KIEWIT PETER SONS INC
S-4, 1995-07-11
METAL CANS
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<PAGE>
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 11, 1995

                                                      REGISTRATION NO. 33-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                           --------------------------

                                    FORM S-4
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------

                            PETER KIEWIT SONS', INC.
             (Exact name of registrant as specified in its charter)

<TABLE>
<S>                              <C>                              <C>
           DELAWARE                                                      47-0210602
 (State or other jurisdiction      1221, 161, 162, 4813, 4911,        (I.R.S. Employer
                                              7374
       of incorporation)          (Primary Standard Industrial      Identification No.)
                                  Classification Code Numbers)
</TABLE>

<TABLE>
<S>                                                 <C>
                1000 KIEWIT PLAZA                                MATTHEW J. JOHNSON, ESQ.
              OMAHA, NEBRASKA 68131                               VICE PRESIDENT - LEGAL
                  (402) 342-2052                                 PETER KIEWIT SONS', INC.
   (Address, including zip code, and telephone                      1000 KIEWIT PLAZA
   number, including area code, of registrant's                   OMAHA, NEBRASKA 68131
           principal executive offices)                               (402) 342-2052
                                                    (Name, address, including zip code, and telephone
                                                    number, including area code, of agent for service)
</TABLE>

                        MFS COMMUNICATIONS COMPANY, INC.

<TABLE>
<S>                          <C>                             <C>
         DELAWARE                         4813                      47-0714388
      (State or other         (Primary Standard Industrial       (I.R.S. Employer
       jurisdiction
     of incorporation)        Classification Code Numbers)     Identification No.)
</TABLE>

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

<TABLE>
<S>                                                 <C>
          3555 FARNAM STREET, SUITE 200                         TERRENCE J. FERGUSON, ESQ.
              OMAHA, NEBRASKA 68131                       SENIOR VICE PRESIDENT, GENERAL COUNSEL
                  (402) 977-5300                                      AND SECRETARY
   (Address, including zip code, and telephone               MFS COMMUNICATIONS COMPANY, INC.
   number, including area code, of registrant's               3555 FARNAM STREET, SUITE 200
           principal executive offices)                           OMAHA, NEBRASKA 68131
                                                                      (402) 977-5300
                                                    (Name, address, including zip code, and telephone
                                                    number, including area code, of agent for service)
</TABLE>

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

                                   COPIES TO:

<TABLE>
<S>                                                 <C>
              JAMES D. DARROW, ESQ.                              JOHN S. D'ALIMONTE, ESQ.
           SUTHERLAND, ASBILL & BRENNAN                          STEVEN J. GARTNER, ESQ.
           1275 PENNSYLVANIA AVE., N.W.                          WILLKIE FARR & GALLAGHER
              WASHINGTON, D.C. 20004                               ONE CITICORP CENTER
                  (202) 383-0100                                   153 EAST 53RD STREET
                                                                 NEW YORK, NEW YORK 10022
                                                                      (212) 821-8000
</TABLE>

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

        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
AS SOON AS PRACTICABLE AFTER THE EFFECTIVE DATE OF THIS REGISTRATION STATEMENT.

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
    If  the  securities  being registered  on  this  Form are  being  offered in
connection with the formation of a holding company and there is compliance  with
General Instruction G, check the following box. / /
                           --------------------------

                        CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
                                                    PROPOSED MAXIMUM    PROPOSED MAXIMUM
     TITLE OF EACH CLASS OF          AMOUNT TO       OFFERING PRICE        AGGREGATE           AMOUNT OF
  SECURITIES TO BE REGISTERED      BE REGISTERED       PER SHARE         OFFERING PRICE     REGISTRATION FEE
<S>                               <C>               <C>               <C>                   <C>
Peter Kiewit Sons', Inc.               60,100          $21.17(1)         $1,272,500(2)            $439
Class C Construction & Mining
Group Restricted Redeemable
Convertible Exchangeable Common
Stock, $0.0625 par value
Peter Kiewit Sons', Inc.            2,152,183(3)       $59.12(1)        $127,227,500(2)         $43,872
Class D Diversified Group
Restricted Redeemable
Convertible Exchangeable Common
Stock, $0.0625 par value
MFS Communications                 40,091,664(5)       29.375(4)       $1,177,692,630(4)      $406,101(5)
Company, Inc. Common Stock, $.01
par value
MFS Communications                 15,000,000(5)        $1.00(6)         $15,000,000(6)        $5,173(5)
Company, Inc. Series B
Convertible Preferred Stock,
$.01 par value
MFS Communications                 347,822(5)(7)           --                  --                  --
Company, Inc. Common Stock, $.01
par value
<FN>
(1)  Determined  pursuant to Rule 457(f)(2) based on weighted average book value
     of securities to be received by Peter Kiewit Sons', Inc. in exchange  offer
     per share of stock to be registered.
(2)  Determined  pursuant to  Rule 457(f)(2)  based on  aggregate book  value of
     securities to be received by Peter Kiewit Sons', Inc. in exchange offer per
     share of stock to be registered.
(3)  Based on an assumed  exchange of all of  the convertible debentures and  an
     aggregate  of 5,000,000 shares of Class B  Stock and Class C Stock of Peter
     Kiewit Sons', Inc.
(4)  Estimated solely for purposes of determining the registration fee  pursuant
     to Rule 457(f) based upon the high and low sales prices of the Common Stock
     of MFS Communications Company, Inc. as reported by the National Association
     of Securities Dealers, Inc.'s National Market System on June 9, 1995.
(5)  In   addition  to  the  securities  to   be  registered  pursuant  to  this
     Registration Statement, the offering contemplated by the Prospectus forming
     a part  of  this  Registration  Statement also  includes  an  aggregate  of
     40,439,490  shares  of  Common  Stock,  par value  $.01  per  share  of MFS
     Communications Company, Inc. and 15,000,000 shares of Series B  Convertible
     Preferred  Stock, par value  $.01 per share  of MFS Communications Company,
     Inc. that are covered by Registration Statement No. 33-93504. A filing  fee
     aggregating  $411,274  was previously  paid  with the  earlier registration
     statement relating to such 40,439,490 shares of Common Stock par value $.01
     per share and 15,000,000 shares of Series B Convertible Preferred Stock par
     value $.01 per share.
(6)  Estimated based upon  the book value  per share of  $1.00 pursuant to  Rule
     457(f).
(7)  Represents  shares  of Common  Stock  of MFS  Communications  Company, Inc.
     issuable upon  conversion  of the  Series  B Convertible  Preferred  Stock.
     Pursuant  to the provisions  of Rule 457(i) a  separate registration fee is
     not payable.
</TABLE>

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

    THE REGISTRANTS HEREBY  AMEND THIS  REGISTRATION STATEMENT ON  SUCH DATE  OR
DATES  AS MAY  BE NECESSARY  TO DELAY ITS  EFFECTIVE DATE  UNTIL THE REGISTRANTS
SHALL FILE A FURTHER AMENDMENT  THAT SPECIFICALLY STATES THAT THIS  REGISTRATION
STATEMENT  SHALL THEREAFTER BECOME EFFECTIVE IN  ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT  OF 1933 OR  UNTIL THIS REGISTRATION  STATEMENT SHALL  BECOME
EFFECTIVE  ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.

                       STATEMENT PURSUANT TO RULE 429(B)

    THE PROSPECTUS  CONTAINED  IN  THIS REGISTRATION  STATEMENT  IS  A  COMBINED
PROSPECTUS  WHICH ALSO COVERS SHARES OF COMMON  STOCK AND PREFERRED STOCK OF MFS
COMMUNICATIONS COMPANY,  INC. COVERED  BY REGISTRATION  STATEMENT NO.  33-93504.
THIS  REGISTRATION STATEMENT ALSO CONSTITUTES PRE-EFFECTIVE AMENDMENT NO. 1 WITH
RESPECT TO REGISTRATION STATEMENT NO. 33-93504.
<PAGE>
                             CROSS-REFERENCE SHEET
                   PURSUANT TO ITEM 501(B) OF REGULATION S-K

<TABLE>
<CAPTION>
ITEM NUMBER AND CAPTION                                         LOCATION IN PROSPECTUS
- ---------------------------------------------------  ---------------------------------------------
           A. INFORMATION ABOUT THE TRANSACTION
<C>        <S>                                       <C>
       1.  Forepart of Registration Statement and
            Outside Front Cover Page of
            Prospectus.............................  Outside Front Cover Page of Prospectus
       2.  Inside Front and Outside Back Cover
            Pages of Prospectus....................  Inside Front Cover Page of Prospectus;
                                                      Available Information; Incorporation of
                                                      Certain Documents by Reference; Table of
                                                      Contents
       3.  Risk Factors, Ratio of Earnings to Fixed
            Charges and Other Information..........  Prospectus Summary; Risk Factors
       4.  Terms of the Transaction................  Prospectus Summary; Overview; The Exchange
                                                      Offer; The Spin-Off; Description of
                                                      Securities
       5.  Pro Forma Financial Information.........  Selected Historical and Pro Forma Financial
                                                      Data; Pro Forma Financial Information of PKS
       6.  Material Contacts with the Company Being
            Acquired...............................  Certain Transactions
       7.  Additional Information Required for
            Reoffering by Persons and Parties
            Deemed to be Underwriters..............  Not Applicable
       8.  Interests of Named Experts and Counsel..  Not Applicable
       9.  Disclosure of Commission Position on
            Indemnification for Securities Act
            Liabilities............................  Not Applicable
           B. INFORMATION ABOUT THE REGISTRANT
      10.  Information with Respect to S-3
            Registrants............................  Available Information; Incorporation of
                                                     Certain Documents by Reference; Recent
                                                      Developments
      11.  Incorporation of Certain Information by
            Reference..............................  Incorporation of Certain Documents by
                                                      Reference
      12.  Information with Respect to S-2 or S-3
            Registrants............................  Not Applicable
      13.  Incorporation of Certain Information by
            Reference..............................  Not Applicable
      14.  Information With Respect to Registrants
            Other Than S-3 or S-2 Registrants......  Not Applicable
           C. INFORMATION ABOUT THE COMPANY BEING ACQUIRED
      15.  Information with Respect to S-3
            Companies..............................  Available Information; Incorporation of
                                                     Certain Documents by Reference; Recent
                                                      Developments
      16.  Information With Respect to S-2 or S-3
            Companies..............................  Not Applicable
</TABLE>
<PAGE>
<TABLE>
<CAPTION>
ITEM NUMBER AND CAPTION                                         LOCATION IN PROSPECTUS
- ---------------------------------------------------  ---------------------------------------------
<C>        <S>                                       <C>
      17.  Information With Respect to Companies
            Other Than S-3 or S-2 Companies........  Not Applicable
           D. VOTING AND MANAGEMENT INFORMATION
      18.  Information if Proxies, Consents or
            Authorizations are to be Solicited.....  Not Applicable
      19.  Information if Proxies, Consents or
            Authorizations are not to be Solicited
            or in an Exchange Offer................  Incorporation of Certain Documents by
                                                      Reference; Certain Transactions
</TABLE>
<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR  TO THE TIME THE REGISTRATION STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE AN  OFFER  TO  SELL  OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN  ANY STATE IN WHICH SUCH OFFER,  SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>
                      SUBJECT TO COMPLETION JULY 11, 1995

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              , 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
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.

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

    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             , 1995.

                                             (COVER CONTINUED ON FOLLOWING PAGE)

                                       ii
<PAGE>
    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 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

                                      iii
<PAGE>
(CONTINUED FROM PREVIOUS PAGE)
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
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."

    The  Spin-off and the Exchange Offer are both subject to the approval of the
MFS Recapitalization (as defined  herein) by a favorable  vote of a majority  of
the  holders of  MFS Common  Stock voting  at the  MFS 1995  annual stockholders
meeting. See "Overview -- The MFS Recapitalization" and the "The Exchange  Offer
- --  Conditions to the Exchange  Offer." IF SUCH FAVORABLE  VOTE IS NOT RECEIVED,
THE EXCHANGE OFFER WILL BE ABANDONED, AND THE SPIN-OFF WILL NOT OCCUR.  FURTHER,
PKS RESERVES THE RIGHT TO ABANDON THE EXCHANGE OFFER, OR BOTH THE EXCHANGE OFFER
AND THE SPIN-OFF, IF THE PKS BOARD OF DIRECTORS DETERMINES AT ANY TIME THAT SUCH
ABANDONMENT  WOULD BE IN THE BEST INTEREST  OF PKS AND ITS STOCKHOLDERS, AND PKS
WILL ABANDON THE EXCHANGE OFFER IF  IT ABANDONS THE SPIN-OFF. See "The  Exchange
Offer  -- Right of PKS to Extend, Abandon  or Modify the Exchange Offer or Defer
Acceptance of Tendered Exchangeable Securities" and "The Spin-off --  Conditions
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 EXCHANGE OFFER  AND 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 OR DEFER ACCEPTANCE OF TENDERED EXCHANGEABLE SECURITIES" AND "THE
SPIN-OFF -- CONDITIONS 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                  , 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 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)

                                       iv
<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 the
Registration Statement  on Form  S-4 and  exhibits relating  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"). Reference is made to such  Registration
Statement  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;

    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; and

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

    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;

                                       v
<PAGE>
    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.  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

    5.  The Preliminary Proxy Statement of MFS filed with the Commission on June
       23, 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
           ,  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).

                                       vi
<PAGE>
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
PROSPECTUS SUMMARY....................................................................          1
<S>                                                                                     <C>
RISK FACTORS..........................................................................         12
  RISK FACTORS RELATING TO THE EXCHANGE OFFER, SPIN-OFF AND PKS SECURITIES............         12
  RISK FACTORS RELATING TO MFS........................................................         22
OVERVIEW..............................................................................         26
SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA......................................         37
THE EXCHANGE OFFER....................................................................         42
THE SPIN-OFF..........................................................................         48
CERTAIN TRANSACTIONS..................................................................         54
RECENT DEVELOPMENTS...................................................................         57
DESCRIPTION OF SECURITIES.............................................................         60
LEGAL MATTERS.........................................................................         70
EXPERTS...............................................................................         70
CERTAIN DEFINITIONS...................................................................         70
INDEX TO FINANCIAL STATEMENTS.........................................................        F-1
</TABLE>

                                       v
<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  is  engaged  in  the  following  businesses:
construction, mining, data management, telecommunications and energy  production
facilities.

                        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. ("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 $63.9 million for the  three
months ended March 31, 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 firms that incorporate MFS's services in their own services.

    TELECOMMUNICATIONS SERVICES

    - MFS Telecom provides  dedicated circuits  for critical  telecommunications
      needs  and, where authorized, 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.

    - 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 provides  business communications  services between and
      within several  international  business  centers.  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 selected international business centers.

                                       1
<PAGE>
    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

    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 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. The MFS Recapitalization has been
approved  by the MFS Board  of Directors, and by a  special committee of the MFS
Board  of  Directors   comprised  solely  of   independent  directors  of   MFS.
Consummation  of the MFS Recapitalization is subject  to the approval of the MFS
Recapitalization by  the holders  of MFS  Common Stock  at the  MFS 1995  annual
stockholders  meeting, presently expected to be held on [               ], 1995.
In connection with obtaining  approval of the holders  of MFS Common Stock,  PKS
has  agreed to vote 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 may be  outstanding)
present   in  person  or   by  proxy  at   the  meeting  vote.   Thus,  the  MFS
Recapitalization will  be approved  only  if supported  by  a majority  of  such
non-PKS  stockholders of MFS. If the MFS Recapitalization is not approved by the
holders of MFS Common  Stock, the MFS  Preferred Stock will  not be issued,  the
Exchange  Offer will be abandoned and the Spin-off will not occur. See "Overview
- -- The MFS  Recapitalization" and  "Description of Securities  -- MFS  Preferred
Stock."

                               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) approximately 24.8  shares of Class C
                                    Stock and approximately 24.8 shares of Class D Stock for
                                    each $1,000 in principal amount of each outstanding 1990
                                    Series Class C and  D Debenture; (iii) approximately  23
                                    shares  of Class C Stock  and approximately 23 shares of
                                    Class D Stock  for each  $1,000 in  principal amount  of
                                    each  outstanding 1991  Series Class C  and D Debenture;
                                    and (iv) approximately 19.96 shares of Class D Stock for
                                    each $1,000 in principal amount of each outstanding 1993
                                    Series Class D  Debenture that is  validly tendered  and
                                    not properly withdrawn prior to the Expiration Date. See
                                    "The   Exchange   Offer   --   Withdrawal   Rights"  and
                                    "Description of Securities --  PKS Stock." There are  no
                                    dissenter's  rights of appraisal  in connection with the
                                    Exchange Offer.
</TABLE>

                                       2
<PAGE>

<TABLE>
<S>                                 <C>
Expiration Date...................  The Exchange  Offer will  be open  until the  Expiration
                                    Date,  which will be [                ], 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  or  Defer  Acceptance  of  Tendered  Exchangeable
                                    Securities."
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 the  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  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 or Defer
                                    Acceptance of Tendered Exchangeable Securities."
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
                                    Kiewit  Construction  Group Inc.,  a wholly  owned first
                                    tier subsidiary  of PKS  ("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,
                                    approximately 785,892 shares of  Class C Stock  pursuant
                                    to  the  Exchange  Offer. See  "Certain  Transactions --
                                    Intentions  of  Certain  Significant  Stockholders   Re-
                                    garding Participation in 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.   However,   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
</TABLE>

                                       3
<PAGE>

<TABLE>
<S>                                 <C>
                                    any additional consideration being payable by or to such
                                    holder. See "The Exchange Offer -- Terms of the Exchange
                                    Offer."
Conditions of the Exchange
 Offer............................  Consummation  of the Exchange  Offer is conditioned upon
                                    consummation  of  the  MFS  Recapitalization,  which  is
                                    subject  to the  approval by  the holders  of MFS Common
                                    Stock at the  MFS 1995 annual  stockholders meeting.  In
                                    connection with obtaining the approval of the holders of
                                    MFS  Common Stock,  PKS has  agreed to  vote 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 may be outstanding) present
                                    in  person or  by proxy  at the  meeting vote.  Thus, as
                                    described above  under "MFS  Recapitalization," the  MFS
                                    Recapitalization will be approved only if supported by a
                                    majority  of the  non-PKS stockholders of  MFS. The 1995
                                    MFS annual meeting of stockholders is presently expected
                                    to be held on [               ], 1995. If such  approval
                                    is  not received, the Exchange Offer will not be consum-
                                    mated.
                                    Further, 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 -- Conditions to the Exchange Offer." 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 to Abandon or Modify
 Exchange Offer or
 Defer Acceptance.................  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) 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; (ii)  abandon  the
                                    Exchange   Offer  and   promptly  return   all  tendered
                                    securities  to  tendering   securityholders;  or   (iii)
                                    subject  to the  rights of  withdrawal described herein,
                                    defer  acceptance  for  exchange  of  any   Exchangeable
                                    Securities.  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   or   Defer  Acceptance   of   Tendered
                                    Exchangeable Securities."
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
</TABLE>

                                       4
<PAGE>

<TABLE>
<S>                                 <C>
                                    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 Exchangeable 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."

