the
fair  market value  of MFS  has increased. Given  the absence  of an established
trading market for the Class D Stock, there is no assurance for the  foreseeable
future  that a holder  of Class D  Stock would be  able to sell  such stock at a
price that reflects  the market value  of the Diversified  Group businesses,  as
opposed  to selling  such stock  back to the  Company at  the Class  D Per Share
Price.

    During 1994, PKS management  examined a number  of possible transactions  to
determine  whether a  transaction could  be structured  that would  address both
MFS's need for maximum flexibility in raising capital and the disparity  between
market  and book values in the Diversified  Group without giving rise to adverse
tax consequences for PKS. During meetings  held during the second half of  1994,
the  PKS  Board  of  Directors  considered  and  discussed  a  number  of  those
transactions, principally  including  the  possible spin-off  of  the  Company's
equity in MFS to the holders of Class D Stock, the possible spin-off of KDG, the
primary  Diversified Group holding company, to the holders of Class D Stock, and
the possible listing of the Class D  Stock on a national securities exchange  or
Nasdaq. Each of these transactions offered the prospect of being tax-free to PKS
and  its  stockholders  for United  States  federal income  tax  purposes. After
reviewing these alternatives, the PKS Board concluded that neither the  spin-off
of KDG nor the listing of the Class D Stock would efficiently address MFS's need
for  maximum flexibility in raising capital. The PKS Board also concluded that a
spin-off of  PKS's entire  equity interest  in MFS  would reduce  the  disparity
between  the Class D Formula Value and the market value of the Diversified Group
businesses as effectively as would  either a spin-off of  KDG or the listing  of
the  Class D Stock, while  providing MFS with the  greatest flexibility to raise
capital and to engage in a  number of development transactions, as discussed  at
"--  MFS Deliberations," below.  During the second  half of 1994,  the PKS Board
also considered  the  possibility  of  an exchange  offer  for  the  purpose  of
permitting  the holders of  Exchangeable Securities to  exchange such securities
for Class D Stock prior to such a spin-off of PKS's equity interest in MFS.

    In November 1994,  the PKS  Board authorized  management of  the Company  to
prepare and file with the Internal Revenue Service a request for a ruling that a
spin-off  of the Company's entire equity interest  in MFS, in conjunction with a
transaction having substantially the same  effects as the MFS  Recapitalization,
would  be tax-free  to the holders  of Class  D Stock for  United States federal
income tax purposes. The Company filed the ruling request in December 1994.

    As noted above,  the purpose of  the MFS Recapitalization  is to enable  the
Spin-off  to qualify for tax-free treatment. During  the second half of 1994 and
the first half of 1995, management of  MFS and management of PKS negotiated  and
agreed  in principle  on the terms  and conditions of  the MFS Recapitalization,
including the condition that the MFS Recapitalization be subject to the approval
of a

                                       31
<PAGE>
majority of the non-PKS holders of MFS Common Stock. Such agreement in principle
contemplated that the MFS Recapitalization would entail the surrender by KDG  of
approximately   3.0  million  shares  of  MFS   Common  Stock  in  exchange  for
approximately 15.0 million to 25.0 million shares of MFS Preferred Stock.

    MFS DELIBERATIONS.  A special committee  of the MFS Board of Directors  (the
"MFS  Special Committee"), comprised of Ronald W. Roskens and Michael B. Yanney,
each of whom is an independent director of MFS who does not have an interest  in
either  the MFS Recapitalization, the Exchange  Offer or the Spin-off other than
as a stockholder of MFS, was formed to consider the agreement in principle as to
the terms of the proposed MFS Recapitalization, including the proposed terms  of
the  MFS Preferred  Stock. The MFS  Special Committee  met on March  22, 1995 to
review and consider  the terms  of the  proposed MFS  Recapitalization. The  MFS
Special  Committee, with the assistance of Gleacher & Co., Inc., MFS's financial
advisor, and MFS's  legal advisors, reviewed  documentary and other  information
provided by management of MFS and considered oral presentations made by Gleacher
&  Co.,  Inc.  Additional telephonic  conversations  were held  between  the MFS
Special Committee members and  members of MFS management,  Gleacher & Co.,  Inc.
and  MFS's  legal  advisors.  Subsequent  to  the  meeting  and  the  telephonic
conversations, the MFS Special Committee approved in principle the terms of  the
MFS  Recapitalization  and recommended  the approval  of such  terms of  the MFS
Recapitalization to the MFS Board of Directors.

    On March 29, 1995, the MFS Board  of Directors met to consider the  proposed
MFS  Recapitalization and the proposed terms of the MFS Preferred Stock. At this
meeting, after consideration of  the oral presentation by  Gleacher & Co.,  Inc.
and  the oral presentation by the  MFS Special Committee on their recommendation
with respect to the MFS Recapitalization  and the issuance of the MFS  Preferred
Stock,  the MFS  Board of  Directors unanimously  (i) approved  the proposed MFS
Recapitalization and  the  proposed  terms  of the  MFS  Preferred  Stock,  (ii)
authorized  the submission of  the MFS Recapitalization  to the MFS stockholders
for approval and (iii) authorized management of MFS to negotiate the final terms
of the MFS Recapitalization  and the MFS Preferred  Stock. In addition, the  MFS
Board  of  Directors  appointed the  Executive  Committee  of the  MFS  Board of
Directors to approve the  specific terms of the  MFS Preferred Stock,  including
without  limitation, dividend rate, conversion rate and certain other terms, and
to authorize the issuance of such stock to PKS to facilitate the Spin-off.

    The  MFS  Board  of  Directors's  deliberations  with  respect  to  the  MFS
Recapitalization and the terms of the MFS Preferred Stock focused primarily upon
the  benefits to be received  by MFS and its  stockholders from the Spin-off. In
this regard,  the MFS  Board  of Directors  concluded  that the  Spin-off  would
benefit  both MFS and its stockholders by  transferring the shares of MFS Common
Stock currently concentrated in KDG's  ownership to approximately 1,400  holders
of  Class D Stock, thereby  increasing the number of  shares of MFS Common Stock
available for  public trading  and enhancing  the liquidity  of the  MFS  Common
Stock.  In  addition,  the  MFS Board  of  Directors  considered  that increased
liquidity of the  MFS Common Stock  could be  expected over time  to reduce  the
volatility  of  the market  price  of the  MFS Common  Stock.  The MFS  Board of
Directors also concluded that the private placement of equity securities with an
acceptable strategic investor would be  an attractive external financing  option
for  MFS, and  that MFS's  ability to take  advantage of  a strategic investment
would be enhanced by the distribution of KDG's concentrated ownership in MFS.

    MFS's management has indicated to the MFS Board of Directors that it is  not
desirable  to use  cash for  all potential  acquisitions, because  many of MFS's
expansion opportunities will require significant amounts of cash. Instead, MFS's
management desires to be able to effect the acquisition of companies (as well as
assets and facilities) through  the use of shares  of MFS Common Stock  whenever
that  approach  is more  attractive.  As long  as MFS  is  a subsidiary  of KDG,
however, management  of  MFS  believes  that  the  use  of  MFS's  stock  as  an
acquisition  "currency"  is  hindered  due  to  target  stockholders  finding it
unattractive  to  hold  shares  in  an  entity  that  has  a  large  controlling
stockholder  and a relatively small public float.  As a result, the MFS Board of
Directors determined that the Spin-off would make MFS's stock more desirable for
any potential target's stockholders.

                                       32
<PAGE>
    The  MFS Board of Directors also  considered that, following consummation of
the Spin-off, MFS and  its stockholders would be  better positioned to pursue  a
potential  combination or acquisition (if one were  to be proposed in the future
on otherwise  acceptable  terms) which  would  allow  for the  issuance  of  the
acquiror's  or  resultant  company's shares  to  the  stockholders of  MFS  on a
tax-free basis  to all  parties.  If the  Spin-off  were not  consummated,  many
acquisition  or combination  proposals would  prove to  be untenable  because of
unacceptable tax consequences to PKS, whose consent would be needed for any such
transaction, or  because  of strategic  difficulties  associated with  a  single
stockholder  owning a concentrated block of  shares of the acquiror or resultant
company. A  potential  purchaser  of  MFS  may  conclude  that  these  strategic
difficulties   make  MFS  less  attractive   (or  unattractive)  as  a  possible
acquisition candidate,  resulting in  either the  loss of  an opportunity  or  a
reduced  acquisition price. While in the view  of the MFS Board of Directors the
primary purpose of the Spin-off is not to  facilitate a sale of MFS (and MFS  is
not  presently  pursuing  any  such transaction),  the  MFS  Board  of Directors
believed that the interests  of the MFS's stockholders  would be best served  by
providing  MFS  and its  stockholders  with maximum  flexibility  concerning any
possible acquisition of MFS.

    Finally, the MFS Board of Directors considered that the Spin-off will  allow
MFS,  beginning  two  years  following  consummation  of  the  Spin-off,  to  be
classified  as  an  "independent  entity"  for  generally  accepted   accounting
principles,   thus   providing   (i)   MFS   with   the   opportunity   to   use
pooling-of-interests accounting when undertaking business combinations and  (ii)
any  potential  acquiror  of  MFS the  opportunity  to  use pooling-of-interests
accounting in an acquisition of MFS. MFS  currently does not qualify for use  of
pooling-of-interests  accounting because of the majority ownership by KDG. Thus,
either the combination of MFS with a company having a market value that  exceeds
the  value of its tangible assets or the  acquisition of MFS (which has a market
value that  exceeds  the value  of  its tangible  assets)  would result  in  the
creation  of significant intangible assets, including goodwill, which would have
to be amortized over time, reducing MFS's or the acquiror's, as the case may be,
future reported net earnings. MFS believes  that its ability to effect  business
combinations  efficiently would be  significantly aided if MFS  were able to use
pooling accounting.

    The MFS  Board  of  Directors  considered that  after  consummation  of  the
Spin-off,  the holders of Class D Stock might immediately sell the shares of MFS
Common Stock received in  the Spin-off, which could  affect the market price  of
the MFS Common Stock. In that regard, the MFS Board of Directors determined that
this  risk could be lessened somewhat by  the execution of agreements by certain
members of the PKS Board of Directors and MFS Board of Directors limiting  their
ability  to sell shares  of MFS Common  Stock received in  the Spin-off. The MFS
Board of Directors also considered the possible effect of the Spin-off on  MFS's
debt  rating. Based upon conversations between  management of MFS and the rating
agencies, the management  of MFS  advised the MFS  Board of  Directors that  the
rating  agencies would not have a negative view of the Spin-off transaction. The
MFS Board of  Directors was also  aware that as  a result of  the Spin-off,  the
Noncompetition  Agreement between MFS and PKS  would terminate but believed that
this termination would be of no consequence  to MFS. The MFS Board of  Directors
determined that the advantages of the Spin-off to MFS discussed above outweighed
such potential negative effects.

    In  June 1995, the management  of PKS and the  management of MFS agreed upon
the final  terms  and  provisions  of  the  MFS  Preferred  Stock  and  the  MFS
Recapitalization  in which  KDG will exchange  2.9 million shares  of MFS Common
Stock held  by  KDG  for 15,000,000  shares  of  MFS Preferred  Stock.  The  MFS
Recapitalization was approved by the holders of MFS Common Stock at the MFS 1995
annual  meeting of  stockholders held  on August  24, 1995.  See "Description of
Securities -- MFS Preferred Stock."

    SPECIAL COMMITTEE  OF THE  PKS BOARD.   By  resolutions adopted  by  written
consent  as of April 1, 1995, the PKS Board asked a special committee of the PKS
Board (the "Special Committee"),  comprised of Robert  B. Daugherty, Charles  M.
Harper  and Peter  Kiewit, Jr., the  only members of  the PKS Board  who are not
employees of PKS or one  of its subsidiaries, to  review certain aspects of  the
MFS Recapitalization and the Exchange Offer. The PKS Board appointed the Special
Committee to

                                       33
<PAGE>
review the transactions because both the purchase of MFS Preferred Stock and the
Exchange Offer are transactions in which one or more members of the PKS Board of
Directors  have an interest, either as a member of the MFS Board of Directors or
as a potential participant in the  Exchange Offer. In the resolution  appointing
the  Special Committee, the PKS Board asked  the Special Committee (i) to review
the proposed terms and conditions of  the MFS Recapitalization and the  Exchange
Offer  for the  Exchangeable Stock, and  (ii) to report  to the PKS  Board as to
whether the terms  and conditions of  the MFS Recapitalization  are fair to  the
holders  of  the  Class  D  Stock,  and  whether  the  Exchange  Offer  for  the
Exchangeable Stock is in the best interest  of the stockholders of PKS, in  each
case  exercising its business judgment and taking into account in each case such
facts and circumstances as it deemed appropriate.

    The Special Committee met on April 7, April 17, April 28, May 19 and June 9,
1995. In connection with its review, the Special Committee, with the  assistance
of  its independent financial and legal advisors, reviewed documentary and other
information provided by management of the Company and met independently and with
members of management of the Company. At  its May 19, 1995 meeting, the  Special
Committee  was given  a presentation by  its financial advisor,  CS First Boston
Corporation ("CS First Boston"), with  respect to the MFS Recapitalization,  the
Exchange  Offer  and the  Spin-off (the  "Transactions") and  the matters  to be
addressed in CS First Boston's opinion to the PKS Board of Directors.

    The  PKS  Board  of  Directors  considered  the  Exchange  Offer,  the   MFS
Recapitalization  and the  Spin-off at  a special meeting  on June  9, 1995 (the
"Special Meeting"). At the  Special Meeting, the  Special Committee reported  to
the  PKS Board that, based upon the documents and other information presented to
the PKS Board and the Special  Committee, including (i) information relating  to
the  respective businesses and prospects of  the Construction & Mining Group and
the Diversified Group, including historical financial information regarding  the
Construction  &  Mining Group  and the  Diversified  Group, pro  forma financial
information reflecting the impact of the Exchange Offer and the Spin-off on  the
Construction  & Mining Group and the Diversified Group, 1995 financial forecasts
for the Construction & Mining Group  and the Diversified Group, and  information
with  respect to the liabilities of and contingent exposures of the Construction
& Mining Group  and the Diversified  Group, (ii)  the transfer of  funds to  the
Diversified  Group with respect to  the conversions of shares  of Class C Stock,
(iii) the effect of conversions on the holders of Class C Stock and the  holders
of  Class D Stock, including  the stated policy of  PKS not to replace converted
shares with new grants, (iv) the opinion  dated June 9, 1995 of CS First  Boston
that,  on  the  basis of  and  subject to  the  matters set  forth  therein, the
Transactions were fair, from a financial  point of view, to the stockholders  of
PKS, (v) the reasons for prompt action with respect to the proposed Spin-off (as
described  at "PKS Board  Approval," below), and (vi)  the presentations made by
the management of the  Company, the Special Committee  concluded that as of  the
date  of its report it believed that in its business judgment: (a) the terms and
conditions of the MFS Recapitalization  are fair to the  holders of the Class  D
Stock,  and (b) the extension by PKS to  holders of Class B Stock and holders of
Class C Stock of  the Exchange Offer  for the Exchangeable  Stock, when made  in
conjunction  with the Spin-off, is  in the best interest  of the stockholders of
the Company. (Mr.  Daugherty, the owner  of 86,000 shares  of MFS Common  Stock,
abstained  from  voting on  the MFS  Recapitalization  in the  Special Committee
deliberations.)

    In its review of the Transactions, the Special Committee considered each  of
the  factors  considered  by  the  PKS  Board  relative  to  the  effect  of the
Transactions on  the  holders  of PKS  stock  and  described at  "--  PKS  Board
Approval," below.

    PKS  BOARD APPROVAL.   The  PKS Board approved  the Exchange  Offer, the MFS
Recapitalization and certain  related transactions,  and preliminarily  approved
the Spin-off at the Special Meeting.

    In  approving  the  amount of  MFS  Common  Stock to  be  exchanged  for MFS
Preferred Stock in the MFS Recapitalization,  the PKS Board considered (i)  that
the  exchange was negotiated on an arm's  length basis between the management of
PKS and the  management of  MFS, each  of which  had the  assistance of  outside
financial  advisors, (ii) the  value of the percentage  interest decrease in the

                                       34
<PAGE>
outstanding MFS Common Stock owned by KDG following the exchange, (iii) the face
value of the MFS Preferred Stock received in the exchange, (iv) the value of the
additional voting  rights  associated with  the  MFS Preferred  Stock,  (v)  the
benefits  to  PKS  stockholders (through  MFS  and otherwise)  arising  from the
Spin-off, which could not be accomplished on a tax-free basis as desired by  the
PKS  Board absent the exchange, and (vi) the perceived need to encourage non-PKS
holders of MFS Common Stock to vote to approve the MFS Recapitalization.

    In connection with its  approval of the Spin-off,  the PKS Board  considered
that  the  Spin-off would  be advantageous  to  MFS, and  indirectly to  the PKS
stockholders who would become stockholders of  MFS as a result of the  Spin-off,
by  enhancing  MFS's  ability to  meet  its  capital funding  requirements  in a
cost-effective manner and to implement its business strategy. The PKS Board also
recognized  that  (as  discussed   above  under  "Ruling  Request;   Preliminary
Negotiations")  the market value of the MFS Common Stock after the Spin-off was,
at the time of the meeting, and is  expected to be at the time of the  Spin-off,
significantly  greater than the value attributed  to MFS in the determination of
the Class  D  Per  Share  Price  in  accordance  with  the  PKS  Certificate  of
Incorporation  prior to the Spin-off. The  PKS Board concluded, subject to final
PKS Board  action shortly  prior to  the  date the  proposed Spin-off  would  be
effected,  that the Spin-off was in the best interest of the stockholders of PKS
and should be authorized.

    The PKS  Board further  determined that  it was  appropriate to  provide  an
opportunity  to the holders of  Class B Stock and Class  C Stock to convert such
stock into, or exchange such stock for, Class D Stock prior to the Spin-off. The
PKS  Board  also  concluded  that  consummation  of  the  Spin-off  as  soon  as
practicable following approval of the MFS Recapitalization by the holders of MFS
Common  Stock would be in the best interest of the stockholders of PKS. Although
holders of  Class B  Stock and  Class C  Stock can  next tender  such stock  for
conversion  into  Class  D  Stock under  the  PKS  Certificate  of Incorporation
beginning on October  15, 1995, actual  conversions of such  stock into Class  D
Stock  would not  occur until  January 1996, and  the final  calculations of the
amount of Class  D Stock  issuable in such  conversions would  not be  completed
until  March or April of 1996. As noted above, a primary purpose of the Spin-off
is to provide MFS  with flexibility to raise  substantial amounts of capital  as
quickly  and as efficiently as  possible so that MFS  can compete in its growing
and changing  areas of  business. The  PKS  Board concluded  that delay  of  the
Spin-off  until March or April of 1996 would unnecessarily restrict and encumber
MFS's capital-raising  activities and  would  hamper MFS's  ability to  use  MFS
Common  Stock to  make acquisitions during  the next year.  Furthermore, the PKS
Board concluded that a substantial delay of the Spin-off would present both  PKS
and  MFS with  uncertainty of  operation, administrative  confusion and employee
distraction. Accordingly,  the PKS  Board authorized  the Exchange  Offer as  an
appropriate  means of providing holders of Class  B Stock and Class C Stock with
the desired  opportunity  to exchange  such  stock  for Class  D  Stock  without
deferring the Spin-off until March or April of 1996.

    Given  that the PKS Board viewed the Exchange Offer as providing the holders
of Class B Stock and Class C Stock with a similar opportunity as is provided  by
the  annual period for conversions of Class B Stock and Class C Stock into Class
D Stock  pursuant  to  the  PKS Certificate  of  Incorporation,  the  PKS  Board
concluded that the conversion ratio applicable to such annual conversions should
be  applied in determining  the exchange ratio  for the Exchange  Offer. The PKS
Board therefore determined that the conversion ratio applicable to January  1995
conversions  of Class B Stock and Class C Stock into Class D Stock (I.E., $60.25
to $26.00 or 1:.431535) as adjusted for the dividends paid on the Class B  Stock
and  the Class C Stock in January 1995 of $.45 per share and in May 1995 of $.45
per share (yielding a  ratio of $60.25 to  $25.10 or 1:.416598) represented  the
appropriate  exchange ratio for  the Exchange Offer.  Accordingly, the PKS Board
authorized an exchange ratio  of .416598 of  a share of Class  D Stock for  each
share of Class B Stock or Class C Stock tendered pursuant to the Exchange Offer.

    The  Spin-off will result in the distribution to holders of Class D Stock of
a unique asset which represents a substantial portion of the value of the assets
comprising the Class D Formula Value. The

                                       35
<PAGE>
PKS Board accordingly concluded that  holders of Exchangeable Debentures  (which
are  convertible in whole or  in part into Class D  Stock) should be afforded an
opportunity to participate  in the  Spin-off, and determined  that the  Exchange
Offer  for the  Exchangeable Debentures was  the most appropriate  way to permit
holders of Exchangeable Debentures to so participate.

    In connection with its approvals  of the MFS Recapitalization, the  Spin-off
and  the Exchange Offer, the PKS Board considered the collective impact of those
Transactions on the holders of Class B Stock and Class C Stock, as a class,  the
holders  of Class  D Stock,  as a class,  and on  the holders  of the respective
classes of PKS convertible debentures. In approving those Transactions, the  PKS
Board  concluded  that  the Transactions,  taken  as  a whole,  would  result in
significant benefits to holders of Class  D Stock. The PKS Board also  concluded
that  holders of Class B Stock and Class C Stock and the holders of Exchangeable
Debentures would have an  adequate opportunity, through  the Exchange Offer,  to
participate  in the benefits  resulting from those  Transactions, and that those
Transactions would not adversely affect the holders of Class C Stock who  choose
not  to participate in the Exchange Offer  or the holders of PKS debentures that
are convertible solely into Class C Stock.

    In reaching those conclusions, the PKS Board considered that the holders  of
Class  D Stock will receive, as a  result of the Transactions, securities with a
slightly lower  value  than  they  would have  received  if  the  Spin-off  were
consummated  in  1995  without  conducting the  Exchange  Offer.  The  PKS Board
concluded, however, that such  reduction in value would  be consistent with  the
conversion  rights provided  in the PKS  Certificate of  Incorporation, would be
minimal in comparison to the substantial  benefits to be received by holders  of
Class  D  Stock from  the Transactions,  and would  be minimized  by use  of the
exchange ratio applicable to January 1995 conversions, as adjusted for dividends
to date. The PKS Board also noted that holders of Class C Stock who elect not to
participate in  the Exchange  Offer will  not receive  any direct  benefit as  a
result of those Transactions, but determined that those holders of Class C Stock
could  reasonably conclude that  the potential long-term  financial benefits and
risks of owning Class  C Stock make  such stock a  more suitable investment  for
such holders when weighed against the potential long-term financial benefits and
risks  of converting Class C  Stock into Class D  Stock and participating in the
Spin-off.

    OPINIONS  OF   FINANCIAL   ADVISORS.      In   connection   with   the   MFS
Recapitalization,  the  Exchange  Offer  and the  Spin-off,  the  PKS  Board has
received fairness  opinions  from  CS  First Boston  and  Lehman  Brothers  Inc.
("Lehman  Brothers"), both of which are attached to this Prospectus as Annexes I
and II,  respectively,  and  described below.  PKS  management  retained  Lehman
Brothers  in February of 1995 to  provide PKS management with advice, assistance
and analysis concerning  the MFS  Recapitalization, the Exchange  Offer and  the
Spin-off. Following the formation of the Special Committee in April of 1995, the
Special Committee retained CS First Boston to provide the Special Committee with
independent  financial advice and analysis regarding  the matters which were the
subject of the Special Committee's review. Prior to its consideration of the MFS
Recapitalization, the Exchange Offer  and the Spin-off  at the Special  Meeting,
the  PKS Board asked both  firms to provide it  with fairness opinions regarding
the transactions.

    The PKS Board has  received an opinion  from CS First  Boston dated June  9,
1995  that, as of that date  and on the basis of  and subject to the matters set
forth therein, the Transactions were fair from a financial point of view to  the
stockholders of PKS. CS First Boston subsequently rendered an opinion dated July
21,  1995 to the PKS Board that, as of that date and on the basis of and subject
to the matters set  forth therein, the Transactions  were fair from a  financial
point of view to the stockholders of PKS.

    THE  FULL TEXT OF THE OPINION OF CS  FIRST BOSTON DATED JULY 21, 1995, WHICH
SETS FORTH THE  ASSUMPTIONS MADE, MATTERS  CONSIDERED AND LIMITS  ON THE  REVIEW
UNDERTAKEN  BY CS FIRST BOSTON,  IS ATTACHED AS ANNEX  I TO THIS PROSPECTUS. THE
JUNE 9, 1995 OPINION IS SUBSTANTIALLY IDENTICAL TO THE OPINION ATTACHED  HERETO.
THE  SUMMARY OF THE CS FIRST BOSTON OPINION SET FORTH HEREIN IS QUALIFIED IN ITS
ENTIRETY BY  REFERENCE  TO  THE  FULL  TEXT OF  SUCH  OPINION,  AND  HOLDERS  OF
EXCHANGEABLE  SECURITIES AND  HOLDERS OF  CLASS D STOCK  ARE URGED  TO READ SUCH
OPINION IN ITS ENTIRETY.

                                       36
<PAGE>
    In arriving  at  its opinion,  CS  First Boston  reviewed  certain  publicly
available  business and financial information relating to PKS, KCG, KDG and MFS,
a draft dated July 11,  1995 of this Prospectus, a  draft dated June 2, 1995  of
the  Certificate of  Designation for the  MFS Preferred Stock  and certain other
information, including financial forecasts  and pro forma financial  statements,
provided  to it by PKS, KCG,  KDG and MFS, and met  with the managements of PKS,
KCG, KDG and MFS to  discuss the businesses and prospects  of PKS, KCG, KDG  and
MFS,  as well as the terms of  the Transactions. CS First Boston also considered
certain financial  and stock  market data  of MFS  and compared  that data  with
similar data for other publicly held companies in businesses similar to those of
MFS.  In  addition, CS  First Boston  compared  the financial  terms of  the MFS
Preferred Stock with the financial terms of other securities and considered such
other information, financial studies, analyses and investigations and financial,
economic and  market criteria  that it  deemed relevant.  CS First  Boston  also
analyzed  the financial benefits  that will be  afforded the holders  of Class D
Stock as a result of  the Spin-off and considered the  fact that the holders  of
Class  B Stock and Class C  Stock will be given the  opportunity, as a result of
the Exchange Offer, to exchange their shares of Class B Stock and Class C  Stock
for shares of Class D Stock prior to consummation of the Spin-off and thereby to
participate  in  the financial  benefits of  the  Spin-off. No  limitations were
imposed by the  Special Committee or  the PKS  Board upon CS  First Boston  with
respect to the investigations made or procedures followed by it in rendering its
opinion.

    In  connection  with  its  review,  CS  First  Boston  did  not  assume  any
responsibility for independent verification of any of the foregoing  information
(including the information contained in the draft Prospectus) and relied on such
information  being complete and accurate in  all material respects. With respect
to the financial forecasts,  CS First Boston assumed  that they were  reasonably
prepared  on  bases  reflecting  the  best  currently  available  estimates  and
judgments of the managements of each of PKS,  KCG, KDG and MFS as to the  future
financial  performance  of  each of  PKS,  KCG,  KDG and  MFS,  respectively. In
addition, CS First Boston did not make an independent evaluation or appraisal of
the assets or liabilities (contingent or otherwise)  of any of PKS, KCG, KDG  or
MFS, nor was it furnished with any such evaluations or appraisals.

    In  arriving at its opinion,  CS First Boston relied  upon the advice of PKS
that the Spin-off will be consummated only  if it can be effected on a  tax-free
basis,  that the Spin-off will qualify as  a tax-free spin-off under Section 355
of the Internal Revenue Code  of 1986, as amended,  and that PKS has  determined
that  the MFS Recapitalization  is the most feasible  method of facilitating the
Spin-off on  a tax-free  basis. In  addition, CS  First Boston  relied upon  the
advice of PKS that PKS and MFS will take all action necessary to ensure that the
MFS  Common Stock and the  MFS Preferred Stock to be  received by the holders of
Class D Stock  in the Spin-off  will not be  "restricted securities" within  the
meaning  of Rule 144(a)(3) promulgated under the  Securities Act and will not be
subject to  restrictions  on  transfer  under the  Securities  Act  (other  than
restrictions  imposed as a result of the holder being an "affiliate" (within the
meaning of rule 144(a)(1) under the Securities Act) of MFS.

    For purposes  of its  opinion, CS  First Boston  assumed that  less than  an
aggregate  of  6,000,000 shares  of  Class B  Stock and  Class  C Stock  will be
exchanged for Class D Stock in the Exchange Offer. CS First Boston also  assumed
that  PKS will complete  the Spin-off as  described in the  draft dated July 11,
1995 of this Prospectus and that  the consummation of the Transactions will  not
result  in any default or similar event  under any loan agreement, instrument of
indebtedness or other contract of PKS, KCG, KDG or MFS which will not be waived.
CS First Boston's opinion was necessarily based upon financial, economic, market
and other conditions as they existed and could be evaluated on the date of  such
opinion.

    The   opinion  of  CS  First  Boston   does  not  address  or  constitute  a
recommendation regarding (i) the business decisions of PKS or MFS to effect  the
MFS  Recapitalization or the  Spin-off or to  make the Exchange  Offer, (ii) the
determination by PKS  of the  exchange ratio  of Exchangeable  Stock to  Offered
Stock  or the  other terms and  conditions of  the Exchange Offer,  or (iii) the
business decisions of PKS to  effect, or the financial impact  on PKS or any  of
its  stockholders  of, certain  other transactions  in  connection with  the MFS
Recapitalization, the  Exchange  Offer  and  the  Spin-off.  CS  FIRST  BOSTON'S

                                       37
<PAGE>
OPINION  IS DIRECTED  ONLY TO  THE FAIRNESS  TO THE  STOCKHOLDERS OF  PKS OF THE
FINANCIAL TERMS OF THE TRANSACTIONS, AND DOES NOT CONSTITUTE A RECOMMENDATION TO
ANY  HOLDER  OF  EXCHANGEABLE  SECURITIES  AS  TO  WHETHER  SUCH  HOLDER  SHOULD
PARTICIPATE IN THE EXCHANGE OFFER.

    The CS First Boston opinion also expresses no opinion as to the market value
of  the MFS Preferred Stock upon issuance or  the prices at which the MFS Common
Stock or the MFS  Preferred Stock will trade  subsequent to the consummation  of
the  MFS Recapitalization or  the Spin-off. The  actual market value  of the MFS
Common Stock and  the MFS  Preferred Stock may  vary depending  upon changes  in
interest  rates, dividend rates, market  conditions, general economic conditions
and other factors which generally influence the price of securities.

    CS First Boston did not participate in  the determination by PKS and MFS  of
the terms of the MFS Recapitalization, the Exchange Offer or the Spin-off or the
terms  of the MFS Preferred Stock and has not been asked to consider alternative
means of effecting a distribution of the  MFS Common Stock or the MFS  Preferred
Stock to the holders of Class D Stock.

    The  following is  a summary of  certain financial analyses  performed by CS
First Boston  in  connection with  its  opinion dated  June  9, 1995,  which  it
discussed  with the Special Committee and the  PKS Board. In connection with its
opinion dated  July 21,  1995,  CS First  Boston performed  certain  procedures,
including each of the financial analyses described below, to update its analyses
made  in connection with its  opinion dated June 9,  1995, and reviewed with the
managements of PKS, KCG, KDG and MFS the assumptions on which such analyses were
based and other factors,  including current financial results  of PKS, KCG,  KDG
and  MFS and their respective future  prospects, and PKS's current assessment of
the likely timing of the consummation  of the Transactions. The results of  such
analyses  were substantially the same as those arrived at in connection with the
CS First Boston opinion dated  June 9, 1995. CS  First Boston believes that  its
analyses  must be  considered as  a whole  and that  selecting portions  of such
analyses or any of the factors considered, without considering all such analyses
and factors,  could create  an incomplete  view of  the process  underlying  its
analyses and opinion. The preparation of a fairness opinion is a complex process
and is not susceptible to partial analysis or summary description.

    In connection with the delivery of its opinion, CS First Boston presented to
the  Special Committee  and the PKS  Board (a) a  comparison of the  Class D Per
Share Price with the sum  of (i) the estimated  post-Spin-off Class D Per  Share
Price  and (ii)  the implied market  value of the  MFS Common Stock  and the MFS
Preferred Stock estimated to be received in the Spin-off for each share of Class
D Stock (based on  the May 15, 1995  closing price of MFS  Common Stock); (b)  a
comparison  of the Class B&C  Per Share Price with the  sum of (i) the estimated
post-Spin-off Class D  Per Share  Price multiplied by  the number  of shares  of
Class  D Stock to be received  for each share of Class  B Stock or Class C Stock
exchanged in the Exchange  Offer and (ii)  the implied market  value of the  MFS
Common  Stock  and the  MFS  Preferred Stock  estimated  to be  received  in the
Spin-off for each share of Class B Stock or Class C Stock exchanged for Class  D
Stock  in the  Exchange Offer (based  on the May  15, 1995 closing  price of MFS
Common Stock); and  (c) an analysis  of the  projected dilution of  the Class  D
Stock as a result of exchanges of Exchangeable Securities in the Exchange Offer.
CS  First  Boston  performed  such analyses  (x)  assuming  exchange  ratios for
exchanges of Class B Stock and Class C  Stock for Class D Stock in the  Exchange
Offer  (I) equal to the exchange ratio used in the Exchange Offer and (II) based
on the ratio projected by  PKS to be applicable  to January 1996 conversions  of
Class B Stock and Class C Stock into Class D Stock pursuant to PKS's Certificate
of  Incorporation and (y) assuming scenarios in which no shares of Class B Stock
and Class C Stock are exchanged in the Exchange Offer, in which an aggregate  of
3,000,000 such shares are exchanged, and in which an aggregate of 6,000,000 such
shares are exchanged.

    CS  First Boston  performed the  above analyses  to determine  the financial
effects, under the various  sets of assumed facts  described above and based  on
the  information available to CS First Boston on the date of its opinion, of the
Transactions on the holders of Class D Stock and on the holders of Class B Stock
and Class C  Stock who elect  to exchange such  stock for Class  D Stock in  the

                                       38
<PAGE>
Exchange  Offer. CS First Boston also advised  the Special Committee and the PKS
Board of its views regarding the potential for increases in the trading value of
MFS Common Stock after consummation of the Spin-off as a result of the increased
public float and greater liquidity of MFS Common Stock and increased access  for
MFS to the public and private capital markets.

    In  addition, CS First Boston presented to the Special Committee and the PKS
Board (a)  an analysis  of the  pro forma  effects of  the Transactions  on  the
balance  sheets of KCG and KDG, based upon information provided by management of
PKS; (b) a calculation of certain  financial benefits to the non-PKS holders  of
MFS  Common Stock in the MFS Recapitalization (based on the May 15, 1995 closing
price of MFS Common Stock  and the face value of  the MFS Preferred Stock);  and
(c)  a calculation of  potential federal income  tax consequences to  PKS if the
Spin-off were  structured as  a transaction  taxable to  PKS for  United  States
federal  income tax purposes (based on the estimated amount of the capital gains
tax that could potentially be  payable by PKS if  its holdings of securities  of
MFS  were distributed in a taxable  transaction). CS First Boston performed such
analyses  to  determine  the  financial  effects  of  various  aspects  of   the
Transactions on KCG, KDG and PKS.

    Based  on the analyses described in the preceding three paragraphs, CS First
Boston concluded  that  the  Transactions  are  expected  to  provide  financial
benefits to the holders of Class D Stock and to the holders of Class B Stock and
Class C Stock who elect to exchange such stock for Class D Stock in the Exchange
Offer  and that, as  of the date of  its opinion and subject  to the matters set
forth therein, the Transactions  were fair, from a  financial point of view,  to
such holders.

    CS First Boston also presented to the Special Committee and the PKS Board an
analysis  of the holding  period required before  the Class B&C  Per Share Price
would equal the sum of (a) the  estimated post-Spin-off Class D Per Share  Price
multiplied  by the number of shares of the Class D Stock to be received for each
share of Class B Stock or Class C Stock exchanged in the Exchange Offer and  (b)
the  implied market value  of the MFS  Common Stock and  the MFS Preferred Stock
estimated to be  received in the  Spin-off for each  share of Class  B Stock  or
Class  C Stock  exchanged for Class  D Stock  in the Exchange  Offer (based upon
various assumed annual growth rates  for the Class B&C  Per Share Price and  the
Class  D Per Share  Price and MFS  Common Stock). CS  First Boston performed the
above analyses to determine, under the  assumed facts described above and  based
on  the information available to CS First Boston on the date of its opinion, the
financial effects of the Transactions on the holders of Class B Stock and  Class
C  Stock who do not exchange such stock for Class D Stock in the Exchange Offer.
Based on such analyses  and the other analyses  described above and  considering
that  the holders  of Class B  Stock and Class  C Stock have  the opportunity to
exchange such stock for  Class D Stock  in the Exchange  Offer, CS First  Boston
concluded  that, as of  the date of its  opinion and subject  to the matters set
forth therein, the Transactions  were fair, from a  financial point of view,  to
the  holders of Class B Stock  and Class C Stock who  elect not to exchange such
stock for Class D Stock in the Exchange Offer.

    CS First Boston is  a nationally recognized investment  banking firm and  is
actively  engaged  in  the  valuation  of  businesses  and  their  securities in
connection  with  mergers  and   acquisitions,  leveraged  buyouts,   negotiated
underwritings,  secondary  distributions  of  listed  and  unlisted  securities,
private placements and valuations for estate, corporate and other purposes.  The
Special  Committee selected CS First Boston  as its financial advisor because it
is a  nationally recognized  investment banking  firm and  because of  CS  First
Boston's  expertise and independence. CS First  Boston has rendered from time to
time various investment banking services to PKS and received customary fees  for
such services.

    Pursuant  to the terms of an engagement  letter dated April 7, 1995, PKS has
paid CS First Boston a fee of $400,000 for providing an opinion to the PKS Board
of Directors, $100,000 of which became payable upon execution of the  engagement
letter  and the remainder of which became payable upon delivery of such opinion.
PKS has also  agreed to  reimburse CS First  Boston for  its reasonable  out-of-
pocket expenses, including all reasonable fees and disbursements of counsel, and
to  indemnify  CS  First  Boston and  certain  related  persons  against certain
liabilities relating to or arising out of its

                                       39
<PAGE>
engagement. In the  ordinary course  of its business,  CS First  Boston and  its
affiliates  may actively trade the debt and equity securities of MFS for its own
account and for the accounts of customers and, accordingly, may at any time hold
a long or short position in such securities.

    In addition, the  PKS Board has  received an opinion  from Lehman  Brothers,
financial advisor to PKS, dated June 9, 1995 that, based upon and subject to the
assumptions   and   qualifications  set   forth   in  such   opinion,   the  MFS
Recapitalization, the Exchange  Offer for Exchangeable  Stock and the  Spin-off,
taken as a whole, are fair from a financial point of view to the stockholders of
PKS. Lehman Brothers subsequently rendered an opinion dated July 17, 1995 to the
PKS Board that, based upon and subject to the assumptions and qualifications set
forth  in  such  opinion,  the  MFS  Recapitalization,  the  Exchange  Offer for
Exchangeable Stock and the Spin-off, taken as a whole, are fair from a financial
point of view to  the stockholders of  PKS. In arriving  at its opinion,  Lehman
Brothers  concluded that  the Transactions were  fair from a  financial point of
view to the holders of Class D Stock,  as a class, and holders of Class B  Stock
and  Class C Stock who elect to  participate in the Exchange Offer. In addition,
Lehman Brothers  concluded that  the Transactions  were not  likely to  in  fact
adversely  affect holders of Class  C Stock who elect  not to participate in the
Exchange Offer.

    THE FULL TEXT OF THE OPINION OF  LEHMAN BROTHERS DATED JULY 17, 1995,  WHICH
SETS  FORTH  ASSUMPTIONS  MADE,  MATTERS CONSIDERED  AND  LIMITS  ON  THE REVIEW
UNDERTAKEN BY LEHMAN BROTHERS, IS ATTACHED  AS ANNEX II TO THIS PROSPECTUS.  THE
JUNE 9, 1995 OPINION IS SUBSTANTIALLY IDENTICAL TO THE OPINION ATTACHED HERETO.

    The  summary of the Lehman Brothers opinion set forth herein is qualified in
its entirety by  reference to  the full  text of  such opinion,  and holders  of
Exchangeable  Securities and  holders of  Class D Stock  are urged  to read such
opinion in  its  entirety.  Lehman  Brothers has  not  been  asked  to  consider
alternative means of effecting a distribution of the MFS Common Stock or the MFS
Preferred  Stock to the  holders of Class  D Stock. The  Lehman Brothers opinion
does not address the fairness, from a  financial point of view, of the  exchange
ratio  of Exchangeable Stock to Offered Stock  in the Exchange Offer. The Lehman
Brothers opinion is directed only to the fairness to the stockholders of PKS  of
the  financial terms of  the transactions covered  by the opinion,  and does not
constitute a  recommendation to  any  holder of  Exchangeable Securities  as  to
whether such holder should participate in the Exchange Offer.

    In  arriving at  its opinion,  Lehman Brothers  reviewed and  analyzed (i) a
draft of this  Prospectus, (ii) such  publicly available information  concerning
MFS  which it believed to be relevant  to its inquiry, including MFS's Form 10-K
for the fiscal year  ended December 31,  1994 and MFS's  annual report for  such
fiscal  year,  (iii) financial  and operating  information  with respect  to the
business, operations and prospects of MFS  and PKS furnished to Lehman  Brothers
by  PKS,  (iv) a  comparison  of the  historical  financial results  and present
financial condition of MFS and PKS with those of other companies which it deemed
relevant, (v) a trading  history of the  MFS Common Stock from  May 1993 to  the
date  of such  opinion and a  comparison of  that trading history  with those of
other companies which  it deemed relevant,  (vi) a comparison  of the  financial
terms  of the MFS Preferred  Stock with the terms  of certain other transactions
and securities which it deemed relevant and (vii) KDG's tax bases of its  equity
interests  in MFS and,  based upon the advice  of PKS and  its tax advisors, the
likely tax impact of various disposition  strategies with respect to the  equity
interests  in MFS or  its underlying assets  and the proposed  tax and financial
reporting  treatment  of  the  Spin-off.   In  addition,  Lehman  Brothers   had
discussions  with  the  managements of  each  of  PKS and  MFS  concerning their
respective businesses, operations, assets, financial condition and prospects and
undertook  such  other  studies,  analyses  and  investigations  as  it   deemed
appropriate.  No limitations were imposed by  the PKS Board upon Lehman Brothers
with respect  to  the  investigations  made or  procedures  followed  by  it  in
rendering its opinion.

