KIEWIT PETER SONS INC
S-4/A, 1995-08-07
METAL CANS
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<PAGE>
   
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON AUGUST 4, 1995
    
                                                       REGISTRATION NO. 33-60977
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------

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

   
                                AMENDMENT NO. 2
    
                                       TO
                                    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, 7374                  (I.R.S. Employer
             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 jurisdiction  (Primary Standard Industrial        (I.R.S. Employer
      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
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>
*    Previously paid.
(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. 3 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 AUGUST 4, 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
(such  shares  of Class  C Stock  will then  be exchangeable  for Class  D Stock
pursuant to the Exchange Offer)  and (iii) shares of Class  D Stock for any  and
all  of PKS's outstanding 1993 Series Class D Convertible Debentures due October
31, 2003, all on the terms and subject to the conditions set forth herein and in
the related  Letter  of Transmittal  (which  together constitute  the  "Exchange
Offer"). For a discussion of certain tax consequences of the Exchange Offer, see
"The  Exchange Offer -- Certain United  States Federal Income Tax Considerations
Relating to the  Exchange Offer." The  Class C Stock  and the Class  D Stock  so
offered  in the Exchange Offer are  sometimes referred to collectively herein as
the "Offered Stock," PKS's convertible debentures described above are  sometimes
referred  to collectively herein  as the "Exchangeable  Debentures," the Class B
Stock and Class  C Stock are  sometimes collectively referred  to herein as  the
"Exchangeable Stock," and the Exchangeable Debentures and the Exchangeable Stock
are  sometimes referred to collectively herein as the "Exchangeable Securities."
See "Certain Definitions" for definitions of certain other terms used herein.
    

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

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

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

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

               THE DATE OF THIS PROSPECTUS IS             , 1995.

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

    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 WHETHER  TO PARTICIPATE IN  THE EXCHANGE OFFER.
THE PKS BOARD OF  DIRECTORS RECOMMENDS THAT  HOLDERS OF EXCHANGEABLE  DEBENTURES
TENDER SUCH EXCHANGEABLE DEBENTURES IN THE EXCHANGE OFFER.
    

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

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

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

                                                             (END OF COVER PAGE)

                                       ii
<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 and Form 10-K/A Amendment No. 2 on August 4, 1995;
    

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

                                      iii
<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).

                                       iv
<PAGE>
                               TABLE OF CONTENTS

   
<TABLE>
<S>                                                                                     <C>
PROSPECTUS SUMMARY....................................................................          1
RISK FACTORS..........................................................................         15
  RISK FACTORS RELATING TO THE EXCHANGE OFFER, SPIN-OFF AND PKS SECURITIES............         15
  RISK FACTORS RELATING TO MFS........................................................         27
OVERVIEW..............................................................................         31
SELECTED HISTORICAL AND PRO FORMA FINANCIAL DATA......................................         43
THE EXCHANGE OFFER....................................................................         49
THE SPIN-OFF..........................................................................         55
CERTAIN TRANSACTIONS..................................................................         61
RECENT DEVELOPMENTS...................................................................         65
DESCRIPTION OF SECURITIES.............................................................         68
LEGAL MATTERS.........................................................................         78
EXPERTS...............................................................................         78
CERTAIN DEFINITIONS...................................................................         79
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  long distance  carriers, resellers,  service  aggregators,
shared  tenant service  providers, cellular  providers and  radio providers that
incorporate MFS's switched, special  access and private  line services into  the
services that those firms offer to their customers.
    

    TELECOMMUNICATIONS SERVICES

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

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

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

                                       1
<PAGE>
   
    - MFS International currently offers  communications services to  businesses
      between   and  within  London,  Paris  and  Frankfurt,  and  is  currently
      developing networks in Stockholm and Zurich. MFS International was created
      to take advantage of international opportunities and to better serve MFS's
      existing customer  base  of  multinational  companies.  MFS  International
      currently  plans to  develop additional  networks and  services in primary
      international business centers in Europe and  Asia, and is in the  process
      of evaluating potential opportunities in these business centers.
    

    NETWORK SYSTEMS INTEGRATION

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

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

   
            MFS RECAPITALIZATION AND OTHER PRELIMINARY TRANSACTIONS
    

   
    In  order to satisfy certain requirements  of applicable tax law relating to
the Spin-off that are addressed by the Ruling, PKS and Kiewit Diversified  Group
Inc.,  a wholly owned first-tier subsidiary 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 August     , 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."  Subsequent to  the consummation of  the MFS  Recapitalization, KDG will
distribute as a dividend to  PKS the 40,062,658 shares  of MFS Common Stock  and
15,000,000  shares of  MFS Preferred  Stock then  held by  it. Immediately after
receiving such dividend  and prior  to the  Spin-off, PKS  will purchase  28,986
additional  shares of MFS Common Stock from MFS for $1,000,000. See "Overview --
The Spin-off."
    

                               THE EXCHANGE OFFER

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

                                       2
<PAGE>

   
<TABLE>
<S>                                       <C>
                                          Class C and D  Debenture; (such shares of  Class C Stock will  then be exchangeable for  a
                                          total  of 10.31 shares of Class D Stock pursuant to the Exchange Offer) (iii) 22.98 shares
                                          of Class C Stock and 22.98 shares of Class D Stock for each $1,000 in principal amount  of
                                          each  outstanding 1991 Series Class C and D  Debenture; (such shares of Class C Stock will
                                          then be exchangeable for a total of 9.57 shares of Class D Stock pursuant to the  Exchange
                                          Offer)  and (iv) 19.97 shares of Class D Stock for each $1,000 in principal amount of each
                                          outstanding 1993 Series Class D Debenture, that  in each case is validly tendered and  not
                                          properly  withdrawn prior to  the Expiration Date.  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.
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
</TABLE>
    

                                       3
<PAGE>

   
<TABLE>
<S>                                       <C>
                                          by them. Messrs. Scott and  Julian expect to tender, in  the aggregate, 785,892 shares  of
                                          Class  C Stock pursuant to the Exchange  Offer. See "Certain Transactions -- Intentions of
                                          Certain Significant Stockholders Regarding Participation  in Exchange Offer." PKS  expects
                                          that  all Exchangeable Debentures, including  those held by the  directors of PKS and KCG,
                                          will be tendered pursuant to the Exchange Offer.
Withdrawal Rights.......................  Exchangeable Securities tendered pursuant  to the Exchange Offer  may be withdrawn at  any
                                          time  prior to the Expiration  Date without penalty on  the terms and conditions contained
                                          herein. 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
                                          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 [August], 1995. If such approval is not received,  the
                                          Exchange Offer will not be consummated.
                                          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
</TABLE>
    

                                       4
<PAGE>

<TABLE>
<S>                                       <C>
                                          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
                                          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."
</TABLE>

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

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

                                  THE SPIN-OFF

   
<TABLE>
<S>                                       <C>
Manner of Distribution..................  The Spin-off will be declared and be effected on the Spin-off Date to holders of record of
                                          Class  D Stock (including Class D Stock issued in  the Exchange Offer) on such date 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  any other security  or to take  any other action  in
                                          order  to receive the  Spin-off Stock pursuant  to the Spin-off.  There are no dissenter's
                                          rights of appraisal in connection with the Spin-Off.
</TABLE>
    

                                       5
<PAGE>

   
<TABLE>
<S>                                       <C>
Spin-off Stock..........................  The Spin-off Stock will consist of a total of 40,091,644 shares of MFS Common Stock, which
                                          will constitute the major portion of the Spin-off Stock in terms of value, and a total  of
                                          15,000,000  shares of MFS  Preferred Stock, which  will constitute a  minor portion of the
                                          Spin-off Stock in terms of value. The number of shares of Spin-off Stock to be distributed
                                          in respect of each outstanding share of Class D Stock cannot be precisely determined prior
                                          to the  Expiration Date  of  the Exchange  Offer. The  following  table sets  forth  PKS's
                                          estimates  of the  number of  shares of  MFS Common  Stock and  MFS Preferred  Stock to be
                                          distributed per share of Class D Stock  outstanding at the time of the Spin-Off,  assuming
                                          that  (i)  all of  the  Exchangeable Debentures  are exchanged  for  Offered Stock  in the
                                          Exchange Offer and (ii) the  stated number of shares  of Exchangeable Stock are  exchanged
                                          for Class D Stock in the Exchange Offer:
</TABLE>
    