THE SPIN-OFF

Manner of Distribution............  The  Spin-off will be  effected on the  Spin-off Date to
                                    holders  of  record  of  Class  D  Stock  on  such  date
                                    (including  Class D Stock issued  in the Exchange Offer)
                                    in  the  event  the  conditions  described  under   "The
                                    Spin-off  -- Conditions to the Spin-off; Right of PKS to
                                    Abandon, Defer or  Modify the  Spin-off" are  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 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  for each  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>

<TABLE>
<CAPTION>
                                                                     ESTIMATED NUMBER OF      ESTIMATED NUMBER OF
                                              ASSUMED NUMBER OF         SHARES OF MFS            SHARES OF MFS
                                                  SHARES OF             COMMON STOCK            PREFERRED STOCK
                                                EXCHANGEABLE        DISTRIBUTED PER SHARE    DISTRIBUTED PER SHARE
                                               STOCK EXCHANGED        OF CLASS D STOCK         OF CLASS D STOCK
                                            ---------------------  -----------------------  -----------------------
<S>                                         <C>                    <C>                      <C>
                                                  3,000,000                    1.77                     0.66
                                                  5,000,000                    1.70                     0.64
</TABLE>

<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

</TABLE>
                                       5

<PAGE>

<TABLE>
<S>                                 <C>
                                    the election of  MFS directors and  matters as to  which
                                    the  holders of MFS  Preferred Stock vote  as a separate
                                    class.  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,  might
                                    not be mailed to holders of Class D Stock (or to lenders
                                    to  which such  Class D Stock  is pledged)  until two to
                                    three weeks after the  Spin-off Date. See "The  Spin-off
                                    -- Manner of Effecting the Distribution."
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  [                   ],  1995 the  last
                                    reported  sale price of the MFS Common Stock as reported
                                    by the Nasdaq National Market  was $[      ] 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."
                                    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
</TABLE>

                                       6
<PAGE>

<TABLE>
<S>                                 <C>
                                    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............................  The  price at  which holders of  Class D  Stock can sell
                                    such stock to PKS after  the Spin-off pursuant to  PKS's
                                    Certificate  of  Incorporation  (i.e., the  Class  D Per
                                    Share  Price),  as   described  under  "Description   of
                                    Securities  --  PKS Stock  -Repurchase Duties,"  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 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 for  each
                                    share of Class D Stock and (iii) the redemption value of
                                    the  MFS  Preferred  Stock  to  be  distributed  in  the
                                    Spin-off for each  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       ESTIMATED VALUE
                                              ASSUMED NUMBER     ESTIMATED      OF MFS COMMON       OF MFS PREFERRED
                                               OF SHARES OF     CLASS D PER   STOCK DISTRIBUTED     STOCK DISTRIBUTED
                                            EXCHANGEABLE STOCK  SHARE PRICE     PER SHARE OF          PER SHARE OF
                                                EXCHANGED           (1)       CLASS D STOCK(2)      CLASS D STOCK(2)
                                            ------------------  -----------  -------------------  ---------------------
<S>                                         <C>                 <C>          <C>                  <C>
                                                 3,000,000       $   41.00        $     [ ]             $    0.66
                                                 5,000,000       $   41.75        $     [ ]             $    0.64
<FN>
                                             ------------------------------

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

                                                        (2)  For   purposes   of
                                                             this  table,   each
                                                             share of MFS Common
                                                             Stock  is valued at
                                                             $      ,  its  last
                                                             reported sale price
                                                             on the Nasdaq
                                                             National  Market as
                                                             of                ,
                                                             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.
</TABLE>

<TABLE>
<S>                                 <C>
                                    See "Risk Factors -- 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."
</TABLE>

                                       7
<PAGE>

<TABLE>
<S>                                 <C>
Conditions to the Spin-off; Right
 to Abandon, Defer or Modify......  PKS  will  not consummate  the  Spin-off unless  the MFS
                                    Recapitalization has been approved  by the holders of  a
                                    majority of the MFS Common Stock present in person or by
                                    proxy  and voting  at the  MFS 1995  annual stockholders
                                    meeting. Further, 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,  once  the
                                    Exchange  Offer  is  consummated, the  Spin-off  will be
                                    consummated promptly  thereafter. See  "The Spin-off  --
                                    Conditions  to the  Spin-off; Right  of PKS  to Abandon,
                                    Defer or Modify the Spin-off."
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.

                                       8
<PAGE>
               SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            PETER KIEWIT SONS', INC.
<TABLE>
<CAPTION>
                                                                                                  PRO FORMA (1)
                                                          HISTORICAL                  -------------------------------------
                                          ------------------------------------------                               THREE
                                                                                                                  MONTHS
                                                                 THREE MONTHS ENDED      FISCAL YEAR ENDED      ENDED MARCH
                                           FISCAL YEAR ENDED                             DECEMBER 31, 1994       31, 1995
                                                                     MARCH 31,        ------------------------  -----------
                                          --------------------  --------------------  SCENARIO #1  SCENARIO #2  SCENARIO #1
                                            1993       1994       1994       1995         (2)          (2)          (2)
                                          ---------  ---------  ---------  ---------  -----------  -----------  -----------
                                                           (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                       <C>        <C>        <C>        <C>        <C>          <C>          <C>
RESULTS OF OPERATION:
  Revenue (3)...........................  $   2,191  $   2,991  $     573  $     681   $   2,704    $   2,704    $     563
  Net earnings (loss) (4)...............        261        110         23        (26)        177          177           14
FINANCIAL POSITION:
  Total Assets (3)......................      3,634      4,504                 4,449                                 2,894
  Current portion of long-term debt
   (3)..................................         15         33                    33                                    13
  Long-term debt, less current portion
   (3)..................................        462        908                   929                                   366
  Stockholders' equity (5)..............      1,671      1,736                 1,720                                 1,325

<CAPTION>

                                          SCENARIO #2
                                              (2)
                                          -----------

<S>                                       <C>
RESULTS OF OPERATION:
  Revenue (3)...........................   $     563
  Net earnings (loss) (4)...............          14
FINANCIAL POSITION:
  Total Assets (3)......................       2,894
  Current portion of long-term debt
   (3)..................................          13
  Long-term debt, less current portion
   (3)..................................         366
  Stockholders' equity (5)..............       1,325
<FN>
- ------------------------------

(1)  The  pro forma results of operation 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 three months ended March 31, 1995, respectively. The pro forma
     financial position data as of March 31, 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)  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.

(4)  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%.

(5)  The  aggregate redemption value of common stock  at March 31, 1995 was $1.6
     billion.
</TABLE>

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

                                       9
<PAGE>
               SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                       KIEWIT CONSTRUCTION & MINING GROUP

<TABLE>
<CAPTION>
                                                      HISTORICAL                                    PRO FORMA (1)
                                      ------------------------------------------  --------------------------------------------------
                                                                                                               THREE MONTHS ENDED
                                                                THREE MONTHS         FISCAL YEAR ENDED
                                       FISCAL YEAR ENDED      ENDED MARCH 31,        DECEMBER 31, 1994           MARCH 31, 1995
                                                                                  ------------------------  ------------------------
                                      --------------------  --------------------   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  $     411  $     426   $   2,175    $   2,175    $     426    $     426
  Net earnings (loss)...............         80         77         (2)        (2)         75           74           (3)          (3)
Per Common Share
  Net earnings (loss) (3)...........       4.63       4.92      (0.14)     (0.16)       5.88         6.84        (0.26)       (0.37)
  Dividends (4).....................       0.70       0.90     --         --          --           --           --           --
  Stock price (5)...................      22.35      25.55      22.35      25.55                                 25.45        25.45
  Book value........................      27.43      31.39      27.72      32.25                                 33.97        35.86
FINANCIAL POSITION:
  Total assets......................        889        967                   896                                   819          768
  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                   448                                   372          321
  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 three months ended March 31, 1995, respectively. The pro forma
     financial position data as of March 31, 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)  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 March 31,
     1995 was $355 million.
</TABLE>

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

                                       10
<PAGE>
               SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            KIEWIT DIVERSIFIED GROUP
<TABLE>
<CAPTION>
                                                                                               PRO FORMA (1)
                                                                                   -------------------------------------
                                                                                                                THREE
                                                       HISTORICAL                                              MONTHS
                                       ------------------------------------------                               ENDED
                                                                                      FISCAL YEAR ENDED       MARCH 31,
                                        FISCAL YEAR ENDED        THREE MONTHS         DECEMBER 31, 1994         1995
                                                                ENDED MARCH 31     ------------------------  -----------
                                       --------------------  --------------------   SCENARIO     SCENARIO     SCENARIO
                                         1993       1994       1994       1995       #1 (2)       #2 (2)       #1 (2)
                                       ---------  ---------  ---------  ---------  -----------  -----------  -----------
                                                        (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                    <C>        <C>        <C>        <C>        <C>          <C>          <C>
RESULTS OF OPERATIONS:
  Revenue (3)........................  $     408  $     821  $     162  $     257   $     534    $     534    $     139
  Net earnings (loss) (4)............        181         33         25        (24)        102          103           17
Per Common Share
  Net earnings (loss) (5)............       9.08       1.63       1.21      (1.14)       4.73         4.63         0.75
  Dividends..........................       0.50     --         --         --          --           --           --
  Stock price (6)....................      59.40      60.25      59.40      60.25                                 42.20
  Book value.........................      59.52      60.36      60.17      59.85                                 43.18
FINANCIAL POSITION:
  Total assets (3)...................      2,759      3,549                 3,575                                 2,097
  Current portion of long-term debt
   (3)...............................         11         30                    31                                    11
  Long-term debt, less current
   portion (3).......................        452        899                   922                                   360
  Stockholders' equity (7)...........      1,191      1,231                 1,272                                   953
  Formula Value (6)..................      1,191      1,231

<CAPTION>
                                        SCENARIO
                                         #2 (2)
                                       -----------
<S>                                    <C>
RESULTS OF OPERATIONS:
  Revenue (3)........................   $     139
  Net earnings (loss) (4)............          17
Per Common Share
  Net earnings (loss) (5)............        0.74
  Dividends..........................      --
  Stock price (6)....................       42.85
  Book value.........................       42.83
FINANCIAL POSITION:
  Total assets (3)...................       2,148
  Current portion of long-term debt
   (3)...............................          11
  Long-term debt, less current
   portion (3).......................         360
  Stockholders' equity (7)...........       1,004
  Formula Value (6)..................
<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 three months ended  March 31, 1995, respectively. The pro
     forma financial  position data  as  of March  31,  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)  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.

(4)  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%.

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

(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)  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 March 31, 1995 was $1.28
     billion.
</TABLE>

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

                                       11
<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             THREE MONTHS
                                                          -------------------------------------      ENDED
                                                             1992         1993       1994 (1)    MARCH 31, 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       $103,788
  Network systems integration...........................       61,122       71,063       58,040         14,552
                                                          -----------  -----------  -----------  --------------
    Total...............................................      108,707      141,111      286,747        118,340
Costs and expenses:
  Operating expenses....................................       76,667      102,905      273,431        119,882
  Depreciation and amortization.........................       20,544       34,670       73,869         29,073
  General and administrative expenses...................       23,267       34,989       75,576         25,941
                                                          -----------  -----------  -----------  --------------
    Total...............................................      120,478      172,564      422,876        174,896
                                                          -----------  -----------  -----------  --------------
Loss from operations....................................      (11,771)     (31,453)    (136,129)       (56,556 )
Other income (expense) net..............................         (792)       8,464      (17,175)        (7,252 )
                                                          -----------  -----------  -----------  --------------
Loss before income taxes................................      (12,563)     (22,989)    (153,304)       (63,808 )
Income tax benefit (expense)............................         (566)       7,220        2,103           (100 )
                                                          -----------  -----------  -----------  --------------
  Net loss..............................................     $(13,129)    $(15,769)   $(151,201)     $ (63,908 )
                                                          -----------  -----------  -----------  --------------
                                                          -----------  -----------  -----------  --------------
Loss per share (2) .....................................      $(0.30)      $(0.30)      $(2.42)         $(0.99)
                                                          -----------  -----------  -----------  --------------
                                                          -----------  -----------  -----------  --------------
Number of shares (2)....................................   44,085,000   52,882,000   62,437,000     64,365,000
                                                          -----------  -----------  -----------  --------------
                                                          -----------  -----------  -----------  --------------
Ratio of earnings to combined fixed charges and
 preferred stock dividends (3)..........................      --           --           --            --

OTHER DATA:
  EBITDA (4)............................................     $  8,773     $  3,217   $  (62,260)    $  (27,483 )
  Capital expenditures, including acquisitions of
   businesses, net of cash acquired.....................      110,171      128,651      576,711        106,665

STATISTICAL DATA (5):
  Circuits in service (6)...............................      589,130      947,391    1,713,430      1,964,872
  Buildings connected...................................        1,101        1,583        2,754          3,284
  Route miles (7).......................................          858        1,298        2,405          2,616
  Fiber miles (8).......................................       38,595       62,154      107,919        122,074
  Switches..............................................      --                 1           12             12

BALANCE SHEET DATA:
  Networks and equipment................................     $243,243     $370,334   $  787,453     $  897,920
  Total assets..........................................      363,299      906,937    1,584,546      1,554,945
  Long-term debt, less current portion..................          169          143      548,333        560,688
  Stockholders' equity..................................      298,516      811,105      770,103        719,610
<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 three
     months ended  March 31,  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, $136,129,000 and $63,808,000, 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
     cash flow for the periods. 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>

                                       12
<PAGE>
                                  RISK FACTORS

    Before  tendering  their  Exchangeable  Securities  for  the  Offered Stock,
holders of  Exchangeable  Securities  should carefully  consider  the  following
factors  in  addition to  the other  information  contained 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 INVESTMENT CHARACTERISTICS OF EXCHANGEABLE STOCK AND CLASS D STOCK

    Participation  in the Exchange Offer by  a holder of Exchangeable Securities
is voluntary, and in the case of the holders of Exchangeable Stock, the decision
to participate  should be  made on  the basis  of the  information contained  or
incorporated  by reference in this Prospectus and the holder's assessment of the
investment characteristics of the Class  B Stock and Class  C Stock, on the  one
hand,  and the investment characteristics of the  Class D Stock and the Spin-off
Stock, on the other.

    CERTAIN  INVESTMENT  CHARACTERISTICS  OF  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 (ii) the potential for continued
growth, or 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. Other  important characteristics of  the Class B  Stock and the
Class C Stock are described elsewhere  in this "Risk Factors" section and  under
"Description of Securities -- PKS Stock."

    CERTAIN  INVESTMENT CHARACTERISTICS OF 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  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, and  (iv) the  possibility that changes  in the  Class D Per
Share Price based on the annual changes in the Class D Formula Value may be less
readily predictable than changes in the Class  B&C Per Share Price based on  the
annual  changes in the Class B&C Formula  Value, given the diverse and generally
less mature businesses that  comprise the Diversified Group  as compared to  the
Construction  & Mining Group. 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."  Other  important  characteristics  of the  Class  D  Stock  are described
elsewhere in this "Risk Factors" section and under "Description of Securities --
PKS Stock."

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 the market value of  such
MFS  Common Stock at the time of the Spin-off will be substantially in excess of
the value attributed to the MFS Common Stock held by KDG in the determination of
the Class D Formula Value and the Class D Per Share Price in accordance with the
PKS Certificate of Incorporation. Accordingly, the  sum of (i) the market  value
of such amount of MFS Common Stock plus (ii) the redemption value of such amount
of  MFS Preferred 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."

                                       13
<PAGE>
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 Date the same number and classes of PKS stock that
the holder would receive upon a later 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.  Accordingly, the  PKS Board  recommends that  holders of Exchangeable
Debentures tender such Exchangeable Debentures in the Exchange Offer.

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. In selecting
employees and determining the number of shares  of Class C Stock to be  offered,
the  PKS Board and  management consider 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.

    Under,   and  subject  to   the  provisions  of,   the  PKS  Certificate  of
Incorporation, each holder of Class C Stock has the right to sell Class C  Stock
back  to PKS at any  time during the first fifteen  days of each calendar month,
and the right to convert Class C  Stock into Class D Stock exercisable during  a
two-month period from and including October 15 through and including December 15
of each year. If an employee sells Class C Stock back to PKS or converts 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.

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.

CONDITIONS TO CONSUMMATION OF THE EXCHANGE OFFER; ABANDONMENT OR MODIFICATION
OF THE EXCHANGE OFFER

    The consummation of the Exchange Offer is subject to the approval of the MFS
Recapitalization  by a  vote of a  majority of  the holders of  MFS Common Stock
present in person or  by proxy and  voting at the  MFS 1995 annual  stockholders
meeting.  Further, the Exchange Offer will  not be consummated unless the Ruling
remains substantially in effect as of  the date of consummation of the  Exchange
Offer. See "The Exchange Offer -- Conditions to the Exchange Offer."

                                       14
<PAGE>
    In  addition, PKS has reserved  the right to abandon  or modify the terms of
the Exchange Offer at  any time if  the PKS Board  of Directors determines  that
such  abandonment or modification would  be in the best  interest of PKS and its
stockholders. Without limiting the factors the PKS Board might take into account
in taking such action, 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 legal or regulatory considerations  and
might  also consider modification of  the terms of the  Exchange Offer under the
circumstances described below  under "Possible Limit  on Amount of  Exchangeable
Stock  to Be Accepted in  Exchange Offer." Moreover, the  Exchange Offer will be
abandoned if the PKS Board of  Directors determines to abandon the Spin-off,  as
described  below.  Thus,  even  if the  conditions  described  in  the preceding
paragraph are satisfied, there is no  assurance that the Exchange Offer will  be
consummated  or,  if consummated,  will be  consummated  on the  terms described
herein. If PKS does abandon or modify  the terms of the Exchange Offer, it  will
so  notify the holders who have tendered Exchangeable Securities. In the case of
abandonment, PKS  will  return all  tendered  securities,  and in  the  case  of
modification  of a  material term  of the  Exchange Offer,  PKS will  extend the
Exchange Offer if  necessary so  that the Expiration  Date, as  extended, is  at
least  10 business  days after the  announcement of such  modification. See "The
Exchange Offer -- Right of PKS to  Extend, Abandon or Modify the Exchange  Offer
or Defer Acceptance of Tendered Exchangeable Securities."