    In  arriving at  its opinion,  Lehman Brothers  assumed and  relied upon the
accuracy and completeness  of the  financial and  other information  used by  it
without  assuming  any  responsibility  for  independent  verification  of  such
information and has further relied upon the assurances of the managements of PKS
and MFS that they are  not aware of any facts  that would make such  information
inaccurate  or misleading.  With respect to  the financial forecasts  of PKS and
MFS, Lehman Brothers

                                       40
<PAGE>
has assumed that they have been reasonably prepared on bases reflecting the best
currently available estimates and judgments of the managements of PKS and MFS as
to the future financial performance of  PKS and MFS, respectively. In  addition,
Lehman  Brothers  has not  made an  independent evaluation  or appraisal  of the
assets or  liabilities (contingent  or otherwise)  of  PKS or  MFS, nor  was  it
furnished  with any such evaluations or  appraisals. Lehman Brothers has assumed
that the consummation of the Exchange Offer and the Spin-off will not result  in
any   default  or  similar  event  under   any  loan  agreement,  instrument  of
indebtedness or other contract of PKS or  MFS which will not be waived and  that
no more than 6,000,000 shares of Exchangeable Stock will be exchanged for shares
of  Class D Stock in the Exchange Offer. The opinion of Lehman Brothers is based
upon financial,  market,  economic and  other  conditions, and  upon  tax  laws,
accounting  standards and legal and regulatory requirements, as they existed on,
and could be evaluated as of, July 17, 1995 and, with the consent of PKS, Lehman
Brothers has  not  considered possible  changes  in such  applicable  tax  laws,
accounting standards or regulatory and legal requirements.

    In  arriving at its opinion, Lehman Brothers has also relied upon the advice
of PKS and its  tax advisors that  the Exchange Offer and  the Spin-off, and  in
particular  the MFS Recapitalization, are the  most feasible methods of ensuring
that the Spin-off will qualify as a tax-free spin-off for United States  federal
income  tax purposes. In  addition, Lehman Brothers has  further relied upon the
advice of PKS and its legal advisors that  the shares of MFS Common Stock to  be
received by holders of Class D Stock in the Spin-off (other than shares received
by  persons who are "affiliates" of MFS  under the federal securities laws) will
be freely tradeable securities.

    The following is  a summary of  certain factors reviewed  and considered  by
Lehman  Brothers  in  connection  with  its opinion  dated  July  17,  1995. The
preparation of a fairness opinion involves various determinations as to the most
appropriate and  relevant  considerations and  the  application of  the  factors
reviewed  and considered to the particular circumstances and, therefore, such an
opinion is  not  readily susceptible  to  summary description.  Furthermore,  in
arriving  at  its  fairness  opinion,  Lehman  Brothers  did  not  attribute any
particular weight to any  factor considered by it,  but rather made  qualitative
judgments  as to  the significance  and relevance  of each  factor. Accordingly,
Lehman Brothers  believes that  the factors  and considerations  supporting  its
opinion  must  be taken  as a  whole and  that considering  any portion  of such
factors,  without  considering  all  factors,  could  create  a  misleading   or
incomplete  view  of  the process  underlying  its  opinion. In  its  review and
consideration,  Lehman  Brothers  made  numerous  assumptions  with  respect  to
industry  performance,  general  business  and  economic  conditions  and  other
matters, many of which are beyond the control of the Company.

    In connection with its opinion, Lehman Brothers considered (a) a  comparison
of  the Class D Per Share Price with  the sum of (i) the estimated post-Spin-off
Class D Per  Share Price and  (ii) the implied  market value of  the MFS  Common
Stock  and the MFS Preferred Stock estimated  to be received in the Spin-off for
each share of  Class D  Stock (based  on the market  price of  MFS Common  Stock
prevailing  at the time Lehman Brothers  conducted its review); (b) a comparison
of the Class B&C Per Share Price with the sum of (i) the estimated post-Spin-off
Class D Per Share Price multiplied by the  number of shares of Class D Stock  to
be  received for each share of  Class B Stock or Class  C Stock exchanged in the
Exchange Offer and (ii) the implied market value of the MFS Common Stock and the
MFS Preferred Stock estimated to be received  in the Spin-off for each share  of
Class B Stock or Class C Stock exchanged for Class D Stock in the Exchange Offer
(based  on the market  price of MFS  Common Stock prevailing  at the time Lehman
Brothers conducted its review); and (c) an analysis of the projected dilution of
the Class D Stock  as a result  of exchanges of  Exchangeable Securities in  the
Exchange  Offer. Lehman Brothers  performed such analyses  assuming scenarios in
which an aggregate of 3,000,000  shares of Class B Stock  and Class C Stock  are
exchanged,  and in which an  aggregate of 6,000,000 shares  of Class B Stock and
Class C Stock are exchanged.

    In addition,  Lehman Brothers  considered (a)  the benefits  to the  non-PKS
holders  of MFS Common Stock in the MFS Recapitalization; (b) the federal income
tax consequences to PKS if the Spin-off were structured as a taxable transaction
for PKS for United  States federal income tax  purposes (based on the  estimated
amount  of the capital gains tax that could potentially be payable by PKS if its

                                       41
<PAGE>
holdings of securities of  MFS were distributed in  a taxable transaction);  and
(c)  the pro forma effects  of the MFS Recapitalization,  the Exchange Offer for
Exchangeable Stock and the Spin-off, taken as  a whole, on the balance sheet  of
each of KCG and KDG, based upon information provided by management of PKS.

    Lehman  Brothers performed  such procedures in  order to  compare the likely
consequences of the Transactions for holders of each class of PKS stock with the
likely consequences for holders of each  class of PKS stock if the  Transactions
were  not consummated. Based on such  comparison, Lehman Brothers concluded that
there were financial benefits to be derived from the Transactions by the holders
of each class of PKS stock.

    The PKS  Board  retained  Lehman  Brothers  based  upon  its  expertise  and
experience.  Lehman Brothers is  a nationally recognized  investment banking and
advisory firm. Lehman Brothers, as part  of its investment banking business,  is
continuously engaged in the valuation of businesses and securities in connection
with  mergers and acquisitions,  negotiated underwritings, competitive biddings,
secondary distributions of  listed and unlisted  securities, private  placements
and  valuations for  estate, corporate and  other purposes. In  the past, Lehman
Brothers has provided financial advisory and  financing services to PKS and  has
received customary fees for the rendering of such services.

    Pursuant  to the terms of an engagement letter dated April 21, 1995, PKS has
paid Lehman Brothers a fee of $400,000 for services rendered in connection  with
its  opinion to  the PKS Board  of Directors.  PKS has also  agreed to reimburse
Lehman Brothers for  its reasonable expenses,  including professional and  legal
fees  and disbursements of counsel, and to indemnify Lehman Brothers and certain
related persons against certain liabilities in connection with or arising out of
its engagement. In the ordinary course of its business, Lehman Brothers and  its
affiliates  may actively trade the debt and equity securities of MFS for its own
account and for the accounts of customers and, accordingly, may at any time hold
a long or short position in such securities.

    Both the  opinion of  CS First  Boston and  the opinion  of Lehman  Brothers
assume  that less  than an aggregate  of 6,000,000  shares of Class  B Stock and
Class C Stock will be  exchanged for Class D Stock  in the Exchange Offer.  This
assumption  derives from  an understanding between  PKS and  the primary bonding
company for the Construction  & Mining Group.  That understanding provides  that
the  bonding  company is  willing  to provide  bonds  to support  a construction
backlog of up to $3.3 billion if  PKS will not permit the Construction &  Mining
Group  to pay dividends,  redeem stock, make distributions  or take other action
that would reduce the consolidated net worth of the Construction & Mining  Group
below  $315 million. If more than 6,000,000 shares  of Class B Stock and Class C
Stock were tendered  and accepted  in the  Exchange Offer,  and if  PKS were  to
transfer  the corresponding  funds from the  Construction & Mining  Group to the
Diversified Group, as described at "Risk Factors -- Risk Factors Relating to the
Exchange Offer, the Spin-off and PKS Securities -- Transfer from Construction  &
Mining  Group," the consolidated net worth of KCG (which was $505 million at the
end of 1994) might begin to approach the $315 million floor. In that event,  PKS
would  consider (i) placing a limit on the number of shares of Class B Stock and
Class C Stock accepted for exchange, so that exchanges and funds transfers would
not reduce  KCG's consolidated  net worth  below the  $315 million  floor,  (ii)
performing  an analysis  to determine whether  1995 Construction  & Mining Group
earnings would  provide  additional  net worth  sufficient  to  support  current
backlog,  and/or (iii) restructuring  its arrangement with  the bonding company.
PKS believes that a tender of 6,000,000 or more shares of Exchangeable Stock  is
highly unlikely.

    The PKS Board of Directors intends to request "bring-down" fairness opinions
from each of CS First Boston and Lehman Brothers confirming their prior opinions
as of the Spin-off Date, as well as a final report from the Special Committee as
of such date.

    PARTICIPATION  IN THE  EXCHANGE OFFER.   With  certain exceptions, including
Messrs. Walter Scott, Jr., and  Robert Julian, the directors  of PKS and of  KCG
have  advised PKS in writing that they will not tender in the Exchange Offer any
shares  of   Class  C   Stock   held  by   them.   Messrs.  Scott   and   Julian

                                       42
<PAGE>
expect  to tender, in the aggregate, 785,892 shares of Class C Stock pursuant to
the  Exchange  Offer.  See  "Certain  Transactions  --  Intentions  of   Certain
Significant Stockholders Regarding Participation in Exchange Offer."

    PARTICIPATION  IN THE EXCHANGE OFFER IS  VOLUNTARY. SEE "RISK FACTORS" FOR A
DESCRIPTION OF CERTAIN  FACTORS THAT  SHOULD BE  CONSIDERED BEFORE  A HOLDER  OF
EXCHANGEABLE  SECURITIES DECIDES WHETHER  TO PARTICIPATE IN  THE EXCHANGE OFFER.
THE PKS BOARD OF  DIRECTORS RECOMMENDS THAT  HOLDERS OF EXCHANGEABLE  DEBENTURES
TENDER SUCH EXCHANGEABLE DEBENTURES IN THE EXCHANGE OFFER.

    THE  PKS BOARD OF DIRECTORS MAKES  NO RECOMMENDATION WITH RESPECT TO WHETHER
HOLDERS OF  EXCHANGEABLE STOCK  SHOULD  TENDER SUCH  EXCHANGEABLE STOCK  IN  THE
EXCHANGE OFFER.

ABANDONMENT OR MODIFICATION OF TRANSACTIONS

    PKS  reserves the right to abandon or modify the terms of the Exchange Offer
or the Spin-off or both, and PKS will abandon the Exchange Offer if it  abandons
the  Spin-off. Thus, there is no assurance that either the Exchange Offer or the
Spin-off will be  consummated or,  if consummated,  will be  consummated on  the
terms  described  herein. However,  if the  Exchange  Offer is  consummated, the
Spin-off will  be consummated  promptly thereafter.  If the  PKS Board  were  to
consider  abandonment of the Exchange Offer  without abandoning the Spin-off, it
would take into  account the effect  of such  proposal on the  interests of  the
holders  of each class  of Exchangeable Securities  and on the  interests of the
holders of Class D Stock, and would also consider seeking new fairness  opinions
from  its financial advisors. See "The Exchange Offer -- Right of PKS to Extend,
Abandon or  Modify  the  Exchange  Offer" and  "The  Spin-off  --  Condition  to
Spin-off; Right of PKS to Abandon, Defer or Modify the Spin-off."

                                       43
<PAGE>
              SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA OF
        PETER KIEWIT SONS', INC., KIEWIT CONSTRUCTION & MINING GROUP AND
                            KIEWIT DIVERSIFIED GROUP

    The  following  selected historical  and pro  forma  financial data  of PKS,
Kiewit Construction & Mining Group and  Kiewit Diversified Group should be  read
in  conjunction  with PKS's,  Kiewit Construction  &  Mining Group's  and Kiewit
Diversified Group's historical  financial statements and  the notes thereto  and
the  pro forma  financial information and  the notes  thereto included elsewhere
herein or incorporated herein by reference.

    The selected historical financial data for  each of the years in the  period
1990 to 1994 have been derived from audited historical financial statements. The
selected  historical financial data for  the six months ended  June 30, 1994 and
1995, and  as of  June 30,  1995,  have been  derived from  unaudited  financial
statements.  In the opinion  of management, such  unaudited financial statements
reflect all adjustments, consisting only of normal recurring accruals, necessary
to present fairly the  financial position of PKS,  Kiewit Construction &  Mining
Group  and  Kiewit  Diversified  Group  at June  30,  1995  and  the  results of
operations for the  six months  ended June  30, 1994  and 1995.  The results  of
operations for the six months ended June 30, 1995 are not necessarily indicative
of the results that may be expected for the entire 1995 fiscal year.

    The  pro forma results of operations data  for the six months ended June 30,
1995 of PKS, Kiewit  Construction & Mining Group  and Kiewit Diversified  Group,
respectively,  assume that the MFS Recapitalization,  the Exchange Offer and the
Spin-off were  consummated  on  January  1,  1995.  The  pro  forma  results  of
operations data for the year ended December 31, 1994 of PKS, Kiewit Construction
&  Mining Group and Kiewit Diversified  Group, respectively, assume that the MFS
Recapitalization, the  Exchange  Offer  and the  Spin-off  were  consummated  on
December  26, 1993. The pro forma financial  position data of PKS and each Group
as of June 30, 1995, assume that  such transactions were consummated as of  such
date.  The  pro  forma  information assumes,  in  two  separate  scenarios, that
3,000,000 shares (Scenario 1) and 5,000,000 shares (Scenario 2) of  Exchangeable
Stock  and all the Exchangeable Debentures  are exchanged in the Exchange Offer.
Scenario 1 reflects PKS's estimate of the number of shares of Exchangeable Stock
likely to be tendered in the  Exchange Offer, based upon the tender  indications
that  PKS has received from members of the PKS Board of Directors and members of
the KCG  Board  of  Directors, and  PKS's  estimates  of the  likely  number  of
additional  tenders. Scenario 2 is set forth  solely to illustrate the impact of
the tender of substantially  more shares than anticipated  by PKS. PKS does  not
believe that a tender of 5,000,000 shares is likely.

    The  pro forma financial information is  not intended to reflect the results
of operations or  the financial position  of PKS, Kiewit  Construction &  Mining
Group or Kiewit Diversified Group which actually would have resulted had the MFS
Recapitalization,  the Exchange  Offer and  the Spin-off  been effective  on the
dates indicated.  Moreover, the  pro forma  information is  not intended  to  be
indicative  of future results of operations or financial position of PKS, Kiewit
Construction & Mining Group or Kiewit Diversified Group.

                                       44
<PAGE>
              SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            PETER KIEWIT SONS', INC.

<TABLE>
<CAPTION>
                                                                                                      PRO FORMA (1)
                                                                                        -----------------------------------------
                                                      HISTORICAL
                                ------------------------------------------------------  YEAR ENDED DECEMBER       SIX MONTHS
                                                                          SIX MONTHS                            ENDED JUNE 30,
                                                                            ENDED            31, 1994                1995
                                          FISCAL YEAR ENDED                JUNE 30,     -------------------   -------------------
                                --------------------------------------  --------------  SCENARIO   SCENARIO   SCENARIO   SCENARIO
                                 1990    1991    1992    1993    1994    1994    1995    #1 (2)     #2 (2)     #1 (2)     #2 (2)
                                ------  ------  ------  ------  ------  ------  ------  --------   --------   --------   --------
                                                         (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>        <C>        <C>        <C>
RESULTS OF OPERATION:
  Revenue (3)(4)..............  $1,906  $2,049  $1,918  $2,050  $2,704  $1,194  $1,260   $2,704     $2,704     $1,260     $1,260
  Earnings from continuing
   operations before
   cumulative effect of change
   in accounting principle
   (5)(6).....................     108      49     150     261     110      45      71      177        177        154        154
  Net earnings (5)(6).........      80     441     181     261     110      45      71      177        177        154        154
FINANCIAL POSITION:
  Total Assets (3)(4).........   2,966   2,632   2,549   3,634   4,504           3,585                          3,138      3,138
  Current portion of long-term
   debt (3)(4)................      31      15       3      15      33              14                             13         13
  Long-term debt, less current
   portion (3)(4).............     269     110      30     462     908             379                            377        377
  Stockholders' equity (7)....   1,185   1,396   1,458   1,671   1,736           1,842                          1,479      1,479
<FN>
- ------------------------------
(1)  The pro forma results of operations data are computed assuming that the MFS
     Recapitalization, the Exchange Offer and  the Spin-off were consummated  on
     December  26, 1993 and January  1, 1995 for the  fiscal year ended December
     31, 1994 and six  months ended June 30,  1995, respectively. The pro  forma
     financial  position data as of June 30, 1995 assumes that such transactions
     were consummated  as of  such date.  The pro  forma financial  data of  PKS
     should  be read in conjunction  with PKS' historical consolidated financial
     statements and the notes thereto and the "Pro Forma Financial  Information"
     included elsewhere or incorporated by reference herein.

(2)  The  pro  forma  information  assumes,  in  two  separate  scenarios,  that
     3,000,000  shares  (Scenario  1)  and  5,000,000  shares  (Scenario  2)  of
     Exchangeable Stock and all the Exchangeable Debentures are exchanged in the
     Exchange Offer.

(3)  The PKS Board of Directors preliminarily approved a plan to make a tax-free
     distribution  of its  entire ownership  interest in  MFS to  the holders of
     Class D Stock at a special meeting  on June 9, 1995. The operating  results
     of  MFS have  been classified as  a single  line item on  the statements of
     earnings for all periods  presented. PKS's proportionate  share of the  net
     assets of MFS at June 30, 1995 of $447 million has been reported separately
     on the consolidated balance sheet.

(4)  In  October  1993, PKS  acquired  35% of  the  outstanding shares  of C-TEC
     Corporation that have 57% of the available voting rights. In December 1994,
     PKS increased its  ownership in  C-TEC to 49%  and 58%  of the  outstanding
     shares  and voting rights, respectively. In January 1994, MFS, a subsidiary
     of PKS, issued $500 million of 9.375% Senior Discount Notes.

(5)  In 1993, through two public offerings, PKS sold 29% of the common stock  of
     MFS,  resulting in a  $137 million after-tax gain.  In 1994, additional MFS
     stock transactions resulted  in a  $35 million  after-tax gain  to PKS  and
     reduced its ownership in MFS to 67%.

(6)  On  May 5, 1995, the U.S. government and a subsidiary of PKS entered into a
     settlement agreement with  respect to the  Whitney Benefits litigation.  In
     settlement  of all claims, PKS received $135  million on June 2, 1995 which
     it recognized as income.

(7)  The aggregate redemption value  of common stock at  June 30, 1995 was  $1.7
     billion.
</TABLE>

                                       45
<PAGE>
              SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                       KIEWIT CONSTRUCTION & MINING GROUP

<TABLE>
<CAPTION>
                                                                                                      PRO FORMA (1)
                                                                                        -----------------------------------------
                                                      HISTORICAL                            FISCAL YEAR           SIX MONTHS
                                ------------------------------------------------------         ENDED                 ENDED
                                                                          SIX MONTHS       DECEMBER 31,            JUNE 30,
                                                                            ENDED              1994                  1995
                                          FISCAL YEAR ENDED                JUNE 30,     -------------------   -------------------
                                --------------------------------------  --------------  SCENARIO   SCENARIO   SCENARIO   SCENARIO
                                 1990    1991    1992    1993    1994    1994    1995    #1 (2)     #2 (2)     #1 (2)     #2 (2)
                                ------  ------  ------  ------  ------  ------  ------  --------   --------   --------   --------
                                                         (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                             <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>        <C>        <C>        <C>
Results of Operations:
  Revenue.....................  $1,671  $1,834  $1,675  $1,783  $2,175  $  939  $  988   $2,175     $2,175     $  988     $  988
  Earnings before cumulative
   effect of change in
   accounting principle.......      57      23      69      80      77      17      34       75         74         33         32
  Net earnings................      57      23      82      80      77      17      34       75         74         33         32
Per Common Share (3):
  Earnings before cumulative
   effect of change in
   accounting principle.......    2.47    1.12    3.79    4.63    4.92    1.10    2.44     5.88       6.84       2.97       3.54
  Net earnings................    2.47    1.12    4.48    4.63    4.92    1.10    2.44     5.88       6.84       2.97       3.54
  Dividends (4)(5)............    0.25    0.30    0.70    0.70    0.90    0.45    0.45    --         --         --         --
  Stock price (6).............   10.35   14.40   18.70   22.35   25.55   21.90   25.10                          28.20      28.70
  Book value..................   14.99   19.25   23.31   27.43   31.39   28.19   33.92                          36.08      38.23
Financial Position:
  Total assets................     762     849     862     889     967             967                            892        841
  Current portion of long-term
   debt.......................      15       7       2       4       3               2                              2          2
  Long-term debt, less current
   portion....................      14      13      12      10       9               7                              6          6
  Stockholders' equity (7)....     350     400     437     480     505             503                            429        378
  Formula value (6)...........     249     299     351     391     411
<FN>
- ------------------------------
(1)  The pro forma results of operations data are computed assuming that the MFS
     Recapitalization,  the Exchange Offer and  the Spin-off were consummated on
     December 26, 1993 and  January 1, 1995 for  the fiscal year ended  December
     31,  1994 and six months  ended June 30, 1995,  respectively. The pro forma
     financial position data as of June 30, 1995 assumes that such  transactions
     were  consummated as of such  date. The pro forma  financial data of Kiewit
     Construction & Mining Group should be  read in conjunction with the  Kiewit
     Construction & Mining Group's historical financial statements and the notes
     thereto  and the  "Pro Forma  Financial Information"  included elsewhere or
     incorporated by reference herein.
(2)  The  pro  forma  information  assumes,  in  two  separate  scenarios,  that
     3,000,000  shares  (Scenario  1)  and  5,000,000  shares  (Scenario  2)  of
     Exchangeable Stock and all the Exchangeable Debentures are exchanged in the
     Exchange Offer.
(3)  In connection with the  January 8, 1992 reorganization,  each share of  the
     previous Class B and Class C Stock was exchanged for one share of new Class
     B Stock or Class C Stock and one share of new Class D Stock. Therefore, for
     purposes  of computing Class B and Class C Stock per share data, the number
     of shares  for years  1990 and  1991  are assumed  to be  the same  as  the
     corresponding number of shares of previous Class B and Class C Stock. Fully
     diluted  earnings  per share  have  not been  presented  because it  is not
     materially different from primary earnings per share.
(4)  The 1994, 1993 and 1992 dividends include $.45, $.40 and $.30 for dividends
     declared in 1994, 1993 and 1992,  respectively, but paid in January of  the
     subsequent  year. Years 1990 and 1991 reflect  dividends paid by PKS on its
     previous Class B  and Class  C Stock that  have been  attributed to  Kiewit
     Construction  & Mining  Group and Kiewit  Diversified Group  based upon the
     relative formula values of each group  which were determined at the end  of
     each preceding year. Accordingly, the dividends may bear no relationship to
     the  dividends that would have been declared by the Board in such years had
     the new  Class  B  and Class  C  Stock  and  the new  Class  D  Stock  been
     outstanding.
(5)  Pro  forma dividends have not been presented as the amount of any dividends
     that may have  been declared  if the transactions  had occurred  as of  the
     beginning of the respective periods cannot be determined.
(6)  Pursuant  to the Certificate of Incorporation,  the stock price and formula
     value calculations are  computed annually at  the end of  the fiscal  year,
     except that adjustments to the stock price to reflect dividends are made at
     the time such dividends are declared.
(7)  Ownership  of the Class B Stock and  Class C Stock is restricted to certain
     employees conditioned  upon the  execution of  repurchase agreements  which
     restrict  the  employees  from  transferring the  stock.  PKS  is generally
     committed to  purchase  all  Class  B  and  Class  C  Stock  at  the  price
     determined,  when put to PKS by  a stockholder, pursuant to the Certificate
     of Incorporation. The aggregate redemption value of the Class B and Class C
     Stock at June 30, 1995 was $372 million.
</TABLE>

                                       46
<PAGE>
              SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            KIEWIT DIVERSIFIED GROUP

<TABLE>
<CAPTION>
                                                                                                        PRO FORMA (1)
                                                                                          -----------------------------------------
                                                        HISTORICAL
                                  ------------------------------------------------------      YEAR ENDED            SIX MONTHS
                                                                            SIX MONTHS       DECEMBER 31,         ENDED JUNE 30,
                                                                              ENDED              1994                  1995
                                            FISCAL YEAR ENDED                JUNE 30,     -------------------   -------------------
                                  --------------------------------------  --------------  SCENARIO   SCENARIO   SCENARIO   SCENARIO
                                   1990    1991    1992    1993    1994    1994    1995    #1 (2)     #2 (2)     #1 (2)     #2 (2)
                                  ------  ------  ------  ------  ------  ------  ------  --------   --------   --------   --------
                                                           (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                               <C>     <C>     <C>     <C>     <C>     <C>     <C>     <C>        <C>        <C>        <C>
Results of Operations:
  Revenue (3)(4)................  $  235  $  215  $  243  $  267  $  534  $  255  $  274   $  534     $  534     $  274     $  274
  Earnings before cumulative
   effect of change in
   accounting principle
   (5)(6).......................      51      26      81     181      33      28      37      102        103        121        122
  Net earnings (5)(6)...........      23     418      99     181      33      28      37      102        103        121        122
Per Common Share (7):
  Earnings from continuing
   operations before cumulative
   effect of change in
   accounting principle.........    2.20    1.26    4.00    9.08    1.63    1.35    1.75     4.73       4.63       5.39       5.23
  Net earnings..................    1.03   20.30    4.92    9.08    1.63    1.35    1.75     4.73       4.63       5.39       5.23
  Dividends (8)(9)..............    0.70    0.70    1.95    0.50    --      --      --      --         --         --         --
  Stock price (10)..............   35.00   47.85   50.65   59.40   60.25   59.40   60.25                          46.45      46.95
  Book value....................   35.75   47.93   50.75   59.52   60.36   60.10   62.90                          46.45      46.97
Financial Position:
  Total assets (3)(4)...........   2,204   1,801   1,709   2,759   3.549           2,633                          2,261      2,312
  Current portion of long-term
   debt (3)(4)..................      16       8       1      11      30              12                             11         11
  Long-term debt, less current
   portion (3)(4)...............     255      97      18     452     899             372                            371        371
  Stockholders' equity (11).....     835     996   1,021   1,191   1,231           1,339                          1,050      1,101
  Formula value (10)............     835     996   1,021   1,191   1,231
<FN>
- ------------------------------
(1)  The pro forma results of operations data are computed assuming that the MFS
     Recapitalization, the Exchange Offer and  the Spin-off were consummated  on
     December 26, 1993 and January 1,1995 for the fiscal year ended December 31,
     1994  and the six months  ended June 30, 1995,  respectively. The pro forma
     financial position data as of June 30, 1995 assumes that such  transactions
     were  consummated as of such  date. The pro forma  financial data of Kiewit
     Diversified Group should be read in conjunction with the Kiewit Diversified
     Group's historical financial statements and the notes thereto and the  "Pro
     Forma   Financial  Information"  included   elsewhere  or  incorporated  by
     reference herein.

(2)  The  pro  forma  information  assumes,  in  two  separate  scenarios,  that
     3,000,000  shares  (Scenario  1)  and  5,000,000  shares  (Scenario  2)  of
     Exchangeable Stock and all the Exchangeable Debentures are exchanged in the
     Exchange Offer.

(3)  The PKS Board of Directors preliminarily approved a plan to make a tax-free
     distribution of its  entire ownership  interest in  MFS to  the holders  of
     Class  D Stock at a special meeting  on June 9, 1995. The operating results
     of MFS have  been classified as  a single  line item on  the statements  of
     earnings  for all periods  presented. PKS's proportionate  share of the net
     assets of MFS at June 30, 1995 of $447 million has been reported separately
     on the balance sheet.

(4)  In October 1993, the Group acquired 35% of the outstanding shares of  C-TEC
     Corporation that have 57% of the available voting rights. In December 1994,
     the  Group  increased  its  ownership  in  C-TEC  to  49%  and  58%  of the
     outstanding shares and  voting rights, respectively.  In January 1994,  MFS
     issued $500 million of 9.375% Senior Discount Notes.

(5)  In  1993, through two  public offerings, the  Group sold 29%  of the common
     stock of  MFS,  resulting  in  a $137  million  after-tax  gain.  In  1994,
     additional  MFS stock transactions resulted in a $35 million after-tax gain
     to the Group and reduced its ownership in MFS to 67%.

(6)  On May 5, 1995, the U.S. government  and a subsidiary of the Group  entered
     into   a  settlement  agreement  with   respect  to  the  Whitney  Benefits
     litigation. In settlement of all claims, the Group received $135 million on
     June 2, 1995 which it recognized as income.

(7)  In connection  with  the January  8,  1992 reorganization,  each  share  of
     previous Class B and Class C Stock was exchanged for one share of new Class
     B Stock or Class C Stock and one share of new Class D Stock. Therefore, for
     purposes  of computing Class D  Stock per share data,  the number of shares
     for years 1990 and  1991 are assumed  to be the  same as the  corresponding
     number  of shares of the previous Class  B and Class C Stock. Fully diluted
     earnings per share  have not been  presented because it  is not  materially
     different from primary earnings per share.

(8)  The  1992 dividends include $.35 for dividends declared in 1992 but paid in
     January, 1993. Years  1990 and 1991  reflect dividends paid  by PKS on  its
     previous  Class B  and Class  C Stock that  have been  attributed to Kiewit
     Diversified Group and
</TABLE>

                                       47
<PAGE>
<TABLE>
<S>  <C>
     Kiewit Construction & Mining Group  based upon the relative formula  values
     of  each group  which were  determined at the  end of  each preceding year.
     Accordingly, the dividends may bear  no relationship to the dividends  that
     would  have been declared  by the Board in  such years had  the new Class D
     Stock and the Class B and Class C Stock been outstanding.

(9)  Pro forma dividends have not been presented as the amount of any  dividends
     that  may have  been declared  if the transactions  had occurred  as of the
     beginning of the respective periods cannot be determined.

(10) Pursuant to the Certificate of  Incorporation, the stock price and  formula
     value  calculations are  computed annually at  the end of  the fiscal year,
     except that adjustments to the stock price to reflect dividends are made at
     the time such dividends are declared.

(11) Unless Class D Stock becomes Publicly Traded, PKS is generally committed to
     purchase all Class D Stock at the price determined, in accordance with  the
     Certificate  of  Incorporation,  when  put to  PKS  by  a  stockholder. The
     aggregate redemption value of the Class D  Stock at June 30, 1995 was  $1.3
     billion.
</TABLE>

                                       48
<PAGE>
                      SELECTED CONSOLIDATED FINANCIAL DATA
                      OF MFS COMMUNICATIONS COMPANY, INC.

    The  development and acquisition by MFS  of its networks and services during
the periods reflected  below materially  affect the comparability  of that  data
from  one period to another. The  following selected consolidated financial data
should be read in conjunction with the Consolidated Financial Statements of  MFS
and  the notes thereto, incorporated by reference herein. No cash dividends were
paid in any of the periods presented below.

<TABLE>
<CAPTION>
                                                                        FISCAL YEAR ENDED                        SIX MONTHS
                                                    ---------------------------------------------------------      ENDED
                                                    1990 (1)  1991 (2)     1992         1993       1994 (3)    JUNE 30, 1995
                                                    --------  --------  -----------  -----------  -----------  --------------
                                                                  (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                 <C>       <C>       <C>          <C>          <C>          <C>
STATEMENT OF OPERATIONS DATA:
  Revenue:
  Telecommunications services.....................   $ 8,951  $ 23,158     $ 47,585     $ 70,048    $ 228,707      $220,867
  Network systems integration.....................     1,721    14,065       61,122       71,063       58,040        37,478
                                                    --------  --------  -----------  -----------  -----------  --------------
    Total.........................................    10,672    37,223      108,707      141,111      286,747       258,345
Costs and expenses:
  Operating expenses..............................    13,971    33,963       76,667      102,905      273,431       259,017
  Depreciation and amortization...................     7,990    11,761       20,544       34,670       73,869        60,721
  General and administrative expenses.............    11,590    18,429       23,267       34,989       75,576        53,724
                                                    --------  --------  -----------  -----------  -----------  --------------
    Total.........................................    33,551    64,153      120,478      172,564      422,876       373,462
                                                    --------  --------  -----------  -----------  -----------  --------------
Loss from operations..............................   (22,879)  (26,930)     (11,771)     (31,453)    (136,129)     (115,117)
Other income (expense) net (4)....................    (8,052)   (1,314)        (792)       8,464      (17,175)      (13,419)
                                                    --------  --------  -----------  -----------  -----------  --------------
Loss before income taxes..........................   (30,931)  (28,244)     (12,563)     (22,989)    (153,304)     (128,536)
Income tax benefit (expense)......................     --        --            (566)       7,220        2,103          (200)
                                                    --------  --------  -----------  -----------  -----------  --------------
  Net loss........................................  $(30,931) $(28,244)    $(13,129)    $(15,769)   $(151,201)    $(128,736)
                                                    --------  --------  -----------  -----------  -----------  --------------
                                                    --------  --------  -----------  -----------  -----------  --------------
Loss per share (5) ...............................                          $(0.30)      $(0.30)      $(2.42)         $(2.00)
                                                                        -----------  -----------  -----------  --------------
                                                                        -----------  -----------  -----------  --------------
Number of shares (5)..............................                       44,085,000   52,882,000   62,437,000    64,423,000
                                                                        -----------  -----------  -----------  --------------
                                                                        -----------  -----------  -----------  --------------
Ratio of earnings to combined fixed charges and
 preferred stock dividends (6)....................     --        --         --           --           --            --

OTHER DATA:
  EBITDA (7)......................................  $(14,889) $(15,169)    $  8,773     $  3,217   $  (62,260)   $  (54,396)
  Net cash provided by (used in) operating
   activities.....................................   (27,695)  (21,965)      28,741       32,946      (10,442)      (66,833)
  Capital expenditures, including acquisitions of
   businesses, net of cash acquired...............    39,140    92,411      110,171      128,651      576,711       264,293

STATISTICAL DATA (8):
  Circuits in service (9).........................   173,958   465,420      589,130      947,391    1,713,430     2,241,601
  Buildings connected.............................       226       695        1,101        1,583        2,754         3,698
  Route miles (10)................................       127       373          858        1,298        2,405         2,702
  Fiber miles (11)................................    10,359    22,982       38,595       62,154      107,919       136,060
  Switches........................................     --        --         --                 1           12            12

BALANCE SHEET DATA:
  Networks and equipment..........................  $ 82,451  $159,751     $243,243     $370,334   $  787,453    $1,055,581
  Total assets....................................   102,959   204,819      363,299      906,937    1,584,546     1,826,833
  Long-term debt, less current portion............    17,849     7,659          169          143      548,333       596,958
  Stockholders' equity............................   (36,739)  162,538      298,516      811,105      770,103       963,466
<FN>
- ------------------------------
 (1) Reflects the acquisition as of April 1, 1990 of 80% of the common stock  of
     MFS Chicago, which owns MFS's network in Chicago.

 (2) Reflects  the acquisition as of October 17, 1991 of 85% of the common stock
     of MFS/ICC, which owns MFS's  network in the Washington, D.C.  metropolitan
     area.
</TABLE>

                                       49
<PAGE>

<TABLE>
<S>  <C>
 (3) Reflects the acquisition of Centex Telemanagement, Inc. as of May 18, 1994,
     Cylix  Communications Corporation as of November 1, 1994 and RealCom Office
     Communications, Inc. as of November 14, 1994.

 (4) Reflects the  assumption  of $23.6  million  principal amount  of  debt  in
     connection  with the acquisition of MFS  Chicago in April 1990, in addition
     to interest  charged  on  advances  from KDG  through  1990.  MFS  recorded
     interest expense in respect of such advances of $7.2 million in 1990.

 (5) See  Note 2 to  the Consolidated Financial  Statements, which describes the
     calculation of loss per share.

 (6) For each of the five years ended December 31, 1994 and the six months ended
     June 30, 1995, earnings were insufficient to cover fixed charges during the
     periods shown by  the amount of  loss before income  taxes of  $30,931,000,
     $28,244,000,   $12,563,000,  $22,989,000,  $153,304,000  and  $128,536,000,
     respectively.

 (7) EBITDA  consists  of  earnings   (loss)  before  interest,  income   taxes,
     depreciation   and   amortization.   EBITDA  is   commonly   used   in  the
     communications industry  to analyze  companies on  the basis  of  operating
     performance,  leverage and liquidity.  EBITDA is not  intended to represent
     operating results  or  cash  flows  as  determined  by  generally  accepted
     accounting principles. See Consolidated Statements of Cash Flows.

 (8) Information  presented as  of the end  of the period  indicated and derived
     from non-financial records prepared by MFS which are not audited.  Includes
     statistical  data for  the Chicago network  which MFS managed  prior to its
     acquisition by MFS as described in Note 1 above.

 (9) All circuits have been expressed as voice grade equivalent circuits.

(10) Route miles refers to the number of miles of the telecommunications path in
     which the fiber optic cables are installed.

(11) Fiber miles  refers  to the  number  of route  miles  installed  (excluding
     pending  installations) along  a telecommunications path  multiplied by the
     number of fibers along that path.
</TABLE>

                                       50
<PAGE>
                               THE EXCHANGE OFFER

TERMS OF THE EXCHANGE OFFER

    TERMS; POTENTIAL PRORATION.   Upon the terms and  subject to the  conditions
set forth herein and in the Letter of Transmittal (which together constitute the
"Exchange Offer"), PKS hereby offers to exchange and PKS will exchange

    (i)  .416598 of a share of Class D Stock for each outstanding share of Class
    B  Stock and Class C Stock (including all  shares of Class C Stock issued in
    exchange for Exchangeable Debentures),

    (ii)  24.75 shares of  Class C Stock and 24.75  shares of Class D Stock  for
    each  $1,000 principal  amount of  each outstanding  1990 Series Convertible
    Debenture due October 31, 2000 (each such  share of Class C Stock will  then
    be exchangeable for .416598 shares of Class D Stock pursuant to the Exchange
    Offer as described in clause (i) above),

    (iii)   22.98 shares of Class C Stock  and 22.98 shares of Class D Stock for
    each $1,000 principal  amount of  each outstanding  1991 Series  Convertible
    Debenture  due October 31, 2001 (each such  share of Class C Stock will then
    be exchangeable for .416598 shares of Class D Stock pursuant to the Exchange
    Offer as described in clause (i) above), and

    (iv)  19.97 shares of Class D Stock for each $1,000 principal amount of each
    outstanding 1993 Series Convertible Debenture due October 31, 2003,

that is validly tendered and  not properly withdrawn on  or prior to 5:00  p.m.,
Omaha, Nebraska time on the Expiration Date. See " -- Withdrawal Rights," below.
All  outstanding shares  of Class  C Stock  (including shares  of Class  C Stock
issued to  certain employees  of PKS  in connection  with the  Company's  annual
offering  of Class C Stock in 1995), as well as shares of Class C Stock received
by debentureholders in  exchange for Class  C and D  Debentures in the  Exchange
Offer,  will be exchangeable for  Class D Stock pursuant  to the Exchange Offer.
The Exchange  Offer  will be  open  until 5:00  p.m.,  Omaha, Nebraska  time  on
September  29, 1995 unless extended as described herein. Shares of Class B Stock
and Class C Stock accepted for exchange  pursuant to the Exchange Offer will  be
held as treasury shares.

    A  holder of  Exchangeable Stock may  exchange any  or all of  the shares of
Exchangeable Stock  held  by such  holder  for Class  D  Stock pursuant  to  the
Exchange Offer. A decision by a holder of Exchangeable Stock to tender a portion
of  such stock in the Exchange  Offer will not be treated  by PKS as a basis for
exercising  PKS's  right,  under  the  PKS  Certificate  of  Incorporation,   to
repurchase the remaining Exchangeable Stock of such holder.

    A  holder of an Exchangeable Debenture may elect only to exchange the entire
principal amount of such  Exchangeable Debenture for  Offered Stock pursuant  to
the  Exchange  Offer;  partial  exchange of  an  Exchangeable  Debenture  in the
Exchange Offer is not permitted.

    The exchange ratio of shares  of Class D Stock  to be received by  tendering
stockholders  for the  Exchangeable Stock  was established  by the  PKS Board of
Directors  on  June  9,  1995.  In  determining  the  exchange  ratio  for   the
Exchangeable  Stock, the  PKS Board of  Directors employed  the conversion ratio
that was applicable under the PKS Certificate of Incorporation to the January 1,
1995 conversion of Class B Stock and Class C Stock into Class D Stock (I.E., the
ratio of the Class D Per Share Price to the Class B&C Per Share Price at January
1, 1995 of $60.25  to $26.00, or  1:431535) adjusted for  the dividends paid  on
Class  B Stock and Class  C Stock in January  1995 of $.45 per  share and in May
1995 of $.45 per share (yielding a ratio of $60.25 to $25.10, or 1:.416598).  In
lieu  of issuing fractional shares, PKS will round the number of shares of Class
D Stock received  by a  tendering holder of  Exchangeable Stock  to the  nearest
whole  number of shares without any additional consideration being payable by or
to such holder.

    In the case  of the Exchangeable  Debentures, the PKS  Board established  an
exchange  ratio whereby  each Exchangeable Debenture  may be  exchanged for that
number of shares of Class D Stock

                                       51
<PAGE>
(and, in the case of Class C and D Debentures, that number of shares of Class  C
Stock)  that  would have  been  issuable upon  conversion  of such  debenture in
accordance with its terms. In lieu of issuing fractional shares, PKS will  round
the  number of shares of Class D Stock (and Class C Stock in the case of Class C
and D Debentures) received by a tendering holder of an Exchangeable Debenture to
the nearest whole number  of shares without  any additional consideration  being
payable by or to such holder. In addition, interest on the tendered Exchangeable
Debentures accrued to and including the date of the consummation of the Exchange
Offer  will be paid to such holder.  If such Exchangeable Debentures are pledged
to FirsTier Bank, N.A., PKS  will pay such accrued  interest to FirsTier to  the
extent  of interest accrued on the underlying  loan by FirsTier to the holder of
the Exchangeable Debentures, and will pay only the remaining amount directly  to
the debentureholder.