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

                                                        (1)  The  3,000,000 share assumption reflects PKS's estimate of the number
                                                             of shares of Exchangeable Stock likely to be tendered in the Exchange
                                                             Offer, based upon the tender  indications that PKS has received  from
                                                             members of the PKS Board of Directors and members of the KCG Board of
                                                             Directors,  and PKS's  estimates of  the likely  number of additional
                                                             tenders. The  5,000,000  share  assumption is  set  forth  solely  to
                                                             illustrate the impact of the tender of substantially more shares than
                                                             anticipated  by PKS. PKS does not  believe that a tender of 5,000,000
                                                             shares is likely.
                                                        (2)  The estimate of  the number  of shares of  MFS Common  Stock and  MFS
                                                             Preferred Stock distributed per share of Class D Stock was determined
                                                             by  dividing  the  total  number  of  each  class  of  shares  to  be
                                                             distributed by the sum of (i) the  number of shares of Class D  Stock
                                                             currently  outstanding, (ii)  in each case,  the number  of shares of
                                                             Class D Stock that would be issued upon tender of the assumed  number
                                                             of  shares of Exchangeable  Stock, and (iii) the  number of shares of
                                                             Class D Stock that would be issued upon exchange of all  Exchangeable
                                                             Debentures.
</TABLE>
    

   
<TABLE>
<S>                                       <C>
                                          The  MFS Preferred Stock is subject, by  its terms, to stringent restrictions on transfer.
                                          In addition, KDG has agreed  to grant to the Secretary  and Assistant Secretary of MFS  an
                                          irrevocable  proxy to vote all of  the shares of MFS Preferred  Stock in proportion to the
                                          vote of the holders  of MFS Common  Stock on all  matters other than  the election of  MFS
                                          directors  and matters as to which  the holders of MFS Preferred  Stock vote as a separate
                                          class under Delaware corporation law. Holders of Class D Stock will receive MFS  Preferred
                                          Stock  in the Spin- off  subject to such irrevocable proxy.  In lieu of issuing fractional
                                          shares of  Spin-off  Stock, PKS  will  round fractional  shares  to whole  shares  without
                                          affecting  the total number  of shares of Spin-off  Stock. See "The  Spin-off -- Manner of
                                          Effecting the Distribution" and "-- Listing and Trading of Spin-off Stock."
</TABLE>
    

                                       6
<PAGE>

   
<TABLE>
<S>                                       <C>
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 Expiration 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 three to four
                                          weeks after the Spin-off Date. See "The Spin-off -- Manner of Effecting the Distribution."
                                          Holders of Class D Stock should not attempt to sell or transfer MFS Common Stock  received
                                          pursuant to the Spin-off until they have received the certificates evidencing such stock.
Trading of Spin-off Stock...............  MFS  Common  Stock is  currently traded  on the  Nasdaq National  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  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."
</TABLE>
    

                                       7
<PAGE>

   
<TABLE>
<S>                                       <C>
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," is based on
                                          the Class D Formula Value, which is determined at the beginning of each fiscal year of PKS
                                          and is reduced by the amount of any subsequently declared dividend. Accordingly, the Class
                                          D Per Share Price will  be significantly reduced as a  result of the Spin-off because  the
                                          value  currently attributable to MFS will no longer be included in the calculation of such
                                          price. The current Class D Per  Share Price is $60.25. The  Class D Per Share Price  after
                                          the Spin-off will depend upon a number of factors, including the number of shares of Class
                                          D Stock issued in the Exchange Offer and PKS's determination of the portion of the Class D
                                          Per Share Price attributable to MFS. The following table sets forth PKS's estimates of (i)
                                          the  pro forma Class D Per  Share Price after giving effect  to the Exchange Offer and the
                                          Spin-Off, (ii) the current market value of the  MFS Common Stock to be distributed in  the
                                          Spin-off  per share of Class D  Stock and (iii) the redemption  value of the MFS Preferred
                                          Stock to be distributed in the Spin-off per share of Class D Stock, assuming in each  case
                                          that  (x)  all of  the  Exchangeable Debentures  are exchanged  for  Offered Stock  in the
                                          Exchange Offer and (y) the stated number of shares of Exchangeable Stock are exchanged for
                                          Class D Stock in the Exchange Offer:
</TABLE>
    

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

                                                        (1)  The 3,000,000 share assumption reflects PKS's estimate of the  number
                                                             of shares of Exchangeable Stock likely to be tendered in the Exchange
                                                             Offer,  based upon the tender indications  that PKS has received from
                                                             members of the PKS Board of Directors and members of the KCG Board of
                                                             Directors, and PKS's  estimates of  the likely  number of  additional
                                                             tenders.  The  5,000,000  share  assumption is  set  forth  solely to
                                                             illustrate the impact of the tender of substantially more shares than
                                                             anticipated by PKS. PKS does not  believe that a tender of  5,000,000
                                                             shares is likely.
                                                        (2)  Earnings  of  the  Diversified  Group  for  1995,  including earnings
                                                             attributable to  the settlement  of certain  litigation described  at
                                                             "Recent  Developments -- Whitney Litigation,"  would not be reflected
                                                             in the Class D Per Share Price until 1996.

                                                        (3)  For purposes of this table, each share of MFS Common Stock is  valued
                                                             at  $   , 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 --  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

</TABLE>
                                       8

<PAGE>

<TABLE>
<S>                                       <C>
                                          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."
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, if 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.

                                       9
<PAGE>
               SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            PETER KIEWIT SONS', INC.

   
<TABLE>
<CAPTION>
                                                                                                  PRO FORMA (1)
                                                              HISTORICAL            -----------------------------------------
                                                    ------------------------------                           THREE MONTHS
                                                                     THREE MONTHS    FISCAL YEAR ENDED      ENDED MARCH 31,
                                                     FISCAL YEAR     ENDED MARCH     DECEMBER 31, 1994           1995
                                                        ENDED            31,        -------------------   -------------------
                                                    --------------  --------------  SCENARIO   SCENARIO   SCENARIO   SCENARIO
                                                     1993    1994    1994    1995    #1 (2)     #2 (2)     #1 (2)     #2 (2)
                                                    ------  ------  ------  ------  --------   --------   --------   --------
                                                                 (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                                 <C>     <C>     <C>     <C>     <C>        <C>        <C>        <C>
RESULTS OF OPERATION:
  Revenue (3).....................................  $2,191  $2,991  $  573  $  681   $2,704     $2,704     $  563     $  563
  Net earnings (loss) (4).........................     261     110      23     (26)     177        177         14         14
FINANCIAL POSITION:
  Total Assets (3)................................   3,634   4,504           4,449                          2,894      2,894
  Current portion of long-term debt (3)...........      15      33              33                             13         13
  Long-term debt, less current portion (3)........     462     908             929                            366        366
  Stockholders' equity (5)........................   1,671   1,736           1,720                          1,325      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. Scenario 1 reflects PKS's estimate of the number of  shares
     of  Exchangeable Stock likely  to be tendered in  the Exchange Offer, based
     upon the tender indications that PKS  has received from members of the  PKS
     Board  of Directors and  members of the  KCG Board of  Directors, and PKS's
     estimates of the  likely number of  additional tenders. Scenario  2 is  set
     forth  solely to illustrate the impact  of the tender of substantially more
     shares than  anticipated by  PKS. PKS  does not  believe that  a tender  of
     5,000,000 shares is likely.
(3)  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.

                                       10
<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. Scenario 1 reflects PKS's estimate of the number of shares
     of Exchangeable Stock likely  to be tendered in  the Exchange Offer,  based
     upon  the tender indications that PKS has  received from members of the PKS
     Board of Directors  and members of  the KCG Board  of Directors, and  PKS's
     estimates  of the  likely number of  additional tenders. Scenario  2 is set
     forth solely to illustrate the impact  of the tender of substantially  more
     shares  than anticipated  by PKS.  PKS does  not believe  that a  tender of
     5,000,000 shares is likely.
(3)  Fully diluted earnings per share have not been presented because it is  not
     materially different from primary earnings per share.