POSSIBLE LIMIT ON AMOUNT OF EXCHANGEABLE STOCK TO BE ACCEPTED IN EXCHANGE OFFER

    The PKS Board of Directors has not considered it 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 has reserved the right to do so at any time
prior to the Expiration Date in the  event it determines that acceptance of  all
tendered  Exchangeable Stock would  not be in  the best interest  of PKS and its
stockholders. In the event the PKS Board of Directors were to take such  action,
it  would impose such a limit on the tendered Exchangeable Stock (but not on the
tendered Exchangeable  Debentures) on  a pro  rata basis  and would  follow  the
procedures applicable to a modification of the Exchange Offer. See "The Exchange
Offer  -- Right of PKS to Extend, Abandon  or Modify the Exchange Offer or Defer
Acceptance of Tendered Exchangeable Securities." 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.

CONDITIONS TO CONSUMMATION OF THE SPIN-OFF; ABANDONMENT, DEFERRAL OR
MODIFICATION OF THE SPIN-OFF

    The  consummation of  the Spin-off  is subject  to the  MFS Recapitalization
being approved by a vote  of a majority of the  holders of the MFS Common  Stock
present  in person or  by proxy and  voting at the  MFS 1995 annual stockholders
meeting. Further, the Spin-off will not be consummated unless the Ruling remains
substantially in effect on the Spin-off Date.

    In addition, PKS  has reserved  the right to  abandon, defer  or modify  the
terms  of the Spin-off at any time before  the Spin-off Date if the PKS Board of
Directors determines  for any  reason that  such  action would  be in  the  best
interest of PKS and its stockholders. Without limiting the factors the PKS Board
might  take into  account in  taking such action,  the PKS  Board might consider
abandonment, deferral  or  modification of  the  Spin-off if  such  action  were
determined  to be appropriate in light of legal or regulatory considerations, or
upon the occurrence of a material change in the market value of MFS Common Stock
or some  other  event  materially  affecting the  anticipated  benefits  of  the
Spin-off to the holders of Class D Stock. Thus, even if the conditions described
in  the  preceding  paragraph are  satisfied,  there  is no  assurance  that the
Spin-off will  be  consummated  or,  if  it is  consummated,  that  it  will  be
consummated  on the terms described herein. The Spin-off will not necessarily be
abandoned in  the event  the  Exchange Offer  is  abandoned. However,  once  the
Exchange  Offer  is  consummated,  the  Spin-off  will  be  consummated promptly
thereafter.

TRANSFERS 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  order  that the

                                       15
<PAGE>
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.  Such transfer  may have  a negative
impact on the  liquidity of the  Construction & Mining  Group. However, 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." If the Construction & Mining Group were unable to
fund such transfer  from its own  resources, 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.

BUSINESSES OF CONSTRUCTION & MINING GROUP

    The  Exchange Offer and the  Spin-off will not affect  the Class C Per Share
Price or (except for the transfers from  the Construction & Mining Group to  the
Diversified  Group  described at  "Transfers from  Construction &  Mining Group"
above) the businesses of the  Construction & Mining Group. 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 a significant  portion 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."
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. 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."

COMPOSITION OF DIVERSIFIED GROUP AFTER SPIN-OFF

    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

                                       16
<PAGE>
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.

    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.  Although  that business
currently  produces  substantial  cash  flow,  those  cash  flows  will  decline
substantially  over  the  next  few  years,  as  certain  long-term  coal  sales
arrangements end.  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.   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." This shift from fixed to avoided  cost
pricing  is expected to result in substantially  lower revenues to CECI from its
current operating facilities.

    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.

    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

                                       17
<PAGE>
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 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

                                       18
<PAGE>
have  pledged  Exchangeable  Stock   to  a  lender   and  who  are   considering
participation in the Exchange Offer, as well as persons 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 Class C Stock being exchanged  pursuant to the Exchange Offer is  pledged
to  a lender,  Class D  Stock received  in exchange  for that  Class C  Stock is
probably also subject to  the pledge under the  terms of the loan  documentation
between the stockholder and the lender. In addition, if Class D Stock (including
Class  D Stock received in exchange for Class  C Stock 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 stockholder  may be
required to deliver Class D Stock received in exchange for Class C Stock in  the
Exchange Offer and Spin-off Stock received in the Spin-off to such stockholder's
lender upon receipt of that stock.

CONVERSION RIGHTS OF CLASS B STOCK, CLASS C STOCK AND CLASS D STOCK

    Under  the PKS Certificate of Incorporation, Class B Stock and Class C Stock
are convertible  into Class  D Stock  at the  option of  the holder  exercisable
during  the period from and including  October 15 through and including December
15 of  each  year  (unless  the  PKS Board  of  Directors  has  suspended  PKS's
obligation  to repurchase Class C Stock or Class D Stock under the circumstances
specified in the PKS Certificate of Incorporation or PKS elects to purchase  for
cash the shares tendered for conversion). In contrast, a holder of Class D Stock
may convert such stock into Class C Stock only in connection with an offering of
Class  C  Stock to  such holder  as part  of an  offering of  such stock  to PKS
employees, and then only as to the number of shares of Class C Stock so  offered
to  such holder. Moreover, in the event  that the Class D Stock becomes Publicly
Traded, such right to convert Class D Stock to Class C Stock in connection  with
offerings  of Class  C Stock to  employees would terminate.  See "Description of
Securities -- PKS  Stock -- Conversion  of Class  D Stock into  Class C  Stock."
Accordingly,  holders electing to  exchange Class B  Stock or Class  C Stock for
Class D Stock in the  Exchange Offer may never  have the opportunity to  convert
such Class D Stock back to Class C Stock.

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,  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

                                       19
<PAGE>
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.

CERTAIN OTHER TERMS OF CLASS C STOCK AND CLASS D STOCK

    VOTING RIGHTS.  On all matters on which the holders of the Class C Stock and
the  Class D Stock  vote together, the Class  C Stock and the  Class D Stock are
each  entitled  to  one  vote  per  share.  However,  the  PKS  Certificate   of
Incorporation  provides that certain important stockholder actions are effective
only upon  the approval  of at  least 80%  of the  Class C  Stock, voting  as  a
separate  class, as well as a majority of the combined Class C Stock and Class D
Stock. Certain other actions would require the approval of 66 2/3% of the  Class
C Stock, voting as a separate class, as well as a majority of the combined Class
C  Stock and  Class D  Stock. Moreover,  the holders  of the  Class C  Stock are
entitled to elect two-thirds of the directors, while the remaining directors are
elected  by  the  holders  of  the  Class  D  Stock.  The  PKS  Certificate   of
Incorporation  further provides that, in the event that the number of issued and
outstanding shares of Class C Stock should  at any time be less than the  number
of  issued and outstanding shares  of Class D Stock,  the PKS Board of Directors
may declare stock dividends on Class  C Stock without declaring a  corresponding
stock  dividend on the Class D Stock so that the number of outstanding shares of
Class C Stock and  Class D Stock will  be approximately equal. These  provisions
give  the Class  C Stock  a significant degree  of influence  over the Company's
decision-making processes, despite the fact that, on the date hereof and for the
foreseeable future, even after  giving effect to  the Spin-off, the  Diversified
Group will represent a larger portion of the Company's assets and net worth than
will  the Construction  & Mining  Group. See  "Description of  Securities -- PKS
Stock -- Voting" and "-- The PKS Board of Directors."

    DIVIDENDS.  Dividends on the Class B Stock and the Class C Stock are limited
to the amount of funds legally available  for the payment of dividends less  the
Available  Class  D  Dividend Amount.  Under  current Delaware  law,  the amount
legally available for the payment of dividends is calculated by reference to the
surplus or, under certain circumstances,  the profits of the Company.  Dividends
on  Class D Stock are limited to the Available Class D Dividend Amount, which is
the lesser  of  (a) the  funds  of PKS  legally  available for  the  payment  of
dividends  or (b) an amount equal to (i) the Class D Formula Value less (ii) the
aggregate amount of dividends declared during the current year. Thus,  dividends
on  any class  of PKS stock  may be  precluded because of  the unavailability of
funds for such  purpose under  Delaware law, regardless  of the  surplus or  net
profits   of  the  Construction  &  Mining  Group  and  the  Diversified  Group,
respectively. See  "Description of  Securities --  PKS Stock  -- Dividends."  In
addition,  because the  amount available for  dividends on each  class of common
stock is dependent upon, in  part, the Class D Formula  Value, which in turn  is
dependent  upon  certain allocations,  inter-company transactions  and dividends
which are subject to the approval of the PKS Board of Directors, the holders  of
the different classes of the Company's stock are dependent upon the PKS Board of
Directors  to  resolve any  potential conflicts  arising from  such allocations,
inter-company transactions and dividends. See "-- Potential Conflicts; Fiduciary
Duties of the PKS Board," below.

    MANDATORY EXCHANGE.  At any time when all the assets and liabilities of  the
Construction  & Mining Group are  held by a wholly  owned subsidiary of PKS, PKS
may require the exchange of all the outstanding Class B Stock and Class C  Stock
for  the common stock of such subsidiary, on a pro rata basis. Similarly, at any
time when all the assets and liabilities of the Diversified Group are held by  a

                                       20
<PAGE>
wholly  owned  subsidiary  of PKS,  PKS  may  require the  exchange  of  all the
outstanding Class D Stock for the common stock of such subsidiary, on a pro rata
basis. Further, until the Class D Stock becomes Publicly Traded, PKS may require
that all the outstanding Class D Stock  be exchanged for Class C Stock. The  tax
consequences of a mandatory exchange of Class B Stock and Class C Stock or Class
D  Stock for the stock of a subsidiary of the Company cannot be determined until
the time of such exchange. However, the  PKS Board of Directors will review  the
tax implications of such an exchange when considering whether to require such an
exchange. See "Description of Securities -- PKS Stock -- Mandatory Exchanges."

    REPURCHASE  OBLIGATIONS.    The PKS  Certificate  of  Incorporation contains
provisions under  which  the Company  is  obligated to  repurchase  the  various
classes  of its stock. The Company is  obligated to repurchase the Class B Stock
and the Class C Stock upon  the request of a holder  at the Class B&C Per  Share
Price,  which  is based  on the  Class B&C  Formula Value.  PKS is  obligated to
repurchase the Class D Stock upon request of  a holder at the Class D Per  Share
Price,  which is  based on  the Class  D Formula  Value. However,  the Company's
obligation to repurchase the Class D Stock  would cease when and if the Class  D
Stock  becomes Publicly Traded. Thereafter,  the ability of a  holder of Class D
Stock to realize the value  of such stock would be  dependent on the market  for
such stock.

    Under  the PKS Certificate  of Incorporation, if the  PKS Board of Directors
determines in any fiscal  year that the  Class B&C Formula Value  at the end  of
such  year is likely to be lower than the  Class B&C Formula Value as of the end
of the prior year (other than by  reason of the declaration of dividends),  then
the  PKS Board may suspend the obligation of PKS to repurchase any Class B Stock
and Class C Stock  voluntarily tendered by  the holder for up  to one year.  See
"Description  of  Securities  --  PKS Stock  --  Repurchase  Duties."  A similar
provision applies to  Class D  Stock and  the Class  D Formula  Value. Any  such
suspension would also have the effect of suspending the right to convert Class B
Stock  or Class C Stock to Class D Stock. If the Company's repurchase obligation
with respect to Class B Stock and Class C Stock is suspended, repurchases by PKS
of Class B Stock and Class C  Stock otherwise than upon voluntary tender by  the
holder  will continue, but the Company's  obligation to pay for such repurchases
is deferred until  after the  end of the  suspension period.  If the  suspension
period  ends during the second half of  a fiscal year, the repurchase price will
be the formula price per share determined as of the end of that fiscal year, but
if the suspension period ends in the first half of a fiscal year, the repurchase
price will be based on the formula price  per share determined as of the end  of
the  prior fiscal  year. As a  result of these  provisions, a holder  of Class B
Stock and Class C Stock or  Class D Stock may not be  able to dispose of his  or
her investment for cash for a period of up to one year.

    The  PKS Board may also elect  to limit the duty of  PKS to purchase Class D
Stock for cash in  any fiscal year  after PKS has purchased  ten percent of  the
number of shares of Class D Stock outstanding at the end of the preceding fiscal
year.  As a result of this provision, a  holder of Class D Stock may be required
to accept a promissory note of the Company in lieu of cash in retirement of  the
holder's  investment regardless of  the financial condition  of the Company. See
"Description of Securities -- PKS Stock -- Limitation on Cash Repurchase  Duties
- -- Class D Stock."

    LIQUIDATION/REORGANIZATION.   Upon the  voluntary or involuntary liquidation
of the Company, the holders of Class  D Stock will not receive any  distribution
unless  there  are sufficient  funds  available, after  payment  in full  of the
Company's creditors, to pay an amount equal to $1.00 per share to the holders of
the Class B Stock and the Class C Stock. The holders of Class B Stock and  Class
C  Stock will receive nothing  more than an amount equal  to the $1.00 per share
preference described  in  the preceding  sentence  unless there  are  sufficient
remaining  funds to  pay an amount  equal to $2.00  per share to  the holders of
Class D  Stock. Neither  of  these liquidation  preferences  is secured  by  any
sinking  fund and neither will restrict  the Company's ability to pay dividends.
The distribution  of any  amounts  remaining after  payment of  such  preference
amounts  on the Class B Stock  and the Class C Stock  and the Class D Stock will
depend upon the relative values of the assets of the Construction & Mining Group
and the  Diversified Group.  These values  will  be determined  at the  time  of
liquidation.  See "Description of  Securities -- PKS  Stock -- Liquidation." The
value of  the assets  of each  Group will  be affected  by certain  allocations,
inter-company    transactions    and    dividends   which    are    subject   to

                                       21
<PAGE>
the approval of  the PKS  Board of Directors.  As a  result, in the  event of  a
liquidation  the amounts received by the holders of the different classes of the
Company's stock may be  dependent upon how the  PKS Board of Directors  resolved
any  potential conflicts arising from such matters prior to the liquidation. See
"-- Potential Conflicts; Fiduciary Duties of the PKS Board," below.

    In  the  event  that  the  Company   were  to  enter  into  liquidation   or
reorganization   proceedings  under  the  United  States  bankruptcy  laws,  the
Company's creditors  would  rank senior  to  the holders  of  any class  of  the
Company's stock. A stockholder who had tendered his or her shares for repurchase
by  the  Company prior  to  the commencement  of  such proceedings  (including a
stockholder who tendered during a suspension period described under  "Repurchase
Obligations"  above) might conceivably  be treated as a  creditor of the Company
rather than as a stockholder as to the tendered shares. However, even if such  a
stockholder  were treated as  a creditor, it is  likely that he  or she would be
given a lower priority than other creditors  of the Company for the purposes  of
any distribution.

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  "-- Transfers from
Construction & Mining Group," above for a discussion of possible loans from  the
Diversified  Group to  the Construction  & Mining  Group in  connection with the
Exchange Offer.

                                       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 $56.6  million
for  the three months ended March 31, 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, approximately 23% of the shares  of MFS Common Stock to be  distributed
in  the Spin-off (representing  an aggregate of  approximately 9,200,000 shares)
will be  subject to  such agreements.  See "Certain  Transactions --  Agreements
Regarding  MFS 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. 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; 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." 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

                                       25
<PAGE>
share  of MFS Preferred Stock has five (5) votes on all matters presented to the
stockholders of  MFS. KDG,  however,  has granted  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. 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 is required  in
connection  with the Spin-off. PKS  has advised MFS that  it intends to vote 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
will be 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  has agreed that,  if the MFS
Recapitalization is  approved by  the non-PKS  holders of  MFS Common  Stock  as
described  herein, PKS will vote all of the  shares of MFS Common Stock owned or
controlled by  it in  favor  of the  proposed  amendments, thus  assuring  their
adoption.  In addition,  at the  April 26  MFS Board  Meeting, the  MFS Board of
Directors also 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 the shareholder  rights plan 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 discourage unsolicited takeover bids from third parties.

                                       26
<PAGE>
                                    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)  approximately  24.8 shares  of Class  C  Stock and  approximately 24.8
       shares of Class D Stock for each $1,000 principal amount of the Company's
       outstanding 1990 Series Convertible Debentures due October 31, 2000;

    (iii) approximately 23 shares of Class  C Stock and approximately 23  shares
       of  Class  D Stock  for  each $1,000  principal  amount of  the Company's
       outstanding 1991 Series Convertible Debentures due October 31, 2001; and

    (iv) approximately 19.96 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.  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. 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 [        ], 1995 the last reported sale price of the MFS Common Stock
as reported by the Nasdaq National  Market was $[     ] 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 to take  any other action  in
order to receive the Spin-off Stock pursuant to the Spin-off.

    The  Company currently expects that, if the holders of a majority of the MFS
Common Stock present in  person or by  proxy and voting at  the 1995 MFS  annual
stockholders  meeting, which is  presently expected to be  held on [          ],
1995, approve the MFS Recapitalization,  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."

                                       27
<PAGE>
    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 for each 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 for each  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 for each 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    SHARE OF CLASS D STOCK     SHARE OF CLASS D STOCK
- ----------------  -------------------------  -------------------------
<S>               <C>                        <C>
   3,000,000                   1.77                       0.66
   5,000,000                   1.70                       0.64
</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
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  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 for  each share of Class D Stock, (iii)
the redemption  value  of the  MFS  Preferred Stock  to  be distributed  in  the
Spin-off  for each share  of Class D Stock  and (iv) the  total of such amounts,
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>
                                  ESTIMATED VALUE     ESTIMATED VALUE
 ASSUMED NUMBER     ESTIMATED      OF MFS COMMON     OF MFS PREFERRED
  OF SHARES OF     CLASS D PER   STOCK DISTRIBUTED   STOCK DISTRIBUTED      TOTAL
  EXCHANGEABLE        SHARE        PER SHARE OF        PER SHARE OF       ESTIMATED
STOCK EXCHANGED     PRICE(1)     CLASS D STOCK(2)    CLASS D STOCK(2)       VALUE
- ----------------  -------------  -----------------  -------------------  -----------
<S>               <C>            <C>                <C>                  <C>
   3,000,000        $   41.00        $     [ ]           $    0.66        $     [ ]
   5,000,000        $   41.75        $     [ ]           $    0.64        $     [ ]
<FN>
- ------------------------
(1)  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.