    Although PKS does not anticipate that it will be necessary to impose a limit
on the amount of Exchangeable Stock that may be exchanged in the Exchange Offer,
PKS  expressly  reserves  the right  to  do so  if  the PKS  Board  of Directors
determines that acceptance of  all tendered Exchangeable Stock  would not be  in
the  best interest of  PKS and its stockholders.  If the PKS  Board were to take
such action, it would impose such limit on the tendered Exchangeable Stock  (but
not  on the  tendered Exchangeable  Debentures) on  a pro  rata basis  and would
follow the procedures  otherwise applicable  to a modification  of the  Exchange
Offer.  See "The Exchange Offer -- Right of PKS to Extend, Abandon or Modify the
Exchange Offer."  The PKS  Board might  consider  imposing such  a limit  if  it
concluded  that acceptance  of all shares  of Exchangeable  Stock tendered could
frustrate the  employee incentivization  purposes  of PKS's  employee  ownership
program   for  Class  C  Stock,  given   the  aggregate  amount  of  and/or  the
concentration  of  ownership  of  the  Exchangeable  Stock  tendered.  Any  such
conclusion  would involve a subjective judgment by  the PKS Board based upon the
facts and circumstances at the time of a decision to impose such a limit.  (Such
stock  ownership  program, under  which  Class C  Stock  is offered  to selected
employees of the Construction & Mining Group  each year, is intended in part  to
incentivize  such employees by giving them  a financial stake in the performance
of the sector of the Company's business in which they are employed).

    The  Exchange  Offer  is  not   conditioned  upon  any  minimum  amount   of
Exchangeable Securities being tendered for exchange. However, the Exchange Offer
is  subject to the  Ruling remaining substantially in  effect. See "The Exchange
Offer -- Condition to the Exchange Offer."

    As of June 23, 1995, there were  884,400 shares of Class B Stock issued  and
outstanding,  held by four holders of record, 13,944,365 shares of Class C Stock
issued and  outstanding, held  by 1,255  holders of  record, $805,000  principal
amount  of 1990 Series Convertible Debentures outstanding, held by 41 holders of
record, $1,740,000  principal  amount  of  1991  Series  Convertible  Debentures
outstanding, held by 74 holders of record, and $455,000 principal amount of 1993
Series  Convertible Debentures outstanding, held by  12 holders of record. As of
such date, directors of PKS held, in the aggregate, 4,332,452 shares of Class  C
Stock, $160,000 principal amount of 1990 Series Convertible Debentures, $425,000
principal  amount of 1991  Series Convertible Debentures  and $200,000 principal
amount of 1993 Series Convertible  Debentures. Such directors have indicated  to
PKS  that they do not intend to  tender their Exchangeable Stock pursuant to the
Exchange Offer with the  exception of Walter Scott,  Jr., Chairman of the  Board
and  President of PKS, and Robert E.  Julian, Executive Vice President and Chief
Financial Officer of PKS, who expect to tender, in the aggregate, 785,892 shares
of Class C Stock pursuant to the Exchange Offer. Mr. Scott's intention to tender
Class C  Stock in  the Exchange  Offer  reflects his  assessment (based  on  his
assumptions  as to the amount of Class C Stock to be offered for sale by PKS and
the amount of such stock to be repurchased by PKS or converted to Class D Stock)
of the number of shares of such stock he would otherwise be required to sell  to
PKS,  convert to Class B Stock  or convert to Class D  Stock within the next few
years pursuant to the PKS Certificate  of Incorporation. The PKS Certificate  of
Incorporation  provides that, if for  any reason a holder  owns more than 10% of
the issued and outstanding shares of Class C Stock, on a fully-diluted basis, on
January 1st of any year, such holder must sell back to PKS or convert to Class D
Stock (or, in the case of Mr. Scott, Class B Stock or Class D Stock) that amount
of such Class C Stock  which is in excess of  such 10% limitation. Mr.  Julian's
intention   to   tender   Class   C   Stock   reflects   the   fact   that   his

                                       52
<PAGE>
responsibilities with  PKS  relate  primarily  to  the  Diversified  Group.  See
"Certain   Transactions  --  Intentions   of  Certain  Significant  Stockholders
Regarding Participation  in  Exchange  Offer."  The  Company  expects  that  all
Exchangeable  Debentures, including those held by  the directors of PKS, will be
tendered pursuant  to the  Exchange Offer.  See "Risk  Factors --  Risk  Factors
Relating  to  the Exchange  Offer, The  Spin-off and  PKS Securities  -- Certain
Consequences of Decision Not to Exchange."

    This Prospectus and the Letters of Transmittal are being sent to persons who
were holders of record of Class B  Stock, Class C Stock, Class D Debentures  and
Class C and D Debentures as of the close of business on July 31, 1995, including
those  employees who purchased shares of Class  C Stock in connection with PKS's
annual offering of Class C Stock in 1995.

    Participation  in  the   Exchange  Offer  is   voluntary,  and  holders   of
Exchangeable  Securities should carefully consider whether  or not to accept the
Exchange Offer. See "Risk Factors." Tender by a debentureholder of  Exchangeable
Debentures  held by such debentureholder in  the Exchange Offer will most likely
result in receipt of  the greatest value by  the debentureholder based upon  the
fact  that (i) the  respective formula values  of the Offered  Stock issuable in
exchange for each Exchangeable Debenture will be substantially greater than  the
face  amount of such Exchangeable Debenture and (ii) PKS will not retain any MFS
Common Stock or MFS Preferred Stock after the Spin-off, and therefore would  not
be  able  to distribute  any such  stock  upon a  subsequent conversion  of such
Exchangeable Debenture during its scheduled conversion period. Furthermore,  the
PKS  Board  has  not  made  any  provision  for  any  other  adjustment  to  the
Exchangeable Debentures to reflect the  Spin-off. Accordingly, the PKS Board  of
Directors  recommends  that  holders  of  Exchangeable  Debentures  tender  such
Exchangeable Debentures in the Exchange Offer.

    The PKS Board of Directors makes  no recommendation with respect to  whether
holders  of  Exchangeable Stock  should tender  such  Exchangeable Stock  in the
Exchange Offer.

    There are no dissenter's rights of appraisal in connection with the Exchange
Offer.

    PKS does not intend to terminate the registration of the Class C Stock under
the Exchange Act after the consummation of the Exchange Offer.

PROCEDURE FOR TENDERING EXCHANGEABLE SECURITIES; EXCHANGE OF EXCHANGEABLE
SECURITIES; DELIVERY OF OFFERED STOCK

    PROCEDURE FOR  TENDERING EXCHANGEABLE  SECURITIES.   To tender  Exchangeable
Securities  pursuant  to  the  Exchange Offer,  a  properly  completed  and duly
executed Letter  of  Transmittal (or  facsimile  thereof), any  other  documents
required  by PKS and certificates for the Exchangeable Securities to be tendered
must be  received by  PKS  prior to  5:00 p.m.,  Omaha,  Nebraska time,  on  the
Expiration Date. Separate Letters of Transmittal will be required for the tender
of  (i) the  Class B Stock,  (ii) the Class  C Stock and  (iii) the Exchangeable
Debentures.

    A holder of  an Exchangeable  Debenture may not  tender less  than the  full
principal amount of such debenture in the Exchange Offer.

    A  tender  of  Exchangeable  Securities made  pursuant  to  the instructions
contained herein and  in the  Letter of  Transmittal will  constitute a  binding
agreement,  subject  to  withdrawal  rights  as  described  herein,  between the
tendering securityholder and PKS upon the terms and subject to the conditions of
the Exchange Offer.

    If Exchangeable Stock has been pledged to a lender, the registered holder of
such pledged Exchangeable  Stock must  make appropriate  arrangements with  such
lender   for  valid  tender   of  the  certificates   representing  the  pledged
Exchangeable Stock. If, however,  such lender is FirsTier  Bank, N.A., PKS  will
arrange directly with such bank for the delivery of such pledged certificates to
PKS.  PKS will  deliver the  Offered Stock  issued in  exchange for Exchangeable
Stock directly to any lending institution  to which such Exchangeable Stock  was
pledged  if so directed by  the registered holder of  such pledged stock in such
holder's Letter  of  Transmittal. If  the  Offered Stock  received  in  exchange

                                       53
<PAGE>
for  the tendered Exchangeable Stock  is to be delivered  to a lender other than
FirsTier Bank, N.A., the Letter of  Transmittal must state with specificity  the
information necessary (including name, address and contact person of the lender)
to  effect such  delivery. If  a holder of  pledged Exchangeable  Stock does not
designate the  lending  institution  to  which the  Offered  Stock  received  in
exchange  for tendered  Exchangeable Stock is  to be delivered,  PKS may deliver
such Offered Stock to the exchanging  securityholder, but reserves the right  to
deliver  such Offered Stock directly to a lending institution if PKS believes in
good faith that  such lending  institution is  entitled to  receive the  Offered
Stock under a borrowing arrangement with the exchanging securityholder.

    If  Exchangeable  Debentures have  been  pledged to  a  lender, a  holder of
Exchangeable Debentures must specify  in the related  Letter of Transmittal  the
name  of  the  lending institution  to  which such  Exchangeable  Debentures are
pledged. Execution  and return  of  a Letter  of  Transmittal relating  to  such
pledged   Exchangeable  Debentures   will  constitute,  upon   receipt  by  PKS,
authorization by the exchanging debentureholder  (i) to the lending  institution
to  deliver the  pledged Exchangeable  Debentures directly  to PKS  for exchange
pursuant to the  Exchange Offer and  (ii) to  PKS to deliver  the Offered  Stock
issued  in exchange  for such tendered  Exchangeable Debentures  directly to the
lending institution which  tendered such  Exchangeable Debentures.  Accordingly,
holders who wish to tender pledged Exchangeable Debentures in the Exchange Offer
will  not be required to make any arrangements with the lending institution with
respect to such matters. If a holder of pledged Exchangeable Debentures does not
designate the  lending  institution  to  which the  Offered  Stock  received  in
exchange  for  tendered  Exchangeable Debentures  is  to be  delivered,  PKS may
deliver such Offered Stock to  the exchanging debentureholder, but reserves  the
right  to deliver such  Offered Stock directly  to a lending  institution if PKS
believes in good faith that such lending institution is entitled to receive  the
Offered Stock under a borrowing arrangement with the exchanging debentureholder.

    If  Exchangeable  Debentures  have  been  pledged  to  FirsTier  Bank, N.A.,
execution and return  of the Letter  of Transmittal also  will constitute,  upon
receipt  by  PKS, authorization  to  pay to  FirsTier  Bank, N.A.,  any  and all
interest accrued on loans from FirsTier  Bank, N.A. secured by the  Exchangeable
Debentures through the Exchange Date, from and to the extent of interest accrued
on  the Exchangeable Debentures through the Exchange Date, and otherwise payable
to the  holders of  the  Exchangeable Debentures.  PKS  will pay  the  remaining
portion  of  interest  accrued on  the  Exchangeable Debentures  to  the holders
thereof as soon as practicable after the Exchange Date.

    PERSONS WHO HAVE  PLEDGED EXCHANGEABLE SECURITIES  TO A LENDER  AND WHO  ARE
CONSIDERING  PARTICIPATION IN  THE EXCHANGE OFFER,  OR WHO HAVE  PLEDGED CLASS D
STOCK TO  A LENDER,  SHOULD CONSULT  WITH THE  LENDER AS  TO THE  EFFECT OF  THE
EXCHANGE OFFER AND THE SPIN-OFF ON THEIR LOAN ARRANGEMENTS.

    If   any  certificates   representing  Exchangeable   Securities  have  been
destroyed, lost or stolen, the tendering securityholder must (a) furnish to  PKS
evidence, satisfactory to it in its sole discretion, of the ownership of and the
destruction,  loss or theft  of such certificate, (b)  furnish to PKS indemnity,
satisfactory to  it in  its sole  discretion,  and (c)  comply with  such  other
reasonable requirements as PKS may prescribe.

    The  method  of  delivery  of  certificates  representing  the  Exchangeable
Securities and all other  required documents is  at the option  and risk of  the
tendering   securityholder.  If   certificates  representing   the  Exchangeable
Securities are  sent by  mail, registered  mail with  return receipt  requested,
properly  insured, is recommended  and sufficient time  to ensure timely receipt
should be allowed.

    EXCHANGE OF EXCHANGEABLE SECURITIES;  DELIVERY OF OFFERED  STOCK.  Upon  the
terms  and subject to  the conditions of the  Exchange Offer (including, without
limitation, the  right of  PKS to  impose a  limit on  the number  of shares  of
Exchangeable Stock accepted for exchange in the Exchange Offer), on the Exchange
Date  (as defined below) PKS will accept  for exchange, and will issue shares of
Offered Stock in exchange  for, Exchangeable Securities  that have been  validly
tendered and not properly withdrawn on or prior to the Expiration Date, provided
that  PKS has not otherwise notified  tendering securityholders of its intent to
extend, abandon or  modify the  Exchange Offer. The  Exchange Date  will be  the
Expiration  Date. Exchange of the  Exchangeable Securities accepted for exchange
pursuant to the

                                       54
<PAGE>
Exchange Offer will be made only after timely receipt by PKS of (i) certificates
for such Exchangeable Securities and (ii) a properly completed and duly executed
Letter of Transmittal (or facsimile thereof), together with any other  documents
required  by PKS.  Holders of Exchangeable  Securities so  accepted for exchange
will become holders of record of the Offered Stock on the Exchange Date.

    PKS will deliver certificates representing shares of Offered Stock issued in
exchange  for  Exchangeable  Securities  accepted   for  exchange  as  soon   as
practicable  following such acceptance. If  any tendered Exchangeable Securities
are not  exchanged  pursuant  to  the  Exchange Offer  for  any  reason,  or  if
certificates  are submitted for more Exchangeable Stock than is (i) tendered for
exchange or  (ii) accepted  for exchange,  certificates for  such untendered  or
unexchanged   securities  will  be  returned  without  expense  as  promptly  as
practicable following the  consummation or  abandonment of  the Exchange  Offer.
Under  no  circumstances  will  interest (other  than  interest  accrued  on the
Exchangeable Debentures  to and  including the  Exchange Date)  be paid  by  PKS
pursuant to the Exchange Offer, regardless of any delay in making such exchange.
Tendering  securityholders  are responsible  for payment  of all  stock transfer
taxes, if any, payable in connection with the Exchange Offer.

    All  questions  as  to  the  form  of  documents  and  the  validity,  form,
eligibility  (including time  of receipt),  and acceptance  for exchange  of any
tender of securities and notices of withdrawal will be determined by PKS in  its
sole discretion, which determination will be final and binding. PKS reserves the
absolute  right  to  reject  any  or  all  tenders  of  Exchangeable  Securities
determined by it  not to be  in proper form  or any acceptance  for exchange  of
Exchangeable Securities which may, in the opinion of PKS's counsel, be unlawful.
PKS  also reserves the absolute right to waive any defect or irregularity in any
tender of  Exchangeable Securities.  PKS will  not  be under  any duty  to  give
notification  of any defect or irregularity  in tenders or notices of withdrawal
or incur any liability for failure to give any such notification.

WITHDRAWAL RIGHTS

    Exchangeable Securities  tendered  pursuant to  the  Exchange Offer  may  be
withdrawn  at any time prior to the Expiration Date without penalty on the terms
and conditions  contained  herein. However,  once  the Expiration  Date  occurs,
tenders   of   Exchangeable  Securities   are   irrevocable  by   the  tendering
securityholder. If PKS extends the  Expiration Date, then, without prejudice  to
PKS's  other rights  under the Exchange  Offer, PKS may  retain all Exchangeable
Securities  tendered,  subject  only  to  the  withdrawal  rights  of  tendering
securityholders as described in this section.

    For a withdrawal to be effective, a written, telegraphic, telex or facsimile
transmission  notice of withdrawal must be timely received by PKS at the address
set forth  in the  Letter of  Transmittal. Any  such notice  of withdrawal  must
specify  the  name  of  the  person  who  tendered  the  Exchangeable Securities
precisely as  it  appears  in  the  Letter of  Transmittal  and  the  amount  of
securities  to be  withdrawn. If  certificates have  been delivered  to PKS, the
serial numbers shown on the particular certificates evidencing the  Exchangeable
Securities  to be withdrawn and a signed  notice of withdrawal must be submitted
prior  to  the  physical  release  of  the  certificates  for  the  Exchangeable
Securities  to be withdrawn. Withdrawals may  not be rescinded, and Exchangeable
Securities withdrawn will thereafter be deemed not validly tendered for purposes
of the Exchange Offer. However, withdrawn securities may be retendered by  again
following  the procedures described  herein and in the  Letter of Transmittal at
any time prior to the Expiration Date.

CONDITION TO THE EXCHANGE OFFER

    PKS has received  the Ruling from  the IRS confirming,  among other  things,
that  the Spin-off  and certain related  transactions could be  consummated on a
tax-free basis to the holders of Class D Stock for United States federal  income
tax  purposes.  The Exchange  Offer will  not be  consummated unless  the Ruling
remains substantially in effect  as of the Exchange  Date, as determined by  the
PKS  Board  of  Directors  in  its sole  discretion.  Any  determination  by PKS
concerning the Ruling will be final and binding upon all parties.

                                       55
<PAGE>
    There are no federal or state regulatory requirements or approvals that must
be complied with or obtained as a condition of the Exchange Offer.

RIGHT OF PKS TO EXTEND, ABANDON OR MODIFY THE EXCHANGE OFFER

    PKS expressly  reserves the  right to  abandon the  Exchange Offer  and  not
accept  for exchange any  Exchangeable Securities if the  PKS Board of Directors
reasonably determines that there shall have occurred any material change in  the
business,  financial condition, results of operations  or prospects of MFS or of
the Diversified Group, in the  market price of the MFS  Common Stock, or in  any
other  circumstance, and that,  as a result, consummation  of the Exchange Offer
would no longer be in the best interest of PKS and its stockholders. If the  PKS
Board  were to consider abandonment of the Exchange Offer without abandoning the
Spin-off, it  would  take  into account  the  effect  of such  proposal  on  the
interests  of the holders  of each class  of Exchangeable Securities  and on the
interests of the holders of Class D  Stock, and would also consider seeking  new
fairness  opinions from  its financial advisors.  PKS will  abandon the Exchange
Offer in the event it abandons the  Spin-off. See "The Spin-off -- Condition  to
the Spin-off; Right of PKS to Abandon, Defer or Modify the Spin-off."

    PKS  also reserves the right,  at any time or from  time to time, whether or
not the  condition described  under  "The Exchange  Offer  -- Condition  to  the
Exchange  Offer" shall have been satisfied, (i) to extend the Expiration Date or
(ii) if the PKS Board  of Directors determines for  any reason that such  action
would  be  in the  best  interest of  PKS and  its  stockholders, to  modify the
Exchange Offer in  any respect, by  giving written notice  of such extension  or
modification to the holders of Exchangeable Securities.

    Without limiting the factors the PKS Board might take into account in taking
action  with  respect  to  the  Exchange Offer,  the  PKS  Board  might consider
abandonment or  modification  of  the  terms  of  the  Exchange  Offer  if  such
abandonment  or modification  were determined  to be  appropriate in  light of a
change in applicable law or other unforeseen legal or regulatory considerations.
The PKS Board might also consider imposing a limit on the amount of Exchangeable
Stock that  may  be  exchanged in  the  Exchange  Offer if  it  determines  that
acceptance  of all tendered Exchangeable Stock would not be in the best interest
of PKS and its stockholders. For example, the PKS Board might consider  imposing
such a limit if it concluded that acceptance of all shares of Exchangeable Stock
tendered could frustrate the employee incentivization purposes of PKS's employee
ownership  program for Class C  Stock, given the aggregate  amount of and/or the
concentration  of  ownership  of  the  Exchangeable  Stock  tendered.  Any  such
conclusion  would involve a subjective judgment by  the PKS Board based upon the
facts and circumstances at the time of a decision to impose such a limit. In the
event the PKS Board were  to impose such a limit,  it would impose the limit  on
the   tendered  Exchangeable  Stock  (but   not  on  the  tendered  Exchangeable
Debentures) on a pro rata basis. (In order to avoid having certain rules of  the
Commission  regarding "going  private" transactions from  becoming applicable to
the Exchange Offer, PKS will in any  event impose a limit as described above  to
the extent the consummation of the Exchange Offer in the absence of such a limit
would  result in there being  fewer than 300 holders of  Class C Stock. Based on
such 300-shareholder minimum and the tender indications received from members of
the PKS Board of Directors  and the members of the  KCG board of directors,  PKS
would  not  accept  in  any  event tenders  of  more  than  8,500,000  shares of
Exchangeable Stock. However, the PKS Board would in all likelihood determine  to
impose  such a limit well before  such 300-shareholder minimum or such 8,500,000
maximum were reached, and, as discussed above, the PKS Board may also  determine
to  impose such a limit based on the concentration of ownership of the shares of
Exchangeable Stock  tendered). The  PKS Board  of Directors  does not  presently
intend  to impose a limit  on the amount of  Exchangeable Debentures that may be
exchanged in the Exchange Offer, even if  a limit were imposed on the amount  of
Exchangeable Stock that may be exchanged.

    A total of 59,929 shares of Class C Stock and 69,010 shares of Class D Stock
would  be issuable in the Exchange Offer upon  the acceptance by PKS of a tender
of all Exchangeable  Debentures. A total  of 3,541,083 shares  of Class D  Stock
would  be issuable in the Exchange Offer upon  the acceptance by PKS of a tender
of the maximum level of 8,500,000 shares of Exchangeable Stock, but PKS does not

                                       56
<PAGE>
expect tenders of  Exchangeable Stock  to reach such  level, and  the PKS  Board
would  in all likelihood determine to impose a  limit on the number of shares of
Exchangeable Stock to be accepted in  the Exchange Offer before tenders  reached
such level.

    If  PKS modifies a material  term of the Exchange  Offer, it will extend the
period of time during which the Exchange Offer will remain open if necessary  so
that  the Expiration Date, as  extended, is at least  10 business days after the
announcement of  such modification  and, to  the extent  required by  applicable
securities  laws,  will  file  an appropriate  post-effective  amendment  to the
Registration  Statement  of  which  this  Prospectus  forms  a  part  with   the
Commission.  If PKS  modifies the  terms of  the Exchange  Offer or  extends the
period of time during which the Exchange Offer is open, then, without  prejudice
to  PKS's other rights under the Exchange Offer, PKS may retain all Exchangeable
Securities tendered, subject only  to the tendering securityholder's  withdrawal
rights described above in "The Exchange Offer -- Withdrawal Rights."

    If PKS abandons the Exchange Offer as described herein, then PKS will return
all  tendered certificates representing Exchangeable  Securities as indicated by
the applicable  Letter  of Transmittal  as  soon as  practicable  following  the
announcement of such occurrence.

CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS RELATING TO THE EXCHANGE
OFFER

    The  following  discussion sets  forth  the material  United  States federal
income tax consequences under existing law of the Exchange Offer.

    PKS has received rulings  from the IRS concerning  the treatment of  certain
exchanges  effected under the  Exchange Offer (the  "Exchange Tax Rulings"). The
continuing validity of the  Exchange Tax Rulings is  subject to the validity  of
certain  representations and assumptions made  in connection with obtaining such
rulings. PKS is not aware of any  facts or circumstances that should cause  such
representations or assumptions to be untrue.

    The Exchange Tax Rulings provide, among other things, that for United States
federal income tax purposes:

        (1)  The  exchange of  Offered  Stock for  Exchangeable  Debentures will
    constitute a recapitalization within the meaning of section 368(a)(1)(E)  of
    the  Internal Revenue Code of 1986, as amended (the "Code"), and PKS will be
    "a party to a  reorganization" within the meaning  of section 368(b) of  the
    Code;

        (2)  No gain  or loss  will be  recognized by  a holder  of Exchangeable
    Debentures who elects to participate in the Exchange Offer upon the exchange
    of Offered Stock for Exchangeable Debentures;

        (3) No gain  or loss  will be  recognized by  PKS upon  the exchange  of
    Offered Stock for Exchangeable Debentures:

        (4)  The basis of Offered Stock  received pursuant to the Exchange Offer
    will be the same as the basis of Exchangeable Debentures exchanged therefor;
    and

        (5) The  holding  period  of  Offered Stock  received  pursuant  to  the
    Exchange  Offer will include  the holding period  of Exchangeable Debentures
    surrendered therefor,  provided that  such debentures  are held  as  capital
    assets on the date of the exchange.

    No  tax rulings have been  sought from the IRS  (and none will be requested)
with respect to any tax issues associated with the exchange of Offered Stock for
Exchangeable Stock.  Nevertheless,  in  the  opinion  of  Sutherland,  Asbill  &
Brennan, regular outside tax counsel to PKS, although the issue is not free from
doubt,  such exchange  should constitute  for United  States federal  income tax
purposes a recapitalization within  the meaning of  section 368(a)(1)(E) of  the
Code. In that event, the following United States federal income tax consequences
should follow with respect to such exchange:

                                       57
<PAGE>
        (1)  PKS will  be "a  party to a  reorganization" within  the meaning of
    section 368(b) of the Code;

        (2) No gain or loss will be recognized by a holder of Exchangeable Stock
    who elects to participate in the Exchange Offer upon the exchange of Offered
    Stock for Exchangeable Stock;

        (3) No gain  or loss  will be  recognized by  PKS upon  the exchange  of
    Offered Stock for Exchangeable Stock;

        (4)  The basis of Offered Stock  received pursuant to the Exchange Offer
    will be the same as the basis of Exchangeable Stock exchanged therefor; and

        (5) The  holding  period  of  Offered Stock  received  pursuant  to  the
    Exchange  Offer  will  include  the  holding  period  of  Exchangeable Stock
    exchanged therefor,  provided that  such  Exchangeable Stock  is held  as  a
    capital asset on the date of the exchange.

    If,  contrary to the Exchange Tax Rulings, the exchange of Offered Stock for
Exchangeable Debentures were  taxable, then, among  other consequences, gain  or
loss would be recognized by each holder of Exchangeable Debentures who elects to
participate  in  the  Exchange Offer  upon  the  exchange of  Offered  Stock for
Exchangeable Debentures. Similarly, if, contrary  to the opinion of  Sutherland,
Asbill  & Brennan,  the exchange  of Offered  Stock for  Exchangeable Stock were
taxable, then, among  other consequences, gain  or loss would  be recognized  by
each  holder of  Exchangeable Stock  who elects  to participate  in the Exchange
Offer upon the exchange of Offered  Stock for Exchangeable Stock. The amount  of
any  gain recognized upon  a taxable exchange of  Offered Stock for Exchangeable
Debentures or for Exchangeable Stock would  equal the excess of the fair  market
value  of the Offered Stock over the holder's adjusted basis in the Exchangeable
Debentures or the  Exchangeable Stock,  and the  amount of  any loss  recognized
would  equal  the excess  of  the holder's  adjusted  basis in  the Exchangeable
Debentures or the Exchangeable Stock over  the fair market value of the  Offered
Stock.  For purposes of determining the fair  market value of the Offered Stock,
each share of  Class C Stock  should be treated  as having a  fair market  value
equal  to the Class B&C Per Share Price,  and each share of Class D Stock should
be treated as having a fair market value  equal to the Class D Per Share  Price,
in each case at the time of consummation of the Exchange Offer.

    THE  FOREGOING DISCUSSION IS ONLY A SUMMARY OF CERTAIN UNITED STATES FEDERAL
INCOME TAX CONSEQUENCES OF THE EXCHANGE OFFER UNDER CURRENT LAW AND IS  INTENDED
FOR  GENERAL INFORMATION  ONLY. THE DISCUSSION  MAY NOT  ACCURATELY DESCRIBE THE
TREATMENT OF HOLDERS OF  EXCHANGEABLE SECURITIES IF  SUCH HOLDERS RECEIVED  SUCH
EXCHANGEABLE  SECURITIES AS COMPENSATION, ARE  FOREIGN PERSONS, OR ARE OTHERWISE
SUBJECT TO  SPECIAL  TREATMENT  UNDER  THE CODE.  ALL  HOLDERS  OF  EXCHANGEABLE
SECURITIES   SHOULD  CONSULT  THEIR  OWN  TAX  ADVISORS  AS  TO  THE  PARTICULAR
CONSEQUENCES OF THE  EXCHANGE OFFER TO  THEM, INCLUDING (i)  THE APPLICATION  OF
UNITED  STATES FEDERAL, STATE, AND  LOCAL TAX LAWS, AND  OF FOREIGN TAX LAWS AND
(ii) THE EFFECT OF CHANGES IN LAW, INCLUDING CHANGES HAVING RETROACTIVE EFFECT.

                                  THE SPIN-OFF

MANNER OF EFFECTING THE DISTRIBUTION

    MANNER OF DISTRIBUTION;  SPIN-OFF DATE.   In  the event  that the  condition
described  under "The  Spin-off --  Condition to the  Spin-off; Right  of PKS to
Abandon, Defer or Modify the Spin-off" is satisfied, and unless the PKS Board of
Directors has exercised its right to abandon the Spin-off if it determines  such
action  would be in the best interest  of PKS and its stockholders, the Spin-off
will be declared and be  effected on the Spin-off Date  to holders of record  of
Class  D Stock (including  Class D Stock  issued in the  Exchange Offer) on such
date. Such  holders of  Class  D Stock  will become  holders  of record  of  the
Spin-off  Stock to  which they  are entitled on  or promptly  after the Spin-off
Date. PKS currently anticipates that the Spin-off Date will be the day after the
Expiration Date. PKS expressly  reserves the right, in  its sole discretion,  to
defer  the  Spin-off Date  if  it determines  that such  action  is in  the best
interest of PKS and its stockholders, but if the Exchange Offer is  consummated,
the Spin-off will be consummated promptly thereafter.

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<PAGE>
    The  number of shares of Spin-off Stock to be distributed in respect of each
outstanding share of Class D Stock will be determined on the Spin-off Date. Such
determination will be based on the number of shares of Class D Stock outstanding
on the Spin-off  Date and accordingly  will depend  on the number  of shares  of
Class  D Stock issued pursuant to the  Exchange Offer. See "The Exchange Offer,"
"Overview -- The Spin-off" and "Overview -- The MFS Recapitalization."

    As an administrative and cost-saving  convenience, no certificates or  scrip
representing,  or cash in lieu  of, fractional shares of  Spin-off Stock will be
issued to  holders of  Class D  Stock as  part of  the Spin-off.  To the  extent
fractional  shares of  Spin-off Stock  would otherwise  be issued  to holders of
Class D  Stock  in  the Spin-off,  PKS  will  apply a  convention  whereby  such
fractional shares are rounded to whole shares without affecting the total number
of  shares of Spin-off Stock. For this purpose, PKS will calculate the aggregate
number of shares of MFS Common Stock and MFS Preferred Stock, respectively, that
would otherwise be issuable as fractional shares. Of such number of shares,  one
whole  share will be distributed  to each of those holders  of Class D Stock who
would otherwise be entitled to receive  fractional shares of such stock, in  the
order  of the magnitude  of such fractions,  until all of  such shares have been
distributed. The remaining  holders of  Class D Stock  will not  be entitled  to
receive any consideration in respect of the fractional shares otherwise issuable
to them.

    The  shares of Spin-off Stock will be  fully paid and nonassessable, and the
holders thereof will  not be entitled  to preemptive rights.  The MFS  Preferred
Stock  is subject, by its  terms, to restrictions on  the transfer of such stock
and is subject to the  irrevocable proxy to be granted  by KDG to the  Secretary
and  Assistant Secretary  of MFS. See  "Description of Securities  -- MFS Common
Stock" and "-- MFS Preferred Stock."

    Certificates representing Spin-off Stock will be mailed to holders of  Class
D  Stock as soon  as practicable after  the Spin-off Date.  Because the Spin-off
will require issuance and mailing of a significant number of stock certificates,
a delay of  approximately three to  four weeks in  delivery of the  certificates
representing  Spin-off Stock  will occur.  Holders of  Class D  Stock should not
attempt to sell or transfer MFS  Common Stock received pursuant to the  Spin-off
until they have received the certificates evidencing such stock.

    PKS  will  mail the  certificates representing  the  Spin-off Stock  to each
holder of Class D Stock of record  on the Spin-off Date unless PKS has  received
written  notification from such holder, at least five business days prior to the
date that the  certificates representing the  Spin-off Stock are  to be  mailed,
that  some  or all  of the  Spin-off Stock  received  in the  Spin-off is  to be
delivered to a lending institution  pursuant to a borrowing arrangement  between
the  holder and such lending institution. However, even if no notice is received
by PKS to  such effect, PKS  reserves the  right to deliver  the Spin-off  Stock
received  by a holder of Class D Stock  in the Spin-off to a lending institution
if PKS  believes in  good faith  that such  lending institution  is entitled  to
receive  such Spin-off Stock pursuant to a borrowing arrangement with the holder
of Class D Stock.

    No holder  of Class  D Stock  will  be required  to pay  any cash  or  other
consideration,  or to surrender or exchange shares of Class D Stock or any other
security or to  take any other  action in  order to receive  the Spin-off  Stock
pursuant to the Spin-off.

LISTING AND TRADING OF SPIN-OFF STOCK

    MFS  COMMON  STOCK.   MFS Common  Stock  is currently  traded on  the Nasdaq
National Market under  the symbol  "MFST." It is  expected that  the MFS  Common
Stock  will  continue to  be  traded on  the  Nasdaq National  Market  after the
Spin-off. Because the obligation  of PKS to repurchase  the Class D Stock  under
the  circumstances  and  upon  the  terms  and  conditions  set  forth  in PKS's
Certificate of Incorporation will not apply  to the Spin-off Stock, the  ability
of  a holder of MFS Common Stock to realize value upon a sale of such stock will
be entirely dependent  on the market  for the  MFS Common Stock.  The prices  at
which  the MFS Common Stock will trade  after the Spin-off will be determined by
the marketplace and may be influenced by many factors, including, among  others,
the  continuing depth and liquidity of the market for MFS Common Stock, investor
perception of MFS, the

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<PAGE>
industries in which its businesses  participate and general economic and  market
conditions.  On August 24, 1995  the last reported sale  price of the MFS Common
Stock as reported  by the  Nasdaq National Market  was $45.50.  See "Market  for
Registrant's  Common Stock  and Related Stockholder  Matters" in  the MFS Annual
Report on Form 10-K incorporated  herein by reference for information  regarding
historical ranges of trading prices on MFS Common Stock.

    Shares  of MFS Common Stock distributed in the Spin-off, after giving effect
to the MFS Recapitalization, will constitute approximately 65% of the MFS Common
Stock outstanding. Despite the agreements entered into with the directors of PKS
and MFS in connection  with the Spin-off described  at "Certain Transactions  --
Agreements  Regarding  Restrictions  on  Transfer of  Spin-off  Stock"  below, a
substantial number  of shares  of MFS  Common Stock  will become  available  for
future  sale  in the  public  market after  the  Spin-off. Sales  of substantial
numbers of such shares in the public market in the future could adversely affect
the market price of the MFS Common Stock and could impair MFS's ability to raise
additional capital through the sale of its equity securities.

    Shares of MFS  Common Stock  received by  holders of  Class D  Stock in  the
Spin-off  will be  freely transferable,  except for  shares of  MFS Common Stock
received by directors of PKS and MFS as described below and shares of MFS Common
Stock received by persons who may be deemed to be "affiliates" of MFS within the
meaning of  the Securities  Act  of 1933,  as  amended (the  "Securities  Act").
Persons  who  may be  deemed to  be affiliates  of MFS  after the  Spin-off will
generally include individuals or  entities that control,  are controlled by,  or
are  under common control with MFS and include directors of MFS. Persons who are
affiliates of MFS will  be permitted to  sell their shares  of MFS Common  Stock
received  in the Spin-off  only pursuant to  an effective registration statement
under the Securities Act or an  exemption from the registration requirements  of
the  Securities Act. See "Certain Transactions -- Certain Agreements Between PKS
and MFS -- The Distribution Agreement" for a discussion of the proposed grant to
certain affiliates of MFS  of registration rights with  respect to the  Spin-off
Stock.

    In  connection with the  recent DECS offering  by MFS, MFS  has entered into
agreements with the directors  of PKS (other  than one director  of PKS who  was
elected after the closing of the DECS offering) and the directors of MFS who are
holders  of Class D Stock regarding the MFS  Common Stock to be received by such
directors as a result of the  Spin-off. The agreements prohibit resales of  such
MFS Common Stock for a period of two years from May 24, 1995, subject to certain
exceptions.  See "Certain  Transactions -- Agreements  Regarding Restrictions on
Transfer of Spin-off Stock."

    MFS PREFERRED STOCK.  The terms of the MFS Preferred Stock provide that  the
MFS  Preferred Stock is non-transferable for a period of six years, with limited
exceptions, and is redeemable at the option of MFS beginning at the end of  such
six-year  period. Accordingly, the MFS Preferred  Stock received in the Spin-off
will not  have  any  realizable  resale  value until  the  earlier  of  (i)  its
conversion  into MFS Common Stock  at the option of  the holder beginning on the
first anniversary of the date of issuance thereof or (ii) the expiration of  the
six-year  transfer restriction.  Even at the  end of such  six-year period there
will likely  be  no public  trading  market for  the  MFS Preferred  Stock.  See
"Description of Securities -- MFS Preferred Stock." MFS does not intend to apply
for  listing of the MFS Preferred Stock  on any national securities exchange, on
the Nasdaq National Market or in the over-the-counter market.

CERTAIN EFFECTS OF SPIN-OFF ON CLASS D STOCK

    Because approximately one-third of  the current Class D  Per Share Price  of
$60.25 is attributable to MFS, the Class D Per Share Price will be significantly
reduced  when  the  Spin-off  is  consummated.  For  example,  assuming  in  two
alternative scenarios that  (i) 3,000,000  shares and (ii)  5,000,000 shares  of
Exchangeable  Stock, and  in each case  all of the  Exchangeable Debentures, are
exchanged in the  Exchange Offer, the  estimated Class D  Per Share Price  after
giving  effect  to  the  Spin-off  would  be  $41.00  and  $41.75, respectively.
Accordingly, the price at which holders of Class D Stock can sell such stock  to
PKS  after the Spin-off pursuant to  the Company's obligation to repurchase such
Class D

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<PAGE>
Stock under the  Company's Certificate  of Incorporation  will be  significantly
reduced.  See "Overview -- The Spin-off." As the foregoing alternative scenarios
indicate, the greater the  number of shares of  Exchangeable Stock exchanged  in
the  Exchange  Offer, the  less the  reduction in  the Class  D Per  Share Price
resulting from the Spin-off. This is attributable to the fact that the amount of
the reduction in the Class D Formula Value resulting from the Spin-off will be a
fixed amount equal to PKS's book  investment in the Spin-off Stock, whereas  the
amount of such reduction on a per share basis (I.E., the amount of the reduction
in  the Class D Per Share  Price) will decrease as more  shares of Class D Stock
are issued in the Exchange Offer.  As such alternative scenarios also  indicate,
the greater the number of shares of Exchangeable Stock exchanged in the Exchange
Offer,  the fewer the number of shares of Spin-off Stock (and hence the less the
value of the  Spin-off Stock)  distributed per  share of  Class D  Stock in  the
Spin-off.

    If  and  when  the Class  D  Stock  becomes Publicly  Traded,  the Company's
obligation to repurchase  such stock  will cease. The  Class D  Stock is  freely
transferable.  However, there is  no established trading market  for the Class D
Stock, and there has only been limited trading activity in the past.

    The PKS  Board of  Directors has  considered and  will in  the future  again
consider  the feasibility  and desirability  of listing the  Class D  Stock on a
national securities  exchange  or  on  the Nasdaq  National  Market  or  in  the
over-the-counter  market or taking other action to facilitate the Public Trading
of the Class  D Stock. The  ability to provide  for the listing  of the Class  D
Stock  on  a securities  exchange  or on  Nasdaq will  be  subject to  the laws,
regulations and listing eligibility  criteria in effect from  time to time.  See
"Risk Factors -- Effect of Class D Stock Becoming Publicly Traded."

    A  lender that has extended credit secured by PKS stock, in making decisions
as to how much credit to extend against the collateral held by such lender,  may
assign  a different loan-to-value  ratio to the  Class D Stock  and the Spin-off
Stock after the Spin-off as compared to the loan-to-value ratio assigned to  the
Class  D Stock before the Spin-off. Furthermore, the Class D Per Share Price may
be less readily predictable than the Class B&C Per Share Price has  historically
been,  and the  market value  of the  MFS Common  Stock is  expected to  be more
volatile than the Class D  Per Share Price has  historically been. A decline  in
the Class D Per Share Price of Class D Stock pledged to a lender or a decline in
the  value of MFS  Common Stock pledged to  a lender could  result in the lender
requiring that the borrower  pledge additional collateral. ACCORDINGLY,  PERSONS
WHO  HAVE PLEDGED  EXCHANGEABLE SECURITIES TO  A LENDER AND  WHO ARE CONSIDERING
PARTICIPATION IN THE  EXCHANGE OFFER, OR  WHO HAVE  PLEDGED CLASS D  STOCK TO  A
LENDER,  SHOULD CONSULT WITH  THEIR LENDER AS  TO THE EFFECT  OF THE SPIN-OFF ON
THEIR LOAN ARRANGEMENTS.

CONDITION TO THE SPIN-OFF; RIGHT OF PKS TO ABANDON, DEFER OR MODIFY THE SPIN-OFF

    The  Spin-off  will  not   be  consummated  unless   the  Ruling  shall   be
substantially  in effect with respect  to the Spin-off as  of the Spin-off Date.
There are no federal or state regulatory requirements or approvals that must  be
complied with or obtained as a condition of the Spin-off.

    PKS  expressly reserves  the right, whether  or not  the foregoing condition
shall have been  satisfied, (i)  to defer  the Spin-off  (to a  date certain  or
indefinitely)  or (ii) to abandon  the Spin-off if it  determines for any reason
that such  action is  in the  best interest  of PKS  and its  stockholders.  The
Spin-off  will not necessarily be  abandoned in the event  the Exchange Offer is
abandoned. However, if the Exchange Offer  is consummated, the Spin-off will  be
consummated promptly thereafter.

    PKS  also reserves the right, at  any time or from time  to time, if the PKS
Board of Directors determines for  any reason that such  action would be in  the
best  interest of  PKS and  its stockholders  and whether  or not  the foregoing
condition shall have been satisfied, to modify the terms of the Spin-off in  any
respect  by giving notice of  such modification to the  holders of Class D Stock
(and, prior to  the Expiration Date  of the  Exchange Offer, to  the holders  of
Exchangeable Securities).

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<PAGE>
    Without limiting the factors the PKS Board might take into account in taking
action with respect to the Spin-off, the PKS Board might consider abandonment or
modification  of the terms  of the Spin-off if  such abandonment or modification
were determined to  be appropriate in  light of  a change in  applicable law  or
other unforeseen legal or regulatory considerations.

CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS RELATING TO THE SPIN-OFF

    The  following  discussion sets  forth  the material  United  States federal
income tax consequences of the  Spin-off and certain related transactions  under
existing law.