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

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

(6)  Ownership  of the Class B Stock and  Class C Stock is restricted to certain
     employees conditioned  upon the  execution of  repurchase agreements  which
     restrict  the  employees  from  transferring the  stock.  PKS  is generally
     committed to purchase all  Class B Stock  and Class C  Stock at the  amount
     computed,  when put to PKS by a stockholder, pursuant to the Certificate of
     Incorporation. The aggregate redemption value of the B&C Stock at March 31,
     1995 was $355 million.
</TABLE>
    

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

                                       11
<PAGE>
               SUMMARY HISTORICAL AND PRO FORMA FINANCIAL DATA OF
                            KIEWIT DIVERSIFIED GROUP

   
<TABLE>
<CAPTION>
                                                                                                  PRO FORMA (1)
                                                              HISTORICAL            -----------------------------------------
                                                    ------------------------------                        THREE MONTHS ENDED
                                                                                     FISCAL YEAR ENDED
                                                     FISCAL YEAR     THREE MONTHS    DECEMBER 31, 1994      MARCH 31, 1995
                                                        ENDED       ENDED MARCH 31  -------------------   -------------------
                                                    --------------  --------------  SCENARIO   SCENARIO   SCENARIO   SCENARIO
                                                     1993    1994    1994    1995    #1 (2)     #2 (2)     #1 (2)     #2 (2)
                                                    ------  ------  ------  ------  --------   --------   --------   --------
                                                                 (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                                                 <C>     <C>     <C>     <C>     <C>        <C>        <C>        <C>
RESULTS OF OPERATIONS:
  Revenue (3).....................................  $  408  $  821  $  162  $  257   $  534     $  534     $  139     $  139
  Net earnings (loss) (4).........................     181      33      25     (24)     102        103         17         17
Per Common Share
  Net earnings (loss) (5).........................    9.08    1.63    1.21   (1.14)    4.73       4.63       0.75       0.74
  Dividends.......................................    0.50    --      --      --      --         --         --         --
  Stock price (6).................................   59.40   60.25   59.40   60.25                          42.20      42.85
  Book value......................................   59.52   60.36   60.17   59.85                          43.18      42.83
FINANCIAL POSITION:
  Total assets (3)................................   2,759   3,549           3,575                          2,097      2,148
  Current portion of long-term debt (3)...........      11      30              31                             11         11
  Long-term debt, less current portion (3)........     452     899             922                            360        360
  Stockholders' equity (7)........................   1,191   1,231           1,272                            953      1,004
  Formula Value (6)...............................   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. Scenario 1 reflects PKS's estimate of the number of shares
     of Exchangeable Stock likely  to be tendered in  the Exchange Offer,  based
     upon  the tender indications that PKS has  received from members of the PKS
     Board of Directors  and members of  the KCG Board  of Directors, and  PKS's
     estimates  of the  likely number of  additional tenders. Scenario  2 is set
     forth solely to illustrate the impact  of the tender of substantially  more
     shares  than anticipated  by PKS.  PKS does  not believe  that a  tender of
     5,000,000 shares is likely.
(3)  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.

                                       12
<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)
  Net cash provided by (used in) operating activities.................       28,741       32,946      (10,422)      (21,255)
  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, $153,304,000 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
     operating results  or  cash  flows  as  determined  by  generally  accepted
     accounting principles. See Consolidated Statements of Cash Flows.
(5)  Information  presented as  of the end  of the period  indicated and derived
     from non-financial records prepared by MFS which are not audited.
(6)  All circuits have been expressed as voice grade equivalent circuits.
(7)  Route miles refers to the number of miles of the telecommunications path in
     which the fiber optic cables are installed.
(8)  Fiber miles  refers  to the  number  of route  miles  installed  (excluding
     pending  installations) along  a telecommunications path  multiplied by the
     number of fibers along that path.
</TABLE>
    

                                       13
<PAGE>
                                  RISK FACTORS

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

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

CERTAIN CONSEQUENCES OF DECISION NOT TO EXCHANGE

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

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

                                       14
<PAGE>
   
Debenture,   which  a  holder  would  not  otherwise  receive  until  the  tenth
anniversary of  the  date  of  the  issuance  of  such  Exchangeable  Debenture.
Accordingly,  tender of Exchangeable Debentures in  the Exchange Offer will most
likely result in receipt of the greatest value by the debentureholder.
    

   
CERTAIN INVESTMENT CHARACTERISTICS OF EXCHANGEABLE STOCK AND CLASS D STOCK
    

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

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

   
    SUMMARY OF TERMS OF PKS STOCK.__The following table sets forth a comparative
summary of the basic terms of  the Class B Stock and  Class C Stock, on the  one
hand,  and  the Class  D Stock,  on the  other. As  this summary  is necessarily
incomplete, reference is made to, and this summary is qualified in its  entirety
by,  the more detailed information included  under "Description of Securities --
PKS Stock."
    

   
<TABLE>
<CAPTION>
                                     CLASS B STOCK AND CLASS C STOCK                     CLASS D STOCK
                                -----------------------------------------  -----------------------------------------
<S>                             <C>                                        <C>
Businesses with which Class     Construction and mine management           Diversified businesses: data management,
is Associated                                                              telecommunications, energy production,
                                                                           coal mining.
Voting Rights                   Class B Stock: Nonvoting.                  One vote per share.
                                Class C Stock: One vote per share.
  -Board of Directors           2/3 of directors elected by Class C        1/3 of directors elected by Class D
                                Stock. 4/5 of Class C directors must be    Stock. No cumulative voting.
                                "inside" directors. Elected by cumulative
                                voting.
  - Supermajority               80% of Class C Stock plus majority of      Majority of voting stock (which includes
    Requirements                voting stock (Class C Stock and Class D    Class D Stock) must approve fundamental
                                Stock combined) required to approve        corporate changes and certain other
                                fundamental corporate changes.             actions. Separate class vote required in
                                66 2/3% of Class C Stock plus majority of  certain circumstances.
                                voting stock required to approve certain
                                other actions.
</TABLE>
    

                                       15
<PAGE>
   
<TABLE>
<CAPTION>
                                     CLASS B STOCK AND CLASS C STOCK                     CLASS D STOCK
                                -----------------------------------------  -----------------------------------------
  -Equalizing Stock Dividends   If fewer shares of Class C Stock are
                                outstanding as compared to Class D Stock,
                                PKS Board can declare stock dividends on
                                Class C Stock, thereby increasing number
                                of aggregate Class C Stock votes, without
                                corresponding stock dividends on Class D
                                Stock.
<S>                             <C>                                        <C>
Stock Price                     Class B&C Per Share Price is based on      Class D Per Share Price is based on Class
                                Class B&C Formula Value, which is PKS's    D Formula Value, which is the
                                consolidated stockholders' equity, less    stockholders' equity of Diversified
                                the value of construction equipment, and   Group, plus one-half of the
                                less the Class D Formula Value.            unconsolidated stockholders' equity of
                                                                           PKS itself and any non-operating
                                                                           subsidiaries.
Dividends                       Dividends payable out of amount legally    Dividends payable out of Available Class
                                available less Available Class D Dividend  D Dividend Amount, which is a function of
                                Amount. Current policy is to pay 15-20%    Class D Formula Value (but dividends
                                of earnings as cash dividends.             cannot in any event exceed amount legally
                                                                           available for dividends). Current policy
                                                                           is not to pay cash dividends.
Liquidation                     In the event of liquidation, the PKS Board will establish two accounts from the
                                assets remaining for distribution to the PKS common stockholders. The D Liquidation
                                Account will be in an amount equal to the value of the Diversified Group's assets,
                                plus an amount equal to one-half of the unconsolidated stockholders' equity of PKS
                                itself and any non-operating subsidiaries. The B&C Liquidation Account will be the
                                value of the remaining assets. First, to the extent funds are available after
                                payment of creditors, holders of Class B Stock and Class C Stock will receive an
                                amount equal to $1.00 per share, reducing the B&C Liquidation Account. Second, to
                                the extent of remaining available funds, holders of Class D Stock will receive an
                                amount equal to $2.00 per share, reducing the D Liquidation Account. Finally, any
                                assets remaining in the B&C Liquidation Account will be distributed to the holders
                                of Class B Stock and Class C Stock and any assets remaining in the D Liquidation
                                Account will be distributed to the holders of Class D Stock.
Mandatory Exchanges             PKS Board can require exchange of Class B  PKS Board can require exchange of Class D
                                Stock and Class C Stock for shares of a    Stock for shares of a wholly-owned
                                wholly-owned subsidiary that holds all     subsidiary that holds all the assets and
                                the assets and liabilities of the          liabilities of the Diversified Group.
                                Construction & Mining Group.               PKS Board can require an exchange of all
                                                                           Class D Stock for Class C Stock, unless
                                                                           Class D Stock is Publicly Traded. If
                                                                           holders of Class D Stock are not eligible
                                                                           to own Class C Stock, the Company must
                                                                           repurchase such Class D Stock for cash.
Ownership and Transfer          Ownership by employees only (with limited  No restrictions on ownership and
Restrictions                    exceptions). Stock must be resold to PKS   transfer.
                                upon death or termination of employment,
                                except that stock of employees retiring
                                at year end may be converted into Class D
                                Stock. Sales by or to PKS only. No more
                                than 10% of the Class C Stock may be
                                owned by any one holder and related
                                persons.
</TABLE>
    