(2)  For purposes of this  table, each share  of MFS Common  Stock is valued  at
     $[        ], its last  reported sale price on the Nasdaq National Market as
     of [     ], 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.
</TABLE>

    As  shown  in  the  above  table,  the  greater  the  number  of  shares  of
Exchangeable Stock exchanged in the Exchange  Offer (i) the greater the Class  D
Per  Share Price and (ii)  the fewer shares of  Spin-off Stock to be distributed
for each  share of  Class D  Stock,  in each  case after  giving effect  to  the
Exchange Offer and the Spin-off.

THE MFS RECAPITALIZATION

    In  order to satisfy certain requirements  of applicable tax law relating to
the Spin-off that are addressed by the Ruling, PKS and KDG have agreed with  MFS
to effect the MFS Recapitalization

                                       28
<PAGE>
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.
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. 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 has  been approved by the  MFS Board of  Directors,
and  by a special  committee of the  MFS Board of  Directors comprised solely of
independent  directors   of  MFS.   In  addition,   consummation  of   the   MFS
Recapitalization  is subject to the approval  of the MFS Recapitalization by the
holders of  MFS  Common Stock  at  the  MFS 1995  annual  stockholders  meeting,
presently  expected to be held on [        ], 1995. In connection with obtaining
approval of the holders of MFS Common Stock,  PKS has agreed to vote 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 may be  outstanding) present in person or by proxy
at the meeting  vote. Thus, the  MFS Recapitalization will  be approved only  if
supported   by   a  majority   of  such   non-PKS   stockholders.  If   the  MFS
Recapitalization is  not  approved  by  the MFS  common  stockholders,  the  MFS
Preferred Stock will not be issued, the Exchange Offer will be abandoned and the
Spin-off will not occur.

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.

    RULING REQUEST; PRELIMINARY NEGOTIATIONS.   During meetings held during  the
second  half of  1994, the  PKS Board  of Directors  considered and  discussed a
number of alternative transactions relating to the Diversified Group,  including
the  possible spin-off of the Company's equity interest in MFS to the holders of
Class D Stock. During that period, 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. 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 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.

                                       29
<PAGE>
    In order to qualify for such tax-free treatment of the Spin-off, among other
things, at the time of the Spin-off, PKS must control at least 80% of the voting
power  of the MFS capital stock. To  satisfy this requirement, 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 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 MFS Board of Directors
to approve the  specific terms  of the  MFS Preferred  Stock, including  without
limitation,  dividend rate, conversion rate and  certain 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

                                       30
<PAGE>
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.

    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.

    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. 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.,  to  review  certain   aspects  of  the   MFS
Recapitalization  and the  Exchange Offer. The  PKS Board  appointed the Special
Committee to 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.

                                       31
<PAGE>
    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, (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, 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  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.)

    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  connection with its  approval of the
Spin-off, the PKS Board considered the market  value of the MFS Common Stock  as
compared  to the value attributed  to MFS in the calculation  of the Class D Per
Share  Price.  The  PKS  Board  also  recognized  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 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 1996. The PKS  Board therefore 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.

    The PKS Board also determined that the appropriate ratio for such  exchanges
would  be the ratio applicable to January  1995 conversions of Class B Stock and
Class C Stock  into Class D  Stock (as adjusted  for the dividends  paid on  the
Class   B  Stock  and   the  Class  C   Stock  in  January   1995  of  $.45  per

                                       32
<PAGE>
share and in May 1995 of $.45 per share). 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 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.

    OPINIONS OF FINANCIAL ADVISORS.  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.

    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 June 5, 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.

                                       33
<PAGE>
    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 prior to October  15, 1995 as described  in
the draft dated June 5, 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 OPINION
WAS PREPARED FOR THE PKS BOARD OF DIRECTORS, 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.

    THE FULL TEXT OF THE  OPINION OF CS FIRST BOSTON  DATED JUNE 9, 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
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.  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.

    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 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.

                                       34
<PAGE>
    In addition, the PKS Board has received an opinion from Lehman Brothers Inc.
("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. 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.

    THE  FULL TEXT OF THE  OPINION OF LEHMAN BROTHERS  DATED JUNE 9, 1995, WHICH
SETS FORTH THE  ASSUMPTIONS MADE, MATTERS  CONSIDERED AND LIMITS  ON THE  REVIEW
UNDERTAKEN  BY LEHMAN BROTHERS, IS ATTACHED AS  ANNEX II TO THIS PROSPECTUS. 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 WAS
PREPARED FOR THE PKS BOARD OF DIRECTORS, 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
present 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.

    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  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, June 9,  1995 and, with the
consent of PKS,  Lehman Brothers  has not  considered possible  changes in  such
applicable tax laws, accounting standard or regulatory and legal requirements.

                                       35
<PAGE>
    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 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.

    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.  Participation in the Exchange Offer is
voluntary. The PKS Board of Directors is not making a recommendation to  holders
of  Exchangeable Stock with respect to  participation in the Exchange Offer, and
each such holder should make such a decision based on such considerations as the
holder deems important, including those set forth herein at "Risk Factors." 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,  approximately 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."

    THE PKS BOARD RECOMMENDS THAT HOLDERS OF EXCHANGEABLE DEBENTURES PARTICIPATE
IN THE  EXCHANGE OFFER,  FOR THE  REASONS  DESCRIBED AT  "RISK FACTORS  --  RISK
FACTORS  RELATING  TO THE  EXCHANGE OFFER,  THE SPIN-OFF  AND PKS  SECURITIES --
CERTAIN CONSEQUENCES OF DECISION NOT TO EXCHANGE."

ABANDONMENT OR MODIFICATION OF TRANSACTIONS

    PKS reserves the right in its sole discretion 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, once the Exchange Offer  is
consummated,  the  Spin-off will  be consummated  promptly thereafter.  See "The
Exchange Offer -- Right of PKS to  Extend, Abandon or Modify the Exchange  Offer
or  Defer Acceptance of  Tendered Exchangeable Securities"  and "The Spin-off --
Conditions to Spin-off; Right of PKS to Abandon, Defer or Modify the Spin-off."

                                       36
<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 three months ended March 31, 1994 and
1995, and  as of  March 31,  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  March  31, 1995  and  the  results of
operations for the three months  ended March 31, 1994  and 1995. The results  of
operations  for  the  three months  ended  March  31, 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 three months ended  March
31,  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 March 31, 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.
Management believes Scenario 1 is more 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.

                                       37
<PAGE>
              SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            PETER KIEWIT SONS', INC.
<TABLE>
<CAPTION>
                                                                                                               PRO FORMA
                                                                                                                  (1)
                                                                                                              -----------
                                                                 HISTORICAL
                                 ---------------------------------------------------------------------------  YEAR ENDED
                                                                                         THREE MONTHS ENDED    DECEMBER
                                                                                                               31, 1994
                                                   FISCAL YEAR ENDED                         MARCH 31,        -----------
                                 -----------------------------------------------------  --------------------  SCENARIO #1
                                   1990       1991       1992       1993       1994       1994       1995         (2)
                                 ---------  ---------  ---------  ---------  ---------  ---------  ---------  -----------
                                                     (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                              <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
RESULTS OF OPERATION:
  Revenue (3)..................  $   1,917  $   2,086  $   2,027  $   2,191  $   2,991  $     573  $     681   $   2,704
  Earnings (loss) from
   continuing operations before
   cumulative effect of change
   in accounting principle
   (4).........................        108         49        150        261        110         23        (26)        177
  Net earnings (loss) (4)......         80        441        181        261        110         23        (26)        177
FINANCIAL POSITION:
  Total Assets (3).............      2,966      2,632      2,549      3,634      4,504                 4,449
  Current portion of long-term
   debt (3)....................         31         15          3         15         33                    33
  Long-term debt, less current
   portion (3).................        269        110         30        462        908                   929
  Stockholders' equity (5).....      1,185      1,396      1,458      1,671      1,736                 1,720

<CAPTION>

                                                    THREE MONTHS
                                                ENDED MARCH 31, 1995

                                              ------------------------
                                 SCENARIO #2  SCENARIO #1  SCENARIO #2
                                     (2)          (2)          (2)
                                 -----------  -----------  -----------

<S>                              <C>          <C>          <C>
RESULTS OF OPERATION:
  Revenue (3)..................   $   2,704    $     563    $     563
  Earnings (loss) from
   continuing operations before
   cumulative effect of change
   in accounting principle
   (4).........................         177           14           14
  Net earnings (loss) (4)......         177           14           14
FINANCIAL POSITION:
  Total Assets (3).............                    2,894        2,894
  Current portion of long-term
   debt (3)....................                       13           13
  Long-term debt, less current
   portion (3).................                      366          366
  Stockholders' equity (5).....                    1,325        1,325
<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, 1995 and three months ended March 31, 1995, respectively. The pro forma
     financial position data as of March 31, 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)  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.

(4)  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%.

(5)  The  aggregate redemption value of common stock  at March 31, 1995 was $1.6
     billion.
</TABLE>

                                       38
<PAGE>
              SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                       KIEWIT CONSTRUCTION & MINING GROUP
<TABLE>
<CAPTION>
                                                                                                                  PRO
                                                                                                               FORMA (1)
                                                                                                              -----------
                                                                                                              FISCAL YEAR
                                                                 HISTORICAL                                      ENDED
                                 ---------------------------------------------------------------------------   DECEMBER
                                                                                            THREE MONTHS          31,
                                                                                               ENDED             1994
                                                   FISCAL YEAR ENDED                         MARCH 31,        -----------
                                 -----------------------------------------------------  --------------------   SCENARIO
                                   1990       1991       1992       1993       1994       1994       1995       #1 (2)
                                 ---------  ---------  ---------  ---------  ---------  ---------  ---------  -----------
                                                     (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                              <C>        <C>        <C>        <C>        <C>        <C>        <C>        <C>
Results of Operations:
  Revenue......................  $   1,671  $   1,834  $   1,675  $   1,783  $   2,175  $     411  $     426   $   2,175
  Earnings (loss) before
   cumulative effect of change
   in accounting principle.....         57         23         69         80         77         (2)        (2)         75
  Net earnings (loss)..........         57         23         82         80         77         (2)        (2)         75
Per Common Share (3):
  Earnings (loss) before
   cumulative effect of change
   in accounting principle.....       2.47       1.12       3.79       4.63       4.92      (0.14)     (0.16)       5.88
  Net earnings (loss)..........       2.47       1.12       4.48       4.63       4.92      (0.14)     (0.16)       5.88
  Dividends (4)(5).............       0.25       0.30       0.70       0.70       0.90     --         --          --
  Stock price (6)..............      10.35      14.40      18.70      22.35      25.55      22.35      25.55
  Book value...................      14.99      19.25      23.31      27.43      31.39      27.72      32.25
Financial Position:
  Total assets.................        762        849        862        889        967                   896
  Current portion of long-term
   debt........................         15          7          2          4          3                     2
  Long-term debt, less current
   portion.....................         14         13         12         10          9                     7
  Stockholders' equity (7).....        350        400        437        480        505                   448
  Formula value (6)............        249        299        351        391        411

<CAPTION>
                                                    THREE MONTHS
                                                       ENDED
                                                     MARCH 31,
                                                        1995
                                              ------------------------
                                  SCENARIO     SCENARIO     SCENARIO
                                   #2 (2)       #1 (2)       #2 (2)
                                 -----------  -----------  -----------
<S>                              <C>          <C>          <C>
Results of Operations:
  Revenue......................   $   2,175    $     426    $     426
  Earnings (loss) before
   cumulative effect of change
   in accounting principle.....          74           (3)          (3)
  Net earnings (loss)..........          74           (3)          (3)
Per Common Share (3):
  Earnings (loss) before
   cumulative effect of change
   in accounting principle.....        6.84        (0.26)       (0.37)
  Net earnings (loss)..........        6.84        (0.26)       (0.37)
  Dividends (4)(5).............      --           --           --
  Stock price (6)..............                    25.45        25.45
  Book value...................                    33.97        35.86
Financial Position:
  Total assets.................                      819          768
  Current portion of long-term
   debt........................                        2            2
  Long-term debt, less current
   portion.....................                        6            6
  Stockholders' equity (7).....                      372          321
  Formula value (6)............
<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 three months ended March 31, 1995, respectively. The pro forma
     financial position data as of March 31, 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 March 31, 1995 was $355 million.
</TABLE>

                                       39
<PAGE>
              SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            KIEWIT DIVERSIFIED GROUP

<TABLE>
<CAPTION>
                                                                                                        PRO FORMA (1)
                                                                                          -----------------------------------------
                                                        HISTORICAL
                                  ------------------------------------------------------  YEAR ENDED DECEMBER      THREE MONTHS
                                                                           THREE MONTHS                           ENDED MARCH 31,
                                                                           ENDED MARCH         31, 1994                1995
                                            FISCAL YEAR ENDED                  31,        -------------------   -------------------
                                  --------------------------------------  --------------  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)...................  $  246  $  252  $  352  $  408  $  821  $  162  $  257   $  534     $  534     $  139     $  139
  Earnings before cumulative
   effect of change in
   accounting principle (4).....      51      26      81     181      33      25     (24)     102        103         17         17
  Net earnings (4)..............      23     418      99     181      33      25     (24)     102        103         17         17
Per Common Share (5):
  Earnings from continuing
   operations before cumulative
   effect of change in
   accounting principle.........    2.20    1.26    4.00    9.08    1.63    1.21   (1.14)    4.73       4.63       0.75       0.74
  Net earnings..................    1.03   20.30    4.92    9.08    1.63    1.21   (1.14)    4.73       4.63       0.75       0.74
  Dividends (6)(7)..............    0.70    0.70    1.95    0.50    --      --      --      --         --         --         --
  Stock price (8)...............   35.00   47.85   50.65   59.40   60.25   59.40   60.25                          42.20      42.85
  Book value....................   35.75   47.93   50.75   59.52   60.36   60.17   59.85                          42.18      42.83
Financial Position:
  Total assets..................   2,204   1,801   1,709   2,759   3.549           3,575                          2,097      2,148
  Current portion of long-term
   debt (8).....................      16       8       1      11      30              31                             11         11
  Long-term debt, less current
   portion (8)..................     255      97      18     452     899             922                            360        360
  Stockholders' equity (9)......     835     996   1,021   1,191   1,231           1,272                            953      1,004
  Formula value (8).............     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 three months ended March 31, 1995, respectively. The pro forma
     financial position data as of March 31, 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)  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.
(4)  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%.
(5)  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.
(6)  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  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.
(7)  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.
(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 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 March 31, 1995 was $1.28
     billion.
</TABLE>

                                       40
<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                        THREE MONTHS
                                    -----------------------------------------------------------      ENDED
                                    1990 (1)   1991 (2)      1992         1993       1994 (3)    MARCH 31, 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       $103,788
  Network systems integration.....      1,721     14,065       61,122       71,063       58,040         14,552
                                    ---------  ---------  -----------  -----------  -----------  --------------
    Total.........................     10,672     37,223      108,707      141,111      286,747        118,340
Costs and expenses:
  Operating expenses..............     13,971     33,963       76,667      102,905      273,431        119,882
  Depreciation and amortization...      7,990     11,761       20,544       34,670       73,869         29,073
  General and administrative
   expenses.......................     11,590     18,429       23,267       34,989       75,576         25,941
                                    ---------  ---------  -----------  -----------  -----------  --------------
    Total.........................     33,551     64,153      120,478      172,564      422,876        174,896
                                    ---------  ---------  -----------  -----------  -----------  --------------
Loss from operations..............    (22,879)   (26,930)     (11,771)     (31,453)    (136,129)       (56,556 )
Other income (expense) net (4)....     (8,052)    (1,314)        (792)       8,464      (17,175)        (7,252 )
                                    ---------  ---------  -----------  -----------  -----------  --------------
Loss before income taxes..........    (30,931)   (28,244)     (12,563)     (22,989)    (153,304)       (63,808 )
Income tax benefit (expense)......     --         --             (566)       7,220        2,103           (100 )
                                    ---------  ---------  -----------  -----------  -----------  --------------
  Net loss........................   $(30,931)  $(28,244)    $(13,129)    $(15,769)   $(151,201)     $ (63,908 )
                                    ---------  ---------  -----------  -----------  -----------  --------------
                                    ---------  ---------  -----------  -----------  -----------  --------------
Loss per share (5) ...............                            $(0.30)      $(0.30)      $(2.42)         $(0.99)
                                                          -----------  -----------  -----------  --------------
                                                          -----------  -----------  -----------  --------------
Number of shares (5)..............                         44,085,000   52,882,000   62,437,000     64,365,000
                                                          -----------  -----------  -----------  --------------
                                                          -----------  -----------  -----------  --------------
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)    $  (27,483 )
  Capital expenditures, including
   acquisitions of businesses, net
   of cash acquired...............     39,140     92,411      110,171      128,651      576,711        106,665

STATISTICAL DATA (8):
  Circuits in service (9).........    173,958    465,420      589,130      947,391    1,713,430      1,964,872
  Buildings connected.............        226        695        1,101        1,583        2,754          3,284
  Route miles (10)................        127        373          858        1,298        2,405          2,616
  Fiber miles (11)................     10,359     22,982       38,595       62,154      107,919        122,074
  Switches........................     --         --          --                 1           12             12

BALANCE SHEET DATA:
  Networks and equipment..........   $ 82,451   $159,751     $243,243     $370,334   $  787,453     $  897,920
  Total assets....................    102,959    204,819      363,299      906,937    1,584,546      1,554,945
  Long-term debt, less current
   portion........................     17,849      7,659          169          143      548,333        560,688
  Stockholders' equity............    (36,739)   162,538      298,516      811,105      770,103        719,610
<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>

                                       41
<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 three  months
     ended  March 31,  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
     $63,808,000, 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
     cash flow for the periods. 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>

                                       42
<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)   approximately  24.8 shares  of Class  C Stock  and approximately 24.8
    shares of Class D Stock for each $1,000 principal amount of each outstanding
    1990 Series Convertible Debenture due October 31, 2000,

    (iii)  approximately 23 shares of Class C Stock and approximately 23  shares
    of  Class D Stock for each $1,000  principal amount of each outstanding 1991
    Series Convertible Debenture due October 31, 2001, and

    (iv)  approximately 19.96 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 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
[              ], 1995 unless extended as described herein.

    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  to the January  1, 1995  conversion of Class  C Stock into
Class D Stock pursuant to the PKS Certificate of Incorporation (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). 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 (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.

    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 or Defer Acceptance of Tendered Exchangeable Securities."