    SPIN-OFF  CONSIDERATIONS.    PKS  has received  rulings  from  the  IRS (the
"Spin-off Tax  Rulings") relating  to the  treatment for  United States  federal
income  tax purposes of both the Spin-off and the preliminary spin-off by KDG to
PKS of the MFS Common  Stock and MFS Preferred Stock  held by KDG after the  MFS
Recapitalization  (the "Preliminary  Spin-off"). The continuing  validity of the
Spin-off Tax Rulings is subject to  the validity of certain representations  and
assumptions   made  in   connection  with  obtaining   such  rulings,  including
representations or  assumptions regarding  the  conduct of  an active  trade  or
business  by PKS, KDG, and MFS and certain of their subsidiaries both before and
after the Preliminary Spin-off and the Spin-off; the ownership by KDG and PKS of
a controlling interest in  MFS immediately before  the Preliminary Spin-off  and
the  Spin-off, respectively; the distribution of  all the Spin-off Stock held by
KDG and  PKS  immediately before  the  Preliminary Spin-off  and  the  Spin-off,
respectively;  the  business  purposes  for  the  Preliminary  Spin-off  and the
Spin-off; the limited nature of continuing  transactions between MFS and PKS  or
KDG  and the arm's-length nature of payments to be made in connection with those
transactions; the absence, with limited exceptions,  of any plans to dispose  of
the  assets or stock of PKS, KDG or  MFS; the treatment of the Spin-off Stock as
stock of MFS and the Class D Stock as stock of PKS; and the accuracy of PKS, KDG
and MFS financial  information submitted to  the IRS.  PKS is not  aware of  any
facts or circumstances that should cause such representations and assumptions to
be untrue.

    The Spin-off Tax Rulings provide, among other things, that both the Spin-off
and  the Preliminary Spin-off  will qualify as  tax-free spin-offs under section
355 of the Code. The  Spin-off Tax Rulings also  provide that for United  States
federal income tax purposes:

        (1)  No gain or  loss will be recognized  by the holders  of the Class D
    stock upon the distribution of the Spin-off Stock in the Spin-off;

        (2) Except as  provided under section  367(e) of the  Code (relating  to
    distributions  to non-United States  shareholders), no gain  or loss will be
    recognized by  PKS  upon the  distribution  of  the Spin-off  Stock  in  the
    Spin-off;

        (3)  No gain or  loss will be recognized  by either PKS  or KDG upon the
    distribution of the Spin-off Stock in the Preliminary Spin-off;

        (4) Assuming a holder  of Class D  Stock holds such  stock as a  capital
    asset,  such holder's holding period for the Spin-off Stock will include the
    period during which such Class D Stock was held; and

        (5) The  tax basis  of  the Class  D Stock  held  by a  PKS  stockholder
    immediately  prior to the Spin-off will  be apportioned (based upon relative
    market values at  the time of  the Spin-off)  among the Class  D Stock  held
    immediately  after the Spin-off  and the MFS Common  Stock and MFS Preferred
    Stock received by such stockholder in  the Spin-off. For this purpose,  each
    share of Class D Stock should be treated as having a fair market value equal
    to the post-Spin-off Class D Per Share Price.

    The  allocation of tax basis described above should be calculated separately
for each block of shares of Class D Stock with respect to which MFS Common Stock
or MFS Preferred Stock is received; that is, separately for each block of shares
of  Class  D   Stock  that  was   acquired  at   a  different  time   or  at   a

                                       62
<PAGE>
different  cost  from any  other  block. As  soon  as practicable  following the
Spin-off,  PKS  intends  to  make  available  to  its  stockholders  information
regarding  the allocation of  basis between the  Class D Stock  and the Spin-off
Stock.

    Treasury regulations governing section 355 of the Code require that all  PKS
stockholders  who  receive Spin-off  Stock  attach statements  to  their federal
income tax returns for the taxable year in which they receive such stock,  which
statements  show the applicability of  section 355 of the  Code to the Spin-off.
PKS will provide each PKS stockholder  with the information necessary to  comply
with this requirement.

    If,  contrary to the Spin-off Tax  Rulings, the Spin-off were taxable, then,
among other consequences, (i) corporate level  income taxes would be payable  by
the  consolidated group of which PKS is the common parent, based upon the amount
by which the fair market value of the Spin-off Stock distributed in the Spin-off
exceeds PKS's basis therein and (ii) each  holder of Class D Stock who  receives
shares  of Spin-off  Stock would  be treated as  if such  stockholder received a
taxable  distribution,  taxed  first  as  a  dividend  to  the  extent  of  such
stockholder's pro rata share of PKS's available current and accumulated earnings
and  profits, then as a tax-free recovery of such stockholder's tax basis in his
or her Class  D Stock,  and finally as  a sale  or exchange of  property to  the
extent of any excess amount.

    POST-SPIN-OFF CONSIDERATIONS.  Each share of MFS Preferred Stock received in
the  Spin-off  will be  convertible and  redeemable according  to its  terms, as
described below.  In addition,  each share  of such  stock will  be entitled  to
receive  annual cumulative  dividends, payable solely  in cash.  Any accrued but
unpaid dividends at the  time of redemption or  conversion of the MFS  Preferred
Stock  will be reflected in the  redemption or conversion consideration for such
stock. See "Description of Securities -- MFS Preferred Stock."

    No tax rulings have been  sought from the IRS  (and none will be  requested)
with respect to any tax issues associated with either the possible redemption or
conversion  of the MFS Preferred Stock subsequent to the Spin-off or the accrual
or payment of dividends on such  stock subsequent to the Spin-off. In  addition,
potential  holders of MFS Preferred Stock should be aware that the United States
federal income  tax  treatment of  any  such  redemption or  conversion  and  of
dividends  paid  or accrued  on the  MFS  Preferred Stock  may be  controlled or
affected by the particular facts  or circumstances associated with a  particular
holder  or  transaction, changes  in those  facts or  circumstances, intervening
events, changes in, or reinterpretations of, law, and other factors. Subject  to
both this qualification and the general qualification set forth below concerning
persons  consulting their own tax advisors, in the opinion of Sutherland, Asbill
& Brennan,  regular outside  tax counsel  to PKS,  the following  United  States
federal  income tax consequences should follow with respect to the MFS Preferred
Stock after the Spin-off:

        (1) Except with respect  to the possible  receipt of cash  in lieu of  a
    fractional  share  of MFS  Common Stock  and as  described in  paragraph (5)
    below, no gain or  loss should be  recognized by a  holder of MFS  Preferred
    Stock  upon a conversion of such stock into MFS Common Stock or a redemption
    of such stock for MFS Common Stock;

        (2) Individual  holders of  MFS Preferred  Stock should  obtain sale  or
    exchange  treatment on a redemption of such stock for cash if the redemption
    meets one  of  the  tests  of  section  302(b)  of  the  Code  (relating  to
    distributions in redemption of stock);

        (3)  Individual holders of  MFS Preferred Stock  should be considered to
    have received a taxable distribution on  such stock if a redemption of  such
    stock for cash does not meet one of the tests of section 302(b) of the Code;
    in  that event, the distribution will be subject to tax as a dividend to the
    extent of MFS's available current and accumulated earnings and profits, then
    as a tax-free recovery of the holder's tax basis in such stock, and then  as
    a  sale  or exchange  of  property to  the  extent of  any  excess ("Taxable
    Distribution Treatment");

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<PAGE>
        (4) Current cash  dividends paid on  the MFS Preferred  Stock should  be
    subject to Taxable Distribution Treatment; and

        (5) In the event that MFS does not pay current cash dividends on the MFS
    Preferred  Stock, then the United States federal income tax treatment of the
    accrued dividends on  such stock is  uncertain; in general,  holders of  MFS
    Preferred  Stock either should be treated as  if they had received an annual
    dividend of MFS Common Stock  equal in amount to  the amount of the  accrued
    but  unpaid cash dividend ("Case I") or should have no United States federal
    income tax  consequences  until the  MFS  Preferred Stock  is  converted  or
    redeemed  or a subsequent  cash dividend is  paid on the  stock ("Case II"),
    although other treatments may be possible.

    Under Case I,  any stock  dividend deemed paid  on the  MFS Preferred  Stock
should  be  subject  to Taxable  Distribution  Treatment.  Under Case  II,  if a
subsequent cash dividend is paid, then the dividend should be subject on receipt
to Taxable Distribution Treatment;  if a subsequent cash  dividend is not  paid,
but  the holder of the MFS Preferred Stock receives additional cash or shares of
MFS Common Stock for the accrued but unpaid dividends at the time of  redemption
or  conversion of the MFS Preferred Stock, then  the amount of cash or the value
of the shares of MFS Common Stock received by the holder in excess of the  issue
price  of  the redeemed  or converted  MFS Preferred  Stock should  constitute a
distribution from  MFS that  will  be subject  on  redemption or  conversion  to
Taxable Distribution Treatment. PKS understands that MFS has not made a decision
whether  it will file information  returns with the IRS  with respect to accrued
but unpaid cash dividends under Case I, under Case II, or in some other manner.

    Under proposed legislation,  corporate and other  non-individual holders  of
MFS  Preferred Stock may  have a cash  redemption of their  shares of such stock
treated differently from a cash redemption of shares of MFS Preferred Stock held
by individuals. Potential non-individual holders  of MFS Preferred Stock  should
consult their own tax advisors regarding this issue.

    THE  FOREGOING DISCUSSION IS ONLY A SUMMARY OF CERTAIN UNITED STATES FEDERAL
INCOME TAX CONSEQUENCES OF THE  SPIN-OFF AND CERTAIN RELATED TRANSACTIONS  UNDER
CURRENT LAW AND IS INTENDED FOR GENERAL INFORMATION ONLY. THE DISCUSSION MAY NOT
ACCURATELY  DESCRIBE THE  TREATMENT OF  HOLDERS OF  CLASS D  STOCK AND POTENTIAL
HOLDERS OF SPIN-OFF STOCK IF SUCH  HOLDERS RECEIVED SUCH STOCK AS  COMPENSATION,
ARE  FOREIGN PERSONS,  OR ARE OTHERWISE  SUBJECT TO SPECIAL  TREATMENT UNDER THE
CODE. ALL  HOLDERS OF  CLASS D  STOCK AND  POTENTIAL HOLDERS  OF SPIN-OFF  STOCK
SHOULD  CONSULT THEIR OWN TAX ADVISORS AS TO THE PARTICULAR CONSEQUENCES TO THEM
OF BOTH  THE  SPIN-OFF  AND  ANY  TRANSACTIONS  INVOLVING  THE  SPIN-OFF  STOCK,
INCLUDING  (i) THE  APPLICATION OF UNITED  STATES FEDERAL, STATE,  AND LOCAL TAX
LAWS, AND OF FOREIGN  TAX LAWS AND (ii)  THE EFFECT OF CHANGES  IN LAW. PKS  HAS
RECEIVED  CERTAIN  WRITTEN  ADVICE  FROM  THE  NEBRASKA  DEPARTMENT  OF  REVENUE
REGARDING CERTAIN  NEBRASKA STATE  TAX  CONSEQUENCES OF  BOTH THE  SPIN-OFF  AND
POST-SPIN-OFF  TRANSACTIONS INVOLVING  THE STOCK OF  PKS AND  MFS. FOLLOWING THE
SPIN-OFF, PKS WILL PROVIDE CERTAIN  INFORMATION REGARDING THE WRITTEN ADVICE  TO
HOLDERS  OF CLASS D STOCK WHO RECEIVE SPIN-OFF STOCK AND EITHER ARE RESIDENTS OF
NEBRASKA OR REQUEST SUCH INFORMATION.

    PKS has been advised that the  Spin-off will not be a tax-free  distribution
for  Canadian income tax  purposes, and that a  holder of Class  D Stock will be
required to include in income for such purposes the fair market value of the MFS
Common Stock and  MFS Preferred Stock  received. PKS has  requested a  remission
order  from  the  Department of  Finance  in  Canada that  would  remit  the tax
otherwise payable  by the  Canadian-resident holders  of the  Class D  Stock  in
respect  of this income inclusion. PKS does not know whether the requested order
will be issued, but PKS has been advised that there is a significant possibility
that it will not be issued.

                                       64
<PAGE>
                              CERTAIN TRANSACTIONS

INTENTIONS OF CERTAIN SIGNIFICANT STOCKHOLDERS REGARDING PARTICIPATION IN
EXCHANGE OFFER

    Each of  Messrs.  Richard  Colf,  Richard  Geary,  Bruce  Grewcock,  William
Grewcock,  Richard Jaros, Tait Johnson, Lee Kearney, Kenneth Stinson, and George
Toll, Jr. (I.E., the members  of the PKS Board of  Directors who are holders  of
Class  C  Stock other  than Messrs.  Walter  Scott, Jr.  and Robert  Julian) has
advised PKS in writing that he will not tender in the Exchange Offer any  shares
of Class C Stock held by him.

    Furthermore,  each of Messrs.  Roy Cline, Allan  Kirkwood, Ronald Minarcini,
and Thomas Stortz  (I.E., the  members of  the KCG  board of  directors who  are
holders  of Class C Stock and who are not also directors of PKS), other than one
of such KCG directors who is anticipating retirement, has advised PKS in writing
that he will not tender in the Exchange  Offer any shares of Class C Stock  held
by him.

    Walter  Scott, Jr.,  the Chairman of  the Board  and President of  PKS and a
member of the board of directors of each of KCG and MFS, has advised PKS of  his
present intention to tender in the Exchange Offer 471,000 shares of the total of
1,471,000  shares of Class C Stock held by him, reflecting his assessment (based
on his assumptions as to the amount of  Class C Stock to be offered for sale  by
PKS  and the amount of such stock to be repurchased by PKS or converted to Class
D Stock) of the number of shares of such stock he would otherwise be required to
sell to PKS, convert  to Class B Stock  or convert to Class  D Stock within  the
next  few years by virtue of the  percentage limitations on ownership of Class C
Stock contained in the PKS Certificate of Incorporation. The PKS Certificate  of
Incorporation  provides that, if for  any reason a holder  owns more than 10% of
the issued and outstanding shares of Class C Stock, on a fully-diluted basis, on
January 1st of any year, he  must sell back to PKS  or convert to Class D  Stock
(or,  in the case of Mr.  Scott, Class B Stock or  Class D Stock) that amount of
such Class C  Stock which  is in  excess of  such 10%  limitation. In  addition,
FirsTier  Bank, N.A., the  trustee under four irrevocable  trusts created by Mr.
Scott for the benefit  of members of his  family, has preliminarily advised  PKS
that  it is likely, subject  to its review of this  Prospectus, to tender in the
Exchange Offer the 884,400 shares of Class B Stock held in the aggregate by such
trusts.

    Robert Julian, who is a member of the board of directors of each of PKS  and
MFS  but not of KCG, has  advised PKS of his current  intention to tender in the
Exchange Offer all of the  Class C Stock held by  him, reflecting the fact  that
his  responsibilities with  PKS relate  primarily to  the Diversified  Group. In
addition, FirsTier Bank, N.A., the trustee under two irrevocable trusts  created
by  Mr.  Julian for  the benefit  of  members of  his family,  has preliminarily
advised PKS that  it is likely,  subject to  its review of  this Prospectus,  to
tender  in the  Exchange Offer the  55,200 shares of  Class C Stock  held in the
aggregate by such trusts.

                                       65
<PAGE>
    Based on the foregoing indications of intent regarding participation in  the
Exchange Offer, the following table shows the expected holdings of Class C Stock
and  Class D Stock after giving effect to the consummation of the Exchange Offer
of (i) each member of  the PKS Board of Directors,  (ii) the PKS Directors as  a
group and (iii) each person who is a director of KCG but not of PKS, as a group.

<TABLE>
<CAPTION>
                                                                     PERCENT OF                                    PERCENT OF
                                                 NUMBER OF            SHARES OF            NUMBER OF                SHARES OF
                                                 SHARES OF        CLASS C STOCK (1)        SHARES OF            CLASS D STOCK (1)
NAME                                           CLASS C STOCK   SCENARIO 1   SCENARIO 2   CLASS D STOCK       SCENARIO 1   SCENARIO 2
- ---------------------------------------------  -------------   ----------   ----------   -------------       ----------   ----------
<S>                                            <C>             <C>          <C>          <C>                 <C>          <C>
Walter Scott, Jr.............................    1,000,000         8.4         10.1          2,804,851(2)       12.4         11.9
Kenneth E. Stinson...........................      626,412         5.3          6.3             36,412(3)          *            *
Richard Geary................................      528,768         4.5          5.3            161,020(4)          *            *
George B. Toll, Jr...........................      371,883         3.1          3.8             87,711             *            *
Richard W. Colf..............................      363,217         3.1          3.7             72,282             *            *
Leonard W. Kearney...........................      264,009         2.2          2.7            172,282(5)          *            *
Tait P. Johnson..............................      173,433         1.5          1.8             43,433             *            *
Bruce E. Grewcock............................      159,775         1.3          1.6             52,775             *            *
Richard R. Jaros.............................       51,544           *            *            101,639             *            *
William L. Grewcock..........................       22,048           *            *          1,164,323           5.1          5.0
Robert E. Julian.............................      --            --           --               381,075(6)        1.7          1.6
James Q. Crowe...............................      --            --           --               134,281             *            *
Robert B. Daugherty..........................      --            --           --                 9,000             *            *
Charles M. Harper............................      --            --           --                 9,000             *            *
Peter Kiewit, Jr.............................      --            --           --                 2,000             *            *
PKS Directors as a group.....................    3,559,089        30.0         36.0          5,232,084          23.2         22.3
Other KCG Directors as a group...............      388,680         3.3          3.9            159,428             *            *
<FN>
- ------------------------
(1)  Calculated  assuming,  in  two separate  scenarios,  that  3,000,000 shares
     (Scenario 1) and 5,000,000  shares (Scenario 2)  of Exchangeable Stock  and
     all the Exchangeable Debentures are exchanged in the Exchange Offer.

(2)  Does  not include  1,950,691 shares  of Class  D Stock  held in irrevocable
     trusts for family members of Mr. Scott under which the trustee is  required
     to vote with the Company.

(3)  Does  not include  20,000 shares  of Class  D Stock  held in  trusts by Mr.
     Stinson's children.

(4)  Does not include 40,000 shares of Class D Stock held by Mrs. Geary.

(5)  Does not include 25,231 shares of Class D Stock held by Mrs. Kearney.

(6)  Does not include 78,196 shares of Class D Stock held in irrevocable  trusts
     for  family members of  Mr. Julian under  which the trustee  is required to
     vote with the Company.

 *   Less than 1% of the class.
</TABLE>

OPTION AGREEMENT AMONG CERTAIN MEMBERS OF THE PKS BOARD REGARDING SPIN-OFF STOCK

    Pursuant to an agreement  among Richard Geary,  William Grewcock and  Walter
Scott,  Jr., in the event the Spin-off  is consummated, Mr. Geary would have the
option to sell to  Messrs. Grewcock and  Scott all of the  shares of MFS  Common
Stock  and MFS  Preferred Stock  received by  Mr. Geary  in connection  with the
Spin-off. Each of Messrs. Geary, Grewcock and Scott is a member of the PKS Board
of Directors and a holder of  Class D Stock. Mr. Scott  is also a member of  the
MFS  Board  of Directors,  and  Mr. Grewcock  was elected  to  the MFS  Board of
Directors at  the  MFS  1995  annual meeting  of  stockholders.  The  option  is
exercisable at any time within six months after the Spin-off is consummated. The
purchase  price per share of such stock would  be, in the case of the MFS Common
Stock, the  lowest of  (i) the  closing  price of  such stock  on the  date  the
Spin-off  is consummated, (ii)  the closing price  of such stock  on the date on
which notice of exercise of  the option is delivered  and (iii) $35.00, and,  in
the  case of the MFS  Preferred Stock, $1.00 per  share. Unless Messrs. Grewcock

                                       66
<PAGE>
and Scott otherwise agree, in the event the option is exercised, they would each
pay one-half  of the  total purchase  price and  receive one-half  of the  stock
subject  to the option. Any such shares  purchased by Messrs. Grewcock and Scott
would continue to be subject to the agreements described below.

AGREEMENTS REGARDING RESTRICTIONS ON TRANSFER OF SPIN-OFF STOCK

    In connection with MFS's DECS offering, each director of PKS (other than Mr.
Johnson, who was elected to the PKS Board of Directors after the closing of  the
DECS  offering) and each director of MFS  has entered into an agreement with MFS
under which such  director is committed  not to sell  or otherwise transfer  any
shares  of  MFS  Common  Stock received  by  him  as a  result  of  the Spin-off
(including MFS  Common Stock  received upon  conversion of  MFS Preferred  Stock
received  in the Spin-off)  for a period of  two years after  the closing of the
DECS offering (I.E., until May 24, 1997), subject to the following exceptions:

    (1) After the first  year, each such  director and any  person to whom  such
       director  transfers shares pursuant to clauses (2) and (5) below may sell
       an aggregate of 50,000 shares of such MFS Common Stock.

    (2) Such MFS Common Stock may be transferred to family members or trusts for
       their benefit or in connection with estate planning.

    (3) Such MFS Common Stock may be pledged to third party lenders, which would
       be permitted to  resell such stock  in the event  of a default,  provided
       that  any shares so sold by pledgees  will count against the 50,000 share
       limit described in clause (1) above.

    (4) Such MFS Common Stock may be tendered in offers made to MFS stockholders
       generally.

    (5) Such MFS Common Stock may be sold to other directors of PKS or MFS.

    The foregoing restrictions will  not apply to  MFS Common Stock  distributed
with  respect to shares of Class D Stock which were held as of March 31, 1995 by
(i) a trust or other entity not controlled by the director in question, or  (ii)
family  members  of the  director. Further,  MFS  Common Stock  distributed with
respect to shares of Class  D Stock pledged by the  director as of such date  to
third  party lenders may be delivered to the pledgees and will not be subject to
the foregoing restrictions.

    The restrictions imposed by the agreements are subject to waiver by MFS with
the consent of  the representatives of  the underwriters of  the DECS  offering,
which consent may not be withheld unreasonably.

CERTAIN AGREEMENTS BETWEEN PKS AND MFS

    PKS  and MFS have  entered into certain  agreements with respect  to the MFS
Recapitalization, the Spin-off and the  relationships between the two  companies
following the Spin-off. These agreements are described below.

    THE  SECURITIES  PURCHASE  AGREEMENT.    MFS and  KDG  have  entered  into a
Securities Purchase Agreement with respect to the acquisition by PKS from MFS of
the MFS Preferred Stock. Under the Securities Purchase Agreement, MFS has agreed
to effect the  MFS Recapitalization by  issuing to KDG,  immediately before  the
Spin-off,  15,000,000 shares of MFS Preferred Stock in exchange for the transfer
by KDG to MFS of 2,900,000 shares of MFS Common Stock held by KDG.

    Under the Securities  Purchase Agreement,  KDG has  agreed to  grant to  the
Secretary and Assistant Secretary of MFS an irrevocable proxy to vote all of the
shares  of MFS Preferred Stock  in proportion to the vote  of the holders of MFS
Common Stock on all matters other than the election of directors and matters  as
to  which the  holders of  MFS Preferred  Stock vote  as a  separate class under
Delaware corporation law.  Holders of Class  D Stock who  receive MFS  Preferred
Stock  in the  Spin-off will  receive such MFS  Preferred Stock  subject to such
irrevocable proxy. Accordingly, holders of MFS Preferred Stock will have  voting
rights  only with respect  to the election  of directors of  MFS and those other
matters.

                                       67
<PAGE>
    THE DISTRIBUTION AGREEMENT.   PKS and MFS have  entered into a  Distribution
Agreement.  The  Distribution Agreement  provides, among  other things,  for the
principal corporate transactions necessary to consummate the Spin-off, including
the MFS Recapitalization and certain corporate reorganizations by MFS  necessary
to receive the Ruling. In addition, the Distribution Agreement provides that MFS
will  sell to  PKS 28,986 shares  of MFS  Common Stock immediately  prior to the
Spin-off, at a price of $1,000,000 in cash (or approximately $34.50 per  share).
See "Overview -- The Spin-off."

    PKS  and MFS entered into a  Noncompetition Agreement in connection with the
May 1993 initial public  offering of Common  Stock by MFS  (the "MFS IPO").  The
Noncompetition  Agreement will terminate as a  result of the Spin-off. Under the
Distribution Agreement, however, PKS has represented to MFS in writing that  PKS
has  no present intent  to engage, directly  or indirectly, in  the provision of
telecommunications services to  business or government  users, except for  those
activities  that  are currently  permitted  under the  Noncompetition Agreement.
Although this written assurance  from PKS is contained  in a written  agreement,
this  representation  is a  statement  of PKS's  intention  at the  time  of the
execution of the Distribution Agreement, and there can be no assurance that  PKS
will  not  compete  directly with  MFS  in the  provision  of telecommunications
services to businesses or government users in the future.

    Under the Distribution Agreement and subject to the terms of the  agreements
described  under " -- Agreements Regarding  Restrictions on Transfer of Spin-off
Stock" above, MFS has agreed to grant to Walter Scott, Jr. and William  Grewcock
certain  registration rights with  respect to all  the MFS Common  Stock held by
them after the Spin-off, exercisable at their expense, similar to those  granted
to  KDG by MFS pursuant to a  registration rights agreement entered into between
KDG and MFS in  connection with the  MFS IPO. See "The  Spin-off -- Listing  and
Trading of Spin-off Stock -- MFS Common Stock."

    The Distribution Agreement provides that each of PKS and MFS will be granted
access  to  certain  records and  information  in  the possession  of  the other
company, and requires that each  of PKS and MFS  retain all such information  in
its  possession for  a period  of five years  following the  Spin-off. Under the
Distribution Agreement, each company is required to give the other company prior
notice of any intention to dispose of any such information.

    The Distribution  Agreement  provides  that,  except  for  the  expenses  of
registration  of the Offered Stock and  Spin-Off Stock under the Securities Act,
which will be paid by PKS, and except as otherwise set forth in the Distribution
Agreement or in any related agreement, all costs and expenses in connection with
the Spin-off will  be paid by  the party incurring  such expenses. Any  expenses
that  cannot be allocated  on such basis  will be split  equally between PKS and
MFS.

    The Distribution Agreement provides that PKS has no obligation to consummate
the MFS Recapitalization or to consummate the Spin-off.

    (PKS repurchased 700 shares of Class C  Stock on July 12, 1995 and July  19,
1995 in the aggregate, pursuant to such repurchase obligation.)

                              RECENT DEVELOPMENTS

WHITNEY LITIGATION

    In  1974, a subsidiary of PKS ("Kiewit"),  entered into a lease with Whitney
Benefits, Inc., a  Wyoming charitable  corporation ("Whitney").  Whitney is  the
owner, and Kiewit is the lessee, of a coal deposit underlying a 1,300 acre tract
in  Sheridan County,  Wyoming. The coal  was rendered unmineable  by the Surface
Mining Control and Reclamation Act  of 1977 ("SMCRA"), which prohibited  surface
mining  of coal  in certain  alluvial valley  floors significant  to farming. In
1983, Kiewit and Whitney  filed an action  in the U.S.  Court of Federal  Claims
("Claims  Court"), alleging that the enactment  of SMCRA constituted a taking of
their coal without  just compensation. In  1989, the Claims  Court ruled that  a
taking  had occurred and  awarded plaintiffs the  1977 fair market  value of the

                                       68
<PAGE>
property ($60 million)  plus interest. In  1991, the U.S.  Supreme Court  denied
certiorari.  The government  filed two  post-trial motions  in the  Claims Court
during 1992. The government requested a new trial to redetermine the 1977  value
of  the property. The government also filed a motion to reopen and set aside the
1989 judgment  as  void  and  to  dismiss  plaintiffs'  complaint  for  lack  of
jurisdiction.  In  May 1994,  the  Claims Court  entered  an order  denying both
motions. In February  1994, the Claims  Court issued an  opinion which  provided
that  the $60 million judgment would bear interest compounded annually from 1977
until payment. The government appealed the February 1994 and May 1994 orders.  A
hearing on the appeals was held in February 1995.

    On  May 5, 1995, the government and the plaintiffs entered into a settlement
agreement. In settlement of all claims  the government will pay plaintiffs  $200
million  and plaintiffs will deed  the coal underlying the  real property to the
government. Kiewit and  Whitney agreed in  1992 that Kiewit  would receive  67.5
percent of any award and Whitney would receive the remainder. In accordance with
this  agreement, Peter Kiewit  Sons' Co., a  subsidiary of KDG,  received a cash
payment of approximately $135 million on  June 2, 1995. The after-tax effect  of
such  payment  will  be to  increase  the  Class D  Per  Share  Price, effective
beginning on January 1, 1996, by approximately $3.50 over the Class D Per  Share
Price that otherwise would have been in effect for 1996. The settlement will not
affect the Class D Per Share Price in effect for the remainder of 1995.

DECS OFFERING

    Pursuant  to the DECS offering, MFS issued 9,500,000 Depositary Shares, each
representing an interest  in the  DECS. The Depositary  Shares were  sold at  an
issue  price of  $33.50 per share.  Each such Depositary  Share is automatically
convertible on June 15, 1999, if not previously redeemed by MFS or converted  at
the  option of  the holder (as  described below),  into one share  of MFS Common
Stock; provided,  however, that  if the  Spin-off is  not consummated  prior  to
January  1, 1997, each outstanding Depositary Share is automatically convertible
into 1.05 shares of MFS Common Stock  subject, in each case, to adjustment  upon
the  occurrence of certain events. The  DECS (and the related Depositary Shares)
are redeemable, in whole or in part, at  the option of MFS on or after June  15,
1998  but  before June  15, 1999  at the  call price  in effect  on the  date of
redemption divided by the then-current market price of MFS Common Stock, payable
in shares of MFS Common Stock. The DECS (and thereby the Depositary Shares)  are
convertible,  in whole or in part, at the option of the holder of the Depositary
Shares at any time prior to June 15, 1999 (unless previously redeemed) into .820
shares  of  MFS  Common  Stock  per  Depositary  Share  (reflecting  an  initial
conversion  premium of 22% to the market price of the MFS Common Stock), subject
to adjustment upon  the occurrence  of certain  events. However,  if the  holder
converts  on or after January 1, 1997  and the Spin-off is not consummated prior
to such  date, the  holder will  receive .855  shares of  MFS Common  Stock  per
Depositary  Share (reflecting a decreased premium of  17% to the market price of
the MFS Common Stock at the date of issuance of the DECS), subject to adjustment
upon the occurrence of certain events.

    Dividends on the Depositary Shares are cumulative and are payable in  either
cash  or shares of MFS Common Stock at the option of MFS. The DECS rank prior to
the MFS Common  Stock and the  MFS Preferred  Stock with respect  to payment  of
dividends  and on a  parity with the  MFS Preferred Stock  upon liquidation. The
Depositary Shares have qualified for inclusion in the Nasdaq National Market.

AUTHORIZATION OF PREFERRED STOCK OF MFS

    Under the terms of  the MFS certificate of  incorporation, the MFS Board  of
Directors  is authorized, subject to any  limitations prescribed by law, without
stockholder approval, to issue shares of preferred stock in one or more  series.
Each  such  series  of  preferred stock  shall  have  such  rights, preferences,
privileges  and  restrictions,   including  voting   rights,  dividend   rights,
conversion rights, redemption privileges and liquidation privileges, as shall be
determined  by the  MFS Board  of Directors. At  a meeting  of the  MFS Board of
Directors   on    April    26,   1995,    the    MFS   Board    approved,    and

                                       69
<PAGE>
resolved  to submit to the MFS stockholders  for approval at the 1995 MFS annual
stockholders meeting, which was held on August 24, 1995, a proposal to  increase
the number of authorized shares of preferred stock from 1,000,000 to 25,000,000.

    The  purpose of  authorizing the MFS  Board of Directors  to issue preferred
stock and  to  determine its  rights  and  preferences is  to  eliminate  delays
associated  with  a  stockholder vote  on  specific issuances.  The  issuance of
preferred  stock,  while  providing  flexibility  in  connection  with  possible
acquisitions  and  other  corporate  purposes,  could  make  more  difficult  or
discourage the removal of MFS's management or could have the effect of making it
more difficult for a third  party to acquire, or  of discouraging a third  party
from  acquiring,  a  majority  of  the outstanding  voting  stock  of  MFS. Upon
consummation of the MFS  Recapitalization, which was approved  by a majority  of
the  common stockholders of MFS present in person  or by proxy and voting at the
1995 MFS annual stockholders meeting,  15,000,000 shares of MFS Preferred  Stock
will  be  issued to  KDG and  distributed to  holders  of Class  D Stock  in the
Spin-off.

CORPORATE GOVERNANCE OF MFS

    At a meeting of the MFS Board of Directors on April 26, 1995, the MFS  Board
approved,  and resolved to submit to the stockholders of MFS for approval at the
1995  annual  meeting  of  MFS  stockholders,  certain  amendments  to  the  MFS
certificate  of  incorporation,  which  include  proposals  to:  amend  the  MFS
certificate of incorporation  to divide the  MFS Board of  Directors into  three
classes,  prohibit stockholders  of MFS from  taking action  by written consent;
require that special meetings of stockholders be called only by the MFS Board or
the chairman of  the MFS Board;  and require  the affirmative vote  of at  least
66  2/3% of the outstanding  shares of stock of MFS  entitled to vote thereon to
adopt, repeal, alter, amend or rescind the  by-laws of MFS. PKS agreed that,  if
the MFS Recapitalization was approved by the non-PKS holders of MFS Common Stock
as  described herein, PKS would vote all of the shares of MFS Common Stock owned
or controlled by  it in favor  of the proposed  amendments, thus assuring  their
adoption.  The proposed amendments to the  MFS certificate of incorporation were
adopted at the MFS 1995 annual meeting of stockholders.

    In addition,  at its  April 26,  1995 meeting,  the MFS  Board of  Directors
adopted  certain  amendments  to  the by-laws  of  MFS  that  prescribe specific
procedural requirements for the nomination of directors and the introduction  of
business  by a stockholder of record at  an annual meeting of stockholders where
such business is not specified in the notice of meeting or brought by or at  the
direction  of the board of  directors. The MFS Board  of Directors also plans to
consider in  the  near  future  the  adoption  of  a  shareholder  rights  plan.
Notwithstanding  the receipt  of the  requisite stockholder  approval or further
approval of  the  MFS  Board,  each  of  the  proposed  amendments  to  the  MFS
certificate  of incorporation  and the MFS  by-laws, as well  as any shareholder
rights  plan  adopted  by  the  MFS  Board,  would  be  implemented  only   upon
consummation of the Spin-off.

    Each  of the foregoing amendments, as well  as the adoption of a shareholder
rights plan,  could make  more  difficult or  discourage  the removal  of  MFS's
management  or could  have the effect  of making  it more difficult  for a third
party to acquire, or of discouraging a third party from acquiring, a majority of
the outstanding voting stock of MFS for  the purpose of a hostile takeover.  The
intent of the measures adopted by the MFS Board of Directors, however, is not to
prevent  an  acquisition.  If an  offer  were  to be  made,  these  measures are
designated  to  require  potential  acquirers  to  make  financially  attractive
non-coercive  offers that treat all stockholders  fairly, to guard against share
accumulations in  which  control  of  MFS  could pass  to  one  or  a  group  of
stockholders  without paying a control premium to the others, and to provide the
MFS Board of Directors with sufficient time to consider any and all alternatives
for maximizing stockholder value.

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CALIFORNIA ANNOUNCEMENT

    On July 27, 1995, MFS announced that it had applied to the California Public
Utilities  Commission for a certificate authorizing MFS Intelenet to provide the
full range of competitive local telephone exchange services. At this time, it is
not possible to  assess the full  effect of  the determination by  the State  of
California's  Public Utilities  Commission to  open the  State's local telephone
service market  to "full"  competition, because,  based upon  recent  regulatory
announcements  in California, MFS will be able  to compete only if it receives a
certificate from  the  California Public  Utilities  Commission and  only  after
January  1, 1996. "Full" competition is not  scheduled to begin until January 1,
1997.

VENDOR FINANCING

    On July 19,  1995, MFS  announced the  establishment of  two secured  credit
facilities  aggregating  $120  million  for the  purchase  of  certain switching
equipment. The  facilities  are  secured  by the  equipment  and  are  partially
guaranteed by the Swedish Export Credits Guarantee Board.

                           DESCRIPTION OF SECURITIES

PKS STOCK

    The  PKS  Certificate  of  Incorporation  authorizes  the  Company  to issue
183,250,000 shares  of  capital  stock:  8,000,000  shares  of  Class  B  Stock;
125,000,000  shares of Class  C Stock; 50,000,000  shares of Class  D Stock; and
250,000 shares of no par value preferred stock.

    The primary features of the Class B Stock, the Class C Stock, and the  Class
D Stock are described below. The Class B Stock has the attributes of the Class C
Stock,  with two exceptions: (a)  the Class B Stock  does not have voting power,
unless required by  law, and (b)  the PKS Board  may redeem all  of the Class  B
Stock  at any  time with payment  at a  price equal to  the Class  B&C Per Share
Price. For purposes of discussing their common attributes, the Class B Stock and
the Class C Stock are referred to herein collectively as the "Class B&C Stock."

    VOTING.  The PKS Certificate of Incorporation provides that holders of Class
C Stock and Class D  Stock have one vote per  share on all matters submitted  to
stockholders, except that, with respect to the election of directors, holders of
Class  C Stock  have cumulative  voting rights.  Cumulative voting  means that a
stockholder may (i) give one nominee as many votes as the number of directors to
be elected multiplied  by the number  of such stockholder's  shares or (ii)  may
distribute  such stockholder's votes among some or all of the director nominees.
Class D directors are elected separately by the holders of Class D Stock by  the
plurality  voting method. In  plurality voting, a stockholder  may vote the full
number of such stockholder's shares for as many nominees as there are  directors
to  be elected. Under both methods, after the voting is closed, the nominees are
ranked in order of  the number of  votes received by  each nominee. The  highest
ranking nominees are elected until the number of open directorships is filled.

    The PKS Certificate of Incorporation provides that certain corporate actions
must  be approved by  the holders of at  least 80% of  the outstanding shares of
Class C Stock and at least a  majority of all the outstanding shares having  the
power to vote (I.E., the Class C Stock and the Class D Stock). Such actions are:
(1) the sale of all or substantially all of the Company's assets; (2) the merger
with  other corporations, other than majority-owned subsidiaries of the Company;
(3) the dissolution of the Company; (4) the creation of new classes of stock  of
the  Company; (5) an increase or decrease  in the number of authorized shares of
any class of stock of the Company;  (6) a change in the rights, preferences  and
limitations  of any class of stock of the Company; (7) a change in the method of
determination of the Class B&C Formula Value  or the Class B&C Per Share  Price;
and (8) the sale of Class B Stock and Class C Stock to non-employees, including,
but  not limited to, in the case of  a public offering. With respect to item (5)
above, Delaware law  requires that the  holders of  at least a  majority of  the
outstanding  shares of Class D Stock  approve separately an increase or decrease
in the  number  of  authorized shares  of  Class  D Stock.  The  Certificate  of
Incorporation,  however, specifically provides that an increase in the number of
authorized shares of Class C Stock does not require the separate approval of the
holders of Class  D Stock.  In addition,  with respect  to item  (6) above,  the
separate

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approval  of at  least a  majority of  the outstanding  shares of  Class D Stock
entitled to vote  thereon would  be required under  Delaware law  to change  the
rights,  preferences and limitations of the Class D Stock in a manner that would
adversely affect the Class D Stock.  Any changes in the method of  determination
of  the Class D Formula Value or the Class D Per Share Price require approval by
at least  80% of  the outstanding  shares of  Class C  Stock and  Class D  Stock
entitled to vote thereon, voting separately.

    Amendments to the PKS Certificate of Incorporation, as well as amendments to
the  by-laws of the Company,  require the approval of 66  2/3% of the holders of
Class C Stock voting as a separate class, as well as the approval of a  majority
of  the combined voting  classes except as otherwise  described above and except
with respect to  any provisions containing  a supermajority voting  requirement,
which  may be amended only  upon the approval of  a matching supermajority vote.
Therefore, if the  PKS Certificate  of Incorporation provides  that a  corporate
action must be approved by 80% of the holders of Class C Stock and a majority of
the  holders of Class C  Stock and Class D Stock,  such provision can be amended
only by the approval of 80%  of the holders of Class  C Stock and a majority  of
the holders of Class C Stock and Class D Stock.

    The  holders of Class  C Stock and the  holders of Class  D Stock shall vote
together as a combined class on all other matters to be voted on by the  holders
of common stock, with each share of Class C Stock having one vote and each share
of Class D Stock having one vote.

    THE  PKS BOARD OF DIRECTORS.   The PKS Certificate of Incorporation contains
provisions relating to the number  of, the nomination procedures regarding,  and
the  qualifications  of  the  directors  of  the  Company  and  provides  for  a
"classified" board of directors.

    The members of the PKS Board are "classified" as Class C directors or  Class
D  directors. The  Class C  directors are elected  separately by  the holders of
Class C Stock, and the Class D  directors are elected separately by the  holders
of  Class D Stock. The sitting  PKS Board may fix, from  time to time by its own
resolution, the  number of  directors required  to  serve on  the PKS  Board  of
Directors.  The PKS Certificate of Incorporation  provides that at any time, the
PKS Board must  consist of  at least  9, but not  more than  15, directors.  The
holders  of Class C Stock elect that  number of directors that equals two-thirds
of the total  number of  directors comprising  the PKS  Board at  any time.  The
remaining  directors are elected by the holders  of Class D Stock. Prior to each
annual meeting of PKS stockholders, the  incumbent Class C directors nominate  a
successor  slate  of Class  C  directors, and  the  incumbent Class  D directors
separately nominate a successor slate of Class D directors.

    The PKS Certificate of Incorporation also provides that at least 80% of  the
Class C directors must be "inside" directors. To be eligible to be elected as an
"inside"  Class C director, a person must: (a)  be a Class C stockholder; (b) be
an officer of  the Company or  one of its  majority-owned subsidiaries which  is
engaged  in the construction or  mining business; and (c)  have been employed by
the Company or such subsidiary for a  full eight years prior to being  nominated
as a Class C director. If such an "inside" director later ceases to meet all the
requisite  qualifications, thereby causing the "inside"  Class C directors to be
less than 80% of the entire Class  C directors, the other Class C directors  may
retain  such director  under certain  specified circumstances.  Any vacancies in
Class C or Class D  directorships for any reason,  including but not limited  to
removal  by the holders of  Class C Stock or  Class D Stock as  the case may be,
will be filled by the remaining Class C or Class D directors, respectively.

    The PKS Certificate of  Incorporation provides that  most PKS Board  actions
require  the approval  of a  majority of  the members  of the  entire PKS Board,
except for  certain matters  which require  the approval  of two-thirds  of  the
members of the PKS Board of Directors.

    DIVIDENDS.   Holders of the several classes of PKS common stock are entitled
to dividends when, as and if declared by the PKS Board, but only after provision
is made for any dividends declared on any PKS preferred stock. Dividends on  the
Class D Stock will be payable only out of the Available Class D Dividend Amount;
dividends  on the Class B&C Stock will be payable only out of the amount legally
available therefor, less the Available Class D Dividend Amount.