                                       16
<PAGE>
   
<TABLE>
<CAPTION>
                                     CLASS B STOCK AND CLASS C STOCK                     CLASS D STOCK
                                -----------------------------------------  -----------------------------------------
Repurchase Obligations          PKS must repurchase stock upon demand at   PKS must repurchase upon demand at Class
                                Class B&C Per Share Price.                 D Per Share Price, unless and until Class
                                PKS Board can suspend obligation to        D Stock is Publicly Traded.
                                repurchase for period up to one year.      PKS Board can suspend obligation to
                                                                           repurchase for period of up to one year.
                                                                           After PKS has repurchased 10% of
                                                                           outstanding Class D Stock in any one
                                                                           year, PKS Board can limit cash repurchase
                                                                           obligations by offering payment in form
                                                                           of two-year promissory note, regardless
                                                                           of financial condition of PKS.
<S>                             <C>                                        <C>
Redemption                      Class B Stock: At PKS Board discretion,    No provisions.
                                redeemable at Class B&C Per Share Price.
                                Class C Stock: PKS Board can require
                                resale of "excessive amounts" of stock,
                                based on level of employee's
                                contribution, effort and responsibility.
Conversion Rights               Holders can convert Class B Stock and      Until Class D Stock is Publicly Traded,
                                Class C Stock to Class D Stock by notice   holder can convert Class D Stock into
                                given from October 15 to December 15 in    Class C Stock in connection with an
                                any year, effective the following January  offering of Class C Stock to such holder
                                1.                                         (conversion limited to value of new Class
                                Conversion right suspended during          C Stock offered).
                                pendency of suspension of repurchase       Conversion right suspended during
                                obligation as described above. Conversion  pendency of suspension of repurchase
                                right also subject to PKS's right to       obligation as described above.
                                purchase for cash the shares tendered for
                                conversion.
</TABLE>
    

   
    VOTING RIGHTS.   The provisions  regarding voting rights  summarized in  the
above  table give the Class C Stock a significant degree of influence over PKS'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 PKS's assets  and net worth than will
the Construction  & Mining  Group. The  PKS Board  has no  present intention  to
declare  a stock dividend on the  Class C Stock so as  to increase the number of
votes attributable to  the Class  C Stock,  notwithstanding that  the number  of
outstanding  shares of Class D Stock currently exceeds the number of outstanding
shares of Class  C Stock, and  that such disparity  would increase after  giving
effect  to the Exchange  Offer. See "Description  of Securities --  PKS Stock --
Voting" and "-- The PKS Board of Directors."
    

   
    DIVIDENDS.  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.  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 PKS'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.  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 PKS,
as summarized in the above table,
    

                                       17
<PAGE>
   
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."
    

   
    SUSPENSION OF REPURCHASE OBLIGATIONS.__If  PKS'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.
    

   
    LIQUIDATION  OR  REORGANIZATION.__Neither  of  the  liquidation  preferences
referred to in the above table is  secured by any sinking fund and neither  will
restrict  PKS'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 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  PKS'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  PKS 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 PKS's stock. A stockholder who
had tendered his or her shares for  repurchase by PKS prior to the  commencement
of  such proceedings (including  a stockholder who  tendered during a suspension
period described  under  "Suspension  of Repurchase  Obligations"  above)  might
conceivably  be treated as a creditor of PKS  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 PKS for the purposes of any distribution.
    

   
CERTAIN INVESTMENT CHARACTERISTICS OF THE EXCHANGEABLE DEBENTURES.
    
   
    The Exchangeable Debentures are unsecured, interest-bearing debt obligations
of  PKS, maturing ten years after their respective issue dates. During the month
of  October  in  the  fifth  year  after  their  respective  issue  dates,   the
Exchangeable  Debentures are  convertible into PKS  stock at  a fixed conversion
price equal to the related  per share formula price on  the date of issuance  of
the  Exchangeable Debenture.  Each Class C  and D Debenture  is convertible into
shares of  Class C  Stock and  Class  D Stock,  and each  Class D  Debenture  is
convertible into shares of Class D Stock.
    

   
    The  Exchangeable Debentures may  not be transferred except  by sale to PKS.
The holder may  require PKS  to repurchase  the Exchangeable  Debentures at  any
time,  and must sell the Exchangeable Debentures  to PKS on death, retirement or
termination  of  employment  by  PKS.  PKS  may  also  redeem  the  Exchangeable
Debentures  at  its option,  except during  the applicable  one-month conversion
period. All repurchases or redemptions of Exchangeable Debentures by PKS are  at
a  price equal to the principal amount thereof plus accrued and unpaid interest.
See "Description of Securities -- PKS Convertible Debentures."
    

                                       18
<PAGE>
   
CERTAIN INVESTMENT CHARACTERISTICS OF SPIN-OFF STOCK.
    
   
    Set forth below is a brief summary of the terms of the MFS Common Stock  and
the  MFS Preferred Stock. Certain risk  factors associated with the ownership of
MFS Common  Stock and  MFS Preferred  Stock are  discussed under  "Risk  Factors
Relating to MFS," below.
    

   
    MFS COMMON STOCK.
    
   
    Holders  of  MFS Common  Stock are  entitled to  one vote  per share  on all
matters submitted  to a  vote of  MFS 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. The  MFS
Common Stock is currently traded on the Nasdaq National Market. See "Description
of Securities -- MFS Common Stock."
    

   
    MFS PREFERRED STOCK.
    
   
    Holders  of MFS Preferred Stock are entitled  to five votes per share on all
matters presented  to the  MFS stockholders.  KDG  has agreed  to grant  to  the
Secretary and Assistant Secretary of MFS an irrevocable proxy to vote all of the
shares  of MFS Preferred Stock  in proportion to the vote  of the holders of MFS
Common Stock on all matters other than the election of MFS directors and matters
as to which holders of  the MFS Preferred Stock vote  as a separate class  under
Delaware  corporation law. The shares of  MFS Preferred Stock distributed in the
Spin-off will be subject to this  irrevocable proxy. The MFS Preferred Stock  is
convertible into MFS Common Stock at any time after the first anniversary of the
date  of its issuance at an effective conversion rate of 0.0231884 shares of MFS
Common Stock per share of MFS Preferred Stock and is redeemable at the option of
MFS at any  time after the  sixth anniversary  of its issuance  at a  redemption
price  of $1.00  per share.  Dividends on  the MFS  Preferred Stock  will accrue
annually and be payable in  cash, but only when, as  and if declared by the  MFS
Board  of Directors. The MFS Preferred  Stock contains extensive restrictions on
transfer. See "Description of Securities -- MFS Preferred Stock."
    

   
COMPANY POLICY ON FUTURE SALES OF CLASS C STOCK
    

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

                                       19
<PAGE>
NO INTENTION TO REPLACE EXCHANGED CLASS B STOCK OR CLASS C STOCK THROUGH FUTURE
OFFERINGS

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

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.