                                       43
<PAGE>
    The   Exchange  Offer  is  not  conditioned   upon  any  minimum  amount  of
Exchangeable Securities being tendered for exchange. However, the Exchange Offer
is subject to certain other conditions. See "The Exchange Offer -- Conditions to
the Exchange Offer."

    As of June 23, 1995, there were  884,000 shares of Class B Stock issued  and
outstanding,  held by four holders of record, 13,945,425 shares of Class C Stock
issued and  outstanding, held  by 1,256  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, $120,000 principal amount of 1990 Series Convertible Debentures, $375,000
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,  approximately
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  or convert to Class D  Stock within the next few  years
pursuant  to the  PKS Certificate  of Incorporation.  Mr. Julian's  intention to
tender Class C Stock reflects the fact that his 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 all holders of Exchangeable Debentures to tender such debentures
pursuant to the Exchange Offer.

    This  Prospectus and the Letter 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 [              ], 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." 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, between  the tendering  securityholder
and PKS upon the terms and subject to the conditions of the Exchange Offer.

                                       44
<PAGE>
    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. and the
holder so  directs in  such holder's  Letter of  Transmittal, 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  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   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 or defer  acceptance of  tendered
Exchangeable  Securities. The Exchange  Date will be the  Expiration Date or, in
the event PKS shall defer  acceptance of tendered Exchangeable Securities,  such
later date and time at which PKS shall accept tenders of Exchangeable Securities
pursuant to the Exchange Offer. Exchange of the Exchangeable Securities accepted
for   exchange   pursuant   to   the   Exchange   Offer   will   be   made  only

                                       45
<PAGE>
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  either  extends  the  Expiration  Date  or  defers its
acceptance of Exchangeable Securities for  exchange, 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.

CONDITIONS TO THE EXCHANGE OFFER

    Notwithstanding any  other  provisions of  the  Exchange Offer  and  without
prejudice  to PKS's other rights under the  Exchange Offer, PKS shall not accept
for exchange any Exchangeable Securities  unless the MFS Recapitalization  shall
have  been approved by a  majority of the holders of  MFS Common Stock voting at
the MFS  1995 annual  stockholders meeting,  presently expected  to be  held  on
[               ], 1995. This condition may not be waived, and if such condition
is not satisfied, the Exchange Offer  will not be consummated regardless of  the
circumstances surrounding the nonfulfillment of such condition.

                                       46
<PAGE>
    In  connection with obtaining  approval of the holders  of MFS Common Stock,
PKS has agreed to vote 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  may be
outstanding) present in person or  by proxy at the  meeting vote. Thus, the  MFS
Recapitalization  will  be approved  only  if supported  by  a majority  of such
non-PKS stockholders of MFS.

    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 events described above will be final
and  binding  upon  all  parties.  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 OR DEFER ACCEPTANCE
OF TENDERED EXCHANGEABLE SECURITIES

    PKS  expressly reserves  the right to  defer acceptance for  exchange of any
Exchangeable Securities or  to abandon  the Exchange  Offer and  not accept  for
exchange  any Exchangeable Securities  if the PKS  Board of Directors determines
for any reason that such deferral or  abandonment would 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 Spin-off -- Conditions 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 conditions  described under  "The Exchange  Offer --  Conditions 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.

    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. If PKS  modifies the terms  of the  Exchange
Offer,  extends the period  of time during  which the Exchange  Offer is open or
defers its acceptance  of Exchangeable  Securities for  exchange, 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.

                                       47
<PAGE>
    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 and each
    holder of Exchangeable Debentures who elects to participate in that exchange
    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, PKS  has been advised  by its regular  outside
tax  counsel, Sutherland, Asbill & Brennan, that, in their opinion, 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:

        (1)  PKS and each holder of Exchangeable Stock who elects to participate
    in the  Exchange Offer  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  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

                                       48
<PAGE>
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  conditions
described  under "The Spin-off  -- Conditions to  the Spin-off; Right  of PKS to
Abandon, Defer or Modify the Spin-off"  are 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 effected on the Spin-off Date  to holders of record of Class D
Stock on such date, including Class D  Stock issued in the Exchange Offer.  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 of
the Exchange Offer. 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  once  the  Exchange  Offer  is
consummated, the Spin-off will be consummated promptly thereafter.

    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 two  to three weeks  in delivery  of the certificates
representing Spin-off Stock might occur.

    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,

                                       49
<PAGE>
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 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 industries  in  which its  businesses  participate and
general economic and market  conditions. On [                  ], 1995 the  last
reported  sale price of the MFS Common  Stock as reported by the Nasdaq National
Market was $[       ].  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."

                                       50
<PAGE>
    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  a  significant portion  of  the current  Class  D Formula  Value is
attributable to MFS,  the Class D  Formula Value will  be significantly  reduced
when  the Spin-off  is consummated. 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 Stock  under  the Company's
Certificate of  Incorporation,  I.E., the  Class  D  Per Share  Price,  will  be
significantly  reduced. See "Overview -- The Spin-off." Furthermore, 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  Stock  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.

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

    PKS will not  consummate the  Spin-off unless the  MFS Recapitalization  has
been approved by the holders of a majority of MFS Common Stock voting at the MFS
1995  annual stockholders meeting. Further, 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  any of  the foregoing
conditions 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,  once  the Exchange  Offer  has  been  consummated, the
Spin-off will be consummated promptly thereafter.

                                       51
<PAGE>
    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  any  of  the
foregoing  conditions  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).

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. 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.

    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 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

                                       52
<PAGE>
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,  PKS has been advised by  Sutherland,
Asbill  & Brennan  that, in their  opinion, 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");

        (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

                                       53
<PAGE>
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 treat any 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.

                              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), and 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 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. In  addition, FirsTier  Bank, N.A.,  the trustee
under

                                       54
<PAGE>
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.

    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>

                                       55
<PAGE>
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 has been nominated by management of MFS
to be 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 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.

                                       56
<PAGE>
    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. The  MFS
Recapitalization  is subject to the approval of the MFS common stockholders. See
"The Exchange Offer -- Conditions to the Exchange Offer."

    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. 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.

    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).

    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 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.

    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 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.

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<PAGE>
                              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
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.

                                       58
<PAGE>
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 resolved to submit  to
the  MFS stockholders for  approval at the 1995  MFS annual stockholders meeting
which is presently expected to be held on  [             ], 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 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. If the  MFS
Recapitalization  is 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  and subsequently consummated, 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 has agreed that,
if the MFS  Recapitalization is approved  by the non-PKS  holders of MFS  Common
Stock  as described herein, PKS will vote all  of the shares of MFS Common Stock
owned or controlled  by it in  favor of the  proposed amendments, thus  assuring
their  adoption. 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  the shareholder rights plan, would  be implemented only upon consummation of
the Spin-off.

    Each of the  foregoing proposals  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.

                                       59
<PAGE>
                           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  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

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<PAGE>
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.

    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

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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 B Stock and  Class C Stock may  be owned by any  one
employee  and  certain transferees  at any  time, with  the exception  of Walter
Scott, Jr., Chairman of the  Board and Chief Executive  Officer of PKS, and  his
authorized  transferees who 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

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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  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

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<PAGE>
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.

    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.

    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

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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 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

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<PAGE>
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 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

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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.

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 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

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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 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.

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<PAGE>
    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.

    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.  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 (an  effective conversion  rate  of
0.0231884  shares of MFS  Common Stock for  each share of  MFS Preferred Stock).
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. 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

                                       69
<PAGE>
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.

    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.

                                       70
<PAGE>
                              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.

    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.

                                       71
<PAGE>
    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.

                                       72
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS

<TABLE>
<CAPTION>
Report of Independent Accountants for Peter Kiewit Sons', Inc. and Subsidiaries......        F-3
<S>                                                                                    <C>
Peter Kiewit Sons', Inc. and Subsidiaries Pro Forma Consolidated Condensed Statement
 of Operations.......................................................................        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
 Operations..........................................................................       F-11
Peter Kiewit 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 Operations..........       F-18
Peter Kiewit 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. Management
believes Scenario 1 is more likely.

    The pro forma condensed statements of operations for the three months  ended
March  31,  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 March 31, 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 March 31, 1995 and selected
exhibits thereto, all of which are incorporated herein by reference.

                                      F-2
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS

The PKS 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 operations of Peter Kiewit Sons', Inc. for the year ended December
31, 1994.  The  pro forma  consolidated  condensed statement  of  operations  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 March  31, 1995  and the  pro forma  consolidated condensed
statement of  operations  for  the  three  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
operations 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 March  31, 1995, and  the pro forma  consolidated
condensed  statement of operations for the three 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 March 31, 1995, and  the pro forma consolidated condensed statement
of operations for the three months then ended.

                                          COOPERS & LYBRAND L.L.P.

Omaha, Nebraska
June 9, 1995

                                      F-3
<PAGE>
                   PETER KIEWIT SONS', INC. AND SUBSIDIARIES
           PRO FORMA CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1994
                     AND THREE MONTHS ENDED MARCH 31, 1995
(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)
<TABLE>
<CAPTION>
                                             YEAR ENDED DECEMBER 31, 1994
                                -------------------------------------------------------     THREE MONTHS ENDED MARCH 31, 1995
                                                             OTHER                       ---------------------------------------
                                                          ADJUSTMENTS                                                 OTHER
                                HISTORICAL      MFS        (NOTE 2)      PKS PRO FORMA   HISTORICAL      MFS       ADJUSTMENTS
                                -----------  ---------  ---------------  --------------  -----------  ---------     (NOTE 2)
                                                                                                                 ---------------
                                                        (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)            (UNAUDITED)
<S>                             <C>          <C>        <C>              <C>             <C>          <C>        <C>
Revenue.......................  $     2,991  $     287   $    --         $      2,704    $       681  $     118   $    --
Cost of Revenue...............       (2,650)      (342)       --               (2,308)          (636)      (149)       --
                                -----------  ---------         ---       --------------  -----------  ---------         ---
                                        341        (55)       --                  396             45        (31)       --
General and Administrative
 Expenses.....................         (311)       (81)       --                 (230)           (81)       (26)       --
                                -----------  ---------         ---       --------------  -----------  ---------         ---
Operating Earnings (Loss).....           30       (136)       --                  166            (36)       (57)       --
Other Income (Expense):
  Gain on Subsidiary's Stock
   Transactions, net..........           54     --             (54)(a)        --                   3     --              (3    )(a)
  Investment Income, net......           67         24      --                     43             18          3      --
  Interest Expense, net.......          (79)       (41)     --(b)                 (38  )         (27)        (9)     --(b)
  Other, net..................           15     --          --                     15              7         (1)     --
                                -----------  ---------         ---       --------------  -----------  ---------         ---
                                         57        (17)        (54     )           20              1         (7)         (3    )
                                -----------  ---------         ---       --------------  -----------  ---------         ---
Earnings (Loss) before Income
 Taxes and Minority Interest
 in Net Losses (Gains) of
 Subsidiaries.................           87       (153)        (54     )          186            (35)       (64)         (3    )
Provision for Income Taxes....          (27)         2          19(c)             (10  )         (10)    --               1(c)
Minority Interest in Net
 Losses (Gains) of
 Subsidiaries.................           50     --             (49      (d)            1          19     --             (22    )(d)
                                -----------  ---------         ---       --------------  -----------  ---------         ---
Net Earnings (Loss)...........  $       110  $    (151) $      (84     ) $        177    $       (26) $     (64) $      (24    )
                                -----------  ---------         ---       --------------  -----------  ---------         ---
                                -----------  ---------         ---       --------------  -----------  ---------         ---
Earnings (Loss) Attributable
 to
  Class B & C Stock...........  $        77                              $         75    $        (2)
                                -----------                              --------------  -----------
                                -----------                              --------------  -----------
  Class D Stock...............  $        33                              $        102    $       (24)
                                -----------                              --------------  -----------
                                -----------                              --------------  -----------
Earnings (Loss) Per Common and
 Common Equivalent Share:
  Class B & C.................  $      4.92                              $       5.88    $      (.16)
                                -----------                              --------------  -----------
                                -----------                              --------------  -----------
  Class D.....................  $      1.63                              $       4.73    $     (1.14)
                                -----------                              --------------  -----------
                                -----------                              --------------  -----------
Weighted Average Shares
 Outstanding:
  Class B & C.................   15,697,724                                12,757,653  (e)  13,909,422
                                -----------                              --------------  -----------
                                -----------                              --------------  -----------
  Class D.....................   20,438,806                                21,636,604  (e)  21,265,769
                                -----------                              --------------  -----------
                                -----------                              --------------  -----------

<CAPTION>

                                PKS PRO FORMA
                                --------------

<S>                             <C>
Revenue.......................  $        563
Cost of Revenue...............          (487)
                                --------------
                                          76
General and Administrative
 Expenses.....................           (55)
                                --------------
Operating Earnings (Loss).....            21
Other Income (Expense):
  Gain on Subsidiary's Stock
   Transactions, net..........       --
  Investment Income, net......            15
  Interest Expense, net.......           (18  )
  Other, net..................             8
                                --------------
                                           5
                                --------------
Earnings (Loss) before Income
 Taxes and Minority Interest
 in Net Losses (Gains) of
 Subsidiaries.................            26
Provision for Income Taxes....            (9  )
Minority Interest in Net
 Losses (Gains) of
 Subsidiaries.................            (3  )
                                --------------
Net Earnings (Loss)...........  $         14
                                --------------
                                --------------
Earnings (Loss) Attributable
 to
  Class B & C Stock...........  $         (3  )
                                --------------
                                --------------
  Class D Stock...............  $         17
                                --------------
                                --------------
Earnings (Loss) Per Common and
 Common Equivalent Share:
  Class B & C.................  $       (.26  )
                                --------------
                                --------------
  Class D.....................  $        .75
                                --------------
                                --------------
Weighted Average Shares
 Outstanding:
  Class B & C.................    10,969,351  (e)
                                --------------
                                --------------
  Class D.....................    22,606,978  (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 OPERATIONS
                          YEAR ENDED DECEMBER 31, 1994
                     AND THREE MONTHS ENDED MARCH 31, 1995
(SCENARIO 2 ASSUMING 5 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

<TABLE>
<CAPTION>
                                                                                                     (UNAUDITED)
                                          YEAR ENDED DECEMBER 31, 1994                    THREE MONTHS ENDED MARCH 31, 1995
                                ------------------------------------------------   ------------------------------------------------
                                                       OTHER                                              OTHER
                                                    ADJUSTMENTS                                        ADJUSTMENTS
                                HISTORICAL    MFS    (NOTE 2)     PKS PRO FORMA    HISTORICAL    MFS    (NOTE 2)     PKS PRO FORMA
                                -----------  -----  -----------   --------------   -----------  -----  -----------   --------------
                                                          (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                             <C>          <C>    <C>           <C>              <C>          <C>    <C>           <C>
Revenue.......................  $     2,991  $ 287   $--          $    2,704       $       681  $ 118   $--          $      563
Cost of Revenue...............       (2,650)  (342)  --               (2,308)             (636)  (149)  --                 (487)
                                -----------  -----    ---         --------------   -----------  -----    ---         --------------
                                        341    (55)  --                  396                45    (31)  --                   76
General and Administrative
 Expenses.....................         (311)   (81)  --                 (230)              (81)   (26)  --                  (55)
                                -----------  -----    ---         --------------   -----------  -----    ---         --------------
Operating Earnings (Loss).....           30   (136)  --                  166               (36)   (57)  --                   21
Other Income (Expenses):
  Gain on Subsidiary's Stock
   Transactions, net..........           54   --      (54)(a)         --                     3   --       (3)(a)         --
  Investment Income, net......           67     24   --                   43                18      3   --                   15
  Interest Expense, net.......          (79)   (41)  --  (b)             (38)              (27)    (9)  --  (b)             (18)
  Other, net..................           15   --     --                   15                 7     (1)  --                    8
                                -----------  -----    ---         --------------   -----------  -----    ---         --------------
                                         57    (17)   (54)                20                 1     (7)    (3)                 5
                                -----------  -----    ---         --------------   -----------  -----    ---         --------------
Earnings (Loss) before Income
 Taxes and Minority Interest
 in Net Losses (Gains) of
 Subsidiaries.................           87   (153)   (54)               186               (35)   (64)    (3)                26
Provision for Income Taxes....          (27)     2   19(c)               (10)              (10)  --      1(c)                (9)
Minority Interest in Net
 Losses (Gains) of
 Subsidiaries.................           50   --      (49)(d)              1                19   --      (22)(d)             (3)
                                -----------  -----    ---         --------------   -----------  -----    ---         --------------
Net Earnings (Loss)...........  $       110  $(151)  $(84)        $      177       $       (26) $ (64)  $(24)        $       14
                                -----------  -----    ---         --------------   -----------  -----    ---         --------------
                                -----------  -----    ---         --------------   -----------  -----    ---         --------------
Earnings (Loss) Attributable
 to:
  Class B & C Stock...........  $        77                       $       74       $        (2)                      $       (3)
                                -----------                       --------------   -----------                       --------------
                                -----------                       --------------   -----------                       --------------
  Class D.....................  $        33                       $      103       $       (24)                      $       17
                                -----------                       --------------   -----------                       --------------
                                -----------                       --------------   -----------                       --------------
Earnings (Loss) Per Common and
 Common Equivalent Share:
  Class B & C.................  $      4.92                       $     6.84       $      (.16)                      $     (.37)
                                -----------                       --------------   -----------                       --------------
                                -----------                       --------------   -----------                       --------------
  Class D.....................  $      1.63                       $     4.63       $     (1.14)                      $      .74
                                -----------                       --------------   -----------                       --------------
                                -----------                       --------------   -----------                       --------------
Weighted Average Shares
 Outstanding:
  Class B & C.................   15,697,724                       10,757,653(e)     13,909,422                        8,969,351(e)
                                -----------                       --------------   -----------                       --------------
                                -----------                       --------------   -----------                       --------------
  Class D.....................   20,438,806                       22,389,129(e)     21,265,769                       23,455,111(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)
                                 MARCH 31, 1995
(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)
                                     ASSETS