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    Subject to the limitations set forth above,  the PKS Board may at any  time,
in  its sole discretion, declare and pay dividends  on the Class B Stock and the
Class C Stock only,  on the Class  D Stock only,  or on the  Class B Stock,  the
Class  C Stock and the  Class D Stock in equal  or unequal amounts. However, any
dividends per share declared and paid on the Class B Stock and the Class C Stock
must be in equal amounts. See "-- Equalizing Stock Dividends," below.

    LIQUIDATION.  Upon the  liquidation or dissolution  of the Company,  whether
voluntary or involuntary, the PKS Certificate of Incorporation provides that any
funds  remaining  for  distribution to  the  holders  of common  stock  shall be
distributed as described below. The PKS  Board of Directors shall determine  the
value  of the remaining assets and shall allocate such value to a "D Liquidation
Account" and  a  "B&C Liquidation  Account."  Allocation to  the  D  Liquidation
Account shall be in an amount equal to the value of the Diversified Group assets
plus  an  amount equal  to 50%  of the  aggregate stockholders'  equity (whether
positive or  negative)  of  PKS  and  any  non-operating  subsidiaries  of  PKS.
Allocation  to the B&C  Liquidation Account shall  be in an  amount equal to the
value of the remaining  assets. The PKS Board  shall then make distributions  as
follows:

        (a)  First, each holder of  Class B&C Stock shall  be paid a liquidation
    preference in an amount  equal to $1.00 per  share. The aggregate amount  of
    such  payments shall  be deducted from  the B&C Liquidation  Account. To the
    extent that  the  initial  B&C  Liquidation Account  is  not  sufficient  to
    distribute  $1.00  per share,  the amount  required to  reach the  Class B&C
    liquidation preference  of $1.00  per share  shall be  deducted from  the  D
    Liquidation Account.

        (b)  Second, each holder  of Class D  Stock shall be  paid a liquidation
    preference in an amount  equal to $2.00 per  share. The aggregate amount  of
    such distribution shall be deducted from the D Liquidation Account remaining
    after  any deductions described  in paragraph (a) above.  To the extent that
    the D Liquidation Account is not sufficient to satisfy the aggregate  amount
    of the Class D liquidation preference payments, an amount necessary to reach
    such  liquidation preference may  be deducted from  any remaining balance in
    the B&C Liquidation Account.

        (c) If,  after  satisfying  the  liquidation  preferences  specified  in
    paragraphs  (a)  and  (b) above,  a  balance  remains in  the  D Liquidation
    Account, an amount equal  to that balance shall  be distributed pro rata  to
    the  holders of Class  D Stock. Similarly,  if a balance  remains in the B&C
    Liquidation Account, an amount  equal to that  balance shall be  distributed
    pro rata to the holders of Class B&C Stock.

    Any  determination  by  the  PKS  Board of  Directors  of  asset  values for
liquidation purposes shall be final and may be based on the books and records of
the Company. The PKS Certificate of Incorporation does not require the PKS Board
to  obtain   appraisals  or   independent  audits   in  connection   with   such
determination.

    OWNERSHIP  AND TRANSFER RESTRICTIONS.   The PKS Certificate of Incorporation
contains no  ownership or  transfer restrictions  with respect  to the  Class  D
Stock.  Furthermore, purchasers  of Class  D Stock  are not  required to execute
repurchase agreements as a condition to such purchase.

    Class B&C Stock  may be owned  only by  employees of the  Company and,  with
prior  PKS Board approval,  by certain authorized  transferees of such employees
(I.E., fiduciaries  for the  benefit of  members of  the immediate  families  of
employees, corporations wholly owned by employees or employees and their spouses
and/or  children, fiduciaries for  the benefit of  such corporations, charities,
and fiduciaries for  charities designated by  any such persons).  Under the  PKS
Certificate  of Incorporation, an employee of  a subsidiary of which the Company
owns at least a 20  percent equity interest (or any  joint venture in which  the
Company  and/or such subsidiary owns at least  a 20 percent equity interest), is
deemed to  be an  employee for  purposes  of Class  B Stock  and Class  C  Stock
ownership  and the attendant  transfer restrictions. A director  who is a former
employee may continue to own Class B Stock  and Class C Stock. No more than  ten
percent   of   the   total   Class   C  Stock   may   be   owned   by   any  one

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employee and certain transferees at any time. Walter Scott, Jr., Chairman of the
Board and Chief  Executive Officer of  PKS, and his  authorized transferees  may
hold  no  more  than  15% of  the  combined  Class  B Stock  and  Class  C Stock
outstanding at any time.

    REPURCHASE AGREEMENT.  Each holder of Class C Stock is required to execute a
repurchase agreement which provides that a stockholder may offer to sell all  or
part  of the Class C Stock owned by  such stockholder to the Company at any time
at the Class  B&C Per  Share Price  and that the  Company must  accept any  such
offer, with payment to be made within 60 days after the receipt of notice of the
offer  and of the stock certificates offered by the stockholder. Upon the tender
of a part of such stockholder's shares of Class C Stock, the Company may, at its
option, require the stockholder to  sell all of the Class  C Stock held by  such
stockholder  back to the  Company. Under the  repurchase agreement, the employee
may not transfer the shares of Class C  Stock held by such employee except in  a
sale  to the Company or a transfer to an authorized transferee (I.E., a charity,
etc.). Upon the death, termination or  retirement of such employee, all Class  C
Stock held by the employee and by such employee's authorized transferees must be
sold back to the Company.

    Under  the repurchase  agreement, an attempted  prohibited transfer, whether
voluntary or involuntary, is deemed to constitute an offer by the employee-owner
which triggers the  Company's duty  to repurchase. The  attempted transferor  or
attempted transferee then receives cash payment at the Class B&C Per Share Price
and  is deemed  to have tendered  the stock,  which is treated  as cancelled. An
attempted prohibited transfer during a suspension of repurchase duties would  be
treated  as an involuntary transfer. The sale and purchase event would be deemed
complete, but payment  would be  deferred. See additional  discussion under  "--
Repurchase Duties," below.

    REPURCHASE  OF EXCESSIVE STOCK.   Upon a  determination by the  PKS Board of
Directors that  the amount  of Class  C Stock  held by  an employee  and/or  the
employee's  authorized transferee is  excessive in view  of the Company's policy
that the level of an employee's  Class C Stock ownership should reflect  certain
factors,  including but  not limited  to (a)  the relative  contribution of that
employee to the economic  performance of the Company,  (b) the effort being  put
forth by such employee, and/or (c) the level of responsibility of such employee,
the  Company has the  option to repurchase  from the employee  or the employee's
authorized transferee an amount of stock that the PKS Board of Directors, in its
discretion, believes is appropriate.

    VOTING LIMITATION.  If  at any time  a stockholder who  owns ten percent  or
more  of the  outstanding Class  C Stock  also owns  50 percent  or more  of the
outstanding Class D Stock, the stockholder will lose the voting power related to
such Class  C  Stock. Voting  power  will  be restored  when  the  stockholder's
holdings  of Class D  Stock are reduced below  the 50 percent  level or when the
stockholder's holdings of Class C Stock are reduced below the ten percent level.

    CLASS D FORMULA VALUE.  The Class D Formula Value is an amount equal to  (a)
the  aggregate stockholders' equity  of the entities  comprising the Diversified
Group (as  shown on  the consolidated  balance sheet  contained in  the  audited
consolidated financial statements of the Diversified Group) as of the end of the
preceding  fiscal  year,  plus (b)  50%  of the  aggregate  stockholders' equity
(whether positive or negative) of PKS (and any non-operating subsidiaries).

    CLASS D PER  SHARE PRICE.   The  Class D Per  Share Price  is determined  by
increasing  the Class D Formula  Value by the portion of  the face amount of any
outstanding  debentures  convertible  into  Class   D  Stock  on  the  date   of
determination.  The resulting amount is then divided by the sum of (x) the total
number of shares  of Class  D Stock  issued and outstanding  at the  end of  the
fiscal  year and (y) the  total number of shares  reserved for the conversion of
convertible debentures attributable to the Diversified Group outstanding at  the
end  of the fiscal year. This quotient is  rounded to the nearest $0.05 and then
reduced by the amount of dividends declared on each share of Class D Stock since
the end of the prior fiscal year.

    CLASS B&C FORMULA VALUE.  The Class B&C Formula Value is an amount equal  to
(a)  the total stockholders' equity of the Company (as shown on the consolidated
balance sheet, and any redeemable

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stock  not  reflected  in  stockholders'   equity,  contained  in  the   audited
consolidated   financial  statements   of  the  Company   and  its  consolidated
subsidiaries) as of the end  of the preceding fiscal year,  LESS (b) the sum  of
(i)  the book value  of the property,  plant and equipment  that are utilized or
associated  with  the  Company's   ordinary  and  regular  course   construction
activities,  (ii) the book  value of any preferred  stock and related dividends,
and (iii) the Class D Formula Value.

    CLASS B&C PER SHARE PRICE.  The  Class B&C Per Share Price is determined  by
increasing  the Class B&C Formula Value by the portion of the face amount of any
outstanding debentures  convertible into  Class C  Stock, determined  as of  the
prior  fiscal year end. The  resulting amount is then divided  by the sum of (x)
the number of shares of Class B  Stock and Class C Stock issued and  outstanding
as  of the prior fiscal year  end and (y) the number  of shares of Class C Stock
reserved for the conversion of outstanding  debentures into Class C Stock as  of
the prior fiscal year end. This quotient is rounded to the nearest $.05 and then
reduced by the amount of dividends declared on each share of Class D Stock since
the prior fiscal year.

    REPURCHASE DUTIES.  Holders of Class B&C Stock may, at any time on or before
the  fifteenth day  of any calendar  month, offer to  sell part or  all of their
Class B&C Stock to the  Company at the Class B&C  Per Share Price by  delivering
the  certificate(s) representing such stock to the Company, along with a written
notice offering such stock to  the Company. Such offer  must be accepted by  the
Company,  and payment  made for  such stock  (without interest),  within 60 days
after the receipt of such certificate(s) and such written notice by the Company.
Similarly, prior to the time the Class D Stock becomes Publicly Traded,  holders
of Class D Stock may, at any time on or before the fifteenth day of any calendar
month,  offer to sell all or  part of their Class D  Stock to the Company at the
Class D Per Share Price by delivering the certificate(s) representing such stock
to the Company, along  with written notice offering  such stock to the  Company.
Such  offer must  be accepted by  the Company,  and payment made  for such stock
(without interest), within 60 days after receipt of such certificate(s) and such
written notice by the Company. (PKS repurchased  700 shares of Class C Stock  on
July  12, 1995 and July 19, 1995,  in the aggregate, pursuant to such repurchase
obligation.)

    The PKS Board  of Directors  may suspend  the Company's  duty to  repurchase
Class  B&C Stock upon its  determination that the Class  B&C Formula Value to be
determined at the end of  the current fiscal year is  likely to be less than  an
amount  equal to the Class B&C Formula Value  determined at the end of the prior
fiscal year less  the aggregate amount  of dividends declared  on the Class  B&C
Stock  during the current year.  The suspension period shall  not last more than
one year from the date of the PKS Board's declaration of suspension. During  the
suspension period, PKS shall not accept any offer to repurchase Class B&C Stock,
if  such  offer is  made voluntarily  by a  stockholder. During  such suspension
period, the  Company  must continue  to  repurchase  the Class  B&C  Stock  from
stockholders  upon termination  of employment, death,  or in the  event of other
involuntary transfers,  but  (a)  payment  for such  repurchases  shall  not  be
required until after the end of the suspension period, (b) such payment shall be
made  without interest, and (c) the repurchase  price shall be the Class B&C Per
Share Price determined as of (i) the end  of the prior fiscal year, in the  case
of a suspension period that ends before July 1 of the fiscal year (provided that
such computation of the Class B&C Per Share Price shall be reduced by the amount
of  dividends per  share declared on  the Class B&C  Stock since the  end of the
prior fiscal year), or (ii) in the  case of a suspension period that ends  after
June 30 of a fiscal year, the end of the fiscal year during which the suspension
period ends.

    The PKS Certificate of Incorporation contains a similar provision applicable
to  the Class D  Stock, which is triggered  upon a PKS  Board determination of a
probable decline  in  the  Class  D  Formula  Value.  The  suspension  provision
applicable  to the Class  D Stock differs  from the provision  applicable to the
Class B&C Stock  because terminating  employees holding  Class D  Stock are  not
required  to sell such  shares back to the  Company, nor is  the Company under a
duty to repurchase such shares upon such termination. The PKS Board may  suspend
the  repurchase duties as to Class D Stock  only, Class B&C Stock only, or as to
both classes. The PKS Board may  also differentiate between Class B&C Stock  and
Class D Stock as to the duration of the suspension periods.

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<PAGE>
    LIMITATION ON CASH REPURCHASE DUTIES -- CLASS D STOCK.  For various reasons,
the  PKS Board may determine that  it is in the best  interest of the Company to
limit the amount of cash the Company expends in a given year to satisfy its duty
to repurchase Class D Stock.  Accordingly, the PKS Certificate of  Incorporation
contains  provisions under  which the  obligation of  the Company  to repurchase
Class D Stock for cash may be limited  after the Company has in any fiscal  year
purchased  shares of Class D Stock tendered to the Company in an amount equal to
ten percent of the number of shares of  Class D Stock outstanding at the end  of
the prior fiscal year (the "Ten Percent Threshold"). During a given fiscal year,
until  the  Ten  Percent Threshold  is  reached  and subject  to  the suspension
provisions described under "Suspension of  Repurchase Duties," the Company  must
repurchase  all shares of Class  D Stock tendered to  the Company. After the Ten
Percent Threshold  is reached,  the  PKS Board  may  declare that  further  cash
repurchases will be limited. To enforce this limitation, the following rules are
embodied in the Certificate of Incorporation. First, shares of Class D Stock may
be  tendered to the Company for repurchase only during the first 15 days of each
calendar month. Second, if the number of shares tendered exceeds the Ten Percent
Threshold and the PKS Board  declares before the end  of the month that  further
cash  payments are not in  the best interest of the  Company, then the PKS Board
shall also declare that as to the shares already tendered, a certain portion  of
the  shares tendered  by each  stockholder shall  be purchased,  with payment in
cash, and the remainder of such shares  shall be purchased, but with payment  by
promissory  note. In setting the proportion of  shares to be purchased for cash,
the PKS Board may set the proportion  so that the cumulative shares sold  during
the  fiscal year is equal to the Ten  Percent Threshold or the PKS Board may set
some higher proportion.  The promissory  notes shall  have a  maturity date  not
later than 24 months after the date of tender. The PKS Board shall determine the
interest  rate and other terms of  the notes (including the Company's prepayment
rights). The PKS  Board may establish  different terms for  notes applicable  to
later  tender  dates. Each  stockholder who  would otherwise  receive a  note in
payment for the  purchase of certain  shares may instead  elect to withdraw  the
tender  of those shares. The  stockholder may not withdraw  the tender for those
shares which the Company will purchase for cash. In the remaining months of  the
fiscal  year  after  the  date  of  the  PKS  Board's  declaration  invoking the
repurchase limitations,  the  Company  will  continue  to  purchase  all  shares
tendered (subject to the suspension provisions described above), but payment for
such  shares will be in the form of promissory notes, with such terms as the PKS
Board may set, from time to time.  The Company must make full payment within  60
days  of the date of purchase at the applicable Class D Per Share Price, without
interest (except  for  interest accrued  and  payable  under the  terms  of  any
promissory  note issued to a stockholder).  The Company's repurchase duties with
respect to Class D Stock  will terminate when and if  the Class D Stock  becomes
Publicly Traded.

    CONVERSION  OF CLASS  B&C STOCK  INTO CLASS  D STOCK.   Any  stockholder may
convert some or all of  such stockholder's shares of Class  B Stock and Class  C
Stock  into shares of Class D Stock by providing to the Company a written notice
(a  "Conversion  Notice"),  together   with  the  certificate  or   certificates
representing  the  shares  tendered  for  conversion.  The  Company  will accept
Conversion Notices only during the period from and including October 15  through
and including December 15 of each year. Except as provided below, the conversion
shall  be effective on January 1 (the "Conversion Date") following the Company's
receipt of the  Conversion Notice.  As of  the Conversion  Date, the  converting
stockholder shall be entitled to receive certificates representing the number of
shares  of Class D Stock  that bears the same  ratio (the "Conversion Ratio") to
the number of shares surrendered for conversion as the Class B&C Per Share Price
at the Conversion Date bears to the  Class D Conversion Price at such date.  The
"Class  D Conversion Price" means,  (x) in the case  of a Conversion Date before
the Class D Stock becomes Publicly Traded, the Class D Per Share Price as of the
Conversion Date, or (y) in the case of a Conversion Date after the Class D Stock
becomes Publicly Traded, the average trading  price of the Class D Stock  during
the  20  trading days  prior to  the  Conversion Date.  The Company  shall issue
certificates of Class D Stock to converting stockholders promptly after the date
(the "Ratio  Date")  the  PKS  Board  of  Directors  determines  the  applicable
conversion  ratio. The  PKS Board of  Directors shall  determine such conversion
ratio for  the Class  B&C  Per Share  Price and  the  Class D  Conversion  Price
promptly   after  the  Company's  consolidated   financial  statements  for  the

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fiscal year ended immediately before the Conversion Date have been certified  by
the  Company's  independent  public  accountants.  On  the  Conversion  Date,  a
converting holder shall cease to be a  holder of the converted Class B&C  Stock,
and  shall instead become a holder of that  number of shares of Class D Stock as
such holder  would  have  received  had such  conversion  been  based  upon  the
Conversion  Ratio in effect as of the Ratio Date in the prior year. On the Ratio
Date, such number of shares of Class D Stock shall be adjusted automatically  to
the  number of  shares determined on  the basis  of the Conversion  Ratio at the
Conversion Date.  The Company  may,  but is  not  required to,  make  additional
payments to converting holders to reflect dividends that would have been paid on
any additional shares of Class D Stock that the Company expects to issue to such
holder  when  the Conversion  Ratio is  finally determined.  When such  ratio is
finally determined, the Company will pay to  such holder (or the holder will  be
required  to reimburse to the  Company) any amounts necessary  so that the total
payments to the holder (after taking into account any payments to the holder  as
described in the preceding sentence) reflect the amount of dividends such holder
would  have  received  if the  final  Conversion  Ratio had  been  known  at the
Conversion Date.

    As an alternative to the conversion  described above, the Company may  elect
to  repurchase any shares of Class B&C Stock tendered for such conversion at the
Class B&C Per Share Price at the Conversion Date by providing written notice  to
the  tendering stockholder of such election  not later than the Conversion Date.
The stockholder (but only if the stockholder is then an employee of the  Company
or  a subsidiary of which the Company owns a 20% or greater equity interest) may
withdraw the shares  tendered for conversion  at any time  before, or within  10
days  after,  the  Company  provides  written  notice  that  it  has  elected to
repurchase the shares. Partial  payment for such tendered  shares shall be  made
within  60 days after the  Conversion Date, and the  balance shall be paid after
the Company's financial statements are certified.

    Conversion of Class B&C Stock into Class D Stock is not permitted during any
period in  which  the Company  has  suspended its  repurchase  obligations  with
respect to Class B&C Stock or Class D Stock.

    CONVERSION  OF CLASS  D STOCK INTO  CLASS C STOCK.   Until such  time as the
Class D Stock becomes Publicly Traded, in connection with an annual offering  of
Class C Stock to the Company's employees, an offeree, in lieu of purchasing some
or all of the offered shares, may convert, at the ratio described below, some or
all  the offeree's  shares of  Class D Stock  into not  more than  the number of
shares of  Class C  Stock offered.  To  exercise this  right, the  offeree  must
provide  to the Company a written  notice (a "Conversion Notice"), together with
the certificate(s)  representing  the  shares  of Class  D  Stock  tendered  for
conversion. The Company will accept Conversion Notices only within 20 days after
an offer of Class C Stock is made. Upon receipt of such a Conversion Notice, the
Company  shall issue  to such offeree  a certificate representing  the number of
shares of  Class C  Stock that  bears the  same ratio  to the  number of  shares
surrendered  for  conversion as  the Class  D Per  Share Price  at the  date the
Company receives the Conversion Notice bears to the Class B&C Per Share Price at
such date.

    EQUALIZING STOCK DIVIDENDS.  The PKS Board, by a majority vote, may  declare
and  pay stock dividends to holders of Class  C Stock in such amounts as the PKS
Board determines in its discretion to be appropriate in order that the number of
issued and outstanding  shares of Class  C Stock  and the number  of issued  and
outstanding  shares of Class D Stock will be approximately equal. A commensurate
stock dividend shall  be paid on  the Class B  Stock at the  same time that  any
stock dividend is paid on the Class C Stock.

    MANDATORY EXCHANGES.  The PKS Certificate of Incorporation provides that the
PKS  Board has  the option to  require certain  exchanges of Class  B&C Stock or
Class D Stock. However, neither such class  may be exchanged in its entirety  if
the other class has been, or is at that time being, exchanged in its entirety.

    If  assets  and liabilities  of  the Construction  &  Mining Group  are held
directly or  indirectly  by  a  wholly owned  subsidiary  of  the  Company  (the
"Construction  &  Mining Group  Subsidiary"),  the PKS  Board  may, in  its sole
discretion and by a  two-thirds vote of the  directors then in office,  exchange
all  of the  outstanding shares of  Class B&C  Stock for all  of the outstanding
shares of common stock of the

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Construction &  Mining Group  Subsidiary, on  a pro  rata basis,  each of  which
shares  shall, upon  such issuance,  be fully  paid and  non-assessable. The PKS
Board may not require  such an exchange unless  the Construction & Mining  Group
Subsidiary  has  adopted a  certificate  of incorporation  containing provisions
substantially similar to the PKS  Certificate of Incorporation, but  eliminating
provisions applicable to the Class D Stock.

    Similarly,  if the assets and liabilities  of the Diversified Group are held
directly or  indirectly  by  a  wholly owned  subsidiary  of  the  Company  (the
"Diversified  Group Subsidiary"), the PKS Board  may, in its sole discretion and
by a  two-thirds vote  of the  directors then  in office,  exchange all  of  the
outstanding  shares of Class D Stock for all of the outstanding shares of common
stock of the Diversified Group  Subsidiary, on a pro  rata basis, each of  which
shares shall, upon such issuance, be fully paid and non-assessable.

    In  a second form of exchange, unless and until the Class D Stock has become
Publicly Traded, the PKS Board may, by a two-thirds vote, require at any time an
exchange of the outstanding shares of Class D Stock for shares of Class C Stock.
The number of shares  of Class C Stock  to be issued in  such exchange shall  be
determined  by the ratio  of the Class  D Per Share  Price to the  Class B&C Per
Share Price. If  the holder  of Class D  Stock is  not eligible to  own Class  C
Stock,  such holder will be paid cash, without interest, for the shares of Class
D Stock owned  by such holder  within 60 days  after the effective  date of  the
exchange, at the Class D Per Share Price.

    NO  PREEMPTIVE  RIGHTS.   Neither the  holders  of Class  B&C Stock  nor the
holders of Class D Stock have any preemptive or anti-dilution rights.

    POTENTIAL CONFLICTS; FIDUCIARY DUTIES OF THE PKS BOARD.  Under Delaware law,
the management of the business of  the Company and, indirectly, the business  of
its  subsidiaries,  is  under  the  direction of  the  PKS  Board  of Directors.
Accordingly, the PKS  Board has the  right to allocate  and transfer assets  and
liabilities  between  the Groups,  to establish  fees  and allocate  expenses in
connection with  inter-company  transactions between  the  Groups and  with  the
Company itself and to establish and declare dividends paid to the Company by its
direct  subsidiaries.  Such  actions could  affect  the future  earnings  of the
respective Groups, as well as the amounts available for the payment of dividends
on and the repurchase price and  liquidation value of the respective classes  of
stock.  Accordingly, such actions may constitute conflicts between the interests
of the holders of  Class B Stock and  Class C Stock and  the holders of Class  D
Stock.  Depending  on the  magnitude of  such  actions, and  whether or  not any
compensation for such  actions is provided  for by the  PKS Board, such  actions
could result in a substantial reduction in the stockholders' equity attributable
to the Group adversely affected by such actions and a corresponding reduction in
the value of the related class of PKS stock.

    The  PKS Board will not  be constrained by specific  standards in making the
foregoing determinations, but  rather such  actions will  be taken  in the  sole
discretion  of the PKS Board, subject only  to the PKS Board's fiduciary duty to
act with due care and in the best interest of PKS and its stockholders.

    The PKS Board presently contemplates significant transfers of assets between
the Groups  only  under two  circumstances.  First,  the PKS  Board  intends  to
continue  its practice  of transferring  funds from  one Group  to the  other to
reflect the change in the respective ownership interests of the classes of stock
in the event of conversions of stock from one class to another (and in the  case
of  the Exchange  Offer, to reflect  the exchange of  Class B Stock  and Class C
Stock for  Class  D Stock)  so  as to  preclude  the dilution  of  stockholders'
interests  that  would  otherwise  result  from  the  issuance  of  shares  upon
conversion (or exchange). Such adjustments are intended to maintain, rather than
to alter, the respective per share values of the classes of stock as  determined
under the formulas provided for in the PKS Certificate of Incorporation. Second,
in  the  event  that  one  of the  Groups  should  incur  substantial  losses or
liabilities, the PKS  Board might consider  making a transfer  of assets to  the
affected  Group  from the  other Group  if  the PKS  Board determined  that such
transfer was in the overall best interest  of PKS and its stockholders. In  such
event, the PKS Board intends to provide for compensation to the Group making the
transfer. The nature, amount and timing of such compensation would be determined
in  light of the circumstances prevailing at the time. See "Risk Factors -- Risk
Factors Relating

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to the  Exchange  Offer, the  Spin-off  and  PKS Securities  --  Transfers  from
Construction  & Mining Group,"  for a discussion  of a possible interest-bearing
deferral of receipt of funds owed to the Diversified Group by the Construction &
Mining Group in connection with the Exchange Offer.

PKS CONVERTIBLE DEBENTURES

    In the past, the Company has offered a new series of convertible  debentures
for  sale  each year  to  certain employees  who  the PKS  Board  and management
determine have contributed significantly  to the growth  and performance of  the
Company.  Each series of debentures is issued  in fully registered form under an
Indenture dated July 1,  1986, between the Company  and FirsTier Bank N.A.  (the
"Indenture").  The Indenture is qualified pursuant to the Trust Indenture Act of
1939. The Indenture does not limit the aggregate principal amount of  debentures
which may be issued and provides that debentures may be issued from time to time
in  one  or  more  series. The  Company  currently  has  outstanding convertible
debentures of the 1990 through 1994 series in the aggregate principal amount  of
$7,720,000.  A 1995 series of debentures providing for the issuance of a maximum
of $3,000,000 of debentures convertible into  Class C Stock has been  authorized
and  registered with the Commission, although no debentures will be issued until
November 1, 1995. The 1990 and 1991 Series Debentures are convertible into  both
Class  C  Stock  and Class  D  Stock. The  1993  Series Class  D  Debentures are
convertible solely into Class D Stock.  The 1992 and 1994 Series Debentures  and
the  1993 Series Class C  Debentures are convertible solely  into Class C Stock.
Because the  1992  and  1994 Series  Debentures  and  the 1993  Series  Class  C
Debentures  are not convertible into Class D  Stock, they are not being included
in the Exchange Offer.

    The terms of the debentures include those stated in the Indenture and  those
made  a part of the Indenture by reference to the Trust Indenture Act of 1939 as
in effect on the date of the Indenture. The following is a summary of such terms
and the  terms  of the  repurchase  agreement required  to  be executed  by  the
purchaser of a debenture.

    BASIC FEATURES.  Each series of debentures is issued on November 1. Interest
is  payable annually on November 1 of  each year thereafter, and on the maturity
date, which is  ten years  after the  date of  issuance. If  the debentures  are
converted  into  the Company's  common  stock (see  "Conversion  Rights" below),
interest ceases to accrue on June 30  before the fifth year after issuance.  The
debentures  are unsecured  obligations of the  Company, and  the holders thereof
rank equally with other  unsecured creditors of the  Company in bankruptcy.  The
debentures are issued only in registered form, without coupons, in denominations
of  $1,000 or any  integral multiple thereof.  Purchasers are required  to pay a
premium of $25 for each $1,000 in principal amount of debentures purchased.

    CONVERSION RIGHTS.   Holders  may convert  the debentures  into a  specified
class  of the Company's  common stock during  the month of  October in the fifth
year after issuance.  No other  conversion period is  provided for,  and if  the
holder  does not convert such debenture to  common stock during this period, the
conversion right is lost.  The entire principal  amount (no partial  conversions
are  permitted) of a debenture is convertible  into whole shares of common stock
at a conversion price, which is the formula price of the underlying common stock
on the date  of issuance  of the  debentures. A cash  payment by  the holder  is
required  upon conversion  where necessary to  avoid the  issuance of fractional
shares.  The  conversion  right   is  conditioned  upon   the  execution  by   a
debentureholder  of  a  repurchase  agreement  pertaining  to  the  common stock
acquired by means of the conversion.  The conversion rights will be adjusted  to
reflect  stock  splits,  stock  dividends,  stock  reclassifications  or certain
corporate reorganizations between the date of purchase of the debentures and the
date of conversion.

    Each 1990 Series Class C and D Debenture is convertible into pairs of shares
of Class C Stock and Class D Stock at a conversion price of $40.45 per pair, the
formula price of common stock  as of November 1, 1990,  the date of issuance  of
the  1990 Series Class  C and D Debentures.  Each pair consists  of one share of
Class C Stock and  one share of  Class D Stock.  The 1991 Series  Class C and  D
Debentures is also convertible into pairs of shares of Class C Stock and Class D
Stock.  The 1992 and 1994 Series debentures  are convertible only into shares of
Class C Stock. In 1993, there were separate

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series of debentures issued,  one convertible into shares  of Class C Stock  and
one convertible into shares of Class D Stock. The Exchange Offer applies only to
the  1990  Series Class  C  and D  Debentures,  the 1991  Series  Class C  and D
Debentures and the 1993 Series Class D Debentures.

    OWNERSHIP  AND  TRANSFER  RESTRICTIONS.     Sales  of  the  debentures   are
conditioned  upon the execution of a repurchase agreement by the purchaser under
which the purchaser agrees not  to transfer the debentures  except in a sale  to
the  Company.  The  Company  must  purchase  any  debentures  offered  to  it by
debentureholders. The  repurchase agreement  also provides  that the  debentures
must  be sold back to the Company upon  the death or retirement of the purchaser
of the debenture or the termination of the debentureholder's employment with the
Company. In any of the above-described circumstances, the Company will buy  back
the  debentures at a price equal to  the principal amount thereof, together with
accrued interest  from  the last  interest  payment date  to  the date  of  such
purchase  at the stated rate. No payment is  made by the Company with respect to
the original bond premium.  In the event  the Company is  offered some, but  not
all,  of a  debentureholder's debentures, the  Company may purchase  all of such
holder's debentures.

    REDEMPTION.  Upon not less than  ten days' written notice, the Company  may,
at its option, redeem all (but not less than all) of the debentures of any given
series  at the principal amount thereof, together with accrued interest from the
last interest payment date to the date fixed for redemption at the stated  rate.
No payment is made by the Company with respect to the original bond premium. The
Company  may not redeem debentures of any series during the one-month conversion
period applicable to that series.

    MODIFICATION OF INDENTURE.  The Indenture permits modification or  amendment
thereof with the consent of the holders of not less than two-thirds in principal
amount  of  each series  of  debentures, but  no  modification of  the  terms of
payment, conversion rights, or the percentage required for modification will  be
effective against any debentureholder without such holder's consent.

    EVENTS    OF    DEFAULT    AND   WITHHOLDING    OF    NOTICE    THEREOF   TO
DEBENTUREHOLDERS.  The Indenture  provides for the  following events of  default
with  respect to each series of the debentures: (i) failure to pay interest upon
any of the debentures of such series when due, continued for a period of 60 days
and (ii) failure to  pay principal of  the debentures of  such series when  due,
continued for a period of 60 days.

    The  trustee under the Indenture,  within 90 days after  the occurrence of a
default with  respect to  a particular  series  of debentures,  is to  give  the
holders  of  debentures of  such  series notice  of  all defaults  known  to the
trustee, unless cured prior to the giving of such notice, provided that,  except
in  the case of  default in the payment  of principal or interest  on any of the
debentures of such series, the trustee may  withhold such notice if and so  long
as  it in good  faith determines that the  withholding of such  notice is in the
interest of the holders of debentures of such series.

    Upon the happening and during the continuance of a default with respect to a
particular series of debentures,  the trustee may declare  the principal of  all
the  debentures of such series and the interest accrued thereon due and payable,
but if the default is  cured, the holders of a  majority of such debentures  may
waive  all defaults and  rescind such declaration. Subject  to the provisions of
the Indenture relating to  the duties of  the trustee in  case any such  default
shall  have occurred and be continuing, the  trustee will be under no obligation
to exercise any of its  rights or powers at the  request, order or direction  of
any  of  the debentureholders  unless  they shall  have  offered to  the trustee
reasonable security  or indemnity.  A  majority of  the holders  of  outstanding
debentures  of such series  will have the  right to direct  the time, method and
place of conducting any  proceeding for exercising any  remedy available to  the
trustee with respect to the debentures of such series.

    THE  TRUSTEE.  The  Company maintains a demand  deposit account and conducts
routine banking business with the trustee. The Indenture contains limitations on
the right of the trustee, as a creditor of the Company under other  instruments,
to  obtain  payment of  claims  in specified  cases,  or to  realize  on certain
property received in respect of any such claim as security or otherwise.

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    AUTHENTICATION AND  DELIVERY.    The debentures  may  be  authenticated  and
delivered  upon the written  order of the Company  without any further corporate
action.

    SATISFACTION AND DISCHARGE OF  INDENTURE.  The  Indenture may be  discharged
upon  payment or redemption  of all of  the debentures or  upon deposit with the
trustee of funds sufficient therefor.

MFS COMMON STOCK

    The authorized number of shares of MFS Common Stock is 200,000,000.  Holders
of  MFS Common Stock are entitled to one vote for each share held on all matters
submitted to a vote  of stockholders and do  not have cumulative voting  rights.
Holders  of MFS Common Stock are entitled  to receive ratably such dividends, if
any, as may  be declared  by the  MFS Board of  Directors out  of funds  legally
available   therefor,  subject  to  any  preferential  dividend  rights  of  any
outstanding preferred stock issued by MFS. Upon the liquidation, dissolution  or
winding  up of  MFS, the  holders of  MFS Common  Stock are  entitled to receive
ratably the net assets of MFS available after the payment of all debts and other
liabilities and subject to the prior  rights of any outstanding preferred  stock
issued  by MFS.  Holders of MFS  Common Stock have  no preemptive, subscription,
redemption or conversion rights. All the outstanding shares of MFS Common  Stock
are  fully paid  and non-assessable. The  rights, preferences  and privileges of
holders of MFS Common Stock  are subject to, and  may be adversely affected  by,
the  rights of the holders of shares of  any series of preferred stock issued by
MFS. The  MFS Board  of  Directors is  authorized,  subject to  any  limitations
prescribed by law, without stockholder approval, to issue preferred stock in one
or  more series.  Each such  series of preferred  stock shall  have such rights,
preferences, privileges  and  restrictions, including  voting  rights,  dividend
rights,  conversion rights, redemption privileges and liquidation privileges, as
shall be determined by the MFS Board of Directors.

MFS PREFERRED STOCK

    Pursuant to the terms of the Certificate of Designation with respect to  the
MFS  Preferred  Stock  (the "Certificate  of  Designation"), each  share  of MFS
Preferred Stock has the right to five votes on all matters presented to the  MFS
stockholders.  KDG has granted  to MFS an  irrevocable proxy to  vote all of the
shares of MFS Preferred Stock  in proportion to the vote  of the holders of  MFS
Common Stock on all matters other than the election of MFS directors and matters
as  to which holders of  the MFS Preferred Stock vote  as a separate class under
Delaware corporation law. The shares of  MFS Preferred Stock distributed in  the
Spin-off will be subject to this irrevocable proxy. The MFS Preferred Stock will
be  convertible into  shares of  MFS Common  Stock at  any time  after the first
anniversary  of  the  date  of  issuance  at  a  conversion  price  of  $43.125.
Accordingly,  a holder  of MFS  Preferred Stock  would need  to surrender 43.125
shares of MFS Preferred Stock in order to receive one share of MFS Common Stock.
Each share of MFS  Preferred Stock is convertible  into 0.0231884 shares of  MFS
Common  Stock,  which is  determined by  dividing  $1.00 for  each share  of MFS
Preferred Stock (the face value of each share of MFS Preferred Stock) by $43.125
(the conversion price). Dividends on the MFS Preferred Stock will accrue at  the
rate  of 7 3/4%  per annum and will  be payable in cash.  Dividends will be paid
only when, as  and if declared  by the MFS  Board of Directors.  As a result  of
certain  restrictions on MFS's ability to  pay cash dividends that are contained
in MFS's existing debt agreements, it is currently anticipated that, in the near
future, the dividends on the MFS Preferred Stock will not be declared, but  will
continue  to accrue.  Upon conversion,  holders will  be entitled  to receive an
amount, payable at MFS's election in cash  or shares of MFS Common Stock,  equal
to  all accrued but  unpaid dividends in  respect of the  shares surrendered for
conversion. If MFS elects to pay all  unpaid dividends in respect of the  shares
of  MFS Preferred Stock tendered  for conversion in shares  of MFS Common Stock,
the number of shares of MFS Common Stock to be issued in respect of these unpaid
dividends will  be determined  by a  formula where  the total  amount of  unpaid
dividends  to be  paid on each  share of MFS  Preferred Stock is  divided by the
"Fair Market Value"  of a  share of  MFS Common  Stock. "Fair  Market Value"  is
defined,  in general, as (i)  if the MFS Common Stock  is listed on any national
securities exchange or the Nasdaq National Market, the average of the last sales
price of the MFS Common Stock for each day in the 30 trading day period prior to
the date of conversion, (ii)  if the MFS Common Stock  is not so listed, on  the
basis    of   the    average   of   the    mean   between    the   closing   bid

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and asked prices for  the MFS Common Stock  for each day in  the 30 trading  day
period  prior to the date of conversion and (iii) if the MFS Common Stock is not
so listed and if there are no such closing bid and asked prices, on the basis of
the fair market value per  share as determined by the  MFS Board. The shares  of
MFS  Preferred Stock will be  redeemable at the option of  MFS at any time after
the sixth anniversary of the date of issuance at a redemption price of $1.00 per
share, plus accrued and unpaid dividends. The redemption price will be  payable,
at MFS's election, in cash or shares of MFS Common Stock.

    The  MFS  Preferred Stock  cannot be  sold or  transferred by  the recipient
thereof in  the  Spin-off without  the  consent of  MFS  until six  years  after
issuance,  except (i) upon the  death of the holder  to such person's executors,
administrators, testamentary trustees, heirs, legatees or beneficiaries, but not
any subsequent sale or transfer by such, except in accordance with the terms  of
the  Certificate of Designation,  (ii) to a  holder's family members  or a trust
created by the holder solely for the benefit of the holder's spouse, children or
other family members, but not any subsequent sale or transfer by such, except in
accordance with  the terms  of the  Certificate of  Designation; provided,  such
family  member or trust acknowledges  in writing prior to  such sale or transfer
the existence and enforceability of  the irrevocable proxy described above,  and
(iii)  the pledge or  hypothecation by a  holder of the  shares of MFS Preferred
Stock to secure a BONA FIDE loan to such holder from any bank, broker, insurance
company or  other institution  engaged  in lending  activities in  the  ordinary
course  of its business; provided, however, that  such lender may be required to
convert such  MFS Preferred  Stock  into MFS  Common Stock  in  the event  of  a
foreclosure action.

                                 LEGAL MATTERS

    The  legality of  the stock of  PKS being  offered in the  Exchange Offer is
being passed upon for PKS by Sutherland, Asbill & Brennan. In addition,  certain
U.S. tax matters are being passed upon for PKS by Sutherland, Asbill & Brennan.

    The legality of the stock of MFS to be distributed by PKS in the Spin-off is
being passed upon for MFS by Willkie Farr & Gallagher, New York, New York.

                                    EXPERTS

    The  consolidated  financial statements  of  Peter Kiewit  Sons',  Inc., the
financial statements  of  the Construction  &  Mining Group  and  the  financial
statements  of the Diversified Group  as of December 31,  1994, and December 25,
1993, and for each  of the three  years in the period  ended December 31,  1994,
incorporated  in this Prospectus by reference to  the Annual Report on Form 10-K
of Peter Kiewit Sons', Inc., for the year ended December 31, 1994, have been  so
incorporated   in  reliance  on  the  reports  of  Coopers  &  Lybrand,  L.L.P.,
independent accountants,  given on  the authority  of that  firm as  experts  in
accounting and auditing.

    The consolidated financial statements of MFS Communications Company, Inc. as
of  December 31, 1994  and 1993 and  for each of  the three years  in the period
ended December 31,  1994, incorporated in  this Prospectus by  reference to  the
Annual Report on Form 10-K of MFS Communications
Company, Inc. for the year ended December 31, 1994, have been so incorporated in
reliance  on the report  of Coopers &  Lybrand, L.L.P., independent accountants,
given on the authority of that firm as experts in accounting and auditing.

    The consolidated financial statements of  Centex Telemanagement, Inc. as  of
December  31, 1993 and 1992 and for the  years ended December 31, 1993, 1992 and
1991, incorporated in this Prospectus by reference have been so incorporated  in
reliance upon the report of KPMG Peat Marwick, LLP, independent certified public
accountants, on authority of that firm as experts in auditing and accounting.

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    The  balance sheets of  Cylix Communications Corporation  as of December 31,
1993 and 1992, and  the related statements  of operations, stockholder's  equity
and  cash flows for each of the years  in the two-year period ended December 31,
1993 incorporated in this Prospectus by reference to the Current Report on  Form
8-K  of MFS Communications Company, Inc., dated  November 2, 1994, as amended by
Form 8-K/A Amendment No. 1  on December 13, 1994,  have been so incorporated  in
reliance  on the report of Leon Constantin & Co., independent accountants, given
on the authority of that firm as experts in accounting and auditing.

                              CERTAIN DEFINITIONS

    AVAILABLE CLASS D DIVIDEND AMOUNT -- that amount which is the lesser of  (a)
the  amount legally available for dividends on PKS stock and (b) an amount equal
to (i) the Class D Formula Value minus (ii) dividends on Class D Stock  declared
during the current year.

    CLASS  B  STOCK  --  the  Class  B  Construction  &  Mining  Group Nonvoting
Restricted Redeemable Convertible  Exchangeable Common Stock  of PKS, par  value
$0.0625 per share.

    CLASS  B&C FORMULA VALUE -- the formula value, determined on an annual basis
in accordance  with the  Certificate  of Incorporation,  of the  Construction  &
Mining  Group used as a basis for determining  the Class B&C Per Share Price, as
more fully described under "Description of Securities -- PKS Stock" herein.