   
CERTAIN UNITED STATES FEDERAL INCOME TAX CONSEQUENCES RELATING TO THE EXCHANGE
OFFER
    
   
    If the exchange  of Offered  Stock for  Exchangeable Stock  in the  Exchange
Offer   constitutes,  for   United  States   federal  income   tax  purposes,  a
"recapitalization" within the  meaning of Section  368(a)(1)(E) of the  Internal
Revenue Code of 1986, as amended (the "Code"), then, among other things, no gain
or  loss will  be recognized  by a  holder of  Exchangeable Stock  who elects to
participate in  the  Exchange Offer  upon  the  exchange of  Offered  Stock  for
Exchangeable  Stock. PKS has  been advised by Sutherland,  Asbill & Brennan, its
regular outside tax counsel, that, although the issue is not free from doubt, in
the opinion of  such counsel,  the exchange  of Offered  Stock for  Exchangeable
Stock  in the Exchange Offer should constitute, for United States federal income
tax purposes, a recapitalization within  the meaning of section 368(a)(1)(E)  of
the  Code. Accordingly, there is an element of uncertainty regarding the federal
income tax consequences  of such exchange.  See "The Exchange  Offer --  Certain
United States Federal Income Tax Considerations Relating to the Exchange Offer."
    

   
TRANSFER FROM CONSTRUCTION & MINING GROUP
    
   
    Whenever  Class B Stock or Class C Stock is converted into Class D Stock, it
has  been  PKS's  practice  (although  the  terms  of  the  PKS  Certificate  of
Incorporation  do  not  require  that  it do  so)  to  transfer  funds  from the
Construction & Mining Group to the Diversified Group, in an amount equal to  the
aggregate  Class B&C Per Share Price  of the Class B Stock  and Class C Stock so
converted, in order that the conversion will not have the effect of diluting the
Class  D  Formula  Value.  PKS  will  take  the  same  action  with  respect  to
Exchangeable  Stock exchanged for Class D Stock in the Exchange Offer. Thus, the
more Exchangeable Stock that  is exchanged, the greater  the funds that will  be
transferred  from the Construction & Mining  Group to the Diversified Group. For
example, if 3,000,000 shares of Class B  Stock and Class C Stock were  exchanged
for Class D Stock pursuant to the Exchange Offer, PKS would transfer $75,300,000
from  the Construction  & Mining  Group to  the Diversified  Group; if 5,000,000
shares of Class  B Stock  and Class  C Stock were  exchanged for  Class D  Stock
pursuant  to  the  Exchange  Offer, PKS  would  transfer  $125,500,000  from the
Construction & Mining Group to the  Diversified Group. Such transfer may have  a
negative impact on the liquidity of the Construction & Mining Group. PKS expects
that  the Construction  & Mining Group  will have sufficient  funds, either from
cash on  hand or  cash flow  from operations,  to make  any such  transfer.  If,
however,  more shares of Class B Stock and Class C Stock were tendered for Class
D Stock than  currently anticipated, such  funds might not  to be sufficient  to
fund  all of such  transfers, and the  Diversified Group might  defer receipt of
such transfer on a  short-term, interest-bearing basis.  However, the PKS  Board
does not intend to cause the Diversified Group to provide any such deferral on a
long-term  basis. If the Construction & Mining  Group is unable to fund all such
transfers within a short period after the Spin-
    

                                       20
<PAGE>
   
off, PKS intends to cause the Construction  & Mining Group to borrow from  third
parties  the funds necessary  to make such  transfers. PKS does  not foresee any
circumstance under which those  transfers would not ultimately  be made. In  any
event,  PKS  has  reserved  the  right  to  impose  a  limit  on  the  amount of
Exchangeable Stock  that  may  be  exchanged in  the  Exchange  Offer,  and  the
liquidity  of the  Construction & Mining  Group is  one factor the  PKS Board of
Directors would consider in determining  whether such a limit were  appropriate.
See "The Exchange Offer -- Terms of the Exchange Offer."
    

BUSINESSES OF CONSTRUCTION & MINING GROUP

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

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

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

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

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

                                       21
<PAGE>
   
BUSINESSES 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  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. During 1994, for example, the
Diversified  Group received $71 million, or  substantially all, of its after-tax
net operating cash flow from its coal mining operations. Although that  business
currently  produces  substantial  cash  flow,  those  cash  flows  will  decline
substantially over the next few years. For example, after-tax net operating cash
flow from coal sales under long-term purchase contracts, which was approximately
$55 million in 1994, is expected to decline to approximately $39 million by 1998
and to approximately $10 million by  2002, and will decline further  thereafter.
These  decreases are primarily due to a  decrease in amounts of coal required to
be purchased under those contracts.  Both CECI and C-TEC reinvest  substantially
all of their operating cash flows, and neither CECI nor C-TEC is expected to pay
dividends  to KDG  in the foreseeable  future. As  a result, the  ability of the
Diversified Group to fund  future business opportunities  will depend, in  part,
upon  its ability to invest its currently  available cash and the remaining coal
mining cash  flows  in  businesses that  will  be  able to  generate  cash  from
operations.
    

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

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

                                       22
<PAGE>
    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   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

                                       23
<PAGE>
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.
    

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

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

   
EFFECT OF CLASS D STOCK BECOMING PUBLICLY TRADED
    

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

   
    The  PKS Board  of Directors  has considered  and will  in the  future again
consider the feasibility  and desirability  of listing the  Class D  Stock on  a
national   securities  exchange,  on  the  Nasdaq  National  Market  or  in  the
over-the-counter market or taking other action to facilitate the Public  Trading
of  the Class D Stock. If the Class  D Stock were to become Publicly Traded, the
current aggregation  of businesses  that constitute  the Diversified  Group  and
certain  characteristics of the capital structure of the Company might result in
a public market valuation of the Class D Stock that was lower than the intrinsic
value of  the  underlying Diversified  Group  businesses, even  if  such  market
valuation  were higher  than the Class  D Formula Value.  Specifically, the fact
that the capital  structure of the  Company uses different  classes of stock  to
reflect   the  performance   of  the  two   Groups  of  the   Company,  and  the
    

                                       24
<PAGE>
   
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.
    

   
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  a   possible
interest-bearing  deferral of receipt of funds  owed to the Diversified Group by
the Construction & Mining Group in connection with the Exchange Offer.
    

                                       25
<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.

                                       26
<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

                                       27
<PAGE>
   
Common  Stock are  expected to constitute  approximately 65%  of the outstanding
shares of MFS Common Stock, after giving effect to the MFS Recapitalization. The
persons who are members of  the boards of directors of  PKS and MFS (other  than
one  director of PKS who became a director in June 1995), and who are holders of
Class D Stock, have entered into agreements with MFS restricting their right  to
resell  any shares  of MFS  Common Stock  received by  them as  a result  of the
Spin-off (including MFS Common Stock  received upon conversion of MFS  Preferred
Stock  received by  them) until May  24, 1997, with  certain limited exceptions;
provided, however, that each such person may sell up to 50,000 of such shares on
or after May 24, 1996. Based upon the number of shares of PKS stock held by such
persons, an aggregate of approximately 9,200,000 shares of MFS Common Stock  or,
approximately  15% of the total number of shares of MFS Common Stock expected to
be outstanding at the time of the Spin-off, will be subject to such  agreements.
See   "Certain  Transactions  --  Agreements   Regarding  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

                                       28
<PAGE>
   
MFS Common  Stock will  vote together  as  a single  class except  as  otherwise
required  by law. Each  share of MFS Preferred  Stock has five  (5) votes on all
matters presented to the stockholders of MFS. KDG, however, has agreed to  grant
the Secretary and Assistant Secretary of MFS an irrevocable proxy to vote all of
the  shares of MFS Preferred  Stock in proportion to the  vote of the holders of
MFS Common  Stock  on all  matters  (including,  but not  limited  to,  business
combinations)  other than the election of MFS  directors and matters as to which
the holders  of MFS  Preferred Stock  vote as  a separate  class under  Delaware
corporation  law. The irrevocable proxy will be binding on all recipients of MFS
Preferred Stock in the Spin-off and, as a result, will limit the ability of  the
holders of shares of MFS Preferred Stock to influence MFS actions on all matters
other  than the  election of  directors. See  "Description of  Securities -- MFS
Preferred Stock."
    