<TABLE>
<CAPTION>
                                                                                            ADJUSTMENTS      PKS
                                                                    HISTORICAL      MFS      (NOTE 3)     PRO FORMA
                                                                    -----------  ---------  -----------  -----------
<S>                                                                 <C>          <C>        <C>          <C>
CURRENT ASSETS:
  Cash and cash equivalents.......................................   $     392   $      44   $  --        $     348
  Marketable securities...........................................         706         205      --              501
  Receivables, net................................................         372          74      --              298
  Costs and earnings in excess of billings on uncompleted
   contracts......................................................         143          25      --              118
  Investment in construction joint ventures.......................          50      --          --               50
  Deferred income taxes...........................................          68      --          --               68
  Other...........................................................         102          44      --               58
                                                                    -----------  ---------  -----------  -----------
      Total Current Assets........................................       1,833         392      --            1,441
Property, Plant and Equipment, net................................       1,350         765      --              585
Investments.......................................................         425      --          --              425
Intangible Assets, net............................................         755         395      --              360
Other Assets......................................................          86           3      --               83
                                                                    -----------  ---------  -----------  -----------
                                                                     $   4,449   $   1,555   $  --        $   2,894
                                                                    -----------  ---------  -----------  -----------
                                                                    -----------  ---------  -----------  -----------

                                        LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
  Accounts payable................................................   $     338   $     131   $  --        $     207
  Current portion of long-term debt:
    Telecommunications............................................          28          19      --                9
    Other.........................................................           5      --              (1)(a)          4
  Accrued costs and billings in excess of revenue on uncompleted
   contracts......................................................         150          29      --              121
  Accrued insurance costs.........................................          71      --          --               71
  Other...........................................................         192          62          12(b)        142
                                                                    -----------  ---------  -----------  -----------
      Total Current Liabilities...................................         784         241          11          554
Long-term Debt, less current portion:
    Telecommunications............................................         845         561      --              284
    Other.........................................................          84      --              (2)(a)         82
Deferred Income Taxes.............................................         290      --             (93)(c)        197
Retirement Benefits...............................................          48      --          --               48
Accrued Reclamation Costs.........................................         105      --          --              105
Other Liabilities.................................................         137          24      --              113
Minority Interest.................................................         436          10        (240)(d)        186
Stockholders' Equity:
  Preferred stock.................................................      --          --          --           --
  Common stock....................................................
    Class B.......................................................      --          --          --           --
    Class C.......................................................           1      --          --                1
    Class D.......................................................           1      --          --                1
  Additional paid-in capital......................................         180      --               3(a)        183
  Foreign currency adjustment.....................................          (5)          2      --               (7)
  Net unrealized holding gains (losses)...........................           4          (2)     --                6
  Retained earnings...............................................       1,539         719         (12)(b)
                                                                                                    93(c)
                                                                                                   240(d)      1,141
                                                                    -----------  ---------  -----------  -----------
      Total Stockholders' Equity..................................       1,720         719         324        1,325
                                                                    -----------  ---------  -----------  -----------
                                                                     $   4,449   $   1,555   $  --        $   2,894
                                                                    -----------  ---------  -----------  -----------
                                                                    -----------  ---------  -----------  -----------
</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)
                                 MARCH 31, 1995
(SCENARIO 2 ASSUMING 5 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)
                                     ASSETS

<TABLE>
<CAPTION>
                                                                                             ADJUSTMENTS      PKS
                                                                        HISTORICAL    MFS     (NOTE 3)     PRO FORMA
                                                                        ----------   ------  -----------   ---------
                                                                                   (DOLLARS IN MILLIONS)
<S>                                                                     <C>          <C>     <C>           <C>
Current Assets
  Cash and cash equivalents...........................................    $  392     $   44   $--           $  348
  Marketable securities...............................................       706        205    --              501
  Receivables, net....................................................       372         74    --              298
  Cost and earnings in excess of billings and uncompleted contracts...       143         25    --              118
  Investment in construction joint ventures...........................        50       --      --               50
  Deferred income taxes...............................................        68       --      --               68
  Other...............................................................       102         44    --               58
                                                                        ----------   ------  -----------   ---------
Total Current Assets..................................................     1,833        392    --            1,441
Property, Plant and Equipment, net....................................     1,350        765    --              585
Investments...........................................................       425       --      --              425
Intangible Assets, net................................................       755        395    --              360
Other Assets..........................................................        86          3    --               83
                                                                        ----------   ------  -----------   ---------
                                                                          $4,449     $1,555   $--           $2,894
                                                                        ----------   ------  -----------   ---------
                                                                        ----------   ------  -----------   ---------
                                        LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
  Accounts payable....................................................    $  338     $  131   $--           $  207
  Current portion of long-term debt:
    Telecommunications................................................        28         19    --                9
    Other.............................................................         5       --        (1)(a)          4
  Accrued costs and billings in excess of revenue on uncompleted
   contracts..........................................................       150         29    --              121
  Accrued insurance costs.............................................        71       --      --               71
  Other...............................................................       192         62      12(b)         142
                                                                        ----------   ------  -----------   ---------
Total Current Liabilities.............................................       784        241      11            554
Long-term Debt, less current portion:
  Telecommunications..................................................       845        561    --              284
  Other...............................................................        84       --        (2)(a)         82
Deferred Income Taxes.................................................       290       --       (93)(c)        197
Retirement Benefits...................................................        48       --      --               48
Accrued Reclamation Costs.............................................       105       --      --              105
Other Liabilities.....................................................       137         24    --              113
Minority Interest.....................................................       436         10    (240)(d)        186
Stockholders' Equity:
  Preferred stock.....................................................     --          --      --            --
  Common Stock
    Class B...........................................................     --          --      --            --
    Class C...........................................................         1       --      --                1
    Class D...........................................................         1       --      --                1
  Additional paid-in capital..........................................       180       --         3(a)         183
  Foreign currency adjustment.........................................        (5)         2    --               (7)
  Net unrealized holding gains (losses)...............................         4         (2)   --                6
  Retained earnings...................................................     1,539        719     (12)(b)
                                                                                                 93(c)
                                                                                                240(d)       1,141
                                                                        ----------   ------  -----------   ---------
Total Stockholders' Equity............................................     1,720        719     324          1,325
                                                                        ----------   ------  -----------   ---------
                                                                          $4,449     $1,555   $--           $2,894
                                                                        ----------   ------  -----------   ---------
                                                                        ----------   ------  -----------   ---------
</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.

    Completion  of the Transactions has been assumed  to be as of March 31, 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
operations for the year ended December 31, 1994 and the three months ended March
31, 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 OPERATIONS PRO FORMA ADJUSTMENTS
    As described in Note 1, the historical consolidated statements of operations
for  PKS have been adjusted to remove the income and expenses 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 Operations  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 reflect the tax effect of the above adjustments.

    (d) Adjustment made to reverse the minority interest in the loss of MFS that
       would  not have been  recorded if the Transactions  were completed at the
       beginning of the periods.

    (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. 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.

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 of  MFS and to give effect to certain
other elements of the Transactions. The paid-in capital and retained earnings of
MFS have been combined and reflected  as retained earnings on the balance  sheet
of  MFS for purposes of this pro  forma presentation. The other adjustments made
in preparation of  the PKS Pro  Forma Consolidated Condensed  Balance Sheet  are
described below:

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

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

3.  BALANCE SHEET PRO FORMA ADJUSTMENTS (CONTINUED)
    (b) 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.

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

    (d) Adjustment made to record the reversal of the minority interest in MFS.

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.

5.  OTHER MATTERS
    In 1974, a subsidiary of the  Company ("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, titled WHITNEY BENEFITS, INC.  AND
PETER KIEWIT SONS' CO. V. THE UNITED STATES, 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
property ($60 million) plus interest. In 1991, the U.S. Court of Appeals for the
Federal Circuit affirmed the decision of  the Claims Court and 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 agreed to pay plaintiffs
$200 million and plaintiffs agreed to 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. Peter Kiewit
Sons' Co., a subsidiary of Kiewit Diversified Group Inc., received approximately
$135 million on June 2, 1995.

                                      F-9
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS

The PKS 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
operations  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 operations  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
March 31, 1995 and the pro forma condensed statement of operations for the three
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 operations
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  March 31, 1995,  and the pro  forma condensed statement  of
operations  for  the three  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 March 31, 1995,
and the pro forma  condensed statement of operations  for the three months  then
ended.

                                          COOPERS & LYBRAND L.L.P.

Omaha, Nebraska
June 9, 1995

                                      F-10
<PAGE>
                       KIEWIT CONSTRUCTION & MINING GROUP

                  PRO FORMA CONDENSED STATEMENTS OF OPERATIONS

                          YEAR ENDED DECEMBER 31, 1994
                     AND THREE MONTHS ENDED MARCH 31, 1995

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

<TABLE>
<CAPTION>
                                                                                         (UNAUDITED)
                                       YEAR ENDED DECEMBER 31, 1994           THREE MONTHS ENDED MARCH 31, 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  $      426    $  --        $       426
Cost of Revenue.................      (1,995)      --              (1,995)       (409)      --               (409)
                                  ----------       ------    ------------  ----------  -------------  ------------
                                         180       --                 180          17       --                 17
General and Administrative
 Expenses.......................        (121)      --                (121)        (32)      --                (32)
                                  ----------       ------    ------------  ----------  -------------  ------------
Operating Earnings (Loss).......          59       --                  59         (15)      --                (15)
Other Income (Expense):
  Investment Income, net........          13           (3)(a)           10          3           (1)(a)           2
  Interest Expense..............          (2)          --(b)           (2)         (1)          --(b)          (1)
  Other, net....................          46       --                  46          11       --                 11
                                  ----------       ------    ------------  ----------  -------------  ------------
                                          57           (3)             54          13           (1)            12
                                  ----------       ------    ------------  ----------  -------------  ------------
Earnings (Loss) before Income
 Taxes..........................         116           (3)            113          (2)          (1)            (3)
(Provision) Benefit for Income
 Taxes..........................         (39)           1(c)          (38)     --               --(c)      --
                                  ----------       ------    ------------  ----------  -------------  ------------
Net Earnings (Loss).............  $       77    $      (2)   $         75  $       (2)   $      (1)   $        (3)
                                  ----------       ------    ------------  ----------  -------------  ------------
                                  ----------       ------    ------------  ----------  -------------  ------------
Net Earnings (Loss) Per Common
 and Common Equivalent Share....  $     4.92                 $       5.88  $     (.16)                $      (.26)
                                  ----------                 ------------  ----------                 ------------
                                  ----------                 ------------  ----------                 ------------
Weighted Average Shares
 Outstanding....................  15,697,724                   12,757,653(d) 13,909,422                10,969,351(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 OPERATIONS
                          YEAR ENDED DECEMBER 31, 1994
                     AND THREE MONTHS ENDED MARCH 31, 1995
(SCENARIO 2 ASSUMING 5 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

<TABLE>
<CAPTION>
                                       YEAR ENDED DECEMBER 31, 1994           THREE MONTHS ENDED MARCH 31, 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  $      426    $  --        $       426
Cost of Revenue.................      (1,995)      --              (1,995)       (409)      --               (409)
                                  ----------       ------    ------------  ----------  -------------  ------------
                                         180       --                 180          17       --                 17
General and Administrative
 Expenses.......................        (121)      --                (121)        (32)      --                (32)
                                  ----------       ------    ------------  ----------  -------------  ------------
Operating Earnings (Loss).......          59       --                  59         (15)      --                (15)
Other Income (Expense):
  Investment Income, net........          13           (5)(a)            8          3           (1)(a)           2
  Interest Expense..............          (2)          --(b)           (2)         (1)          --(b)          (1)
  Other, net....................          46       --                  46          11       --                 11
                                  ----------       ------    ------------  ----------  -------------  ------------
                                          57           (5)             52          13           (1)            12
                                  ----------       ------    ------------  ----------  -------------  ------------
Earnings (Loss) before Income
 Taxes..........................         116           (5)            111          (2)          (1)            (3)
(Provision) Benefit for Income
 Taxes..........................         (39)           2(c)          (37)     --               --(c)      --
                                  ----------       ------    ------------  ----------  -------------  ------------
Net Earnings (Loss).............  $       77    $      (3)   $         74  $       (2)   $      (1)   $        (3)
                                  ----------       ------    ------------  ----------  -------------  ------------
                                  ----------       ------    ------------  ----------  -------------  ------------
Net Earnings (Loss) Per Common
 and Common Equivalent Share....  $     4.92                 $       6.84  $     (.16)                $      (.37 )
                                  ----------                 ------------  ----------                 ------------
                                  ----------                 ------------  ----------                 ------------
Weighted Average Shares
 Outstanding....................  15,697,724                   10,757,653(d) 13,909,422                 8,969,351 (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)
                                 MARCH 31, 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     $     (77)(a)   $       7
  Marketable securities......................................................          98        --                 98
  Receivables, net...........................................................         235        --                235
  Costs and earnings in excess of billings on uncompleted contracts..........         118        --                118
  Investment in construction joint ventures..................................          50        --                 50
  Deferred income taxes......................................................          54        --                 54
  Other......................................................................          18        --                 18
                                                                                    -----         -----          -----
    Total Current Assets.....................................................         657           (77)           580
Property, Plant and Equipment, net...........................................         150        --                150
Deferred Income Taxes........................................................           4        --                  4
Other Assets.................................................................          85        --                 85
                                                                                    -----         -----          -----
                                                                                $     896     $     (77)     $     819
                                                                                    -----         -----          -----
                                                                                    -----         -----          -----

                                          LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
  Accounts payable...........................................................   $     166     $  --          $     166
  Current portion of long-term debt..........................................           2        --                  2
  Accrued construction costs and billings in excess of revenue on uncompleted
   contracts.................................................................         113        --                113
  Accrued insurance costs....................................................          71        --                 71
  Other......................................................................          43        --                 43
                                                                                    -----         -----          -----
    Total Current Liabilities................................................         395        --                395
Long-term Debt, less current portion.........................................           7            (1)(b)           6
Other Liabilities............................................................          46        --                 46
Stockholders Equity:
  Common equity..............................................................         454           (77)(a)
                                                                                                      1(b)         378
  Foreign currency adjustment................................................          (6)       --                 (6)
  Unrealized holding gain (loss).............................................      --            --             --
                                                                                    -----         -----          -----
    Total Stockholders' Equity...............................................         448           (76)           372
                                                                                    -----         -----          -----
                                                                                $     896     $     (77)     $     819
                                                                                    -----         -----          -----
                                                                                    -----         -----          -----
</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)
                                 MARCH 31, 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......................................................          98          (44)(a)          54
  Receivables, net...........................................................         235        --                235
  Costs and earnings in excess of billings on uncompleted contracts..........         118        --                118
  Investment in construction joint ventures..................................          50        --                 50
  Deferred income taxes......................................................          54        --                 54
  Other......................................................................          18        --                 18
                                                                                    -----       ------           -----
    Total Current Assets.....................................................         657         (128)            529
Property, Plant and Equipment, net...........................................         150        --                150
Deferred Income Taxes........................................................           4        --                  4
Other Assets.................................................................          85        --                 85
                                                                                    -----       ------           -----
                                                                                $     896    $    (128)      $     768
                                                                                    -----       ------           -----
                                                                                    -----       ------           -----

                                          LIABILITIES AND STOCKHOLDERS' EQUITY

Current Liabilities:
  Accounts payable...........................................................  $      166   $   --         $        166
  Current portion of long-term debt..........................................           2       --                    2
  Accrued construction costs and billings in excess of revenue on uncompleted
   contracts.................................................................         113       --                  113
  Accrued insurance costs....................................................          71       --                   71
  Other......................................................................          43       --                   43
                                                                                    -----       ------            -----
    Total Current Liabilities................................................         395       --                  395
Long-term Debt, less current portion.........................................           7           (1    (b)            6
Other Liabilities............................................................          46       --                   46
Stockholders' Equity:
  Common equity..............................................................         454         (128    (a)
                                                                                                     1   (b)          327
  Foreign currency adjustment................................................          (6 )     --                   (6 )
  Unrealized holding gain (loss).............................................      --           --              --
                                                                                    -----       ------            -----
    Total Stockholders' Equity...............................................         448         (127   )          321
                                                                                    -----       ------            -----
                                                                               $      896   $     (128   ) $        768
                                                                                    -----       ------            -----
                                                                                    -----       ------            -----
</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 March 31, 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 operations for the year  ended
December 31, 1994 and the three months ended March 31, 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 OPERATIONS PRO FORMA ADJUSTMENTS
    As  described in  Note 1,  the historical  statements of  operations 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
Operations 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. 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.

    (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 PKS 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
operations 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
operations  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 March 31,
1995 and the pro  forma condensed statement of  operations for the three  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  operations
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  March 31, 1995,  and the pro  forma condensed statement of
operations for  the three  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 March 31, 1995,
and  the pro forma condensed  statement of operations for  the three months then
ended.

                                          COOPERS & LYBRAND L.L.P.