    CLASS B&C PER SHARE PRICE  -- the per share price  of the Class B Stock  and
Class C Stock, based on the Class B&C Formula Value, which is in accordance with
the  Certificate of Incorporation applicable to PKS's purchases of Class B Stock
and Class C  Stock and to  the determination  of the conversion  ratios used  in
converting Class B Stock and Class C Stock to Class D Stock and Class D Stock to
Class  C Stock, as more fully described  under "Description of Securities -- PKS
Stock" herein.

    CLASS C  STOCK  --  the  Class C  Construction  &  Mining  Group  Restricted
Redeemable  Convertible Exchangeable Common Stock of  PKS, par value $0.0625 per
share.

    CLASS C  AND D  DEBENTURES --  collectively, PKS's  1990 Series  Convertible
Debentures  due October 31, 2000 convertible into  Class C and Class D Stock and
PKS's 1991 Series Convertible Debentures  due October 31, 2001 convertible  into
Class C and Class D Stock.

    CLASS  D DEBENTURES -- PKS's 1993  Series Class D Convertible Debentures due
October 31, 2003 convertible into Class D Stock.

    CLASS D FORMULA VALUE -- the formula value, determined on an annual basis in
accordance with the Certificate of Incorporation, of the Diversified Group  used
as  a basis for determining the Class D Per Share Price, as more fully described
under "Description of Securities -- PKS Stock" herein.

    CLASS D PER SHARE PRICE -- the per  share price of the Class D Stock,  based
on  the Class D  Formula Value, which  is in accordance  with the Certificate of
Incorporation applicable (prior to the time  the Class D Stock becomes  Publicly
Traded)  to PKS's  purchases of Class  D Stock  and to the  determination of the
conversion ratios used in converting Class B Stock and Class C Stock to Class  D
Stock  and  Class  D Stock  to  Class C  Stock,  as more  fully  described under
"Description of Securities -- PKS Stock" herein.

    CLASS D  STOCK --  the Class  D Diversified  Group Convertible  Exchangeable
Common Stock of PKS, par value $0.0625 per share.

    CONSTRUCTION & MINING GROUP -- the Company's construction and certain mining
businesses.

    DIVERSIFIED  GROUP -- the  Company's businesses other  than its construction
and certain of its mining businesses.

                                       83
<PAGE>
    EXCHANGE OFFER  -- the  offer  by PKS  to exchange  (i)  Class D  Stock  for
outstanding  Class B  Stock and Class  C Stock, (ii)  Class C Stock  and Class D
Stock for outstanding  Class C and  D Debentures,  and (iii) Class  D Stock  for
outstanding  Class D Debentures, all upon  the terms and conditions contained in
this Prospectus and the Letter of Transmittal.

    EXCHANGEABLE DEBENTURES  -- collectively,  the Class  D Debentures  and  the
Class C and D Debentures.

    EXCHANGEABLE SECURITIES -- collectively, the Exchangeable Debentures and the
Exchangeable Stock.

    EXCHANGEABLE  STOCK -- collectively, the shares of Class B Stock and Class C
Stock exchangeable for Class D Stock pursuant to the Exchange Offer.

    GROUPS -- collectively, the Construction & Mining Group and the  Diversified
Group.

    KCG  -- Kiewit Construction Group Inc.,  a Delaware corporation and a wholly
owned first-tier subsidiary of PKS.

    KDG -- Kiewit Diversified  Group Inc., a Delaware  corporation and a  wholly
owned first-tier subsidiary of PKS.

    LETTER  OF  TRANSMITTAL --  a  letter sent  to  all holders  of Exchangeable
Securities which sets forth certain terms  and conditions of the Exchange  Offer
and  which must be signed by a holder of Exchangeable Securities and returned to
PKS by the Expiration Date in  order to validly tender Exchangeable  Securities.
Separate  forms of such  letters will be sent  to (i) holders  of Class B Stock,
(ii) holders of Class C Stock and (iii) holders of Exchangeable Debentures.

    MFS -- MFS Communications Company, Inc., a Delaware corporation.

    MFS BOARD OR  MFS BOARD OF  DIRECTORS -- the  board of directors  of MFS  as
constituted from time to time.

    MFS COMMON STOCK -- the common stock of MFS, par value $.01 per share.

    MFS  PREFERRED STOCK -- the Series B convertible preferred stock of MFS, par
value $.01 per share, issuable in connection with the MFS Recapitalization.

    MFS RECAPITALIZATION  -- the  transfer by  KDG of  2,900,000 shares  of  MFS
Common  Stock to MFS in  exchange for 15,000,000 shares  of MFS Preferred Stock,
all as described in this Prospectus.

    OFFERED STOCK --  shares of  Class C  Stock and  Class D  Stock issuable  in
exchange for Exchangeable Securities pursuant to the Exchange Offer.

    PKS OR THE COMPANY -- Peter Kiewit Sons', Inc., a Delaware corporation.

    PKS  BOARD OR  PKS BOARD OF  DIRECTORS -- the  board of directors  of PKS as
constituted from time to time.

    PKS  CERTIFICATE   OF  INCORPORATION   --   the  Restated   Certificate   of
Incorporation of PKS as in effect on the date of this Prospectus.

    PUBLICLY  TRADED -- the  Class D Stock  shall be "Publicly  Traded" from and
after that point in time at which the  Class D Stock is listed or quoted on  any
national  securities  exchange  or Nasdaq  or  the  PKS Board  of  Directors has
determined that the Class D Stock is otherwise publicly traded.

    SPIN-OFF -- the dividend  distribution by PKS  of all of  the shares of  MFS
Common  Stock and MFS Preferred Stock held by PKS to holders of Class D Stock as
of the Spin-off Date, all as described in this Prospectus.

    SPIN-OFF STOCK  --  shares of  MFS  Common  Stock and  MFS  Preferred  Stock
received by holders of Class D Stock in the Spin-off.

                                       84
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS

<TABLE>
<S>                                                                                                                           <C>
Report of Independent Accountants for Peter Kiewit Sons', Inc. and Subsidiaries.............................................   F-3
Peter Kiewit Sons', Inc. and Subsidiaries Pro Forma Consolidated Condensed Statements of Earnings...........................   F-4
Peter Kiewit Sons', Inc. Pro Forma Consolidated Condensed Balance Sheet.....................................................   F-6
Report of Independent Accountants for Kiewit Construction & Mining Group....................................................  F-10
Peter Kiewit Construction and Mining Group Pro Forma Condensed Statements of Earnings.......................................  F-11
Peter Kiewit Construction and Mining Group Pro Forma Condensed Balance Sheet................................................  F-13
Report of Independent Accountants for Kiewit Diversified Group..............................................................  F-17
Peter Kiewit Diversified Group Pro Forma Condensed Statements of Earnings...................................................  F-18
Peter Kiewit Diversified Group Pro Forma Condensed Balance Sheet............................................................  F-20
</TABLE>

                                      F-1
<PAGE>
                        PRO FORMA FINANCIAL INFORMATION

    The  pro forma  financial information of  PKS, Kiewit  Construction & Mining
Group and  Kiewit Diversified  Group, respectively,  has been  prepared to  give
effect,  as further described  below, to the  MFS Recapitalization, the Exchange
Offer and the Spin-off (together,  the "Transactions"). The pro forma  financial
information  assumes, in two separate scenarios, that 3 million (Scenario 1) and
5 million (Scenario  2) shares of  Exchangeable Stock and  all the  Exchangeable
Debentures are exchanged in the Exchange Offer as described herein for 1,249,793
and  2,082,988  shares of  Class D  Stock respectively,  and that  an additional
69,010 shares of Class D Stock and 59,929 shares of Class C Stock are issued  in
exchange  for all outstanding Exchangeable Debentures. Scenario 1 reflects PKS's
estimate of the number of shares of Exchangeable Stock likely to be tendered  in
the Exchange Offer, based upon the tender indications that PKS has received from
members of the PKS Board of Directors and members of the KCG Board of Directors,
and  PKS's estimates of the  likely number of additional  tenders. Scenario 2 is
set forth solely to  illustrate the impact of  the tender of substantially  more
shares  than anticipated by PKS. PKS does not believe that a tender of 5,000,000
shares is likely.

    The pro forma condensed statements of earnings for the six months ended June
30, 1995 and for the year ended December 31, 1994, of PKS, Kiewit Construction &
Mining Group  and Kiewit  Diversified Group  assume that  the Transactions  were
consummated  on  January  1,  1995  and  December  26,  1993,  respectively. The
condensed balance sheets of PKS  and the respective Groups  as of June 30,  1995
assume that the Transactions were consummated as of such date.

    The  pro forma financial  information is not intended  to reflect results of
operations or the financial position of PKS, Kiewit Construction & Mining  Group
or  Kiewit  Diversified  Group,  which  actually  would  have  resulted  had the
Transactions been  effected on  the  dates indicated.  Moreover, the  pro  forma
information  is not intended to be indicative of future results of operations or
financial position  of  PKS,  Kiewit  Construction  &  Mining  Group  or  Kiewit
Diversified Group.

    The pro forma financial information should be read in conjunction with PKS',
Kiewit  Construction & Mining Group's  and Kiewit Diversified Group's historical
financial statements, and the notes thereto, contained in PKS' Annual Report  on
Form 10-K for the year ended December 31, 1994 and selected exhibits thereto and
Quarterly  Report on Form 10-Q for the  quarter ended June 30, 1995 and selected
exhibits thereto, all of which are incorporated herein by reference.

                                      F-2
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS

The Board of Directors and Stockholders
Peter Kiewit Sons', Inc.

    We have  examined  the pro  forma  adjustments reflecting  the  transactions
described  in the accompanying notes and the application of those adjustments to
the historical  amounts in  the accompanying  pro forma  consolidated  condensed
statement  of earnings of Peter Kiewit Sons', Inc. and Subsidiaries for the year
ended December  31, 1994.  The  pro forma  consolidated condensed  statement  of
earnings  is derived  from the historical  financial statements  of Peter Kiewit
Sons', Inc.  and  Subsidiaries,  which  were  audited  by  us,  incorporated  by
reference  herein.  Such  pro  forma  adjustments  are  based  upon management's
assumptions described in  the accompanying  notes. Our examination  was made  in
accordance  with standards  established by  the American  Institute of Certified
Public Accountants and, accordingly, included  such procedures as we  considered
necessary in the circumstances.

    In  addition, we  have reviewed  the related  pro forma  adjustments and the
application of those adjustments to  the historical amounts in the  accompanying
pro  forma consolidated condensed balance sheet  of Peter Kiewit Sons', Inc. and
Subsidiaries as  of June  30,  1995 and  the  pro forma  consolidated  condensed
statement  of earnings for the six months then ended. The pro forma consolidated
condensed  financial  statements  are  derived  from  the  historical  financial
statements  of Peter Kiewit Sons', Inc. and Subsidiaries, which were reviewed by
us, incorporated herein by reference. Such pro forma adjustments are based  upon
management's  assumptions described  in the  accompanying notes.  Our review was
made in  accordance with  standards  established by  the American  Institute  of
Certified Public Accountants.

    The  objective of this pro  forma financial information is  to show what the
significant effects  on  the historical  information  might have  been  had  the
transactions  occurred at an  earlier date. However,  the pro forma consolidated
condensed financial statements are not necessarily indicative of the results  of
operations  or  related  effects  on financial  position  that  would  have been
attained had the above-mentioned transactions actually occurred earlier.

    In our  opinion, management's  assumptions provide  a reasonable  basis  for
presenting  the significant effects directly attributable to the above-mentioned
transactions  described  in  the  accompanying  notes,  the  related  pro  forma
adjustments  give appropriate  effect to  those assumptions,  and the  pro forma
column reflects the proper  application of those  adjustments to the  historical
financial statement amounts in the pro forma consolidated condensed statement of
earnings for the year ended December 31, 1994.

    A  review is  substantially less  in scope than  an audit,  the objective of
which is the expression of an opinion on management's assumptions, the pro forma
adjustments and the  application of  those adjustments  to historical  financial
information.  Accordingly, we do  not express such  an opinion on  the pro forma
adjustments or the application of such adjustments to the pro forma consolidated
condensed balance sheet  as of  June 30, 1995,  and the  pro forma  consolidated
condensed  statement of  earnings for  the six months  then ended.  Based on our
review, however, nothing came  to our attention that  caused us to believe  that
management's  assumptions do not  provide a reasonable  basis for presenting the
significant effects directly  attributable to  the above-mentioned  transactions
described  in the accompanying notes, that  the related pro forma adjustments do
not give appropriate effect to those  assumptions, or that the pro forma  column
does  not reflect the proper application  of those adjustments to the historical
financial statement  amounts in  the pro  forma consolidated  condensed  balance
sheet as of June 30, 1995, and the pro forma consolidated condensed statement of
earnings for the six months then ended.

                                          COOPERS & LYBRAND L.L.P.

Omaha, Nebraska
August 17, 1995

                                      F-3
<PAGE>
                   PETER KIEWIT SONS', INC. AND SUBSIDIARIES
            PRO FORMA CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1994
                       AND SIX MONTHS ENDED JUNE 30, 1995
(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

<TABLE>
<CAPTION>
                                                                                                      (UNAUDITED)
                                                 YEAR ENDED DECEMBER 31, 1994               SIX MONTHS ENDED JUNE 30, 1995
                                           -----------------------------------------   -----------------------------------------
                                                           OTHER                                       OTHER
                                                        ADJUSTMENTS                                 ADJUSTMENTS
                                           HISTORICAL    (NOTE 2)     PKS PRO FORMA    HISTORICAL    (NOTE 2)     PKS PRO FORMA
                                           -----------  -----------   --------------   -----------  -----------   --------------
                                                              (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                        <C>          <C>           <C>              <C>          <C>           <C>
Revenue..................................  $     2,704   $--          $     2,704      $     1,260   $--          $     1,260
Cost of Revenue..........................        2,308   --                (2,308)          (1,079)  --                (1,079)
                                           -----------    ---         --------------   -----------    ---         --------------
                                                   396   --                   396              181   --                   181
General and Administrative Expenses......         (230)  --                  (230)            (108)  --                  (108)
                                           -----------    ---         --------------   -----------    ---         --------------
Operating Income.........................          166   --                   166               73   --                    73
Other Income (Expense):
  Gain on Subsidiary's Stock
   Transactions, net.....................           54    (54)(a)         --                     3     (3)(a)         --
  Investment Income, net.................           43   --                    43               30   --                    30
  Interest Expense, net..................          (38)  --  (b)              (38)             (24)  --  (b)              (24)
  Other, net.............................           15   --                    15              171   --                   171
                                           -----------    ---         --------------   -----------    ---         --------------
                                                    74    (54)                 20              180     (3)                177
Equity in Loss of MFS....................         (102)   102(c)          --                   (85)    85(c)          --
                                           -----------    ---         --------------   -----------    ---         --------------
Earnings before Income Taxes and Minority
 Interest in Net Losses (Income) of
 Subsidiaries............................          138     48                 186              168    (82)                250
Provision for Income Taxes...............          (29)    19(d)              (10)             (89)     1(d)              (88)
Minority Interest in Net Losses (Income)
 of Subsidiaries.........................            1   --                     1               (8)  --                    (8)
                                           -----------    ---         --------------   -----------    ---         --------------
Net Earnings.............................  $       110   $ 67         $       177      $        71   $ 83         $       154
                                           -----------    ---         --------------   -----------    ---         --------------
                                           -----------    ---         --------------   -----------    ---         --------------
Earnings Attributable to
  Class B & C Stock......................  $        77                $        75      $        34                $        33
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
  Class D Stock..........................  $        33                $       102      $        37                $       121
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
Earnings Per Common and Common Equivalent
 Share:
  Class B & C............................  $      4.92                $      5.88      $      2.44                $      2.97
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
  Class D................................  $      1.63                $      4.73      $      1.75                $      5.39
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
Weighted Average Shares Outstanding:
  Class B & C............................   15,697,724                 12,757,653(e)    13,954,135                 11,014,064(e)
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
  Class D................................   20,438,806                 21,636,604(e)    21,261,632                 22,580,435(e)
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
</TABLE>

    The accompanying notes are an integral part of these pro forma financial
                                  statements.

                                      F-4
<PAGE>
                   PETER KIEWIT SONS', INC. AND SUBSIDIARIES
            PRO FORMA CONSOLIDATED CONDENSED STATEMENTS OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1994
                       AND SIX MONTHS ENDED JUNE 30, 1995
(SCENARIO 2 ASSUMING 5 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

<TABLE>
<CAPTION>
                                                                                                      (UNAUDITED)
                                                 YEAR ENDED DECEMBER 31, 1994               SIX MONTHS ENDED JUNE 30, 1995
                                           -----------------------------------------   -----------------------------------------
                                                           OTHER                                       OTHER
                                                        ADJUSTMENTS                                 ADJUSTMENTS
                                           HISTORICAL    (NOTE 2)     PKS PRO FORMA    HISTORICAL    (NOTE 2)     PKS PRO FORMA
                                           -----------  -----------   --------------   -----------  -----------   --------------
                                                              (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                        <C>          <C>           <C>              <C>          <C>           <C>
Revenue..................................  $     2,704   $--          $     2,704      $     1,260   $--          $     1,260
Cost of Revenue..........................        2,308   --                (2,308)          (1,079)  --                (1,079)
                                           -----------    ---         --------------   -----------    ---         --------------
                                                   396   --                   396              181   --                   181
General and Administrative Expenses......         (230)  --                  (230)            (108)  --                  (108)
                                           -----------    ---         --------------   -----------    ---         --------------
Operating Income.........................          166   --                   166               73   --                    73
Other Income (Expenses):
  Gain on Subsidiary's Stock
   Transactions, net.....................           54    (54)(a)         --                     3     (3)(a)         --
  Investment Income, net.................           43   --                    43               30   --                    30
  Interest Expense, net..................          (38)  --  (b)              (38)             (24)  --  (b)              (24)
  Other, net.............................           15   --                    15              171   --                   171
                                           -----------    ---         --------------   -----------    ---         --------------
                                                    74    (54)                 20              180     (3)                177
Equity in Loss of MFS....................         (102)   102(c)          --                   (85)    85(c)          --
                                           -----------    ---         --------------   -----------    ---         --------------
Earnings before Income Taxes and Minority
 Interest in Net Losses (Income) of
 Subsidiaries............................          138     48                 186              168     82                 250
Provision for Income Taxes...............          (29)    19(d)              (10)             (89)     1(d)              (88)
Minority Interest in Net Losses (Income)
 of Subsidiaries.........................            1   --                     1               (8)  --                    (8)
                                           -----------    ---         --------------   -----------    ---         --------------
Net Earnings.............................  $       110   $ 67         $       177      $        71   $ 83         $       154
                                           -----------    ---         --------------   -----------    ---         --------------
                                           -----------    ---         --------------   -----------    ---         --------------
Earnings Attributable to:
  Class B & C Stock......................  $        77                $        74      $        34                $        32
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
  Class D................................  $        33                $       103      $        37                $       122
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
Earnings Per Common and Common Equivalent
 Share:
  Class B & C............................  $      4.92                $      6.84      $      2.44                $      3.54
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
  Class D................................  $      1.63                $      4.63      $      1.75                $      5.23
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
Weighted Average Shares Outstanding:
  Class B & C............................   15,697,724                 10,757,653(e)    13,954,135                  9,014,064(e)
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
  Class D................................   20,438,806                 22,389,129(e)    21,261,632                 23,413,630(e)
                                           -----------                --------------   -----------                --------------
                                           -----------                --------------   -----------                --------------
</TABLE>

    The accompanying notes are an integral part of these pro forma financial
                                  statements.

                                      F-5
<PAGE>
                   PETER KIEWIT SONS', INC. AND SUBSIDIARIES
                 PRO FORMA CONSOLIDATED CONDENSED BALANCE SHEET
                                  (UNAUDITED)
                                 JUNE 30, 1995
(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)
                                     ASSETS

<TABLE>
<CAPTION>
                                                                                               ADJUSTMENTS      PKS
                                                                                  HISTORICAL    (NOTE 3)     PRO FORMA
                                                                                  ----------   -----------   ---------
<S>                                                                               <C>          <C>           <C>
CURRENT ASSETS:
  Cash and cash equivalents.....................................................    $  434       $--          $  434
  Marketable securities.........................................................       528        --             528
  Receivables, net..............................................................       311        --             311
  Costs and earnings in excess of billings on uncompleted contracts.............       130        --             130
  Investment in construction joint ventures.....................................        62        --              62
  Deferred income taxes.........................................................        65        --              65
  Other.........................................................................        55        --              55
                                                                                  ----------   -----------   ---------
      Total Current Assets......................................................     1,585        --           1,585
Property, Plant and Equipment, net..............................................       630        --             630
Investments.....................................................................       450        --             450
Intangible Assets, net..........................................................       401        --             401
Net Assets of MFS...............................................................       447         (447)(a)    --
Other Assets....................................................................        72        --              72
                                                                                  ----------   -----------   ---------
                                                                                    $3,585       $ (447)      $3,138
                                                                                  ----------   -----------   ---------
                                                                                  ----------   -----------   ---------

                                         LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
  Accounts payable..............................................................    $  211       $--          $  211
  Current portion of long-term debt:
    Telecommunications..........................................................         9        --               9
    Other.......................................................................         5           (1)(b)        4
  Accrued costs and billings in excess of revenue on uncompleted contracts......       133        --             133
  Accrued insurance costs.......................................................        74        --              74
  Other.........................................................................       151           12(c)       163
                                                                                  ----------   -----------   ---------
      Total Current Liabilities.................................................       583           11          594
Long-term Debt, less current portion:
    Telecommunications..........................................................       290        --             290
    Other.......................................................................        89           (2)(b)       87
Deferred Income Taxes...........................................................       314          (93)(d)      221
Retirement Benefits.............................................................        48        --              48
Accrued Reclamation Costs.......................................................       103        --             103
Other Liabilities...............................................................       123        --             123
Minority Interest...............................................................       193        --             193
Stockholders' Equity:
  Preferred stock...............................................................     --           --           --
  Common stock..................................................................
    Class B shares outstanding: historical -- 884,400,
     pro forma -- 0.............................................................     --           --           --
    Class C shares outstanding: historical -- 13,944,365,
     pro forma -- 11,888,694....................................................         1        --               1
    Class D shares outstanding: historical -- 21,288,468,
     pro forma -- 22,607,271....................................................         1        --               1
  Additional paid-in capital....................................................       207            3(b)       210
  Foreign currency adjustment...................................................        (4)       --              (4)
  Net unrealized holding gains (losses).........................................         8        --               8
  Retained earnings.............................................................     1,629         (447)(c)
                                                                                                    (12)(c)
                                                                                                     93(d)     1,263
                                                                                  ----------   -----------   ---------
      Total Stockholders' Equity................................................     1,842         (363)       1,479
                                                                                  ----------   -----------   ---------
                                                                                    $3,585       $ (447)      $3,138
                                                                                  ----------   -----------   ---------
                                                                                  ----------   -----------   ---------
</TABLE>

    The accompanying notes are an integral part of this pro forma financial
                                   statement.

                                      F-6
<PAGE>
                   PETER KIEWIT SONS', INC. AND SUBSIDIARIES
                 PRO FORMA CONSOLIDATED CONDENSED BALANCE SHEET
                                  (UNAUDITED)
                                 JUNE 30, 1995
(SCENARIO 2 ASSUMING 5 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)
                                     ASSETS

<TABLE>
<CAPTION>
                                                                                               ADJUSTMENTS      PKS
                                                                                  HISTORICAL    (NOTE 3)     PRO FORMA
                                                                                  ----------   -----------   ---------
                                                                                         (DOLLARS IN MILLIONS)
<S>                                                                               <C>          <C>           <C>
Current Assets
  Cash and cash equivalents.....................................................    $  434       $--          $  434
  Marketable securities.........................................................       528        --             528
  Receivables, net..............................................................       311        --             311
  Cost and earnings in excess of billings and uncompleted contracts.............       130        --             130
  Investment in construction joint ventures.....................................        62        --              62
  Deferred income taxes.........................................................        65        --              65
  Other.........................................................................        55        --              55
                                                                                  ----------   -----------   ---------
Total Current Assets............................................................     1,585        --           1,585
Property, Plant and Equipment, net..............................................       630        --             630
Investments.....................................................................       450        --             450
Intangible Assets, net..........................................................       401        --             401
Net Assets of MFS...............................................................       447         (447)(a)    --
Other Assets....................................................................        72        --              72
                                                                                  ----------   -----------   ---------
                                                                                    $3,585       $ (497)      $3,138
                                                                                  ----------   -----------   ---------
                                                                                  ----------   -----------   ---------
                                         LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
  Accounts payable..............................................................    $  211       $--          $  211
  Current portion of long-term debt:
    Telecommunications..........................................................         9        --               9
    Other.......................................................................         5           (1)(b)        4
  Accrued costs and billings in excess of revenue on uncompleted contracts......       133        --             133
  Accrued insurance costs.......................................................        74        --              74
  Other.........................................................................       151           12(c)       163
                                                                                  ----------   -----------   ---------
Total Current Liabilities.......................................................       583           11          594
Long-term Debt, less current portion:
  Telecommunications............................................................       290        --             290
  Other.........................................................................        89           (2)(b)       87
Deferred Income Taxes...........................................................       314          (93)(d)      221
Retirement Benefits.............................................................        48        --              48
Accrued Reclamation Costs.......................................................       103        --             103
Other Liabilities...............................................................       123        --             123
Minority Interest...............................................................       193        --             193
Stockholders' Equity:
  Preferred stock...............................................................     --           --           --
  Common Stock
    Class B shares outstanding: historical -- 884,400,
     pro forma -- 0.............................................................     --           --           --
    Class C shares outstanding: historical -- 13,944,365,
     pro forma -- 9,888,694.....................................................         1        --               1
    Class D shares outstanding: historical -- 21,288,468,
     pro forma -- 23,440,466....................................................         1        --               1
  Additional paid-in capital....................................................       207            3(b)       210
  Foreign currency adjustment...................................................        (4)       --              (4)
  Net unrealized holding gains (losses).........................................         8        --               8
  Retained earnings.............................................................     1,629         (447)(a)
                                                                                                    (12)(c)
                                                                                                     93(d)     1,263
                                                                                  ----------   -----------   ---------
Total Stockholders' Equity......................................................     1,842         (363)       1,479
                                                                                  ----------   -----------   ---------
                                                                                    $3,585       $ (447)      $3,138
                                                                                  ----------   -----------   ---------
                                                                                  ----------   -----------   ---------
</TABLE>

    The accompanying notes are an integral part of this pro forma financial
                                   statement.

                                      F-7
<PAGE>
                   PETER KIEWIT SONS', INC. AND SUBSIDIARIES
         NOTES TO PRO FORMA CONSOLIDATED CONDENSED FINANCIAL STATEMENTS

1.  BASIS OF REPORTING
    The  accompanying pro  forma consolidated condensed  financial statements of
PKS are presented  based upon the  historical consolidated financial  statements
and  the notes thereto of PKS, as  adjusted to remove the earnings statement and
balance sheet accounts of MFS  and to give effect  to certain other elements  of
the  MFS Recapitalization, the  Exchange Offer and  the Spin-off, (together, the
"Transactions"). The pro forma information  assumes, in two separate  scenarios,
that  3  million  (Scenario  1)  and  5  million  (Scenario  2),  shares  of the
Exchangeable Stock  and all  the Exchangeable  Debentures are  exchanged in  the
Exchange   Offer.  Such  pro  forma  financial  statements  should  be  read  in
conjunction with the separate  historical consolidated financial statements  and
the  notes  thereto of  PKS, incorporated  herein by  reference. Such  pro forma
financial statements are  not necessarily  indicative of the  future results  of
operations or financial position.

    The  PKS Board of Directors preliminarily approved a plan to make a tax-free
distribution of its entire ownership interest in MFS to the Class D Stockholders
at a special meeting  on June 9,  1995. The operating results  of MFS have  been
classified  as a  single line item  on the consolidated  statements of earnings.
PKS' proportionate share  of the  net assets  of MFS at  June 30,  1995 of  $447
million have been reported separately on the consolidated balance sheet.

    Completion of the Transactions has been assumed to be as of June 30, 1995 in
the  pro forma consolidated condensed balance sheet  and as of December 26, 1993
and January  1, 1995,  in the  pro forma  consolidated condensed  statements  of
earnings  for the year ended December 31, 1994 and the six months ended June 30,
1995, respectively.

    The significant accounting policies followed by PKS, described in the  notes
to  its  historical  consolidated financial  statements  incorporated  herein by
reference, have been used in  preparing the accompanying pro forma  consolidated
condensed financial statements.

2.  STATEMENTS OF EARNINGS PRO FORMA ADJUSTMENTS
    As  described in Note 1, the  historical consolidated statements of earnings
for PKS have been adjusted to remove the earnings statement accounts of MFS  and
to  give  effect  to  certain  other elements  of  the  Transactions.  The other
adjustments made in preparation of the PKS Pro Forma Statements of Earnings  are
described below:

    (a) Adjustment   made  to  reverse  the   gain  recognized  from  MFS  stock
        transactions that would not have been recorded if the Transactions  were
        completed at the beginning of the periods.

    (b) No  adjustment has been made for the decrease in interest expense due to
        the assumed exchange of the Exchangeable Debentures as the adjustment is
        less than $1 million.

    (c) Adjustment made to remove the earnings statement account of MFS.

    (d) Adjustment made to reflect the tax effect of the above adjustments.

    (e) Scenario 1 assumes 3,000,000 shares of Exchangeable Stock are  exchanged
        for  Class  D Stock  and  Scenario 2  assumes  that 5,000,000  shares of
        Exchangeable Stock are exchanged for Class D Stock at the prior year-end
        conversion ratio, adjusted  for dividends declared  during the  periods.
        The  pro forma weighted average shares also include an additional 59,929
        Class C shares and 69,010 Class D shares attributable to the exchange of
        the Exchangeable Debentures.

                                      F-8
<PAGE>
                   PETER KIEWIT SONS', INC. AND SUBSIDIARIES
         NOTES TO PRO FORMA CONSOLIDATED CONDENSED FINANCIAL STATEMENTS

3.  BALANCE SHEET PRO FORMA ADJUSTMENTS
    As described in Note 1, the historical consolidated balance sheet of PKS has
been adjusted to remove the balance sheet  account of MFS and to give effect  to
certain  other  elements  of the  Transactions.  The other  adjustments  made in
preparation of  the  PKS Pro  Forma  Consolidated Condensed  Balance  Sheet  are
described below:

    (a) Adjustment to remove PKS' investment in MFS.

    (b) Adjustment  made to reflect the  exchange of the Exchangeable Debentures
        for Class C and Class D Stock.

    (c) Adjustment made to  record the  accrual of  certain estimated  corporate
        United  States  Federal  income  taxes  attributable  to  the  corporate
        built-in  gain  on  the  stock  of  MFS  being  distributed  to  certain
        non-United States Class D stockholders.

    (d) Adjustment  made to reverse certain  deferred tax liabilities recognized
        on gains from MFS stock transactions that are no longer payable.

4.  EARNINGS PER SHARE
    Primary earnings per  share of  common stock  have been  computed using  the
weighted  average number of shares outstanding during each period. Fully diluted
earnings per  share have  not been  presented because  they are  not  materially
different from primary earnings per share.

                                      F-9
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS

The Board of Directors and Stockholders
Peter Kiewit Sons, Inc.

    We  have  examined the  pro  forma adjustments  reflecting  the transactions
described in the accompanying notes and the application of those adjustments  to
the  historical amounts  in the  accompanying pro  forma condensed  statement of
earnings of Kiewit Construction & Mining Group, a business group of Peter Kiewit
Sons', Inc.,  for the  year ended  December 31,  1994. The  pro forma  condensed
statement  of earnings  is derived from  the historical  financial statements of
Kiewit Construction  & Mining  Group,  which were  audited by  us,  incorporated
herein  by reference.  Such pro  forma adjustments  are based  upon management's
assumptions described in  the accompanying  notes. Our examination  was made  in
accordance  with standards  established by  the American  Institute of Certified
Public Accountants and, accordingly, included  such procedures as we  considered
necessary in the circumstances.

    In  addition, we  have reviewed  the related  pro forma  adjustments and the
application of those adjustments to  the historical amounts in the  accompanying
pro  forma condensed balance sheet  of Kiewit Construction &  Mining Group as of
June 30, 1995  and the pro  forma condensed  statement of earnings  for the  six
months then ended. The pro forma condensed financial statements are derived from
the historical financial statements of Kiewit Construction & Mining Group, which
were   reviewed  by  us,  incorporated  herein  by  reference.  Such  pro  forma
adjustments  are   based  upon   management's  assumptions   described  in   the
accompanying notes. Our review was made in accordance with standards established
by the American Institute of Certified Public Accountants.

    The  objective of this pro  forma financial information is  to show what the
significant effects  on  the historical  information  might have  been  had  the
transactions  occurred  at an  earlier date.  However,  the pro  forma condensed
financial statements are not necessarily indicative of the results of operations
or related effects on financial position  that would have been attained had  the
above-mentioned transactions actually occurred earlier.

    In  our  opinion, management's  assumptions provide  a reasonable  basis for
presenting the significant effects directly attributable to the  above-mentioned
transactions  described  in  the  accompanying  notes,  the  related  pro  forma
adjustments give  appropriate effect  to those  assumptions, and  the pro  forma
column  reflects the proper  application of those  adjustments to the historical
financial statement amounts in the pro forma condensed statement of earnings for
the year ended December 31, 1994.

    A review is  substantially less  in scope than  an audit,  the objective  of
which is the expression of an opinion on management's assumptions, the pro forma
adjustments  and the  application of  those adjustments  to historical financial
information. Accordingly, we  do not express  such an opinion  on the pro  forma
adjustments  or the application  of such adjustments to  the pro forma condensed
balance sheet as  of June 30,  1995, and  the pro forma  condensed statement  of
earnings  for the six months  then ended. Based on  our review, however, nothing
came to our attention that caused us to believe that management's assumptions do
not provide a reasonable basis  for presenting the significant effects  directly
attributable  to the above-mentioned transactions  described in the accompanying
notes, that the related pro forma adjustments do not give appropriate effect  to
those  assumptions, or  that the  pro forma column  does not  reflect the proper
application of those adjustments to  the historical financial statement  amounts
in  the pro forma condensed balance sheet as of June 30, 1995, and the pro forma
condensed statement of earnings for the six months then ended.

                                          COOPERS & LYBRAND L.L.P.

Omaha, Nebraska
August 17, 1995

                                      F-10
<PAGE>
                       KIEWIT CONSTRUCTION & MINING GROUP

                   PRO FORMA CONDENSED STATEMENTS OF EARNINGS

                          YEAR ENDED DECEMBER 31, 1994
                       AND SIX MONTHS ENDED JUNE 30, 1995

(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

<TABLE>
<CAPTION>
                                                                                                 (UNAUDITED)
                                             YEAR ENDED DECEMBER 31, 1994              SIX MONTHS ENDED JUNE 30, 1995
                                      ------------------------------------------   ---------------------------------------
                                                  ADJUSTMENTS                                   ADJUSTMENTS
                                      HISTORICAL   (NOTE 2)        PRO FORMA       HISTORICAL    (NOTE 2)      PRO FORMA
                                      ----------  -----------   ----------------   -----------  -----------   ------------
                                                        (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                   <C>         <C>           <C>                <C>          <C>           <C>
Revenue.............................  $    2,175    $--         $          2,175   $       988    $--         $      988
Cost of Revenue.....................      (1,995)    --                   (1,995)         (925)    --               (925)
                                      ----------  -----------   ----------------   -----------  -----------   ------------
                                             180     --                      180            63     --                 63
General and Administrative
 Expenses...........................        (121)    --                     (121)          (61)    --                (61)
                                      ----------  -----------   ----------------   -----------  -----------   ------------
Operating Earnings..................          59     --                       59             2     --                  2
Other Income (Expense):
  Investment Income, net............          13        (3)(a)                10             6        (2)(a)           4
  Interest Expense..................          (2)       --(b)                )(2            (1)       --(b)           (1)
  Other, net........................          46     --                       46            46     --                 46
                                      ----------  -----------   ----------------   -----------  -----------   ------------
                                              57        (3)                   54            51        (2)             49
                                      ----------  -----------   ----------------   -----------  -----------   ------------
Earnings before Income Taxes........         116        (3)                  113            53        (2)             51
(Provision) Benefit for Income
 Taxes..............................         (39)        1(c)                (38)          (19)        1(c)          (18)
                                      ----------  -----------   ----------------   -----------  -----------   ------------
Net Earnings........................  $       77    $   (2)     $             75   $        34    $   (1)     $       33
                                      ----------  -----------   ----------------   -----------  -----------   ------------
                                      ----------  -----------   ----------------   -----------  -----------   ------------
Net Earnings Per Common and Common
 Equivalent Share...................  $     4.92                $           5.88   $      2.44                $     2.97
                                      ----------                ----------------   -----------                ------------
                                      ----------                ----------------   -----------                ------------
Weighted Average Shares
 Outstanding........................  15,697,724                      12,757,653(d)  13,954,135               11,014,064(d)
                                      ----------                ----------------   -----------                ------------
                                      ----------                ----------------   -----------                ------------
</TABLE>

    The accompanying notes are an integral part of these pro forma financial
                                  statements.

                                      F-11
<PAGE>
                       KIEWIT CONSTRUCTION & MINING GROUP
                   PRO FORMA CONDENSED STATEMENTS OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1994
                       AND SIX MONTHS ENDED JUNE 30, 1995
(SCENARIO 2 ASSUMING 5 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

<TABLE>
<CAPTION>
                                                                                                       (UNAUDITED)
                                                   YEAR ENDED DECEMBER 31, 1994              SIX MONTHS ENDED JUNE 30, 1995
                                            ------------------------------------------   ---------------------------------------
                                                        ADJUSTMENTS                                   ADJUSTMENTS
                                            HISTORICAL   (NOTE 2)        PRO FORMA       HISTORICAL    (NOTE 2)      PRO FORMA
                                            ----------  -----------   ----------------   -----------  -----------   ------------
                                                              (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                         <C>         <C>           <C>                <C>          <C>           <C>
Revenue...................................  $    2,175     $--        $          2,175   $       988    $--         $      988
Cost of Revenue...........................      (1,995)    --                   (1,995)         (925)    --               (925)
                                            ----------  -----------   ----------------   -----------  -----------   ------------
                                                   180     --                      180            63     --                 63
General and Administrative Expenses.......        (121)    --                     (121)          (61)    --                (61)
                                            ----------  -----------   ----------------   -----------  -----------   ------------
Operating Earnings........................          59     --                       59             2     --                  2
Other Income (Expense):
  Investment Income, net..................          13        (5)(a)                 8             6        (3)(a)           3
  Interest Expense........................          (2)       --(b)                )(2            (1)       --(b)           (1)
  Other, net..............................          46     --                       46            46     --                 46
                                            ----------  -----------   ----------------   -----------  -----------   ------------
                                                    57        (5)                   52            51        (3)             48
                                            ----------  -----------   ----------------   -----------  -----------   ------------
Earnings before Income Taxes..............         116        (5)                  111            53        (3)             50
(Provision) Benefit for Income Taxes......         (39)        2(c)                (37)          (19)        1(c)          (18)
                                            ----------  -----------   ----------------   -----------  -----------   ------------
Net Earnings..............................  $       77     $  (3)     $             74   $        34    $   (2)     $       32
                                            ----------  -----------   ----------------   -----------  -----------   ------------
                                            ----------  -----------   ----------------   -----------  -----------   ------------
Net Earnings Per Common and Common
 Equivalent Share.........................  $     4.92                $           6.84   $      2.44                $     3.54
                                            ----------                ----------------   -----------                ------------
                                            ----------                ----------------   -----------                ------------
Weighted Average Shares Outstanding.......  15,697,724                      10,757,653(d)  13,954,135                9,014,064(d)
                                            ----------                ----------------   -----------                ------------
                                            ----------                ----------------   -----------                ------------
</TABLE>

    The accompanying notes are an integral part of these pro forma financial
                                  statements.

                                      F-12
<PAGE>
                       KIEWIT CONSTRUCTION & MINING GROUP
                       PRO FORMA CONDENSED BALANCE SHEET
                                  (UNAUDITED)
                                 JUNE 30, 1995
(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

<TABLE>
<CAPTION>
                                                                                          ADJUSTMENTS
                                                                             HISTORICAL    (NOTE 3)     PRO FORMA
                                                                             ----------   -----------   ---------
                                                                                    (DOLLARS IN MILLIONS)
<S>                                                                          <C>          <C>           <C>
                                                     ASSETS
Current Assets:
  Cash and cash equivalents................................................     $ 84         $(75)(a)     $  9
  Marketable securities....................................................      100        --             100
  Receivables, net.........................................................      244        --             244
  Costs and earnings in excess of billings on uncompleted contracts........      130        --             130
  Investment in construction joint ventures................................       62        --              62
  Deferred income taxes....................................................       54        --              54
  Other....................................................................       21        --              21
                                                                               -----        -----       ---------
    Total Current Assets...................................................      695          (75)         620
Property, Plant and Equipment, net.........................................      161        --             161
Other Assets...............................................................      111        --             111
                                                                               -----        -----       ---------
                                                                                $967         $(75)        $892
                                                                               -----        -----       ---------
                                                                               -----        -----       ---------

                                      LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
  Accounts payable.........................................................     $169        -$-           $169
  Current portion of long-term debt........................................        2        --               2
  Accrued construction costs and billings in excess of revenue on
   uncompleted contracts...................................................      119        --             119
  Accrued insurance costs..................................................       74        --              74
  Other....................................................................       41        --              41
                                                                               -----        -----       ---------
    Total Current Liabilities..............................................      405        --             405
Long-term Debt, less current portion.......................................        7           (1)(b)        6
Deferred Income Taxes......................................................        5        --               5
Other Liabilities..........................................................       47        --              47
Stockholders Equity:
  Common equity............................................................      508          (75)(a)
                                                                                                1(b)       434
  Foreign currency adjustment..............................................       (5)       --              (5)
  Unrealized holding gain (loss)...........................................    --           --            --
                                                                               -----        -----       ---------
    Total Stockholders' Equity.............................................      503          (74)         429
                                                                               -----        -----       ---------
                                                                                $967         $(75)        $892
                                                                               -----        -----       ---------
                                                                               -----        -----       ---------
</TABLE>

    The accompanying notes are an integral part of this pro forma financial
                                   statement.