POTENTIAL ANTITAKEOVER EFFECT OF CERTAIN CHARTER AND BY-LAW PROVISIONS

    MFS has 905,000  shares of authorized  and unissued preferred  stock and  in
excess  of 100,000,000 shares  of authorized and unissued  MFS Common Stock that
could be issued to a third party  selected by current management or used as  the
basis  for a shareholders' rights plan, which could have the effect of deterring
a potential acquirer. At a  meeting on April 26, 1995  (the "April 26 MFS  Board
Meeting"),  the MFS Board of  Directors approved, and resolved  to submit to the
stockholders of MFS for approval at the MFS 1995 annual meeting of stockholders,
an amendment to the MFS certificate of incorporation to increase the  authorized
number  of shares of  preferred stock of  MFS from 1,000,000  to 25,000,000. The
approval by  the stockholders  of MFS  at the  MFS 1995  annual meeting  of  the
increase  in the number of  authorized shares of preferred  stock 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 make  more difficult or discourage  the removal of MFS's
management, which some or a majority of  the MFS stockholders may believe to  be
beneficial,  and could  discourage or  make more  difficult or  expensive, among
other transactions,  a merger  involving MFS,  or a  tender offer,  open  market
purchase   program  or  other   purchases  of  the  capital   stock  of  MFS  in
    

                                       29
<PAGE>
   
circumstances that  would give  MFS stockholders  the opportunity  to realize  a
premium  on the sale of their MFS  capital stock over the then-prevailing market
prices, which some or a  majority of such holders may  deem to be in their  best
interests.
    

                                    OVERVIEW

THE EXCHANGE OFFER

    In the Exchange Offer, PKS is offering to exchange:

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

   
    (ii) 24.75  shares of Class  C Stock and  24.75 shares of  Class D Stock for
         each $1,000 principal amount of  the Company's outstanding 1990  Series
         Convertible  Debentures due  October 31, 2000  (such shares  of Class C
         Stock will then be exchangeable for a total of 10.31 shares of Class  D
         Stock pursuant to the Exchange Offer);
    

   
    (iii) 22.98  shares of Class C  Stock and 22.98 shares  of Class D Stock for
          each $1,000 principal amount of the Company's outstanding 1991  Series
          Convertible  Debentures due October  31, 2001 (such  shares of Class C
          Stock will then be exchangeable for a total of 9.57 shares of Class  D
          Stock pursuant to the Exchange Offer); and
    

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

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

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

THE SPIN-OFF

   
    The  Exchange Offer is  being made in  connection with a  proposal by PKS to
effect the Spin-off by making a dividend distribution to the holders of Class  D
Stock,  including Class D Stock issuable in  the Exchange Offer, of the Spin-off
Stock, consisting of all of the 40,091,644 shares of MFS Common Stock and all of
the 15,000,000 shares of MFS  Preferred Stock to be held  by PKS at the time  of
the  Spin-off.  The Spin-off  Stock will  include the  40,062,658 shares  of MFS
Common Stock and the 15,000,000 shares of MFS Preferred Stock held by KDG  after
giving  effect to the MFS Recapitalization, which stock will be distributed as a
dividend by KDG to PKS immediately before the Spin-off. The Spin-off Stock  will
also  include  28,986 shares  of MFS  Common  Stock that  PKS will  purchase for
$1,000,000 immediately  after  the dividend  by  KDG to  PKS  but prior  to  the
Spin-off.  The  per  share  purchase  price  of  approximately  $34.50  for such
transaction was based on the average trading  price of the MFS Common Stock  for
the  30-day period preceeding the  date such transaction was  agreed upon by the
parties. Such purchase will provide MFS additional cash for payment of the legal
and other  costs  MFS  has  incurred  or  will  incur  in  connection  with  the
transactions  described herein. In  addition, the purchase by  PKS of such stock
will cause the Spin-off to constitute a "reorganization" for federal income  tax
purposes  (and not  only a  tax-free spin-off). Treatment  of the  Spin-off as a
reorganization will also qualify the receipt of, and transactions involving, the
Spin-off Stock for  tax-free treatment in  certain non-federal jurisdictions  in
which  holders of PKS stock reside. 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
    

                                       30
<PAGE>
   
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 any other security  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  [August   ],
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."

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

   
<TABLE>
<CAPTION>
  ASSUMED NUMBER       ESTIMATED NUMBER OF        ESTIMATED NUMBER OF
   OF SHARES OF       SHARES OF MFS COMMON      SHARES OF MFS PREFERRED
   EXCHANGEABLE       STOCK DISTRIBUTED PER      STOCK DISTRIBUTED PER
STOCK EXCHANGED(1)  SHARE OF CLASS D STOCK(2)  SHARE OF CLASS D STOCK(2)
------------------  -------------------------  -------------------------
<S>                 <C>                        <C>
    3,000,000                    1.77                       0.66
    5,000,000                    1.71                       0.64
<FN>
------------------------
(1)  The 3,000,000 share  assumption reflects  PKS's estimate of  the number  of
     shares  of Exchangeable Stock likely to  be tendered in the Exchange Offer,
     based upon the tender indications that PKS has received from members of the
     PKS Board of Directors and members of the KCG Board of Directors, and PKS's
     estimates of the likely number  of additional tenders. The 5,000,000  share
     assumption  is set forth solely  to illustrate the impact  of the tender of
     substantially more shares  than anticipated  by PKS. PKS  does not  believe
     that a tender of 5,000,000 shares is likely.
(2)  The  estimate of the number of shares of MFS Common Stock and MFS Preferred
     Stock distributed per share of Class D Stock was determined by dividing the
     total number of each class  of shares to be distributed  by the sum of  (i)
     the  number of shares of Class D  Stock currently outstanding, (ii) in each
     case, the number  of shares  of Class  D Stock  that would  be issued  upon
     tender of the assumed number of shares of Exchangeable Stock, and (iii) the
     number of shares of Class D Stock that would be issued upon exchange of all
     Exchangeable Debentures.
</TABLE>
    

   
    The current Class D Per Share Price is $60.25. Because a significant portion
of  the current Class D Per Share Price  is attributable to MFS, the Class D Per
Share  Price  will  be  significantly  reduced  when  and  if  the  Spin-off  is
consummated.  The actual Class D Per Share  Price after the Spin-off will depend
upon a number of factors, including the number of shares of Class D Stock issued
in the Exchange  Offer and  the Company's determination  of the  portion of  the
Class  D Per  Share Price  attributable to MFS.  The following  table sets forth
PKS's estimates of (i) the pro forma Class D Per Share Price after giving effect
to the  Exchange  Offer and  the  Spin-off, (ii)  the  current market  value  of
    

                                       31
<PAGE>
   
the  MFS Common  Stock to be  distributed in the  Spin-off per share  of Class D
Stock, and  (iii)  the  redemption  value  of the  MFS  Preferred  Stock  to  be
distributed  in the Spin-off per  share of Class D  Stock, assuming in each case
that (x) all of the Exchangeable  Debentures are exchanged for Offered Stock  in
the Exchange Offer and (y) the stated number of shares of Exchangeable Stock are
exchanged for Class D Stock in the Exchange Offer.
    

   
<TABLE>
<CAPTION>
 ASSUMED NUMBER     ESTIMATED     ESTIMATED VALUE     ESTIMATED VALUE
  OF SHARES OF      PRO FORMA      OF MFS COMMON     OF MFS PREFERRED
  EXCHANGEABLE     CLASS D PER   STOCK DISTRIBUTED   STOCK DISTRIBUTED
     STOCK            SHARE        PER SHARE OF        PER SHARE OF
  EXCHANGED(1)      PRICE(2)     CLASS D STOCK(3)    CLASS D STOCK(3)
----------------  -------------  -----------------  -------------------
<S>               <C>            <C>                <C>
   3,000,000        $   41.00        $     [ ]           $    0.66
   5,000,000        $   41.75        $     [ ]           $    0.64
<FN>
------------------------
(1)  The  3,000,000 share  assumption reflects PKS's  estimate of  the number of
     shares of Exchangeable Stock likely to  be tendered in the Exchange  Offer,
     based upon the tender indications that PKS has received from members of the
     PKS Board of Directors and members of the KCG Board of Directors, and PKS's
     estimates  of the likely number of  additional tenders. The 5,000,000 share
     assumption is set forth  solely to illustrate the  impact of the tender  of
     substantially  more shares  than anticipated by  PKS. PKS  does not believe
     that a tender of 5,000,000 shares is likely.
(2)  Earnings of the Diversified Group for 1995, including earnings attributable
     to the settlement of certain  litigation described at "Recent  Developments
     --  Whitney Litigation," would  not be reflected  in the Class  D Per Share
     Price until 1996.