Omaha, Nebraska
June 9, 1995

                                      F-17
<PAGE>
                            KIEWIT DIVERSIFIED GROUP
                  PRO FORMA CONDENSED STATEMENTS OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1994
                     AND THREE MONTHS ENDED MARCH 31, 1995
(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)
<TABLE>
<CAPTION>
                                                                                                       (UNAUDITED)
                                             YEAR ENDED DECEMBER 31, 1994                   THREE MONTHS ENDED MARCH 31, 1995
                                -------------------------------------------------------  ---------------------------------------
                                                             OTHER                                                    OTHER
                                                          ADJUSTMENTS                                              ADJUSTMENTS
                                HISTORICAL      MFS        (NOTE 2)        PRO FORMA     HISTORICAL      MFS        (NOTE 2)
                                -----------  ---------  ---------------  --------------  -----------  ---------  ---------------
                                                        (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                             <C>          <C>        <C>              <C>             <C>          <C>        <C>
Revenues......................  $       821  $     287    $   --         $        534    $       257  $     118    $   --
Cost of Revenue...............         (660)      (342)       --                 (318)          (229)      (149)       --
                                -----------  ---------          ---      --------------  -----------  ---------          ---
                                        161        (55)       --                  216             28        (31)       --
General and Administration
 Expenses.....................         (219)       (81)       --                 (138)           (57)       (26)       --
                                -----------  ---------          ---      --------------  -----------  ---------          ---
Operating Earnings (Loss).....          (58)      (136)       --                   78            (29)       (57)       --
Other Income (Expenses):
  Gain on Subsidiary's Stock
  Transactions, net...........           54     --              (54)(a)        --                  3     --               (3)(a)
  Investment Income, net......           54         24            3(b)             33             15          3            1(b)
  Interest Expense, net.......          (77)       (41)          --(c)            (36)           (26)        (9)          --(c)
  Other, net..................           (2)    --            --                   (2)             4         (1)       --
                                -----------  ---------          ---      --------------  -----------  ---------          ---
                                         29        (17)         (51)               (5)            (4)        (7)          (2)
                                -----------  ---------          ---      --------------  -----------  ---------          ---
Earnings (Loss) before Income
Taxes and Minority Interest in
 Net Losses (Gains) of
 Subsidiaries.................          (29)      (153)         (51)               73            (33)       (64)          (2)
Benefit (Provision) for Income
 Taxes........................           12          2           18(d)             28            (10)    --                1(d)
Minority Interest in Net
 Losses (Gains) of
 Subsidiaries.................           50     --              (49)(e)             1             19     --              (22)(e)
                                -----------  ---------          ---      --------------  -----------  ---------          ---
Net Earnings (Loss)...........  $        33  $    (151)   $     (82)     $        102    $       (24) $     (64)   $     (23)
                                -----------  ---------          ---      --------------  -----------  ---------          ---
                                -----------  ---------          ---      --------------  -----------  ---------          ---
Net Earnings (Loss) Per Common
 and Common Equivalent
 Share........................        $1.63                                     $4.73         $(1.14)
Weighted Average Shares
 Outstanding..................   20,438,805                                21,636,604(f)  21,265,769
                                -----------                              --------------  -----------
                                -----------                              --------------  -----------

<CAPTION>

                                  PRO FORMA
                                --------------

<S>                             <C>
Revenues......................  $        139
Cost of Revenue...............           (80)
                                --------------
                                          59
General and Administration
 Expenses.....................           (31)
                                --------------
Operating Earnings (Loss).....            28
Other Income (Expenses):
  Gain on Subsidiary's Stock
  Transactions, net...........        --
  Investment Income, net......            13
  Interest Expense, net.......           (17)
  Other, net..................             5
                                --------------
                                           1
                                --------------
Earnings (Loss) before Income
Taxes and Minority Interest in
 Net Losses (Gains) of
 Subsidiaries.................            29
Benefit (Provision) for Income
 Taxes........................            (9)
Minority Interest in Net
 Losses (Gains) of
 Subsidiaries.................            (3)
                                --------------
Net Earnings (Loss)...........  $         17
                                --------------
                                --------------
Net Earnings (Loss) Per Common
 and Common Equivalent
 Share........................         $0.75
Weighted Average Shares
 Outstanding..................    22,606,978(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 OPERATIONS
                          YEAR ENDED DECEMBER 31, 1994
                     AND THREE MONTHS ENDED MARCH 31, 1995
                    (SCENARIO 2 ASSUMING 5 MILLION SHARES OF
                EXCHANGEABLE STOCK EXCHANGED FOR CLASS D STOCK)
<TABLE>
<CAPTION>
                                                                                                     THREE MONTHS ENDED MARCH
                                                        YEAR ENDED DECEMBER 31, 1994                         31, 1995
                                         ----------------------------------------------------------  ------------------------
                                                                        OTHER
                                                                     ADJUSTMENTS
                                          HISTORICAL       MFS        (NOTE 2)         PRO FORMA      HISTORICAL       MFS
                                         -------------  ---------  ---------------  ---------------  -------------  ---------
                                                           (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS) (UNAUDITED)
<S>                                      <C>            <C>        <C>              <C>              <C>            <C>
Revenue................................    $     821    $     287    $   --            $     534       $     257    $     118
Cost of Revenue........................         (660)        (342)       --                 (318)           (229)        (149)
                                              ------    ---------          ---            ------          ------    ---------
                                                 161          (55)       --                  216              28          (31)
General and Administrative Expenses....         (219)         (81)       --                 (138)            (57)         (26)
                                              ------    ---------          ---            ------          ------    ---------
    Operating Earnings (Loss)..........          (58)        (136)       --                   78             (29)         (57)
Other Income (Expense):
  Gain on Subsidiary's Stock
   Transactions, net...................           54       --              (54)(a)        --                   3       --
  Investment Income, net...............           54           24            5(b)             35              15            3
  Interest Expense, net................          (77)         (41)          --(c)            (36)            (26)          (9)
  Other, net...........................           (2)      --            --                   (2)              4           (1)
                                              ------    ---------          ---            ------          ------    ---------
                                                  29          (17)         (49)               (3)             (4)          (7)
                                              ------    ---------          ---            ------          ------    ---------

Earnings (Loss) before Income Taxes and
 Minority Interest in Net Losses
 (Gains) of Subsidiaries...............          (29)        (153)         (49)               75             (33)         (64)
Benefit (Provision) for Income Taxes...           12            2           17(d)             27             (10)      --
Minority Interest in Net Losses (Gains)
 of Subsidiaries.......................           50       --              (49)(e)             1              19       --
                                              ------    ---------          ---            ------          ------    ---------
    Net Earnings (Loss)................    $      33    $    (151)   $     (81)        $     103       $     (24)   $     (64)
                                              ------    ---------          ---            ------          ------    ---------
                                              ------    ---------          ---            ------          ------    ---------
Net Earnings (Loss) Per Common and
 Common Equivalent Share...............    $    1.63                                   $    4.63       $   (1.14)
                                              ------                                      ------          ------
                                              ------                                      ------          ------
Weighted Average Shares Outstanding....   20,438,806                                22,389,129(f)     21,265,769

<CAPTION>

                                             OTHER
                                          ADJUSTMENTS
                                           (NOTE 2)        PRO FORMA
                                         -------------  ---------------

<S>                                      <C>            <C>
Revenue................................    $  --           $     139
Cost of Revenue........................       --                 (80)
                                         -------------         -----
                                              --                  59
General and Administrative Expenses....       --                 (31)
                                         -------------         -----
    Operating Earnings (Loss)..........       --                  28
Other Income (Expense):
  Gain on Subsidiary's Stock
   Transactions, net...................           (3)(a)       --
  Investment Income, net...............            1(b)           13
  Interest Expense, net................           --(c)          (17)
  Other, net...........................       --                   5
                                         -------------         -----
                                                  (2)              1
                                         -------------         -----
Earnings (Loss) before Income Taxes and
 Minority Interest in Net Losses
 (Gains) of Subsidiaries...............           (2)             29
Benefit (Provision) for Income Taxes...            1(d)           (9)
Minority Interest in Net Losses (Gains)
 of Subsidiaries.......................          (22)(e)           (3)
                                         -------------         -----
    Net Earnings (Loss)................    $     (23)      $      17
                                         -------------         -----
                                         -------------         -----
Net Earnings (Loss) Per Common and
 Common Equivalent Share...............                    $    0.74
                                                               -----
                                                               -----
Weighted Average Shares Outstanding....                 23,455,111(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)
                                 MARCH 31, 1995
(SCENARIO 1 ASSUMING 3 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                                            ADJUSTMENTS
                                                                    HISTORICAL      MFS      (NOTE 3)     PRO FORMA
                                                                    -----------  ---------  -----------  -----------
                                                                                 (DOLLARS IN MILLIONS)
<S>                                                                 <C>          <C>        <C>          <C>
Current Assets:
  Cash and cash equivalents.......................................   $     308   $      44   $      77(a)  $     341
  Marketable securities...........................................         608         205      --              403
  Receivable, net.................................................         150          74      --               76
  Deferred income taxes...........................................          14      --          --               14
  Other...........................................................         109          69                       40
                                                                    -----------  ---------  -----------  -----------
    Total Current Assets..........................................       1,189         392          77          874
Property, Plant and Equipment, net................................       1,200         765      --              435
Investments.......................................................         370      --          --              370
Intangible Assets, net............................................         740         395      --              345
Other Assets......................................................          76           3      --               73
                                                                    -----------  ---------  -----------  -----------
                                                                     $   3,575   $   1,555   $      77    $   2,097
                                                                    -----------  ---------  -----------  -----------
                                                                    -----------  ---------  -----------  -----------

                                        LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
  Accounts payable................................................   $     172   $     131   $  --        $      41
  Current portion of long-term debt:
    Telecommunications............................................          28          19      --                9
    Other.........................................................           3      --              (1)(b)          2
  Accrued costs and billings in excess of revenue on uncompleted
   contracts......................................................          37          29      --                8
  Accrued reclamation and other mining costs......................          17      --          --               17
  Other...........................................................         145          62          12(c)         95
                                                                    -----------  ---------  -----------  -----------
    Total Current Liabilities.....................................         402         241          11          172
Long-term Debt, less current portion:
  Telecommunications..............................................         845         561      --              284
  Other...........................................................          77      --              (1)(b)         76
Deferred Income Taxes.............................................         294      --             (93)(d)        201
Retirement Benefits...............................................          48      --          --               48
Accrued Reclamation Costs.........................................         104      --          --              104
Other Liabilities.................................................          97          24      --               73
Minority Interest.................................................         436          10        (240)(e)        186

Stockholders' Equity:
  Common equity...................................................       1,267         719          77(a)
                                                                                                     2(b)
                                                                                                   (12)(c)
                                                                                                    93(d)
                                                                                                   240(e)        948
  Foreign currency adjustment.....................................           1           2      --               (1)
  Net unrealized holding gain (loss)..............................           4          (2)     --                6
                                                                    -----------  ---------  -----------  -----------
    Total Stockholders' Equity....................................       1,272         719         400          953
                                                                    -----------  ---------  -----------  -----------
                                                                     $   3,575   $   1,555   $      77    $   2,097
                                                                    -----------  ---------  -----------  -----------
                                                                    -----------  ---------  -----------  -----------
</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)
                                 MARCH 31, 1995
(SCENARIO 2 ASSUMING 5 MILLION SHARES OF EXCHANGEABLE STOCK EXCHANGED FOR CLASS
                                    D STOCK)

                                       ASSETS

<TABLE>
<CAPTION>
                                                                                            ADJUSTMENTS
                                                                    HISTORICAL      MFS      (NOTE 3)     PRO FORMA
                                                                    -----------  ---------  -----------  -----------
                                                                                 (DOLLARS IN MILLIONS)
<S>                                                                 <C>          <C>        <C>          <C>
Current Assets:
  Cash and cash equivalents.......................................   $     308   $      44   $      84(a)  $     348
  Marketable securities...........................................         608         205          44(a)        447
  Receivable, net.................................................         150          74      --               76
  Deferred income taxes...........................................          14      --          --               14
  Other...........................................................         109          69                       40
                                                                    -----------  ---------  -----------  -----------
Total Current Assets..............................................       1,189         392         128          925
Property, Plant and Equipment, net................................       1,200         765      --              435
Investments.......................................................         370      --          --              370
Intangible Assets, net............................................         740         395      --              345
Other Assets......................................................          76           3      --               73
                                                                    -----------  ---------  -----------  -----------
                                                                     $   3,575   $   1,555   $     128    $   2,148
                                                                    -----------  ---------  -----------  -----------
                                                                    -----------  ---------  -----------  -----------
                                        LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
  Accounts payable................................................   $     172   $     131   $  --        $      41
  Current portion of long-term debt:..............................
    Telecommunications............................................          28          19      --                9
    Other.........................................................           3      --              (1)(b)          2
  Accrued costs and billings in excess of revenue on uncompleted
   contracts......................................................          37          29      --                8
  Accrued reclamation and other mining costs......................          17      --          --               17
  Other...........................................................         145          62          12(c)         95
                                                                    -----------  ---------  -----------  -----------
Total Current Liabilities.........................................         402         241          11          172
Long-term Debt, less current portion:.............................
  Telecommunications..............................................         845         561      --              284
  Other...........................................................          77      --              (1)(b)         76
Deferred Income Taxes.............................................         294      --             (93)(d)        201
Retirement Benefits...............................................          48      --          --               48
Accrued Reclamation Costs.........................................         104      --          --              104
Other Liabilities.................................................          97          24      --               73
Minority Interest.................................................         436          10        (240)(e)        186
Stockholders' Equity:
  Common equity...................................................       1,267         719         128(a)
                                                                                                     2(b)
                                                                                                   (12)(c)
                                                                                                    93(d)
                                                                                                   240(e)        999
  Foreign currency adjustment.....................................           1           2      --               (1)
  Net unrealized holding gain (loss)..............................           4          (2)     --                6
                                                                    -----------  ---------  -----------  -----------
Total Stockholders' Equity........................................       1,272         719         451        1,004
                                                                    -----------  ---------  -----------  -----------
                                                                     $   3,575   $   1,555   $     128    $   2,148
                                                                    -----------  ---------  -----------  -----------
                                                                    -----------  ---------  -----------  -----------
</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.

    Completion  of the Transactions has been assumed  to be as of March 31, 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 operations for the year  ended
December 31, 1994 and the three months ended March 31, 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 OPERATIONS PRO FORMA ADJUSTMENTS
    As  described in  Note 1,  the historical  statements of  operations for the
Group have been adjusted to  remove the income and expenses  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 Operations 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 reflect the tax effect of the above adjustments.

    (e) Adjustment made to reverse the minority interest in the loss of MFS that
       would not have been  recorded if the Transactions  were completed at  the
       beginning of the periods.

    (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

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

2.  STATEMENTS OF OPERATIONS PRO FORMA ADJUSTMENTS (CONTINUED)
       Stock at the  prior year  end conversion  ratio. 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 of  MFS and give  effect to certain other
elements of the Transactions. The paid-in  capital and retained earnings of  MFS
have  been combined and reflected  as retained earnings on  the balance sheet of
MFS, for purposes of this pro forma presentation. 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.

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

    (e) Adjustment made to record the reversal of the minority interest in MFS.

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.

5.  OTHER MATTERS
    In 1974, a  subsidiary of the  Group ("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, titled WHITNEY BENEFITS, INC.  AND
PETER KIEWIT SONS' CO. V. THE UNITED STATES, 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
property ($60 million) plus interest. In 1991, the U.S. Court of Appeals for the
Federal Circuit affirmed the decision of  the Claims Court and 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.

                                      F-23
<PAGE>
                            KIEWIT DIVERSIFIED GROUP
         NOTES TO PRO FORMA CONDENSED FINANCIAL STATEMENTS (CONTINUED)

5.  OTHER MATTERS (CONTINUED)
    On May 5, 1995, the government and the plaintiffs entered into a  settlement
agreement.  In settlement of all claims, the government agreed to pay plaintiffs
$200 million and plaintiffs agreed to 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. Peter Kiewit
Sons' Co., a subsidiary of Kiewit Diversified Group Inc., received approximately
$135 million on June 2, 1995.

                                      F-24
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

    Section  145 of the Delaware General Corporation Law (the "DGCL") empowers a
Delaware corporation  to indemnify  any  person who  was or  is  a party  or  is
threatened  to be made a  party to any threatened,  pending or completed action,
suit or  proceeding, whether  civil, criminal,  administrative or  investigative
(other  than an action by or in the  right of such corporation) by reason of the
fact that such person is or was  a director, officer, employee or agent of  such
corporation,  or  is or  was serving  at the  request of  such corporation  as a
director, officer, employee  or agent  of another corporation  or enterprise.  A
corporation  may, in  advance of the  final disposition of  any civil, criminal,
administrative or investigative  action, suit  or proceeding,  pay the  expenses
(including attorneys' fees) incurred by any officer, director, employee or agent
in  defending such  action, provided that  the director or  officer undertake to
repay such amount if  it shall ultimately  be determined that he  or she is  not
entitled  to be indemnified by the corporation. A corporation may indemnify such
person against  expenses  (including  attorneys'  fees),  judgments,  fines  and
amounts  paid in settlement  actually and reasonably incurred  by such person in
connection with such action, suit or proceeding if he or she acted in good faith
and in a manner  he or she reasonably  believed to be in  or not opposed to  the
best  interests of the corporation, and, with  respect to any criminal action or
proceeding, had no reasonable cause to believe his or her conduct was unlawful.

    A Delaware corporation may indemnify officers and directors in an action  by
or  in the right of the corporation to procure a judgment in its favor under the
same conditions, except  that no indemnification  is permitted without  judicial
approval  if  the  officer  or  director is  adjudicated  to  be  liable  to the
corporation. Where  an  officer or  director  is  successful on  the  merits  or
otherwise  in the defense of any action  referred to above, the corporation must
indemnify him or her against the  expenses (including attorneys' fees) which  he
or   she  actually  and   reasonably  incurred  in   connection  therewith.  The
indemnification provided is not  deemed to be exclusive  of any other rights  to
which  an officer  or director may  be entitled under  any corporation's by-law,
agreement, vote or otherwise.

    Section 145 of  the DGCL  empowers a  Delaware corporation  to purchase  and
maintain insurance on behalf of its officers and directors against any liability
asserted against them incurred while acting in such capacities or arising out of
their status as such.

    In  accordance with Section 145  of the DGCL, Article  SIXTH of the Restated
Certificate of Incorporation of PKS (the  "PKS Certificate") and the By-laws  of
PKS  (the "PKS By-laws") provide that PKS  shall indemnify each person who is or
was a director,  officer or  employee of  PKS (including  the heirs,  executors,
administrators  or estate of such person) or is or was serving at the request of
PKS as  a director,  officer or  employee of  another corporation,  partnership,
joint  venture, trust or other enterprise, to the fullest extent permitted under
subsections 145(a),  (b) and  (c) of  the  DGCL or  any successor  statute.  The
indemnification provided by the PKS Certificate and the PKS By-laws shall not be
deemed   exclusive  of  any   other  rights  to  which   any  of  those  seeking
indemnification or advancement  of expenses  may be entitled  under any  by-law,
agreement, vote of shareholders or disinterested directors or otherwise, both as
to  action  in such  person's  official capacity  and  as to  action  in another
capacity while holding such office,  and shall continue as  to a person who  has
ceased  to be  a director,  officer, employee  or agent  and shall  inure to the
benefit of the  heirs, executors and  administrators of such  a person.  Article
SEVENTH  of the  PKS Certificate provides  that a  director of PKS  shall not be
personally liable to PKS or its stockholders for monetary damages for breach  of
fiduciary  duty as a  director, except for  liability (i) for  any breach of the
director's duty  of  loyalty  to PKS  or  its  stockholders, (ii)  for  acts  or
omissions not in good faith or which involve intentional misconduct or a knowing
violation  of  law,  (iii)  under Section  174  of  the DGCL,  or  (iv)  for any
transaction from which the director derived an improper personal benefit. If the
DGCL is  amended  further eliminating  or  limiting the  personal  liability  of
directors,  then  the liability  of a  director  of PKS  shall be  eliminated or
limited to the fullest extent permitted by the DGCL as so amended.