                                      F-13
<PAGE>
                       KIEWIT CONSTRUCTION & MINING GROUP
                       PRO FORMA CONDENSED BALANCE SHEET
                                  (UNAUDITED)
                                 JUNE 30, 1995
                    (SCENARIO 2 ASSUMING 5 MILLION SHARES OF
                EXCHANGEABLE STOCK EXCHANGED FOR CLASS D STOCK)

<TABLE>
<CAPTION>
                                                                                          ADJUSTMENTS
                                                                             HISTORICAL    (NOTE 3)     PRO FORMA
                                                                             ----------   -----------   ---------
                                                                                    (DOLLARS IN MILLIONS)

<S>                                                                          <C>          <C>           <C>
                                                     ASSETS
Current Assets:
  Cash and cash equivalents................................................     $ 84       $ (84)(a)      $--
  Marketable securities....................................................      100         (42)(a)        58
  Receivables, net.........................................................      244        --             244
  Costs and earnings in excess of billings on uncompleted contracts........      130        --             130
  Investment in construction joint ventures................................       62        --              62
  Deferred Income Taxes....................................................       54        --              54
  Other....................................................................       21        --              21
                                                                               -----      -----------   ---------
    Total Current Assets...................................................      695        (126)          569
Property, Plant and Equipment, net.........................................      161        --             161
Other Assets...............................................................      111        --             111
                                                                               -----      -----------   ---------
                                                                                $967       $(126)         $841
                                                                               -----      -----------   ---------
                                                                               -----      -----------   ---------

                                      LIABILITIES AND STOCKHOLDERS' EQUITY

Current Liabilities:
  Accounts payable.........................................................     $169       $--            $169
  Current portion of long-term debt........................................        2        --               2
  Accrued construction costs and billings in excess of revenue on
   uncompleted contracts...................................................      119        --             119
  Accrued insurance costs..................................................       74        --              74
  Other....................................................................       41        --              41
                                                                               -----      -----------   ---------
    Total Current Liabilities..............................................      405        --             405
Long-term Debt, less current portion.......................................        7          (1)(b)         6
Deferred Income Taxes......................................................        5        --               5
Other Liabilities..........................................................       47        --              47
Stockholders' Equity:
  Common equity............................................................      508        (126)(a)
                                                                                               1(b)        383
  Foreign currency adjustment..............................................       (5)       --              (5)
  Unrealized holding gain (loss)...........................................    --           --            --
                                                                               -----      -----------   ---------
    Total Stockholders' Equity.............................................      503        (125)          378
                                                                               -----      -----------   ---------
                                                                                $967       $(126)         $841
                                                                               -----      -----------   ---------
                                                                               -----      -----------   ---------
</TABLE>

    The accompanying notes are an integral part of this pro forma financial
                                   statement.

                                      F-14
<PAGE>
                       KIEWIT CONSTRUCTION & MINING GROUP
               NOTES TO PRO FORMA CONDENSED FINANCIAL STATEMENTS

1.  BASIS OF REPORTING
    The  accompanying  pro forma  condensed financial  statements of  the Kiewit
Construction  &  Mining  Group  ("the  Group")  are  presented  based  upon  the
historical  financial statements and the notes thereto of the Group, as adjusted
to give effect  to certain elements  of the MFS  Recapitalization, the  Exchange
Offer and the Spin-off, (together the "Transactions"). The pro forma information
assumes,  in two separate scenarios,  that 3 million (Scenario  1) and 5 million
(Scenario 2),  shares  of  the  Exchangeable  Stock  and  all  the  Exchangeable
Debentures  are  exchanged  in  the Exchange  Offer.  Such  pro  forma financial
statements should be read in conjunction with the separate historical  financial
statements and the notes thereto of the Group, incorporated herein by reference.
Such pro forma financial statements are not necessarily indicative of the future
results of operations or financial position.

    Completion of the Transactions has been assumed to be as of June 30, 1995 in
the pro forma condensed balance sheet and as of December 26, 1993 and January 1,
1995,  in the  pro forma  condensed statements  of earnings  for the  year ended
December 31, 1994 and the six months ended June 30, 1995, respectively.

    The significant accounting policies followed by the Group, described in  the
notes  to its historical financial  statements incorporated herein by reference,
have been  used in  preparing  the accompanying  pro forma  condensed  financial
statements.

    Although  the pro forma  financial statements of  PKS' Construction & Mining
Group and  Diversified  Group  separately report  the  assets,  liabilities  and
stockholders'  equity of PKS attributed to each  such group, legal title to such
assets and responsibility  for such  liabilities will  not be  affected by  such
attribution.  Holders of  Class B  Stock, Class  C Stock  and Class  D Stock are
stockholders of  PKS.  Accordingly, the  PKS  pro forma  consolidated  financial
statements  and related notes should be read in conjunction with these pro forma
financial statements.

2.  STATEMENTS OF EARNINGS PRO FORMA ADJUSTMENTS
    As described in Note 1, the historical statements of earnings for the  Group
have  been adjusted to give effect to  certain elements of the Transactions. The
other adjustments made  in preparation of  the Group's Pro  Forma Statements  of
Earnings are described below:

    (a) Adjustment made to reflect the reduction in interest income from the use
        of  cash paid  to Kiewit  Diversified Group  upon exchange  of 3 million
        shares of  Exchangeable Stock  to Class  D  Stock in  Scenario 1  and  5
        million shares of Exchangeable Stock to Class D Stock in Scenario 2. The
        interest  rate  used  to  calculate  the  reduction  in  interest income
        approximates the average rate earned by the Group during the periods.

    (b) No adjustment has been made for the decrease in interest expense due  to
        the assumed exchange of the Exchangeable Debentures as the adjustment is
        less than $1 million.

    (c) Adjustment made to reflect tax effect of the above adjustments.

    (d) Scenario  1 assumes 3,000,000 shares of Exchangeable Stock are exchanged
        for  Class  D  Stock  and   Scenario  2  assumes  5,000,000  shares   of
        Exchangeable Stock are exchanged for Class D Stock at the prior year end
        conversion  ratio, adjusted  for dividends declared  during the periods.
        The pro forma weighted average shares also include an additional  59,929
        Class  C  shares  attributable  to  the  exchange  of  the  Exchangeable
        Debentures.

                                      F-15
<PAGE>
                       KIEWIT CONSTRUCTION & MINING GROUP
         NOTES TO PRO FORMA CONDENSED FINANCIAL STATEMENTS (CONTINUED)

3.  BALANCE SHEET PRO FORMA ADJUSTMENTS
    As described in Note 1, the historical  balance sheet of the Group has  been
adjusted  to  give effect  to certain  elements of  the Transactions.  The other
adjustments made in preparation of the Group's Pro Forma Condensed Balance Sheet
are described below:

    (a) Adjustment made to reflect  the decrease in  cash, cash equivalents  and
        marketable  securities as the result of the exchange of 3 million shares
        (Scenario 1) and 5 million shares (Scenario 2) of Exchangeable Stock  at
        the  prior year  end stock  prices and  conversion ratios,  adjusted for
        dividends declared during the periods.

    (b) Adjustment made to reflect the  exchange of the Exchangeable  Debentures
        for Class C Stock.

4.  EARNINGS PER SHARE
    Primary  earnings per  share of  common stock  have been  computed using the
weighted average number of shares outstanding during each period. Fully  diluted
earnings  per  share have  not been  presented because  they are  not materially
different from primary earnings per share.

                                      F-16
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS

The Board of Directors and Stockholders
Peter Kiewit Sons', Inc.

    We have  examined  the pro  forma  adjustments reflecting  the  transactions
described  in the accompanying notes and the application of those adjustments to
the historical  amounts in  the accompanying  pro forma  condensed statement  of
earnings  of Kiewit Diversified  Group, a business group  of Peter Kiewit Sons',
Inc., for the year ended December 31, 1994. The pro forma condensed statement of
earnings  is  derived  from  the  historical  financial  statements  of   Kiewit
Diversified  Group, which were audited by  us, incorporated herein by reference.
Such pro forma adjustments are based upon management's assumptions described  in
the  accompanying notes. Our  examination was made  in accordance with standards
established by  the  American Institute  of  Certified Public  Accountants  and,
accordingly,  included  such  procedures  as  we  considered  necessary  in  the
circumstances.

    In addition, we  have reviewed  the related  pro forma  adjustments and  the
application  of those adjustments to the  historical amounts in the accompanying
pro forma condensed  balance sheet of  Kiewit Diversified Group  as of June  30,
1995  and the pro forma condensed statement  of earnings for the six months then
ended. The  pro  forma  condensed  financial statements  are  derived  from  the
historical financial statements of Kiewit Diversified Group, which were reviewed
by  us, incorporated herein  by reference. Such pro  forma adjustments are based
upon management's assumptions  described in the  accompanying notes. Our  review
was  made in accordance with standards  established by the American Institute of
Certified Public Accountants.

    The objective of this  pro forma financial information  is to show what  the
significant  effects  on  the historical  information  might have  been  had the
transactions occurred  at an  earlier  date. However,  the pro  forma  condensed
financial statements are not necessarily indicative of the results of operations
or  related effects on financial position that  would have been attained had the
above-mentioned transactions actually occurred earlier.

    In our  opinion, management's  assumptions provide  a reasonable  basis  for
presenting  the significant effects directly attributable to the above-mentioned
transactions  described  in  the  accompanying  notes,  the  related  pro  forma
adjustments  give appropriate  effect to  those assumptions,  and the  pro forma
column reflects the proper  application of those  adjustments to the  historical
financial statement amounts in the pro forma condensed statement of earnings for
the year ended December 31, 1994.

    A  review is  substantially less  in scope than  an audit,  the objective of
which is the expression of an opinion on management's assumptions, the pro forma
adjustments and the  application of  those adjustments  to historical  financial
information.  Accordingly, we do  not express such  an opinion on  the pro forma
adjustments or the application  of such adjustments to  the pro forma  condensed
balance  sheet as  of June 30,  1995, and  the pro forma  condensed statement of
earnings for the six  months then ended. Based  on our review, however,  nothing
came to our attention that caused us to believe that management's assumptions do
not  provide a reasonable basis for  presenting the significant effects directly
attributable to the above-mentioned  transactions described in the  accompanying
notes,  that the related pro forma adjustments do not give appropriate effect to
those assumptions, or  that the  pro forma column  does not  reflect the  proper
application  of those adjustments to  the historical financial statement amounts
in the pro forma condensed balance sheet as of June 30, 1995, and the pro  forma
condensed statement of earnings for the six months then ended.

                                          COOPERS & LYBRAND L.L.P.

Omaha, Nebraska
August 17, 1995

                                      F-17
<PAGE>
                            KIEWIT DIVERSIFIED GROUP
                   PRO FORMA CONDENSED STATEMENTS OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1994
                       AND SIX MONTHS ENDED JUNE 30, 1995
(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

<TABLE>
<CAPTION>
                                                                                                       (UNAUDITED)
                                                   YEAR ENDED DECEMBER 31, 1994              SIX MONTHS ENDED JUNE 30, 1995
                                            ------------------------------------------   ---------------------------------------
                                                         OTHER AD-                                     OTHER AD-
                                                         JUSTMENTS                                     JUSTMENTS
                                            HISTORICAL   (NOTE 2)        PRO FORMA       HISTORICAL    (NOTE 2)      PRO FORMA
                                            ----------  -----------   ----------------   -----------  -----------   ------------
                                                              (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                         <C>         <C>           <C>                <C>          <C>           <C>
Revenue...................................  $      534     $--        $            534   $       274    $--         $      274
Cost of Revenue...........................        (318)    --                     (318)         (156)    --               (156)
                                            ----------  -----------   ----------------   -----------  -----------   ------------
                                                   216     --                      216           118     --                118
General and Administrative
 Expenses.................................        (138)    --                     (138)          (62)    --                (62)
                                            ----------  -----------   ----------------   -----------  -----------   ------------
Operating Income..........................          78     --                       78            56     --                 56
Other Income (Expenses):
  Gain on Subsidiary's Stock Transactions,
  net.....................................          54       (54)(a)         --                    3        (3)(a)      --
  Investment Income, net..................          30         3(b)                 33            24         2(b)           26
  Interest Expense, net...................         (36)       --(c)                (36)          (23)       --(c)          (23)
  Other, net..............................          (2)    --                      )(2           140     --                140
                                            ----------  -----------   ----------------   -----------  -----------   ------------
                                                    46       (51)                  )(5           144        (1)            143
Equity in Loss of MFS.....................        (102)      102(d)          --                  (85)       85(d)       --
                                            ----------  -----------   ----------------   -----------  -----------   ------------
Earnings before Income Taxes and Minority
 Interest in Net Losses (Income) of
 Subsidiaries.............................          22        51                    73           115        84             199
Benefit (Provision) for Income Taxes......          10        18(e)                 28           (70)       --(e)          (70)
Minority Interest in Net Losses (Income)
 of Subsidiaries..........................           1     --                        1            (8)    --                 (8)
                                            ----------  -----------   ----------------   -----------  -----------   ------------
Net Earnings..............................  $       33     $  69      $            102   $        37    $   84      $      121
                                            ----------  -----------   ----------------   -----------  -----------   ------------
                                            ----------  -----------   ----------------   -----------  -----------   ------------
Net Earnings Per Common and Common
 Equivalent Share.........................  $     1.63                $           4.73   $      1.75                $     5.39
                                            ----------                ----------------   -----------                ------------
                                            ----------                ----------------   -----------                ------------
Weighted Average Shares Outstanding.......  20,438,806                      21,636,604(f)  21,261,632               22,580,435(f)
                                            ----------                ----------------   -----------                ------------
                                            ----------                ----------------   -----------                ------------
</TABLE>

    The accompanying notes are an integral part of these pro forma financial
                                  statements.

                                      F-18
<PAGE>
                            KIEWIT DIVERSIFIED GROUP
                   PRO FORMA CONDENSED STATEMENTS OF EARNINGS
                          YEAR ENDED DECEMBER 31, 1994
                       AND SIX MONTHS ENDED JUNE 30, 1995
                    (SCENARIO 2 ASSUMING 5 MILLION SHARES OF
                EXCHANGEABLE STOCK EXCHANGED FOR CLASS D STOCK)

<TABLE>
<CAPTION>
                                                                                                    (UNAUDITED)
                                                YEAR ENDED DECEMBER 31, 1994              SIX MONTHS ENDED JUNE 30, 1995
                                         ------------------------------------------   ---------------------------------------
                                                        OTHER                                         OTHER
                                                     ADJUSTMENTS                                   ADJUSTMENTS
                                         HISTORICAL   (NOTE 2)        PRO FORMA       HISTORICAL    (NOTE 2)      PRO FORMA
                                         ----------  -----------   ----------------   -----------  -----------   ------------
                                                           (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                      <C>         <C>           <C>                <C>          <C>           <C>
Revenue................................  $      534    $--         $            534   $       274    $--         $      274
Cost of Revenue........................        (318)    --                     (318)         (156)    --               (156)
                                         ----------  -----------   ----------------   -----------  -----------   ------------
                                                216     --                      216           118     --                118
General and Administrative Expenses....        (138)    --                     (138)          (62)    --                (62)
                                         ----------  -----------   ----------------   -----------  -----------   ------------
Operating Income.......................          78     --                       78            56     --                 56
Other Income (Expense):
  Gain on Subsidiary's Stock
   Transactions, net...................          54       (54)(a)         --                    3        (3)(a)      --
  Investment Income, net...............          30         5(b)                 35            24         3(b)           27
  Interest Expense, net................         (36)       --(c)                (36)          (23)       --(c)          (23)
  Other, net...........................          (2)    --                      )(2           140     --                140
                                         ----------  -----------   ----------------   -----------  -----------   ------------
                                                 46       (49)                  )(3           144     --                144
Equity in Loss of MFS..................        (102)      102(d)          --                  (85)       85(d)       --
                                         ----------  -----------   ----------------   -----------  -----------   ------------

Earnings before Income Taxes and
 Minority Interest in Net Losses
 (Income) of Subsidiaries..............          22        53                    75           115        85             200
Benefit (Provision) for Income Taxes...          10        17(e)                 27           (70)       --(e)          (70)
Minority Interest in Net Losses
 (Income) of Subsidiaries..............           1     --                        1            (8)    --                 (8)
                                         ----------  -----------   ----------------   -----------  -----------   ------------
Net Earnings...........................  $       33    $   70      $            103   $        37    $   85      $      122
                                         ----------  -----------   ----------------   -----------  -----------   ------------
                                         ----------  -----------   ----------------   -----------  -----------   ------------
Net Earnings Per Common and Common
 Equivalent Share......................  $     1.63                $           4.63   $      1.75                $     5.23
                                         ----------                ----------------   -----------                ------------
                                         ----------                ----------------   -----------                ------------
Weighted Average Shares Outstanding....  20,438,806                      22,389,129(f)  21,261,632               23,413,630(f)
                                         ----------                ----------------   -----------                ------------
                                         ----------                ----------------   -----------                ------------
</TABLE>

    The accompanying notes are an integral part of these pro forma financial
                                  statements.

                                      F-19
<PAGE>
                            KIEWIT DIVERSIFIED GROUP
                       PRO FORMA CONDENSED BALANCE SHEET
                                  (UNAUDITED)
                                 JUNE 30, 1995
(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                                                   ADJUSTMENTS
                                                                                      HISTORICAL    (NOTE 3)     PRO FORMA
                                                                                      ----------   -----------   ---------
                                                                                             (DOLLARS IN MILLIONS)
<S>                                                                                   <C>          <C>           <C>
Current Assets:
  Cash and cash equivalents.........................................................    $  350       $   75(a)    $  425
  Marketable securities.............................................................       428        --             428
  Receivable, net...................................................................        77        --              77
  Deferred income taxes.............................................................        11        --              11
  Other.............................................................................        34                        34
                                                                                      ----------   -----------   ---------
    Total Current Assets............................................................       900           75          975
Property, Plant and Equipment, net..................................................       469        --             469
Investments.........................................................................       370        --             370
Intangible Assets, net..............................................................       385        --             385
Net Assets of MFS...................................................................       447         (447)(b)    --
Other Assets........................................................................        62        --              62
                                                                                      ----------   -----------   ---------
                                                                                        $2,633       $ (372)      $2,261
                                                                                      ----------   -----------   ---------
                                                                                      ----------   -----------   ---------

                                           LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
  Accounts payable..................................................................    $   42       $--          $   42
  Current portion of long-term debt:
    Telecommunications..............................................................         9        --               9
    Other...........................................................................         3           (1)(c)        2
  Accrued costs and billings in excess of revenue on uncompleted contracts..........        14        --              14
  Accrued reclamation and other mining costs........................................        17        --              17
  Other.............................................................................       103           12(d)       115
                                                                                      ----------   -----------   ---------
    Total Current Liabilities.......................................................       188           11          199
Long-term Debt, less current portion:
  Telecommunications................................................................       290        --             290
  Other.............................................................................        82           (1)(c)       81
Deferred Income Taxes...............................................................       309          (93)(e)      216
Retirement Benefits.................................................................        47        --              47
Accrued Reclamation Costs...........................................................       102        --             102
Other Liabilities...................................................................        83        --              83
Minority Interest...................................................................       193                       193

Stockholders' Equity:
  Common equity.....................................................................     1,330           75(a)
                                                                                                       (447)(b)
                                                                                                          2(c)
                                                                                                        (12)(d)
                                                                                                         93(e)
                                                                                                                   1,041
  Foreign currency adjustment.......................................................         1        --               1
  Net unrealized holding gain (loss)................................................         8        --               8
                                                                                      ----------   -----------   ---------
    Total Stockholders' Equity......................................................     1,339         (289)       1,050
                                                                                      ----------   -----------   ---------
                                                                                        $2,633       $ (372)      $2,261
                                                                                      ----------   -----------   ---------
                                                                                      ----------   -----------   ---------
</TABLE>

    The accompanying notes are an integral part of this pro forma financial
                                   statement.

                                      F-20
<PAGE>
                            KIEWIT DIVERSIFIED GROUP
                       PRO FORMA CONDENSED BALANCE SHEET
                                  (UNAUDITED)
                                 JUNE 30, 1995
(SCENARIO 2 ASSUMING 5 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

                                       ASSETS

<TABLE>
<CAPTION>
                                                                                                   ADJUSTMENTS
                                                                                      HISTORICAL    (NOTE 3)     PRO FORMA
                                                                                      ----------   -----------   ---------
                                                                                             (DOLLARS IN MILLIONS)
<S>                                                                                   <C>          <C>           <C>
Current Assets:
  Cash and cash equivalents.........................................................    $  350       $   84(a)    $  434
  Marketable securities.............................................................       428           42(a)       470
  Receivable, net...................................................................        77        --              77
  Deferred income taxes.............................................................        11        --              11
  Other.............................................................................        34                        34
                                                                                      ----------   -----------   ---------
Total Current Assets................................................................       900          126        1,026
Property, Plant and Equipment, net..................................................       469        --             469
Investments.........................................................................       370        --             370
Intangible Assets, net..............................................................       385        --             385
Net Assets of MFS...................................................................       447         (447)(b)    --
Other Assets........................................................................        62        --              62
                                                                                      ----------   -----------   ---------
                                                                                        $2,633       $ (321)      $2,312
                                                                                      ----------   -----------   ---------
                                                                                      ----------   -----------   ---------
                                           LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
  Accounts payable..................................................................    $   42       $--          $   42
  Current portion of long-term debt:................................................
    Telecommunications..............................................................         9        --               9
    Other...........................................................................         3           (1)(c)        2
  Accrued costs and billings in excess of revenue on uncompleted contracts..........        14        --              14
  Accrued reclamation and other mining costs........................................        17        --              17
  Other.............................................................................       103           12(d)       115
                                                                                      ----------   -----------   ---------
Total Current Liabilities...........................................................       188           11          199
Long-term Debt, less current portion:...............................................
  Telecommunications................................................................       290        --             290
  Other.............................................................................        82           (1)(c)       81
Deferred Income Taxes...............................................................       309          (93)(e)      216
Retirement Benefits.................................................................        47        --              47
Accrued Reclamation Costs...........................................................       102        --             102
Other Liabilities...................................................................        83        --              83
Minority Interest...................................................................       193                       193
Stockholders' Equity:
  Common equity.....................................................................     1,330          126(a)
                                                                                                       (447)(b)
                                                                                                          2(c)
                                                                                                        (12)(d)
                                                                                                         93(e)
                                                                                                                   1,092
  Foreign currency adjustment.......................................................         1        --               1
  Net unrealized holding gain (loss)................................................         8        --               8
                                                                                      ----------   -----------   ---------
Total Stockholders' Equity..........................................................     1,339         (238)       1,101
                                                                                      ----------   -----------   ---------
                                                                                        $2,633       $ (321)      $2,312
                                                                                      ----------   -----------   ---------
                                                                                      ----------   -----------   ---------
</TABLE>

    The accompanying notes are an integral part of this pro forma financial
                                   statement.

                                      F-21
<PAGE>
                            KIEWIT DIVERSIFIED GROUP
               NOTES TO PRO FORMA CONDENSED FINANCIAL STATEMENTS

1.  BASIS OF REPORTING
    The  accompanying  pro forma  condensed financial  statements of  the Kiewit
Diversified  Group  ("the  Group")  are  presented  based  upon  the  historical
financial  statements and the notes thereto of  the Group, as adjusted to remove
the earnings statement and balance sheet accounts  of MFS and to give effect  to
certain  other elements of the MFS  Recapitalization, the Exchange Offer and the
Spin-off, (together, the "Transactions"). The pro forma information assumes,  in
two  separate scenarios, that 3 million (Scenario  1) and 5 million (Scenario 2)
shares of  the  Exchangeable  Stock  and all  the  Exchangeable  Debentures  are
exchanged  in the Exchange Offer. Such  pro forma financial statements should be
read in conjunction with  the separate historical  financial statements and  the
notes  thereto of  the Group  incorporated herein  by reference.  Such pro forma
financial statements are  not necessarily  indicative of the  future results  of
operations or financial position.

    The  PKS Board of Directors preliminarily approved a plan to make a tax-free
distribution of its entire ownership interest in MFS to the Class D Stockholders
at a special meeting  on June 9,  1995. The operating results  of MFS have  been
classified  as a single line  item on the condensed  statements of earnings. The
Group's proportionate share of the  net assets of MFS at  June 30, 1995 of  $447
million have been reported separately on the condensed balance sheet.

    Completion  of the Transactions has been assumed to be as of June 30,1995 in
the pro forma condensed balance sheet and as of December 26, 1993 and January 1,
1995, in  the pro  forma condensed  statements of  earnings for  the year  ended
December 31, 1994 and the six months ended June 30, 1995, respectively.

    The  significant accounting policies followed by the Group, described in the
notes to its historical financial  statements incorporated herein by  reference,
have  been  used in  preparing the  accompanying  pro forma  condensed financial
statements.

    Although the pro forma  financial statements of  PKS' Diversified Group  and
Construction  &  Mining  Group  separately report  the  assets,  liabilities and
stockholders' equity of PKS attributed to  each such group, legal title to  such
assets  and responsibility  for such  liabilities will  not be  affected by such
attribution.  Holders  of  Class  B,  Class  C  Stock  and  Class  D  Stock  are
stockholders  of  PKS. Accordingly,  the  PKS pro  forma  consolidated financial
statements and related notes should be read in conjunction with these pro  forma
financial statements.

2.  STATEMENTS OF EARNINGS PRO FORMA ADJUSTMENTS
    As  described in Note 1, the historical statements of earnings for the Group
have been adjusted to remove the income and expense accounts of MFS and to  give
effect to certain other elements of the Transactions. The other adjustments made
in  preparation of  the Group's Pro  Forma Statements of  Earnings are described
below:

    (a) Adjustment  made  to  reverse  the   gain  recognized  from  MFS   stock
        transactions  that would not have been recorded if the Transactions were
        completed at the beginning of the periods.

    (b) Adjustment  made  to  recognize  additional  interest  income  on   cash
        transferred  from Kiewit Construction & Mining  Group upon exchange of 3
        million shares of Exchangeable Stock to Class D Stock in Scenario 1  and
        5  million shares of Exchangeable Stock to  Class D Stock in Scenario 2.
        The interest  rate  used to  calculate  the additional  interest  income
        approximates the average rate earned by the Group during the periods.

    (c) No  adjustment has been made for the decrease in interest expense due to
        the assumed  exchange of  the Exchangeable  Debentures to  stock as  the
        adjustment is less than $1 million.

    (d) Adjustment made to remove the earnings statement account of MFS.

                                      F-22
<PAGE>
                            KIEWIT DIVERSIFIED GROUP
         NOTES TO PRO FORMA CONDENSED FINANCIAL STATEMENTS (CONTINUED)

2.  STATEMENTS OF EARNINGS PRO FORMA ADJUSTMENTS (CONTINUED)
    (e) Adjustment made to reflect the tax effect of the above adjustments.

    (f) Scenario  1 assumes 3 million shares of Exchangeable Stock are exchanged
        for  Class  D  Stock  and  Scenario  2  assumes  5  million  shares   of
        Exchangeable Stock are exchanged for Class D Stock at the prior year end
        conversion  ratio, adjusted  for dividends declared  during the periods.
        The pro forma weighted average shares also include an additional  69,010
        Class  D  Shares  attributable  to  the  exchange  of  the  Exchangeable
        Debentures.

3.  BALANCE SHEET PRO FORMA ADJUSTMENTS
    As described in Note 1, the historical  balance sheet of the Group has  been
adjusted  to  remove the  balance sheet  accounts attributable  to MFS  and give
effect to certain other elements of the Transactions. The other adjustments made
in preparation of the  Group's Pro Forma Condensed  Balance Sheet are  described
below:

    (a) Adjustment  made to reflect  the increase in  cash, cash equivalents and
        marketable securities as the result of the exchange of 3 million  shares
        (Scenario  1) and 5 million shares (Scenario 2) of Exchangeable Stock at
        the prior  year end  stock prices  and conversion  ratios, adjusted  for
        dividends declared during the periods.

    (b) Adjustment to remove the Group's investment in MFS.

    (c) Adjustment  made to reflect the  exchange of the Exchangeable Debentures
        for Class D Stock.

    (d) Adjustment made to  record the  accrual of  certain estimated  corporate
        United  States  Federal  income  taxes  attributable  to  the  corporate
        built-in  gain  on  the  stock  of  MFS  being  distributed  to  certain
        non-United States Class D stockholders.

    (e) Adjustment  made to reverse certain  deferred tax liabilities recognized
        on gains from MFS stock transactions that are no longer payable.

4.  EARNINGS PER SHARE
    Primary earnings per  share of  common stock  have been  computed using  the
weighted  average number of shares outstanding during each period. Fully diluted
earnings per  share have  not been  presented because  they are  not  materially
different from primary earnings per share.

                                      F-23
<PAGE>
                                                                         ANNEX I

                          CS FIRST BOSTON CORPORATION

July 21, 1995
Board of Directors
Peter Kiewit Sons', Inc.
1000 Kiewit Plaza
Omaha, NE 68131

Dear Sirs:

    You  have advised us that Peter Kiewit  Sons', Inc. ("PKS" or the "Company")
proposes to cause  its wholly  owned subsidiary, Kiewit  Diversified Group  Inc.
("KDG"  and,  collectively  with  the Company  and  the  Company's  wholly owned
subsidiary Kiewit Construction  Group Inc., the  "Companies"), to distribute  to
PKS  (the "Distribution")  all the  shares of common  stock, par  value $.01 per
share (the "MFS Common Stock"), of MFS Communications Company, Inc. ("MFS")  and
all the shares of a newly issued Series B convertible preferred stock, par value
$.01  per share (the "MFS  Preferred Stock"), of MFS held  by KDG. You have also
advised us that, immediately following the Distribution, PKS will distribute all
the MFS  Common  Stock  and  the  MFS Preferred  Stock  then  held  by  it  (the
"Spin-Off")  on a pro rata basis to  the holders (the "Class D Stockholders") of
the Class D Diversified Group  Convertible Exchangeable Common Stock, par  value
$.0625 per share (the "Class D Common Stock"), of the Company.

    You  have advised us that the Spin-Off will be consummated only if it can be
effected on a tax-free basis, which is possible only if, prior to the  Spin-Off,
KDG  holds at least 80% of the total  voting power for the election of directors
of MFS.  Accordingly, in  order  to facilitate  the  Spin-Off, KDG  proposes  to
exchange  2.9 million  shares of MFS  Common Stock  currently held by  it for 15
million shares  of  MFS  Preferred  Stock (the  "MFS  Exchange")  prior  to  the
Distribution.  You  have advised  us  that the  Company  has determined  the MFS
Exchange to  be the  most feasible  method  of facilitating  the Spin-Off  on  a
tax-free  basis, and that the Spin-Off will qualify as a tax-free spin-off under
Section 355 of the Internal Revenue Code  of 1986, as amended. In addition,  you
have  advised us  that the  Company and  MFS will  take all  action necessary to
ensure that the MFS Common Stock and  the MFS Preferred Stock to be received  by
the  Class D  Stockholders in the  Spin-Off will not  be "restricted securities"
within the meaning  of Rule 144(a)(3)  promulgated under the  Securities Act  of
1933, as amended (the "Securities Act"), and will not be subject to restrictions
on  transfer  under the  Securities Act  (other than  restrictions imposed  as a
result of the holder being an "affiliate" (within the meaning of Rule  144(a)(1)
under the Securities Act) of MFS).

    You  have also advised us  that, prior to the  consummation of the Spin-Off,
the holders (the "Class B Stockholders")  of the Company's Class B  Construction
and Mining Group Nonvoting Restricted Redeemable Convertible Exchangeable Common
Stock,  par value  $.0625 (the  "Class B  Common Stock"),  and the  holders (the
"Class C Stockholders" and, collectively with  the Class B Stockholders and  the
Class  D  Stockholders, the  "Company Stockholders")  of  the Company's  Class C
Construction and  Mining  Group Nonvoting  Redeemable  Convertible  Exchangeable
Common  Stock, par value $.0625 (the "Class  C Common Stock"), will be given the
opportunity to exchange their shares  for shares of Class  D Common Stock at  an
exchange ratio of .416598 shares of Class D Common Stock for each share of Class
B  Common Stock or Class C Common Stock (the "Common Stock Exchanges"). You have
advised us  that Class  B Stockholders  and Class  C Stockholders  who elect  to
exchange  their shares will be  required to do so  during a period (the "Special
Window Period") of  at least  20 business  days. You  have advised  us that  you
estimate  that an  aggregate of  approximately three  million shares  of Class B
Common Stock and  Class C  Common Stock  will be  exchanged for  Class D  Common
Stock,  and we have  assumed, in any event,  that less than  an aggregate of six
million shares  of  Class B  Common  Stock and  Class  C Common  Stock  will  be
exchanged  for Class D Common Stock. We  understand that, while the Company does
not currently anticipate  that it will  be necessary  to impose a  limit on  the
amount  of Class B Common Stock and Class  C Common Stock that will be exchanged
for
<PAGE>
Class D Common Stock,  the Board of  Directors of the  Company has reserved  the
right  to impose such a limit if it determines that the acceptance of all shares
tendered for exchange would not be in  the best interests of the Company or  its
stockholders.  You have advised us that any such limit would be imposed on a pro
rata basis.

    In addition, you have advised us that, during the Special Window Period, (a)
the holders of the Company's 1990 Series Convertible Debentures due October  31,
2000  (the "1990 Series  Debentures") will be given  the opportunity to exchange
such 1990 Series  Debentures for  approximately 24.8  shares of  Class C  Common
Stock  and approximately  24.8 shares  of Class D  Common Stock  for each $1,000
principal amount of  1990 Series Debentures,  (b) the holders  of the  Company's
1991  Series  Convertible  Debentures due  October  31, 2001  (the  "1991 Series
Debentures") will  be  given  the  opportunity  to  exchange  such  1991  Series
Debentures for approximately 23 shares of Class C Common Stock and approximately
23  shares of  Class D  Common Stock  for each  $1,000 principal  amount of 1991
Series Debentures, and  (c) the  holders of the  Company's 1993  Series Class  D
Convertible  Debentures due October 31, 2003  (the "1993 Series Debentures" and,
collectively with the 1990 Series Debentures and the 1991 Series Debentures, the
"Debentures"; the holders of  the Debentures being  collectively referred to  as
the  "Debentureholders") will  be given  the opportunity  to exchange  such 1993
Series Debentures for  approximately 19.96 shares  of Class D  Common Stock  for
each  $1,000  principal  amount  of 1993  Series  Debentures  (collectively, the
"Debenture Exchanges").

    The Distribution, the Spin-Off, the MFS Exchange, the Common Stock Exchanges
and the Debenture Exchanges will be described in the Company's joint  prospectus
with  MFS to  be distributed  to the  Company's Class  B, Class  C, and  Class D
Stockholders and to the  Debentureholders (the "Prospectus"). The  Distribution,
the  Spin-Off, the  MFS Exchange, the  Common Stock Exchanges  and the Debenture
Exchanges, upon the terms, and subject to the conditions, set forth in the draft
Prospectus referred  to  below  are  collectively  referred  to  herein  as  the
"Transactions".

    You  have  asked us  to  advise you  with respect  to  the fairness,  from a
financial point of view, of the Transactions to the Company Stockholders.

    In arriving  at our  opinion, we  have reviewed  certain publicly  available
business  and financial information  relating to the Companies  and MFS. We have
also reviewed a draft dated July 11, 1995 of the Prospectus, a draft dated  June
2,  1995  of the  Certificate of  Designation  for the  MFS Preferred  Stock and
certain  other  information,  including   financial  forecasts  and  pro   forma
financials,  provided to  us by  the Companies  and MFS,  and have  met with the
managements of the Companies and MFS to discuss the businesses and prospects  of
the  Companies and MFS, as  well as the terms of  the Transactions. We have also
considered certain financial and stock market data of MFS, and we have  compared
that  data with  similar data  for other  publicly held  companies in businesses
similar to those of MFS.  In addition, we have  compared the financial terms  of
the  MFS Preferred Stock with  the financial terms of  other securities and have
considered   such   other   information,   financial   studies,   analyses   and
investigations  and  financial,  economic  and market  criteria  that  we deemed
relevant. We have also analyzed the financial benefits that will be afforded the
Class D Stockholders as a result of the Spin-Off and we have considered the fact
that the  Class  B Stockholders  and  Class C  Stockholders  will be  given  the
opportunity, as a result of the Common Stock Exchanges, to exchange their shares
of  Class B Common Stock and  Class C Common Stock for  shares of Class D Common
Stock prior to  the Distribution  and thereby  to participate  in the  financial
benefits of the Spin-Off.

    In  connection with our  review, we have not  assumed any responsibility for
independent verification  of any  of the  foregoing information  (including  the
information  contained in  the draft  Prospectus) and  have relied  on its being
complete and accurate in  all material respects. With  respect to the  financial
forecasts,  we have  assumed that  they have  been reasonably  prepared on bases
reflecting  the  best  currently  available  estimates  and  judgments  of   the
managements  of  each  of the  Companies  and  MFS as  to  the  future financial
performance of each of the Companies and MFS, respectively. In addition, we have
not made an  independent evaluation or  appraisal of the  assets or  liabilities
(contingent  or otherwise)  of any  of the  Companies or  MFS, nor  have we been
furnished with any  such evaluations  or appraisals.  We have  assumed that  the
Company will complete the Spin-Off as described
<PAGE>
in  the draft Prospectus and that the  consummation of the Transactions will not
result in any default or similar  event under any loan agreement, instrument  of
indebtedness or other contract of the Companies or MFS which will not be waived.

    We  did not participate in  the determination by the  Company and MFS of the
terms of any of the  Transactions or the MFS Preferred  Stock and have not  been
asked  to  consider alternative  means of  effecting a  distribution of  the MFS
Common Stock  or  the  MFS Preferred  Stock  to  the Class  D  Stockholders.  In
addition,   our  opinion  does  not  in  any  manner  address  or  constitute  a
recommendation regarding the business decisions of the Company or MFS to  effect
the  MFS Exchange or the Spin-Off or to  offer the Special Window Period for the
Common Stock Exchanges or the determination by the Company of the exchange ratio
and other  terms  and  conditions  applicable to  the  Common  Stock  Exchanges.
Furthermore,  our  opinion  does  not  in any  manner  address  or  constitute a
recommendation regarding  the business  decision  of the  Company to  offer  the
Special  Window Period for  the Debenture Exchanges or  the determination by the
Company of the  terms and  conditions of  the Debenture  Exchanges. Although  we
understand  that the  Company intends  to effect  certain other  transactions in
connection with the Transactions, our opinion does not in any manner address  or
constitute  a recommendation regarding the business  decisions of the Company to
effect, or the financial impact  on the Company or  any of its stockholders  of,
such other transactions. In addition, our opinion does not in any manner address
or constitute a recommendation regarding whether Class B Stockholders or Class C
Stockholders  should elect to exchange their shares  of Class B Common Stock and
Class C Common  Stock for  shares of  Class D  Common Stock  during the  Special
Window  Period  or  whether  Debentureholders  should  elect  to  exchange their
Debentures for Class C Common Stock or Class D Common Stock, as the case may be,
during the Special  Window Period.  Moreover, we express  no opinion  as to  the
market  value of the MFS Preferred Stock upon receipt by KDG pursuant to the MFS
Exchange or the prices at which the MFS Common Stock or the MFS Preferred  Stock
will  trade subsequent to  the MFS Exchange  or the Spin-Off.  The actual market
value of the MFS  Common Stock and  the MFS Preferred  Stock may vary  depending
upon  changes  in interest  rates,  dividend rates,  market  conditions, general
economic conditions and  other factors  which generally influence  the price  of
securities.  Our opinion is  necessarily based upon  financial, economic, market
and other conditions as they exist and can be evaluated on the date hereof.

    We have acted as the financial advisor  to a special committee of the  Board
of  Directors  of  the Company  constituted  to  review certain  aspects  of the
Transactions and will  receive a  fee that is  contingent upon  our rendering  a
fairness  opinion. In  the past,  CS First  Boston performed  certain investment
banking services for the Company and received customary fees for such  services.
In  the ordinary course of our business,  CS First Boston and its affiliates may
actively trade the debt and equity securities  of MFS for their own account  and
for  the accounts of customers and, accordingly, may  at any time hold a long or
short position in such securities.

    Based upon and subject to the foregoing,  it is our opinion that, as of  the
date  hereof, the Transactions  are fair from  a financial point  of view to the
Company Stockholders.

                                          Very truly yours,

                                          CS FIRST BOSTON CORPORATION
<PAGE>
                                                                        ANNEX II

                              LEHMAN BROTHERS INC.

CONFIDENTIAL

                                 JULY 17, 1995

Board of Directors
Peter Kiewit Sons', Inc.
1000 Kiewit Plaza
Omaha, NE 68131

Members of the Board:

    We  understand  that Peter  Kiewit Sons',  Inc.  (the "Company")  intends to
effect a tax-free distribution  to the holders (the  "Class D Stockholders")  of
its  Class D Diversified Group Convertible Exchangeable Common Stock (the "Class
D Common Stock") of all of the  shares of Common Stock ("MFS Common Stock")  and
Preferred  Stock  ("MFS Preferred  Stock") of  MFS Communications  Company, Inc.
("MFS"), an indirect subsidiary of the Company, held by the Company at the  time
of  the  distribution  (the  "Distribution").  Kiewit  Diversified  Group,  Inc.
("Diversified"), a wholly owned  subsidiary of the  Company, currently owns  the
shares  of  MFS  Common  Stock.  We understand  that  immediately  prior  to the
Distribution, Diversified will exchange a portion  of its MFS Common Stock  (2.9
million  shares) for $15 million face value  of MFS Preferred Stock to be issued
by MFS (the "MFS Exchange").  The MFS Preferred Stock  will have five votes  per
share  and, together with  the remaining MFS Common  Stock owned by Diversified,
will provide Diversified with  in excess of  80% of the  voting interest in  MFS
with respect to the election of directors. Diversified will then dividend to the
Company all of the MFS Common Stock and MFS Preferred Stock held by Diversified,
and  the Company  will distribute  such stock, together  with $1  million of MFS
Common Stock acquired by the Company from MFS, to the Class D Stockholders.

    We further  understand that  prior  to the  Distribution, the  Company  will
provide the holders (the "Class B Stockholders") of its Class B Construction and
Mining  Group  Nonvoting Restricted  Redeemable Convertible  Exchangeable Common
Stock (the "Class B Common Stock") and the holders (the "Class C  Stockholders")
of  its  Class  C Construction  and  Mining Group  Voting  Restricted Redeemable
Convertible Exchangeable  Common Stock  (the  "Class C  Common Stock")  with  an
opportunity  to exchange shares of Class B Common Stock and Class C Common Stock
for shares of Class D Common Stock (the "B, C-D Exchange"). The B, C-D  Exchange
will  be  based  solely  on  the book-value  based  formula  established  in the
Certificate of Incorporation of the Company applicable to conversions of Class B
Common Stock and Class C Common Stock into Class D Common Stock as of January 1,
1995, adjusted  for  dividends  paid  through the  date  of  the  exchange  (the
"Exchange  Formula"), but  holders of  Class B Common  Stock and  Class C Common
Stock will  be granted  an opportunity  to exchange  during a  specified  window
period  prior to the Distribution which  otherwise would not have been available
to them  under  the Certificate  of  Incorporation,  and thereby  will  have  an
opportunity  to participate in the Distribution on the same terms as the Class D
Stockholders. However, in arriving  at our opinion as  described below, we  have
assumed,  based upon  the Company's estimate  of the likely  levels of exchanges
pursuant to the Exchange Offer and with the Company's consent, that no more than
6 million  shares of  Class B  Common Stock  and Class  C Common  Stock will  be
exchanged  for shares  of Class  D Common Stock.  The Class  B Stockholders, the
Class C Stockholders and the Class  D Stockholders are collectively referred  to
herein  as the "Company Stockholders" and the Distribution, the MFS Exchange and
the B,  C-D  Exchange are  collectively  referred  to herein  as  the  "Proposed
Transactions."  The terms and  conditions of the  Distribution, MFS Exchange and
the B, C-D Exchange are set forth in more detail in the most recent draft of the
Joint Prospectus related to the Proposed Transactions (the "Prospectus").
<PAGE>
Board of Directors
Peter Kiewit Sons', Inc.
Page 2

    We have been requested by  the Board of Directors  of the Company to  render
our opinion with respect to the fairness, from a financial point of view, to the
Company Stockholders of the Proposed Transactions, taken as a whole. We have not
been  requested to opine as to, and our  opinion does not in any manner address,
the Company's underlying business decision to proceed with or effect all or  any
portion  of the  Proposed Transactions or  any alternative means  of effecting a
distribution  of  the  Company's  equity  interests  in  MFS  to  the  Class   D
Stockholders.