(3)  For purposes of this  table, each share  of MFS Common  Stock is valued  at
     $[        ], 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

   
    One  of the requirements of applicable tax law relating to the Spin-off that
are addressed by the Ruling is that, at  the time of the Spin-off, PKS must  own
stock  possessing at least 80% of the voting  power of the MFS capital stock. In
order to satisfy this requirement,  PKS and KDG have  agreed with MFS to  effect
the  MFS Recapitalization pursuant  to which KDG will  exchange 2,900,000 of the
42,962,658 shares  of MFS  Common Stock  currently held  by KDG  for  15,000,000
shares  of the  MFS Preferred  Stock, which  is a  new class  of MFS convertible
preferred stock, $.01 par  value. The MFS  Recapitalization will be  consummated
immediately  prior to the Spin-off. Each share  of MFS Preferred Stock will have
five votes in the election of MFS  directors and in all other matters  presented
to  stockholders, although  KDG will  grant to  the Secretary  and the Assistant
Secretary of MFS an irrevocable proxy to vote all of the shares of MFS Preferred
Stock in  proportion to  the vote  of the  holders of  MFS Common  Stock on  all
matters other than the election of MFS directors and matters as to which holders
of  the MFS Preferred Stock vote as  a separate class under Delaware corporation
law. PKS will distribute, and the holders of Class D Stock will receive, the MFS
Preferred Stock in the Spin-off subject  to the terms of the irrevocable  proxy.
The  MFS Preferred Stock  will vote together  with the MFS  Common Stock and the
DECS as a single class, except on certain matters as to which holders of the MFS
Preferred Stock are entitled to a class vote under Delaware corporation law. See
"Certain  Transactions  --  Certain  Agreements  Between  PKS  and  MFS  --  The
Securities  Purchase Agreement" and "Description  of Securities -- MFS Preferred
Stock."
    

                                       32
<PAGE>
   
    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 [AUGUST   ], 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.    Since  the  adoption  of the
Amendment in 1992, MFS  has undergone substantial growth.  As a result, MFS  has
developed  needs for substantial  additional amounts of  capital which PKS could
not provide. MFS's growth also has resulted  in an increase in the market  value
of  those businesses that  has not been  reflected fully in  the Class D Formula
Value or in the Class D  Per Share Price at which  holders of Class D Stock  can
sell  their  stock  back to  the  Company  pursuant to  the  PKS  Certificate of
Incorporation.  This   difference   has   been  exacerbated   because   of   the
development-stage  activities  of  MFS, which  have  generated  substantial book
losses since 1992. During 1994, PKS management examined a number of  alternative
transactions  that could  address one or  more of these  issues. 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,  the possible  spin-off of  KDG, the primary
Diversified Group holding company, and the possible listing of the Class D Stock
on a national securities exchange or Nasdaq. After reviewing these alternatives,
the PKS Board concluded that a spin-off  of PKS's entire equity interest in  MFS
would  both reduce  the difference  between the  Class D  Formula Value  and the
market value  of the  Diversified Group  businesses, and  provide MFS  with  the
greatest  flexibility to  raise capital. In  addition, the  PKS Board determined
that a  Spin-off  of  MFS, as  opposed  to  other alternatives,  would  be  less
disruptive to PKS's current capital structure. 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.
    

                                       33
<PAGE>
   
    As noted above,  the purpose of  the MFS Recapitalization  is to enable  the
Spin-off  to qualify for tax-free treatment. During  the second half of 1994 and
the first half of 1995, management of  MFS and management of PKS negotiated  and
agreed  in principle  on the terms  and conditions of  the MFS Recapitalization,
including the condition that the MFS Recapitalization be subject to the approval
of a majority  of the non-PKS  holders of  MFS Common Stock.  Such agreement  in
principle  contemplated that the MFS Recapitalization would entail the surrender
by KDG of approximately 3.0 million shares  of MFS Common Stock in exchange  for
approximately 15.0 million to 25.0 million shares of MFS Preferred Stock.
    

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

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

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

    MFS's  management has indicated to the MFS Board of Directors that it is not
desirable to use  cash for  all potential  acquisitions, because  many of  MFS's
expansion opportunities will require significant amounts of cash. Instead, MFS's
management desires to be able to effect the acquisition of companies (as well as
assets  and facilities) through the  use of shares of  MFS Common Stock whenever
that approach  is more  attractive.  As long  as MFS  is  a subsidiary  of  KDG,
however, management of

                                       34
<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.

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

                                       35
<PAGE>
    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.

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

   
    The   PKS  Board  of  Directors  considered  the  Exchange  Offer,  the  MFS
Recapitalization and the  Spin-off at  a special meeting  on June  9, 1995  (the
"Special  Meeting"). At the  Special Meeting, the  Special Committee reported to
the PKS Board that, based upon the documents and other information presented  to
the  PKS Board and the Special  Committee, including (i) information relating to
the respective businesses and prospects of  the Construction & Mining Group  and
the  Diversified Group, including historical financial information regarding the
Construction &  Mining Group  and  the Diversified  Group, pro  forma  financial
information  reflecting the impact of the Exchange Offer and the Spin-off on the
Construction & Mining Group and the Diversified Group, 1995 financial  forecasts
for  the Construction & Mining Group  and the Diversified Group, and information
with respect to the liabilities of and contingent exposures of the  Construction
&  Mining Group  and the Diversified  Group, (ii)  the transfer of  funds to the
Diversified Group with respect  to the conversions of  shares of Class C  Stock,
(iii)  the effect of conversions on the holders of Class C Stock and the holders
of Class D Stock, including  the stated policy of  PKS not to replace  converted
shares with new grants, (iv) a preliminary version of the opinion dated July 21,
1995  of CS First  Boston that, on the  basis of and subject  to the matters set
forth therein, the Transactions  were fair, from a  financial point of view,  to
the  stockholders of PKS, (v) the reasons  for prompt action with respect to the
proposed Spin-off (as described  at "PKS Board Approval,"  below), and (vi)  the
presentations  made  by the  management of  the  Company, the  Special Committee
concluded that as of  the date of  its report it believed  that in its  business
judgment:  (a) the terms and conditions of  the MFS Recapitalization are fair to
the holders of the  Class D Stock, and  (b) the extension by  PKS to holders  of
Class  B  Stock and  holders of  Class C  Stock  of the  Exchange Offer  for the
Exchangeable Stock, when made in conjunction  with the Spin-off, is in the  best
interest of the stockholders of the Company. (Mr. Daugherty, the owner of 86,000
shares  of MFS Common Stock abstained from voting on the MFS Recapitalization in
the Special Committee deliberations.)
    

   
    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
    

                                       36
<PAGE>
   
connection with its approval of the Spin-off, the PKS Board considered that  the
Spin-off  would be advantageous  to MFS, and indirectly  to the PKS stockholders
who would become stockholders of MFS as  a result of the Spin-off, by  enhancing
MFS's  ability  to meet  its capital  funding  requirements in  a cost-effective
manner and to  implement its business  strategy. The PKS  Board also  recognized
that  (as discussed above under  "Ruling Request; Preliminary Negotiations") the
market value of the MFS Common Stock after the Spin-off was, at the time of  the
meeting,  and  is expected  to be  at  the time  of the  Spin-off, significantly
greater than the value attributed to MFS in the determination of the Class D Per
Share Price in accordance with the PKS Certificate of Incorporation prior to the
Spin-off. The PKS  Board concluded, subject  to final PKS  Board action  shortly
prior to the date the proposed Spin-off would be effected, that the Spin-off was
in the best interest of the stockholders of PKS and should be authorized.
    