                                      II-1
<PAGE>
    In accordance  with Section  145 of  the DGCL,  Article 7  of MFS'  Restated
Certificate  of Incorporation (the "MFS  Restated Certificate") and MFS' By-Laws
(the "MFS By-Laws") provide that MFS shall indemnify each person who is or was a
director,  officer  or  employee  of   MFS  (including  the  heirs,   executors,
administrators  or estate of such person) or is or was serving at the request of
MFS as director, officer or employee of another corporation, partnership,  joint
venture,  trust  or  other enterprise,  to  the fullest  extent  permitted under
subsections 145(a),  (b), and  (c) of  the DGCL  or any  successor statute.  The
indemnification  provided by  the MFS Restated  Certificate and  the MFS By-Laws
shall not be deemed exclusive of any other rights to which any of those  seeking
indemnification  or advancement  of expenses may  be entitled  under any by-law,
agreement, vote of stockholders or disinterested directors or otherwise, both as
to action in his or her official  capacity and as to action in another  capacity
while  holding such office, and shall continue as  to a person who has ceased to
be a director, officer, employee or agent and shall inure to the benefit of  the
heirs,  executors  and  administrators  of such  a  person.  Expenses (including
attorneys' fees)  incurred in  defending a  civil, criminal,  administrative  or
investigative action, suit or proceeding upon receipt of an undertaking by or on
behalf  of the indemnified person to repay such amount if it shall ultimately be
determined that he or she is not entitled to be indemnified by MFS. Article 8 of
the MFS  Restated Certificate  provides that  a  director of  MFS shall  not  be
personally  liable to MFS or its stockholders for monetary damages for breach of
fiduciary duty as a  director, except for  liability (i) for  any breach of  the
director's  duty  of  loyalty to  MFS  or  its stockholders,  (ii)  for  acts or
omissions not in good faith or which involve intentional misconduct or a knowing
violation of  law,  (iii)  under Section  174  of  the DGCL,  or  (iv)  for  any
transaction from which the director derived an improper personal benefit. If the
DGCL  is amended to  authorize corporate action  further eliminating or limiting
the personal liability  of directors, then  the liability of  a director of  MFS
shall be eliminated or limited to the fullest extent permitted by the DGCL as so
amended.

    Section  8.7 of the MFS By-Laws provides  that MFS may purchase and maintain
insurance on behalf of its directors, officers, employees and agents against any
liabilities asserted against such persons arising out of such capacities.

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

    Exhibits

<TABLE>
<CAPTION>
 EXHIBIT NO.                                             DESCRIPTION
- -------------  ------------------------------------------------------------------------------------------------
<C>            <S>
         .2 2  Distribution Agreement by and among PKS, KDG, KCG and MFS**
        2.2    Securities Purchase Agreement between KDG and MFS**
        4.1    Form of Certificate of Designations of the Series B Convertible Preferred Stock of MFS*
        4.2    Form of Stock Certificate for the Series B Convertible Preferred Stock*
        5.1    Opinion of Sutherland, Asbill & Brennan relating to legality of the Class C Stock and the Class
                D Stock of PKS**
        5.2    Opinion of Willkie Farr & Gallagher relating to legality of the Common Stock of MFS and the
                Series B Convertible Preferred Stock of MFS*
        8      Revenue Ruling from the Internal Revenue Service**
       15      Letter of Coopers & Lybrand, L.L.P. relating to unaudited financial information**
       23.1    Consent of Coopers & Lybrand, L.L.P. relating to PKS financial statements
       23.2    Consent of Coopers & Lybrand, L.L.P. relating to MFS financial statements
       23.3    Consent of Peat Marwick LLP
       23.4    Consent of Leon Constantin & Co.
       23.5    Consent of Sutherland, Asbill & Brennan (included in its opinion filed as Exhibit 5.1)
</TABLE>

                                      II-2
<PAGE>
<TABLE>
<CAPTION>
 EXHIBIT NO.                                             DESCRIPTION
- -------------  ------------------------------------------------------------------------------------------------
       23.6    Consent of Willkie Farr & Gallagher (included in its opinion filed as Exhibit 5.2)
<C>            <S>
       23.7    Consent of CS First Boston Corporation**
       23.8    Consent of Lehman Brothers Inc.**
       24      Powers of Attorney (included on signature pages)*
       99.1    Form of Letter of Transmittal sent to holders of Class B Stock of PKS**
       99.2    Form of Letter of Transmittal sent to holders of Class C Stock of PKS**
       99.3    Form of Letter of Transmittal sent to holders of Convertible Debentures of PKS**
       99.4    Consent of Person Named as Director
       99.5    Opinion of CS First Boston Corporation**
       99.6    Opinion of Lehman Brothers Inc.**
<FN>
- ------------------------
 * Previously filed  with the Form  S-3 Registration Statement  filed by MFS  on
June 16, 1995.
** To be filed by Amendment.
</TABLE>

ITEM 22.  UNDERTAKINGS

    (1) Each of the undersigned registrants hereby undertakes that, for purposes
of  determining  any liability  under the  Securities Act,  each filing  of such
registrant's annual report  pursuant to section  13(a) or section  15(d) of  the
Exchange  Act (and, where applicable, each  filing of an employee benefit plan's
annual  report  pursuant  to  section  15(d)  of  the  Exchange  Act)  that   is
incorporated  by reference in the registration statement shall be deemed to be a
new registration statement relating to  the securities offered therein, and  the
offering  of such securities at that time shall be deemed to be the initial BONA
FIDE offering thereof.

    (2) Insofar as indemnification for liabilities arising under the  Securities
Act  may be permitted to directors, officers  and controlling persons of each of
the registrants pursuant to the foregoing provisions, or otherwise, each of  the
registrants  has  been  advised  that  in the  opinion  of  the  Commission such
indemnification is against public policy as expressed in the Securities Act  and
is,  therefore, unenforceable.  In the  event that  a claim  for indemnification
against such liabilities (other than the  payment by each of the registrants  of
expenses  incurred or paid by a director,  officer or controlling person of such
registrant in  the successful  defense of  any action,  suit or  proceeding)  is
asserted  by such director, officer or controlling person in connection with the
securities being registered, each registrant will, unless in the opinion of  its
counsel  the matter has been settled by controlling precedent, submit to a court
of appropriate jurisdiction the question  whether such indemnification by it  is
against public policy as expressed in the Securities Act and will be governed by
the final adjudication of such issue.

    (3)  Each of  the undersigned  registrants hereby  undertakes to  respond to
requests for  information  that is  incorporated  by reference  into  the  joint
prospectus  pursuant  to Item  4,  10(b), 11,  or 13  of  this form,  within one
business day of receipt of such request, and to send the incorporated  documents
by  first class  mail or other  equally prompt means.  This includes information
contained  in  documents  filed  subsequent   to  the  effective  date  of   the
registration statement through the date of responding to the request.

    (4) Each of the undersigned registrants hereby undertakes to supply by means
of  a post-effective amendment all information concerning a transaction, and the
company being  acquired  involved therein,  that  was  not the  subject  of  and
included in the registration statement when it became effective.

                                      II-3
<PAGE>
    (5) Each of the undersigned registrants hereby undertakes that:

        (a)  For purposes of determining any liability under the Securities Act,
    the information omitted from  the form of prospectus  filed as part of  this
    Registration Statement in reliance upon Rule 430A and contained in a form of
    prospectus  filed by MFS pursuant  to Rule 424(b)(1) or  (4) or 497(h) under
    the Securities Act shall be deemed to be part of the Registration  Statement
    as of the time it was declared effective.

        (b)  For the purpose  of determining any  liability under the Securities
    Act, each post-effective amendment that contains a form of prospectus  shall
    be  deemed to  be a  new Registration  Statement relating  to the securities
    offered therein, and this offering of such securities at that time shall  be
    deemed to be the initial bona fide offering thereof.

                                      II-4
<PAGE>
                                   SIGNATURES

    Pursuant  to the  requirements of  the Securities Act  of 1933,  each of the
Registrants has duly  caused this  Registration Statement  to be  signed on  its
behalf by the undersigned, thereunto duly authorized, in Omaha, Nebraska on July
11, 1995.

<TABLE>
<S>                                           <C>
          Peter Kiewit Sons', Inc.                  MFS Communications Company, Inc.
      By:           /s/ Walter Scott,               By:           /s/ James Q. Crowe
                    Jr.                         ---------------------------------------
  ---------------------------------------                    James Q. Crowe
             Walter Scott, Jr.                           Chairman of the Board
                 President
</TABLE>

                POWER OF ATTORNEY FOR PKS DIRECTORS AND OFFICERS

    Each  of the  undersigned hereby  severally constitutes  and appoints Walter
Scott, Jr.,  Robert E.  Julian and  Matthew J.  Johnson, and  each of  them,  as
attorneys-in-fact  for the  undersigned, in  any and  all capacities,  with full
power of substitution,  to sign  any amendments to  this Registration  Statement
(including  post-effective  amendments),  and  to file  the  same  with exhibits
thereto and other documents  in connection therewith, with  the authority to  do
and  perform each and every act and thing  requisite and necessary to be done in
and about the  premises, as fully  to all intents  and purposes as  he might  or
could  do  in  person,  hereby  ratifying  and  confirming  all  that  each said
attorney-in-fact, or any of them, may lawfully do or cause to be done by  virtue
hereof.

    Pursuant   to  the  requirements  of  the   Securities  Act  of  1933,  this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities and of the dates indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                         TITLE                         DATE
- ------------------------------------------------------  --------------------------------------  -----------------

<C>                                                     <S>                                     <C>
                /s/ WALTER SCOTT, JR.
     -------------------------------------------        Chairman of the Board and President       July   , 1995
                  Walter Scott, Jr.                      (Principal Executive Officer)

               /s/ WILLIAM L. GREWCOCK
     -------------------------------------------        Vice Chairman and Director                July   , 1995
                 William L. Grewcock

                                                        Executive Vice President -- Chief
                 /s/ ROBERT E. JULIAN                    Financial Officer
     -------------------------------------------         (Principal Financial Officer) and        July   , 1995
                   Robert E. Julian                      Director

                /s/ KENNETH E. STINSON
     -------------------------------------------        Executive Vice President and Director     July   , 1995
                  Kenneth E. Stinson
</TABLE>

                                      II-5
<PAGE>
<TABLE>
<CAPTION>
                      SIGNATURE                                         TITLE                         DATE
- ------------------------------------------------------  --------------------------------------  -----------------

<C>                                                     <S>                                     <C>
                /s/ ERIC J. MORTENSEN
     -------------------------------------------        Controller                                July   , 1995
                  Eric J. Mortensen                      (Principal Accounting Officer)

     -------------------------------------------        Director                                  July   , 1995
                    Richard Geary

                /s/ LEONARD W. KEARNEY
     -------------------------------------------        Director                                  July   , 1995
                  Leonard W. Kearney

                 /s/ RICHARD R. JAROS
     -------------------------------------------        Director                                  July   , 1995
                   Richard R. Jaros

               /s/ GEORGE B. TOLL, JR.
     -------------------------------------------        Director                                  July   , 1995
                 George B. Toll, Jr.

     -------------------------------------------        Director                                  July   , 1995
                   Richard W. Colf

                /s/ BRUCE E. GREWCOCK
     -------------------------------------------        Director                                  July   , 1995
                  Bruce E. Grewcock

                 /s/ TAIT P. JOHNSON
     -------------------------------------------        Director                                  July   , 1995
                   Tait P. Johnson

                  /s/ JAMES Q. CROWE
     -------------------------------------------        Director                                  July   , 1995
                    James Q. Crowe

     -------------------------------------------        Director                                  July   , 1995
                 Robert B. Daugherty

     -------------------------------------------        Director                                  July   , 1995
                  Charles M. Harper

     -------------------------------------------        Director                                  July   , 1995
                  Peter Kiewit, Jr.
</TABLE>

                                      II-6
<PAGE>
                POWER OF ATTORNEY FOR MFS DIRECTORS AND OFFICERS

    Each  of the undersigned hereby severally  constitutes and appoints James Q.
Crowe, Royce  J.  Holland  and  Terrence  J. Ferguson,  and  each  of  them,  as
attorneys-in-fact  for the  undersigned, in  any and  all capacities,  with full
power of substitution,  to sign  any amendments to  this Registration  Statement
(including  post-effective  amendments),  and  to file  the  same  with exhibits
thereto and other  documents in  connection therewith, with  the Securities  and
Exchange  Commission, granting  unto said  attorneys-in-fact, and  each of them,
full power  and  authority to  do  and perform  each  and every  act  and  thing
requisite  and necessary to be  done in and about the  premises, as fully to all
intents and purposes as  he might or  could do in  person, hereby ratifying  and
confirming  all that each said attorney-in-fact, or any of them, may lawfully do
or cause to be done by virtue hereof.

    Pursuant  to  the  requirements  of   the  Securities  Act  of  1933,   this
Registration  Statement  has  been  signed  by  the  following  persons  in  the
capacities on the dates indicated.

<TABLE>
<CAPTION>
                      SIGNATURE                                         TITLE                         DATE
- ------------------------------------------------------  --------------------------------------  -----------------

<C>                                                     <S>                                     <C>
                  /s/ JAMES Q. CROWE                    Chairman of the Board and Chief
     -------------------------------------------         Executive Office                         July   , 1995
                    James Q. Crowe                       (Principal Executive Officer)

                                                        Senior Vice President, Chief Financial
               /s/ R. DOUGLAS BRADBURY                   Officer
     -------------------------------------------         (Principal Financial Officer) and        July   , 1995
                 R. Douglas Bradbury                     Director

                 /s/ ROBERT J. LUDVIK
     -------------------------------------------        Vice President and Controller             July   , 1995
                   Robert J. Ludvik                      (Principal Accounting Officer)

     -------------------------------------------        Director                                  July   , 1995
                    Howard Gimbel

                 /s/ ROYCE J. HOLLAND
     -------------------------------------------        Director                                  July   , 1995
                   Royce J. Holland

                 /s/ RICHARD R. JAROS
     -------------------------------------------        Director                                  July   , 1995
                   Richard R. Jaros

                 /s/ ROBERT E. JULIAN
     -------------------------------------------        Director                                  July   , 1995
                   Robert E. Julian
</TABLE>

                                      II-7
<PAGE>
<TABLE>
<CAPTION>
                      SIGNATURE                                         TITLE                         DATE
- ------------------------------------------------------  --------------------------------------  -----------------

<C>                                                     <S>                                     <C>
     -------------------------------------------        Director                                  July   , 1995
                   David C. McCourt

     -------------------------------------------        Director                                  July   , 1995
                  Ronald W. Roskens

                /s/ WALTER SCOTT, JR.
     -------------------------------------------        Director                                  July   , 1995
                  Walter Scott, Jr.

                /s/ KENNETH E. STINSON
     -------------------------------------------        Director                                  July   , 1995
                  Kenneth E. Stinson

     -------------------------------------------        Director                                  July   , 1995
                  Michael B. Yanney
</TABLE>

                                      II-8

<PAGE>
                                                                    EXHIBIT 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS

    We  consent  to the  incorporation by  reference  in the  joint registration
statement of Peter Kiewit  Sons', Inc. and MFS  Communications Company, Inc.  on
Form  S-4 of our report dated March 20,  1995, of our audits of the consolidated
financial statements and  financial statement schedules  of Peter Kiewit  Sons',
Inc.  as of  December 31, 1994  and December 25,  1993, and for  the three years
ended December 31, 1994, which report is  included in the Annual Report on  Form
10-K  of Peter  Kiewit Sons', Inc.  We further  consent to the  inclusion in the
aforementioned registration statement of our reports dated June 9, 1995, of  our
audits  of the pro forma consolidated condensed statement of operations of Peter
Kiewit Sons', Inc., Kiewit  Construction and Mining Group,  a business group  of
Peter  Kiewit Sons',  Inc., and  Kiewit Diversified  Group, a  business group of
Peter Kiewit Sons', Inc. for the year  ended December 31, 1994. We also  consent
to the reference to our Firm under the caption "Experts."

                                          COOPERS & LYBRAND L.L.P.

Omaha, Nebraska
July 10, 1995

<PAGE>
                                                                    EXHIBIT 23.2

                       CONSENT OF INDEPENDENT ACCOUNTANTS

    We  consent  to the  incorporation by  reference  in the  joint registration
statement of Peter Kiewit  Sons', Inc. and MFS  Communications Company, Inc.  on
Form  S-4  of  our  report  dated  February  14,  1995,  of  our  audits  of the
consolidated financial  statements  of  MFS  Communications  Company,  Inc.  and
Subsidiaries  as of December 31, 1994 and 1993,  and for each of the three years
in the period ended December 31, 1994, which report is incorporated by reference
to the 1994 Annual Report on Form 10-K/A Amendment No. 2 on May 15, 1995 of  MFS
Communications  Company, Inc. We also consent to the reference to our Firm under
the caption "Experts."

                                          COOPERS AND LYBRAND L.L.P.
Omaha, Nebraska
July 10, 1995

<PAGE>
                                                                    EXHIBIT 23.3

                        CONSENT OF INDEPENDENT AUDITORS

    We  consent to the incorporation by  reference in the Registration Statement
on Form S-4 of Peter Kiewit Sons', Inc. and MFS Communications Company, Inc.  of
our  report dated February 19, 1994, relating to the consolidated balance sheets
of Centex Telemanagement, Inc. as of December 31, 1993 and 1992, and the related
consolidated statements of operations, changes in stockholders' equity and  cash
flows and related schedules for each of the years in the three-year period ended
December  31, 1993 which  report appears in  the May 18,  1994 Current Report on
Form 8-K of MFS Communications Company, Inc.

                                          KPMG Peat Marwick LLP
San Francisco, California
July 10, 1995

<PAGE>
                                                                    EXHIBIT 23.4

                       CONSENT OF INDEPENDENT ACCOUNTANTS

    We  consent to the incorporation by  reference to the Registration Statement
on Form S-4 of Peter Kiewit Sons', Inc. and MFS Communications Company, Inc.  of
our  report dated  January 28,  1994, relating  to the  balance sheets  of Cylix
Communications Corporation as  of December 31,  1993 and 1992,  and the  related
statements  of operations, stockholders'  equity and cash flows  for each of the
years in the two year  period ended December 31,  1993, which report appears  in
the  Form  8-K/A Amendment  No.  1 of  MFS  Communications Company,  Inc., dated
December 13,  1994. We  also consent  to the  reference to  our firm  under  the
caption "Experts".

                                          Leon Constantin & Co.
New York, New York
July 10, 1995

<PAGE>
                                                                    EXHIBIT 99.4

                  CONSENT OF PERSON ABOUT TO BECOME A DIRECTOR

    Pursuant  to Rule  438 under  the Securities  Act of  1933, as  amended, the
undersigned hereby consents to his being named in the prospectus forming a  part
of  this  Registration Statement  on  Form S-3  as a  person  about to  become a
director of MFS Communications Company, Inc.

                                          William L. Grewcock

Omaha, Nebraska
July 11, 1995


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