    In  arriving at our  opinion, we reviewed and  analyzed: (1) the Prospectus,
(2) such publicly available  information concerning MFS which  we believe to  be
relevant  to our  inquiry, including  the Form  10-K for  the fiscal  year ended
December 31, 1994 and its annual report, (3) financial and operating information
with respect to the business, operations,  and prospects of MFS and the  Company
furnished  to us by  the Company, (4)  a comparison of  the historical financial
results and present  financial condition of  MFS and the  Company with those  of
other  companies which we deemed relevant, (5) a trading history of MFS's common
stock from May 1993 to the present and a comparison of that trading history with
those of  other companies  which we  deemed relevant,  (6) a  comparison of  the
financial  terms of the MFS Exchange and  the MFS Preferred Stock with the terms
of certain other transactions  and securities which we  deemed relevant and  (7)
Diversified's  tax bases  of its  equity interests  in MFS  and, based  upon the
advice of the Company  and its tax  advisors, the likely  tax impact of  various
disposition  strategies  with respect  to  the equity  interests  in MFS  or its
underlying assets and the proposed tax and financial reporting treatment of  the
Distribution.  In addition, we have had  discussions with the managements of MFS
and the  Company concerning  their  respective businesses,  operations,  assets,
financial condition and prospects and undertook such other studies, analyses and
investigations as we deemed appropriate.

    In arriving at our opinion, we have assumed and relied upon the accuracy and
completeness  of the financial and other information used by us without assuming
any responsibility for  independent verification  of such  information and  have
further  relied upon the  assurances of the  managements of MFS  and the Company
that they are not aware of any facts that would make such information inaccurate
or misleading. With respect to the  financial forecasts of the Company and  MFS,
we  have assumed that they have been reasonably prepared on bases reflecting the
best currently  available estimates  and  judgments of  the managements  of  the
Company  and MFS as to the future  financial performance of the Company and MFS,
respectively. In  addition,  we  have  not made  an  independent  evaluation  or
appraisal  of the assets or liabilities (contingent or otherwise) of the Company
or MFS, nor have we been furnished  with any such evaluations or appraisals.  We
have  assumed that the consummation of the Proposed Transactions will not result
in any  default  or  similar  event under  any  loan  agreement,  instrument  of
indebtedness  or other contract of the Company  or MFS which will not be waived.
Our opinion  is necessarily  based upon  financial, market,  economic and  other
conditions,  and upon  tax laws, accounting  standards and  legal and regulatory
requirements, as they exist  on, and can  be evaluated as of,  the date of  this
letter,  and, with your consent, we have not considered possible changes in such
applicable tax laws, accounting standards or regulatory and legal requirements.

    In arriving at our opinion,  we have relied upon  the advice of the  Company
and  its tax advisors that the Proposed  Transactions, and in particular the MFS
Exchange, are the most feasible methods  of ensuring that the Distribution  will
qualify as a tax-free spin-off under Section 355 of the Internal Revenue Code of
1986,  as amended. In  addition, we have  further relied upon  the advice of the
Company and  its legal  advisors  that the  shares of  MFS  Common Stock  to  be
received  by the  Class D  Stockholders in  the Distribution  (other than shares
received by persons  who are "affiliates"  of MFS under  the federal  securities
laws) will be freely tradeable securities.

    We  also have not been requested to opine as to, and our opinion does not in
any manner  address,  the fairness,  from  a financial  point  of view,  of  the
Exchange  Formula, which as described  above is based on  the book value formula
set forth in the Certificate of Incorporation of the Company.
<PAGE>
Board of Directors
Peter Kiewit Sons', Inc.
Page 3

    In addition, we have not been requested to opine as to, and our opinion does
not in any manner address, the price at which shares of MFS Common Stock and MFS
Preferred Stock will actually trade following consummation of the  Distribution.
In  addition, trading in shares of MFS  Common Stock and MFS Preferred Stock may
be characterized by a  period of redistribution among  the Class D  Stockholders
who  receive such shares  in the Distribution which  may temporarily depress the
trading prices of such shares during such period. The market prices of shares of
MFS Common Stock  and MFS Preferred  Stock also will  fluctuate with changes  in
prevailing  interest  rates,  economic  and  financial  market  conditions,  the
financial condition  and prospects  of MFS,  and other  factors which  generally
influence the prices of securities.

    Based  upon and subject  to the foregoing, we  are of the  opinion as of the
date hereof that,  from a financial  point of view,  the Proposed  Transactions,
taken as a whole, are fair to the Company Stockholders.

    We  have acted as  financial advisor to  the Company in  connection with the
Proposed Transactions and will receive an  additional fee from the Company  upon
delivery  of this opinion. In  addition, the Company has  agreed to indemnify us
against certain liabilities  which might arise  out of our  acting as  financial
advisor  and  the rendering  of  this opinion.  We  also have  performed various
investment banking  services for  the  Company in  the  past and  have  received
customary  fees for such  services. In the  ordinary course of  our business, we
actively trade in the debt and equity securities of MFS for our own account  and
for  the accounts of our customers and, accordingly, may at any time hold a long
or short position in such securities.

    This opinion is for  the use and  benefit of the Board  of Directors of  the
Company.  This  opinion  is  not  intended  to  be  and  does  not  constitute a
recommendation to any Class B Stockholder  or Class C Stockholder as to  whether
to  exchange their shares  of Class B Common  Stock or Class  C Common Stock for
shares of Class D Common Stock in the B, C-D Exchange.

                                          Very truly yours,

                                          LEHMAN BROTHERS

<PAGE>

                                           , 1995

                            PETER KIEWIT SONS', INC.

                     INSTRUCTIONS FOR LETTER OF TRANSMITTAL
                               TO TENDER SHARES OF

                                  CLASS B STOCK

                                  FOR SHARES OF

                                  CLASS D STOCK

                 PURSUANT TO THE EXCHANGE OFFER DESCRIBED BELOW
                                _________________

     Peter Kiewit Sons', Inc. ("PKS" or the "Company") has provided you with a
Joint Prospectus dated         , 1995 (the "Prospectus") that describes your
right to exchange the shares of Class B Stock held by you for shares of the
Company's Class D Stock, on the terms and subject to the conditions set forth in
the Prospectus and in the Letter of Transmittal attached to these Instructions.
As described in the Prospectus, the Exchange Offer is being made in connection
with the Spin-off.  THE EXCHANGE OFFER, THE CLASS D STOCK AND THE SPIN-OFF ARE
MORE FULLY DESCRIBED IN THE PROSPECTUS, AND YOU SHOULD CAREFULLY REVIEW THE
PROSPECTUS, INCLUDING THE DESCRIPTIONS THEREIN OF THE CONDITIONS TO THE EXCHANGE
OFFER AND THE SPIN-OFF AND OF PKS'S RIGHT TO ABANDON THE EXCHANGE OFFER OR THE
SPIN-OFF OR BOTH, PRIOR TO MAKING A DECISION REGARDING WHETHER TO EXCHANGE
SHARES OF CLASS B STOCK FOR SHARES OF CLASS D STOCK.  Terms used in these
Instructions and the Letter of Transmittal have the meanings ascribed to them in
the Prospectus.

     THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., OMAHA, NEBRASKA TIME, ON
 , 1995, UNLESS EXTENDED AS DESCRIBED IN THE PROSPECTUS.

     EXCHANGING SHARES OF CLASS B STOCK FOR SHARES OF CLASS D STOCK IS STRICTLY
VOLUNTARY.  IF YOU DO NOT WISH TO EXCHANGE ANY SHARES OF CLASS B STOCK FOR
SHARES OF CLASS D STOCK, DO NOT FILL OUT THE ATTACHED  LETTER OF TRANSMITTAL.
SHARES OF CLASS B STOCK TENDERED PURSUANT TO THE EXCHANGE OFFER MAY BE WITHDRAWN
PRIOR TO THE EXPIRATION DATE OF THE EXCHANGE OFFER ONLY IN THE MANNER DESCRIBED
IN THE PROSPECTUS; OTHERWISE, SUCH TENDERS ARE IRREVOCABLE BY THE TENDERING
STOCKHOLDERS.

     PLEASE READ THE FOLLOWING GENERAL INSTRUCTIONS CAREFULLY BEFORE COMPLETING
THE LETTER OF TRANSMITTAL.  FOR FURTHER INFORMATION OR ASSISTANCE CONCERNING THE
LETTER OF TRANSMITTAL,  CONTACT MICHAEL A. KELLEY,  STOCK REGISTRAR,  PETER
KIEWIT SONS', INC.,  1000 KIEWIT PLAZA,  OMAHA, NEBRASKA  68131,  TELEPHONE
(402) 271-2870;  TELECOPY (402) 271-2965.
                              GENERAL INSTRUCTIONS

1.   GENERAL

     The Letter of Transmittal or a photocopy of it should be properly filled
in, dated and signed, and should be delivered to Michael A. Kelley, Stock
Registrar (the "Stock Registrar"), at the address set forth below:

                    Michael A. Kelley
                    Stock Registrar
                    Peter Kiewit Sons', Inc.
                    1000 Kiewit Plaza
                    Omaha, Nebraska  68131

     YOUR LETTER OF TRANSMITTAL MUST BE ACCOMPANIED BY YOUR STOCK CERTIFICATES
FOR THE CLASS B STOCK BEING TENDERED.  DO NOT SIGN OR OTHERWISE ENDORSE ANY
STOCK CERTIFICATES  TENDERED PURSUANT TO THE EXCHANGE OFFER.  EXECUTION OF THE
LETTER OF TRANSMITTAL  WILL ASSIGN YOUR STOCK TO PKS, SUBJECT TO CONSUMMATION OF
THE EXCHANGE OFFER.

     TO BE EFFECTIVE,  DELIVERY  OF THIS LETTER OF TRANSMITTAL  AND THE
CERTIFICATES  REPRESENTING  SHARES OF CLASS B STOCK YOU WISH TO EXCHANGE  MUST


                                      - i -

<PAGE>

BE MADE PRIOR TO 5:00 P.M., OMAHA,  NEBRASKA TIME, ON THE EXPIRATION  DATE,
WHICH WILL BE             , 1995, UNLESS EXTENDED AS DESCRIBED IN THE
PROSPECTUS.  THE METHOD OF DELIVERY  OF ALL DOCUMENTS TO THE STOCK REGISTRAR  IS
AT YOUR OPTION AND RISK.  IF YOU CHOOSE TO SEND BY MAIL,  IT IS RECOMMENDED THAT
YOU SEND BY REGISTERED  MAIL WITH RETURN RECEIPT REQUESTED,  PROPERLY INSURED.

     IF THE EXCHANGE OFFER IS NOT COMPLETED FOR ANY REASON, YOUR CLASS B STOCK
CERTIFICATES WILL BE RETURNED TO YOU (OR TO YOUR LENDER, IF YOUR CERTIFICATES
ARE PLEDGED TO A LENDER).

2.   SIGNATURES

     The signature on the Letter of Transmittal must correspond exactly to the
name as written on the face of the share certificate(s) sent to the Stock
Registrar.  If there is insufficient space to list all of your share
certificates being submitted to the Stock Registrar or to respond to any other
information, please attach a separate sheet.

3.   LOST CERTIFICATES

     If one or more of your share certificates have been lost or destroyed, you
should contact the Stock Registrar for instructions regarding the relevant
documentation and what supporting evidence to supply.

4.   VALIDITY OF SURRENDER

     A surrender of certificate(s) will not be deemed to have been made until
all irregularities and defects have been cured or waived.  The Company reserves
full discretion to determine whether the documentation with respect to tendered
Class B Stock is complete and generally to resolve all questions relating to
tenders, including the date and hour of receipt of a tender, the propriety of
execution of any document and all other questions regarding the validity or
acceptability of any tender.  The Company reserves the right to reject any
tender not in proper form or to waive any irregularities or conditions.  The
Company's interpretation of the terms and conditions of the Exchange Offer, the
Letter of Transmittal and these Instructions will be final.  All improperly
tendered certificates representing Class B Stock will be returned, unless
irregularities are waived, without cost to the tendering holder thereof.

5.   PARTIAL TENDERS

     If less than all of the shares of Class B Stock which are evidenced by any
share certificate are to be tendered, fill in the number of shares you actually
wish to tender on the line(s) entitled "No. of Shares Tendered" in Box B and the
balance of the shares on the adjacent line(s) entitled "No. of Shares to be
Reissued."  A new certificate(s) for the remainder of the shares of Class B
Stock which were evidenced by your old certificate(s) will be sent to you (or
the applicable lender) as soon as practicable after the consummation of the
Exchange Offer.  All shares evidenced by certificate(s) listed will be deemed to
have been tendered unless otherwise indicated.

     Additional copies of the Letter of Transmittal may be obtained from the
Stock Registrar.


                                     - ii -

<PAGE>

                              LETTER OF TRANSMITTAL

     To accompany certificates representing shares of Class C Stock of Peter
Kiewit Sons', Inc., a Delaware  corporation ("PKS"),  or to authorize the
delivery of pledged Class B Stock to PKS by FirsTier Bank, N.A., when submitted
in connection with the offer by PKS to issue shares of Class D Stock in exchange
for issued and outstanding shares of Class C Stock as described in the Joint
Prospectus dated             , 1995 (the "Prospectus").

Michael A. Kelley, Stock Registrar:

     I hereby tender the certificates listed in Box B below representing shares
of Class B Stock of PKS for exchange for shares of Class D Stock on the terms
and subject to the conditions set forth in the Memorandum and this Letter of
Transmittal.


   BOX A:  NAME AND ADDRESS OF
           REGISTERED HOLDER
- --------------------------------------------------
- --------------------------------------------------
PLEASE TYPE OR PRINT THE NAME OF THE REGISTERED
HOLDER OF THE SHARES OF CLASS C STOCK LISTED IN
BOX C EXACTLY AS SUCH NAME APPEARS ON THE
SURRENDERED SHARE CERTIFICATE(S), ALONG WITH THE
ADDRESS OF THE REGISTERED HOLDER.


Name and Address of Registered Holder (type or
print)


Name:
         -----------------------------------------

Address:
         -----------------------------------------


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


- --------------------------------------------------
                                    (Zip Code)

Telephone Number:
                 ---------------------------------

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


     Upon request, I agree to execute and deliver any additional documents
deemed necessary or desirable by the Stock Registrar to complete the exchange of
the certificates.

     The undersigned requests that the stock certificates for any shares of
Class D Stock to which the undersigned is entitled be registered in the name of,
and be delivered to, the registered holder set forth in Box A above at the
address set forth in Box A above.


                                      - 1 -

<PAGE>

     BOX B: CERTIFICATES TENDERED:  Please list in this Box B (and an
     attached sheet, if necessary) ALL the certificates representing Class
     B Stock you are submitting with this Letter of Transmittal.

<TABLE>
<CAPTION>

- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
    Certificate Enclosed         Certificate No.          No. of Shares        No. of Shares Tendered      No. of Shares to be
                                                                                                                 Reissued
<S>                              <C>                      <C>                  <C>                         <C>
- ------------------------------------------------------------------------------------------------------------------------------------

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

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

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

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

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

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

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

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

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

- ------------------------------------------------------------------------------------------------------------------------------------
                              Total:
- ------------------------------------------------------------------------------------------------------------------------------------

</TABLE>

     The undersigned represents and warrants that the undersigned has full power
and authority to assign and transfer the certificates tendered and has good
title to such certificates, free and clear of all liens, restrictions, charges,
encumbrances, pledges, security interests or other obligations affecting the
assignment or transfer of the certificates, and such certificates are not
subject to any adverse claim (except to the extent so pledged).  All authority
conferred or agreed to be conferred in this Letter of Transmittal shall not be
affected by, and shall survive, the death or incapacity of the undersigned, and
any obligation of the undersigned under this Letter of Transmittal shall be
binding upon successors, assigns, heirs, executors, administrators and legal
representatives of the undersigned.

     THE UNDERSIGNED REPRESENTS AND WARRANTS  THAT THE UNDERSIGNED HAS RECEIVED
AND READ THE PROSPECTUS DATED                    , 1995, OF PETER  KIEWIT
SONS',  INC. AND MFS RELATING  TO THE EXCHANGE OFFER AND SPIN-OFF.


                                   Signed By:_________________________________
                                                      (Signature)


     Date: ___________________     ___________________________________________
                                   Name (Print)


                                      - 2 -


<PAGE>

                                           , 1995

                            PETER KIEWIT SONS', INC.

                     INSTRUCTIONS FOR LETTER OF TRANSMITTAL
                               TO TENDER SHARES OF

                                  CLASS C STOCK

                                  FOR SHARES OF

                                  CLASS D STOCK

                 PURSUANT TO THE EXCHANGE OFFER DESCRIBED BELOW
                                _________________

     Peter Kiewit Sons', Inc. ("PKS" or the "Company") has provided you with a
Joint Prospectus dated         , 1995 (the "Prospectus") that describes your
right to exchange the shares of Class C Stock held by you for shares of the
Company's Class D Stock, on the terms and subject to the conditions set forth in
the Prospectus and in the Letter of Transmittal attached to these Instructions.
As described in the Prospectus, the Exchange Offer is being made in connection
with the Spin-off.  THE EXCHANGE OFFER, THE CLASS D STOCK AND THE SPIN-OFF ARE
MORE FULLY DESCRIBED IN THE PROSPECTUS, AND YOU SHOULD CAREFULLY REVIEW THE
PROSPECTUS, INCLUDING THE DESCRIPTIONS THEREIN OF THE CONDITIONS TO THE EXCHANGE
OFFER AND THE SPIN-OFF AND OF PKS'S RIGHT TO ABANDON THE EXCHANGE OFFER OR THE
SPIN-OFF OR BOTH, PRIOR TO MAKING A DECISION REGARDING WHETHER TO EXCHANGE
SHARES OF CLASS C STOCK FOR SHARES OF CLASS D STOCK.  Terms used in these
Instructions and the Letter of Transmittal have the meanings ascribed to them in
the Prospectus.

     THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., OMAHA, NEBRASKA TIME, ON
 , 1995, UNLESS EXTENDED AS DESCRIBED IN THE PROSPECTUS.

     EXCHANGING SHARES OF CLASS C STOCK FOR SHARES OF CLASS D STOCK IS STRICTLY
VOLUNTARY.  IF YOU DO NOT WISH TO EXCHANGE ANY SHARES OF CLASS C STOCK FOR
SHARES OF CLASS D STOCK, DO NOT FILL OUT THE ATTACHED  LETTER OF TRANSMITTAL.
SHARES OF CLASS C STOCK TENDERED PURSUANT TO THE EXCHANGE OFFER MAY BE WITHDRAWN
PRIOR TO THE EXPIRATION DATE OF THE EXCHANGE OFFER ONLY IN THE MANNER DESCRIBED
IN THE PROSPECTUS; OTHERWISE, SUCH TENDERS ARE IRREVOCABLE BY THE TENDERING
STOCKHOLDERS.

     PLEASE READ THE FOLLOWING GENERAL INSTRUCTIONS CAREFULLY BEFORE COMPLETING
THE LETTER OF TRANSMITTAL.  FOR FURTHER INFORMATION OR ASSISTANCE CONCERNING THE
LETTER OF TRANSMITTAL,  CONTACT MICHAEL A. KELLEY,  STOCK REGISTRAR,  PETER
KIEWIT SONS', INC.,  1000 KIEWIT PLAZA,  OMAHA, NEBRASKA  68131,  TELEPHONE
(402) 271-2870;  TELECOPY (402) 271-2965.
                              GENERAL INSTRUCTIONS

1.   GENERAL

     The Letter of Transmittal or a photocopy of it should be properly filled
in, dated and signed, and should be delivered to Michael A. Kelley, Stock
Registrar (the "Stock Registrar"), at the address set forth below:

                    Michael A. Kelley
                    Stock Registrar
                    Peter Kiewit Sons', Inc.
                    1000 Kiewit Plaza
                    Omaha, Nebraska  68131

     UNLESS YOU ARE DIRECTING FIRSTIER BANK, N.A. TO DELIVER PLEDGED
CERTIFICATES DIRECTLY TO THE STOCK REGISTRAR AS DESCRIBED BELOW, YOUR LETTER OF
TRANSMITTAL MUST BE ACCOMPANIED BY YOUR STOCK CERTIFICATES FOR THE CLASS C STOCK
BEING TENDERED.  DO NOT SIGN OR OTHERWISE ENDORSE ANY STOCK CERTIFICATES
TENDERED PURSUANT TO THE EXCHANGE OFFER.  EXECUTION OF THE


                                     - i -

<PAGE>

LETTER OF TRANSMITTAL  WILL ASSIGN YOUR STOCK TO PKS, SUBJECT TO CONSUMMATION OF
THE EXCHANGE OFFER.  If any certificates for your  Class C Stock being tendered
have been pledged to FirsTier Bank, N.A., you must so indicate in Box C, and
upon delivery by you to PKS of an executed Letter of Transmittal, PKS and
FirsTier Bank, N.A. will be authorized to arrange for (i) the delivery of
pledged Class C Stock to PKS, and (ii) the delivery to FirsTier Bank, N.A. of
certificates representing the shares of Class D Stock to which you are entitled
upon exchange of your Class C Stock.

     If any of your Class C Stock has been pledged to a lending institution
OTHER THAN FIRSTIER, you must complete Box B and arrange with such lending
institution for delivery to PKS of the certificates for the pledged Class C
Stock, together with the Letter of Transmittal.  EVEN IF YOU DO NOT DESIGNATE A
LENDING INSTITUTION IN BOX B OR BOX C, PKS MAY DELIVER CERTIFICATES DIRECTLY TO
A LENDING INSTITUTION IF PKS BELIEVES IN GOOD FAITH THAT SUCH LENDING
INSTITUTION IS ENTITLED TO RECEIVE SUCH CERTIFICATES UNDER A BORROWING
ARRANGEMENT WITH YOU.

     TO BE EFFECTIVE,  DELIVERY  OF THIS LETTER OF TRANSMITTAL  AND THE
CERTIFICATES  REPRESENTING  SHARES OF CLASS C STOCK YOU WISH TO EXCHANGE  MUST
BE MADE PRIOR TO 5:00 P.M., OMAHA,  NEBRASKA TIME, ON THE EXPIRATION  DATE,
WHICH WILL BE             , 1995, UNLESS EXTENDED AS DESCRIBED IN THE
PROSPECTUS.  THE METHOD OF DELIVERY  OF ALL DOCUMENTS TO THE STOCK REGISTRAR  IS
AT YOUR OPTION AND RISK.  IF YOU CHOOSE TO SEND BY MAIL,  IT IS RECOMMENDED THAT
YOU SEND BY REGISTERED  MAIL WITH RETURN RECEIPT REQUESTED,  PROPERLY INSURED.

     IF THE EXCHANGE OFFER IS NOT COMPLETED FOR ANY REASON, YOUR CLASS C STOCK
CERTIFICATES WILL BE RETURNED TO YOU (OR TO YOUR LENDER, IF YOUR CERTIFICATES
ARE PLEDGED TO A LENDER).

2.   SIGNATURES

     The signature on the Letter of Transmittal must correspond exactly to the
name as written on the face of the share certificate(s) sent to the Stock
Registrar.  If there is insufficient space to list all of your share
certificates being submitted to the Stock Registrar or to respond to any other
information, please attach a separate sheet.

3.   LOST CERTIFICATES

     If one or more of your share certificates have been lost or destroyed, you
should contact the Stock Registrar for instructions regarding the relevant
documentation and what supporting evidence to supply.

4.   VALIDITY OF SURRENDER

     A surrender of certificate(s) will not be deemed to have been made until
all irregularities and defects have been cured or waived.  The Company reserves
full discretion to determine whether the documentation with respect to tendered
Class C Stock is complete and generally to resolve all questions relating to
tenders, including the date and hour of receipt of a tender, the propriety of
execution of any document and all other questions regarding the validity or
acceptability of any tender.  The Company reserves the right to reject any
tender not in proper form or to waive any irregularities or conditions.  The
Company's interpretation of the terms and conditions of the Exchange Offer, the
Letter of Transmittal and these Instructions will be final.  All improperly
tendered certificates representing Class C Stock will be returned, unless
irregularities are waived, without cost to the tendering holder thereof.

5.   PARTIAL TENDERS

     If less than all of the shares of Class C Stock which are evidenced by any
share certificate are to be tendered, fill in the number of shares you actually
wish to tender on the line(s) entitled "No. of Shares Tendered" in Box C and the
balance of the shares on the adjacent line(s) entitled "No. of Shares to be
Reissued."  A new certificate(s) for the remainder of the shares of Class C
Stock which were evidenced by your old certificate(s) will be sent to you (or
the applicable lender) as soon as practicable after the consummation of the
Exchange Offer.  All shares evidenced by certificate(s) listed will be deemed to
have been tendered unless otherwise indicated.

     Additional copies of the Letter of Transmittal may be obtained from the
Stock Registrar.


                                     - ii -

<PAGE>

                              LETTER OF TRANSMITTAL

     To accompany certificates representing shares of Class C Stock of Peter
Kiewit Sons', Inc., a Delaware  corporation ("PKS"),  or to authorize the
delivery of pledged Class C Stock to PKS by FirsTier Bank, N.A., when submitted
in connection with the offer by PKS to issue shares of Class D Stock in exchange
for issued and outstanding shares of Class C Stock as described in the Joint
Prospectus dated             , 1995 (the "Prospectus").

Michael A. Kelley, Stock Registrar:

     I hereby tender the certificates listed in Box C below representing shares
of Class C Stock of PKS for exchange for shares of Class D Stock on the terms
and subject to the conditions set forth in the Memorandum and this Letter of
Transmittal.


   BOX A:  NAME AND ADDRESS OF                  BOX B:  SPECIAL DELIVERY
           REGISTERED HOLDER                            INSTRUCTIONS
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
PLEASE TYPE OR PRINT THE NAME OF THE    FILL IN ONLY IF YOUR CERTIFICATES ARE
REGISTERED HOLDER OF THE SHARES OF      TO BE SENT TO A LENDING INSTITUTION,
CLASS C STOCK LISTED IN BOX C EXACTLY   OTHER THAN FIRSTIER, TO WHICH YOUR
AS SUCH NAME APPEARS ON THE             CLASS C STOCK IS PLEDGED.
SURRENDERED SHARE CERTIFICATE(S),
ALONG WITH THE ADDRESS OF THE
REGISTERED HOLDER.                      These Special Delivery Instructions
                                        Cover Class D Stock Issuable in
                                        Respect of the Following Number of
Name and Address of Registered Holder   Shares of Class C Stock:
(type or print)

                                        ------------------------
Name:
        ------------------------------            Mail or deliver to:

Address:                                Name
        ------------------------------       ---------------------------------
                                                    (Please Print)

- --------------------------------------  Address
                                                ------------------------------

- --------------------------------------
                                        --------------------------------------
                      (Zip Code)

Telephone Number:                       --------------------------------------
                  --------------------                      (Zip Code)
                                        Lender
                                        Contact person:
                                                         ---------------------

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


     Upon request, I agree to execute and deliver any additional documents
deemed necessary or desirable by the Stock Registrar to complete the exchange of
the certificates.

     Except as otherwise indicated in Box B above or Box C below, the
undersigned requests that the stock certificates for any shares of Class D Stock
to which the undersigned is entitled be registered in the name of, and be
delivered to, the registered holder set forth in Box A above at the address set
forth in Box A above, subject to the right of PKS to deliver such certificates
directly to a lending institution (whether or not such lending institution is
set forth in Box B or Box C) if PKS believes in good faith that such lending
institution is entitled to receive such certificates under a borrowing
arrangement with the undersigned.


                                      - 1 -

<PAGE>

     BOX C: CERTIFICATES TENDERED:  Please list in this Box C (and an
     attached sheet, if necessary) ALL the certificates representing Class
     C Stock you are submitting with this Letter of Transmittal or, if such
     certificates are pledged to FirsTier, the certificates you are
     authorizing to be surrendered to PKS by FirsTier.  PKS will send to
     FirsTier certificates for Class D Stock issuable in exchange for Class
     C Stock pledged to FirsTier as indicated in this Box C.

<TABLE>
<CAPTION>

- ------------------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------------
           Check the appropriate box:             Certificate No.     No. of Shares        No. of Shares      No. of Shares to be
- -----------------------------------------------                                              Tendered              Reissued
Certificate          Certificate Held By
 Enclosed            FirsTier Bank, N.A.
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                  <C>                          <C>                 <C>                 <C>                <C>


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

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

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

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

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

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

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

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

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

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

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

                                                 Total:

</TABLE>

     The undersigned represents and warrants that the undersigned has full power
and authority to assign and transfer the certificates tendered and has good
title to such certificates, free and clear (except to the extent pledged to
FirsTier or to a lending institution named in Box B above) of all liens,
restrictions, charges, encumbrances, pledges, security interests or other
obligations affecting the assignment or transfer of the certificates, and such
certificates are not subject to any adverse claim (except to the extent so
pledged).  All authority conferred or agreed to be conferred in this Letter of
Transmittal shall not be affected by, and shall survive, the death or incapacity
of the undersigned, and any obligation of the undersigned under this Letter of
Transmittal shall be binding upon successors, assigns, heirs, executors,
administrators and legal representatives of the undersigned.

     THE UNDERSIGNED REPRESENTS AND WARRANTS  THAT THE UNDERSIGNED HAS RECEIVED
AND READ THE PROSPECTUS DATED                    , 1995, OF PETER  KIEWIT
SONS',  INC. AND MFS RELATING  TO THE EXCHANGE OFFER AND SPIN-OFF.


                                   Signed By:_________________________________
                                                     (Signature)


     Date: ___________________     ___________________________________________
                                   Name (Print)


                                      - 2 -


<PAGE>

                                                , 1995

                            PETER KIEWIT SONS', INC.

                     INSTRUCTIONS FOR LETTER OF TRANSMITTAL
                                   TO TENDER

                       1990 SERIES CONVERTIBLE  DEBENTURES
                              DUE OCTOBER 31, 2000

                       1991 SERIES CONVERTIBLE  DEBENTURES
                              DUE OCTOBER 31, 2001

                                     AND/OR

                         1993 SERIES CLASS D CONVERTIBLE
            DEBENTURES DUE OCTOBER 31, 2003 (TOGETHER,  "DEBENTURES")

                                  FOR SHARES OF

                       CLASS C STOCK AND /OR CLASS D STOCK

                 PURSUANT TO THE EXCHANGE OFFER DESCRIBED BELOW
                                _________________

     Peter Kiewit Sons', Inc. ("PKS" or the "Company") has provided you with an
Joint Prospectus dated          ,  1995 (the "Prospectus") that describes your
right to exchange the Debentures owned by you for shares of the Company's Class
C Stock and/or Class D Stock, on the terms and subject to the conditions set
forth in the Prospectus and in the Letter of Transmittal attached to these
Instructions.  As described in the Prospectus, the Exchange Offer is being made
in connection with the Spin-off.  THE EXCHANGE OFFER, THE CLASS C  STOCK, THE
CLASS D STOCK AND THE SPIN-OFF ARE MORE FULLY DESCRIBED IN THE PROSPECTUS, AND
YOU SHOULD CAREFULLY REVIEW THE PROSPECTUS, INCLUDING THE DESCRIPTIONS THEREIN
OF THE CONDITIONS TO THE EXCHANGE OFFER AND THE SPIN-OFF AND OF PKS'S RIGHT TO
ABANDON THE EXCHANGE OFFER OR THE SPIN-OFF OR BOTH, PRIOR TO MAKING A DECISION
REGARDING WHETHER TO EXCHANGE DEBENTURES FOR SHARES OF CLASS D STOCK.  Terms
used in these Instructions and the Letter of Transmittal have the meanings
ascribed to them in the Prospectus.

     THE EXCHANGE OFFER WILL EXPIRE AT 5:00 P.M., OMAHA, NEBRASKA TIME, ON
 , 1995, UNLESS EXTENDED AS DESCRIBED IN THE PROSPECTUS.

     THE BOARD OF DIRECTORS OF THE COMPANY RECOMMENDS THAT HOLDERS OF DEBENTURES
PARTICIPATE IN THE EXCHANGE OFFER, FOR THE REASONS DESCRIBED IN THE PROSPECTUS
AT "RISK FACTORS -- CERTAIN CONSEQUENCES OF DECISION NOT TO EXCHANGE".

     PLEASE READ THE FOLLOWING GENERAL INSTRUCTIONS CAREFULLY BEFORE COMPLETING
THE LETTER OF TRANSMITTAL.  FOR FURTHER  INFORMATION  OR  ASSISTANCE  CONCERNING
THE  LETTER  OF TRANSMITTAL,  CONTACT  MICHAEL  A.  KELLEY,  STOCK  REGISTRAR,
PETER  KIEWIT  SONS',  INC.,  1000  KIEWIT  PLAZA,  OMAHA,  NEBRASKA  68131,
TELEPHONE  (402) 271-2870; TELECOPY (402) 271-2965.

                              GENERAL INSTRUCTIONS

1.   GENERAL

     The Letter of Transmittal or a photocopy of it should be properly filled
in, dated and signed, and should be delivered to Michael A. Kelley, Stock
Registrar (the "Stock Registrar"), at the address set forth below:


                                      - i -

<PAGE>

                         Michael A. Kelley
                         Stock Registrar
                         Peter Kiewit Sons', Inc.
                         1000 Kiewit Plaza
                         Omaha, Nebraska  68131

     If your Debentures have been pledged to FirsTier Bank, N.A. ("FirsTier") or
any other lending institution, you must complete Box B, and upon delivery by you
to PKS of an executed Letter of Transmittal, PKS and the lending institution
will be authorized to arrange for (i) the delivery of pledged Debentures to PKS,
and (ii) the delivery to the lending institution of certificates representing
the shares of Class C Stock and/or Class D Stock to which you are entitled upon
exchange of your Debentures.  If your Debentures are not pledged to a lending
institution, your Letter of Transmittal must be accompanied by your certificates
for the Debentures being tendered.

     TO BE EFFECTIVE,  DELIVERY  OF THIS LETTER  OF TRANSMITTAL  AND THE
CERTIFICATES  REPRESENTING  DEBENTURES  YOU  WISH  TO  EXCHANGE  MUST  BE  MADE
PRIOR TO 5:00 P.M.,  OMAHA,  NEBRASKA  TIME, ON  THE  EXPIRATION  DATE,  WHICH
WILL BE                , 1995,  UNLESS EXTENDED AS DESCRIBED IN THE PROSPECTUS.
THE  METHOD OF DELIVERY  OF ALL DOCUMENTS TO THE STOCK REGISTRAR IS AT YOUR
OPTION AND RISK.  IF YOU CHOOSE TO SEND BY MAIL, IT IS RECOMMENDED THAT YOU SEND
BY REGISTERED MAIL WITH RETURN RECEIPT REQUESTED,  PROPERLY INSURED.

     IF THE EXCHANGE OFFER IS NOT COMPLETED FOR ANY REASON, YOUR DEBENTURE
CERTIFICATES WILL BE RETURNED TO YOU (OR YOUR LENDER, IF THE DEBENTURE
CERTIFICATES ARE PLEDGED TO A LENDER).

2.   SIGNATURES

     The signature on the Letter of Transmittal must correspond exactly to the
name as written on the face of the Debenture certificate(s) sent to the Stock
Registrar.

3.   LOST CERTIFICATES

     If one or more of your Debenture certificates have been lost or destroyed,
you should contact the Stock Registrar for instructions regarding the relevant
documentation and what supporting evidence to supply.

4.   VALIDITY OF SURRENDER

     A surrender of certificate(s) will not be deemed to have been made until
all irregularities and defects have been cured or waived.  The Company reserves
full discretion to determine whether the documentation with respect to tendered
Debentures is complete and generally to resolve all questions relating to
tenders, including the date and hour of receipt of a tender, the propriety of
execution of any document and all other questions regarding the validity or
acceptability of any tender.  The Company reserves the right to reject any
tender not in proper form or to waive any irregularities or conditions.  The
Company's interpretation of the terms and conditions of the Exchange Offer, the
Letter of Transmittal and these Instructions will be final.  All improperly
tendered certificates representing Debentures will be returned, unless
irregularities are waived, without cost to the tendering holder thereof.

5.   NO PARTIAL TENDERS

     A holder of a Debentures may not tender fewer than all Debentures held or
less than the full principal amount of each Debenture in the Exchange Offer.

     Additional copies of the Letter of Transmittal may be obtained from the
Stock Registrar.


                                     - ii -

<PAGE>

                              LETTER OF TRANSMITTAL

     To accompany certificates representing 1990 Series Convertible Debentures
due October 31, 2000, 1991 Series Convertible Debentures due October 31, 2001
and/or 1993 Series Class D Convertible Debenture due October 31, 2003
("Debenture"), of Peter Kiewit Sons', Inc., a Delaware corporation ("PKS"), or
to authorize the delivery of a Debenture certificates to PKS by a lending
institution to which the Debenture(s) has been pledged, when surrendered in
connection with the offer by PKS to issue shares of Class C Stock and/or Class D
Stock in exchange for issued and outstanding Debentures as described in the
Joint Prospectus dated                          , 1995 (the "Prospectus").

Michael A. Kelley, Stock Registrar:

     I hereby tender for exchange my Debenture(s) of PKS for shares of Class C
Stock and Class D Stock on the terms and subject to the conditions set forth in
the Prospectus and this Letter of Transmittal.

 BOX A:  NAME AND ADDRESS OF             BOX B:  SPECIAL DELIVERY
         REGISTERED HOLDER                       INSTRUCTIONS
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
PLEASE TYPE OR PRINT THE NAME OF THE    FILL IN ONLY IF YOUR DEBENTURE(S) ARE
REGISTERED HOLDER OF THE DEBENTURE(S)   PLEDGED TO A LENDING INSTITUTION (IN
EXACTLY AS SUCH NAME APPEARS ON THE     WHICH CASE YOUR STOCK CERTIFICATES
SURRENDERED DEBENTURE CERTIFICATE,      WILL BE SENT TO SUCH LENDING
ALONG WITH THE ADDRESS OF THE           INSTITUTION).
REGISTERED HOLDER.
                                        Check the following box if your
                                        Debenture(s) are pledged to FirsTier:
Name and Address of Registered Holder   / /
(type or print)
                                        - OR -

Name:                                   Provide the following information for
        ------------------------------  any lending institution other than
                                        FirsTier:
Address:
        ------------------------------  Name
                                             ---------------------------------
                                                    (Please Print)
- --------------------------------------
                                        Address
                                                ------------------------------
- --------------------------------------

(Zip Code)                              --------------------------------------

Telephone Number:
                                        --------------------------------------
- ----------------------                                         (Zip Code)
                                        Lender
                                        Contact person:
                                                         ---------------------

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

     Upon request, I agree to execute and deliver any additional documents
deemed necessary or desirable by the Stock Registrar to complete the exchange of
the certificates.

     Except as otherwise indicated in Box B above, the undersigned requests that
the certificates for any shares Class C Stock and/or of Class D Stock to which
the undersigned is entitled be registered in the name of, and be delivered to,
the registered holder set forth in Box A above at the address set forth in Box A
above.


                                      - 1 -

<PAGE>

     The undersigned represents and warrants that the undersigned has full power
and authority to assign and transfer the certificates tendered and has good
title to such certificates, free and clear (except to the extent pledged to a
lending institution named in Box B above) of all liens, restrictions, charges,
encumbrances, pledges, security interests or other obligations affecting the
assignment or transfer of the certificates, and such certificates are not
subject to any adverse claim (except to the extent so pledged).  All authority
conferred or agreed to be conferred in this Letter of Transmittal shall not be
affected by, and shall survive, the death or incapacity of the undersigned, and
any obligation of the undersigned under this Letter of Transmittal shall be
binding upon successors, assigns, heirs, executors, administrators and legal
representatives of the undersigned.

     THE UNDERSIGNED REPRESENTS AND WARRANTS THAT THE UNDERSIGNED HAS RECEIVED
AND READ THE JOINT PROSPECTUS DATED                , 1995, OF PETER KIEWIT
SONS', INC. AND MFS RELATING TO THE EXCHANGE OFFER AND SPIN-OFF.

                                   Signed By:______________________________
                                             (signature)

Date: ___________________          ________________________________________
                                   Name (Print)


                                      - 2 -




<PAGE>


April 27, 1995


Board of Directors
Peter Kiewit Sons', Inc.
1000 Kiewit Plaza
Omaha, NE 68131


          Re:  Exchange Offer by Peter Kiewit Sons', Inc.

Gentlemen:

     I understand that Peter Kiewit Sons', Inc. ("PKS") is contemplating an
offering (the "Exchange Offer") of its Class D Diversified Group Convertible
Exchangeable Common Stock, par value $0.0625 ("Class D Stock"), in exchange for
its Class C Construction & Mining Group Restricted Redeemable Convertible
Exchangeable Common Stock, par value $0.0625 ("Class C Stock"), in anticipation
of a possible spin-off distribution to the holders of Class D Stock of PKS'
entire ownership interest in MFS Communications Company, Inc., as described in
the Form 10-K of PKS dated March 31, 1995 (which PKS has provided to me).  You
have asked me to indicate whether, if the Exchange Offer occurs, I would tender
shares of Class C Stock held or controlled by me or my family members to PKS in
exchange for Class D Stock pursuant to the Exchange Offer.

     I hereby agree that, if the Exchange Offer occurs, I would not tender such
Class C Stock pursuant to the Exchange Offer.

     I understand that you will rely upon this information in making certain
decisions regarding the Exchange Offer, and that my tender intentions will be
disclosed to PKS shareholders in the offering document provided to PKS
shareholders in connection with the Exchange Offer.  I also understand that
my agreement applies only to the Exchange Offer, and that I will have the right
to convert Class C Stock into Class D Stock during any subsequent conversion
period provided in PKS' Certificate of Incorporation.

                                        Sincerely,




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