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

   
    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 (I.E.,  $60.25 to  $26.00 or  1:.431535)  as
adjusted  for the dividends paid on  the Class B Stock and  the Class C Stock in
January 1995 of $.45  per share and in  May 1995 of $.45  per share (yielding  a
ratio  of $60.25 to $25.10 or 1: .416598). 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.      In   connection   with   the  MFS
Recapitalization, the  Exchange  Offer  and  the Spin-off,  the  PKS  Board  has
received  fairness opinions from  both Lehman Brothers  Inc. ("Lehman Brothers")
and from CS First Boston. PKS management retained Lehman Brothers in February of
1995 to provide PKS management  with advice, assistance and analysis  concerning
the  MFS Recapitalization,  the Exchange Offer  and the  Spin-off. Following the
formation of  the Special  Committee in  April of  1995, the  Special  Committee
retained  CS  First Boston  to provide  the  Special Committee  with independent
financial  advice   and  analysis   regarding  the   matters  which   were   the
    

                                       37
<PAGE>
   
subject of the Special Committee's review. Prior to its consideration of the MFS
Recapitalization,  the Exchange Offer  and the Spin-off  at the Special Meeting,
the PKS Board asked  both firms to provide  it with fairness opinions  regarding
the transactions.
    

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

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

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

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

    In arriving at its opinion,  CS First Boston relied  upon the advice of  PKS
that  the Spin-off will be consummated only if  it can be effected on a tax-free
basis, that the Spin-off will qualify  as a tax-free spin-off under Section  355
of  the Internal Revenue Code  of 1986, as amended,  and that PKS has determined
that the MFS Recapitalization  is the most feasible  method of facilitating  the
Spin-off  on a  tax-free basis.  In addition,  CS First  Boston relied  upon the
advice of PKS that PKS and MFS will take all action necessary to ensure that the
MFS Common Stock and the  MFS Preferred Stock to be  received by the holders  of
Class  D Stock in  the Spin-off will  not be "restricted  securities" within the

                                       38
<PAGE>
meaning of Rule 144(a)(3) promulgated under  the Securities Act and will not  be
subject  to  restrictions  on  transfer under  the  Securities  Act  (other than
restrictions imposed as a result of the holder being an "affiliate" (within  the
meaning of rule 144(a)(1) under the Securities Act) of MFS.

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

   
    The  opinion  of  CS  First  Boston   does  not  address  or  constitute   a
recommendation  regarding (i) the business decisions of PKS or MFS to effect the
MFS Recapitalization or  the Spin-off or  to make the  Exchange Offer, (ii)  the
determination  by PKS  of the  exchange ratio  of Exchangeable  Stock to Offered
Stock or the  other terms and  conditions of  the Exchange Offer,  or (iii)  the
business  decisions of PKS to  effect, or the financial impact  on PKS or any of
its stockholders  of, certain  other  transactions in  connection with  the  MFS
Recapitalization, the Exchange Offer and the Spin-off. CS FIRST BOSTON'S OPINION
IS  DIRECTED ONLY TO  THE FAIRNESS TO  THE STOCKHOLDERS OF  PKS OF THE FINANCIAL
TERMS OF  THE TRANSACTIONS,  AND DOES  NOT CONSTITUTE  A RECOMMENDATION  TO  ANY
HOLDER  OF EXCHANGEABLE SECURITIES AS TO  WHETHER SUCH HOLDER SHOULD PARTICIPATE
IN THE EXCHANGE OFFER.
    

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

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

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

   
    In connection with the delivery of its opinion, CS First Boston presented to
the Special Committee  and the PKS  Board (a) a  comparison of the  Class D  Per
Share  Price with the sum  of (i) the estimated  post-Spin-off Class D Per Share
Price and (ii)  the implied market  value of the  MFS Common Stock  and the  MFS
Preferred Stock estimated to be received in the Spin-off for each share of Class
D  Stock (based on  the May 15, 1995  closing price of MFS  Common Stock); (b) a
comparison of the Class B&C  Per Share Price with the  sum of (i) the  estimated
post-Spin-off Class D Per Share Price
    

                                       39
<PAGE>
   
multiplied  by the  number of shares  of Class D  Stock to be  received for each
share of Class B Stock or Class C Stock exchanged in the Exchange Offer and (ii)
the implied market value  of the MFS  Common Stock and  the MFS Preferred  Stock
estimated  to be  received in the  Spin-off for each  share of Class  B Stock or
Class C Stock exchanged for  Class D Stock in the  Exchange Offer (based on  the
May  15, 1995  closing price of  MFS Common Stock);  and (c) an  analysis of the
projected dilution of the Class D Stock as a result of exchanges of Exchangeable
Securities in the Exchange  Offer. CS First Boston  performed such analyses  (x)
assuming  exchange ratios for exchanges  of Class B Stock  and Class C Stock for
Class D Stock in the Exchange Offer (I) equal to the exchange ratio used in  the
Exchange  Offer and (II) based on the ratio projected by PKS to be applicable to
January 1996 conversions of Class B Stock  and Class C Stock into Class D  Stock
pursuant  to PKS's  Certificate of Incorporation  and (y)  assuming scenarios in
which no shares of Class B Stock and Class C Stock are exchanged in the Exchange
Offer, in which  an aggregate  of 3,000,000 such  shares are  exchanged, and  in
which an aggregate of 6,000,000 such shares are exchanged.
    

   
    In  addition, CS First Boston presented to the Special Committee and the PKS
Board (a) its views regarding the potential for increases in the trading  volume
of  MFS  Common Stock  after consummation  of the  Spin-off as  a result  of the
increased public float and greater liquidity  of MFS Common Stock and  increased
access for MFS to the public and private capital markets; (b) an analysis of the
holding period required before the Class B&C Per Share Price would equal the sum
of  (i) the post-Spin-off  Class D Per  Share Price multiplied  by the number of
shares of the Class D Stock  to be received for each  share of Class B Stock  or
Class  C Stock exchanged in the Exchange Offer  and (ii) the market value of the
MFS Common Stock and the MFS Preferred Stock to be received in the Spin-off  for
each  share of Class B Stock or Class C Stock exchanged for Class D Stock in the
Exchange Offer (based upon various assumed annual growth rates for the Class B&C
Per Share Price and  the Class D Per  Share Price and MFS  Common Stock); (c)  a
calculation  of certain financial benefits to  the non-PKS holders of MFS Common
Stock in the MFS Recapitalization  (based on the May  15, 1995 closing price  of
MFS  Common  Stock  and  the face  value  of  the MFS  Preferred  Stock);  (d) a
calculation of potential federal income tax consequences to PKS if the  Spin-off
were  structured  as a  taxable transaction  for PKS  for United  States federal
income tax purposes (based on the estimated amount of the capital gains tax that
could potentially be payable by  PKS if its holdings  of securities of MFS  were
distributed  in a  taxable transaction);  and (e) an  analysis of  the pro forma
effects of the Transactions on the balance sheet of each KCG and KDG, based upon
information provided by management of PKS.
    

    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.

   
    In  addition, the  PKS Board has  received an opinion  from Lehman Brothers,
financial advisor to PKS, dated June 9, 1995 that, based upon and subject to the
assumptions  and   qualifications   set  forth   in   such  opinion,   the   MFS
Recapitalization,  the Exchange Offer  for Exchangeable Stock  and the Spin-off,
taken as a whole, are fair from a financial point of view to the stockholders of
PKS. Lehman
    

                                       40
<PAGE>
   
Brothers subsequently rendered an opinion dated  July 21, 1995 to the PKS  Board
that,  based upon and subject to the assumptions and qualifications set forth in
such opinion,  the MFS  Recapitalization, the  Exchange Offer  for  Exchangeable
Stock  and the Spin-off,  taken as a whole,  are fair from  a financial point of
view to the stockholders of PKS.
    

   
    THE FULL TEXT OF THE OPINION OF  LEHMAN BROTHERS DATED JULY 21, 1995,  WHICH
SETS  FORTH  ASSUMPTIONS  MADE,  MATTERS CONSIDERED  AND  LIMITS  ON  THE REVIEW
UNDERTAKEN BY LEHMAN BROTHERS, IS ATTACHED  AS ANNEX II TO THIS PROSPECTUS.  THE
JUNE 9, 1995 OPINION IS SUBSTANTIALLY IDENTICAL TO THE OPINION ATTACHED HERETO.
    

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

   
    In  arriving at  its opinion,  Lehman Brothers  reviewed and  analyzed (i) a
draft of this  Prospectus, (ii) such  publicly available information  concerning
MFS  which it believed to be relevant  to its inquiry, including MFS's Form 10-K
for the fiscal year  ended December 31,  1994 and MFS's  annual report for  such
fiscal  year,  (iii) financial  and operating  information  with respect  to the
business, operations and prospects of MFS  and PKS furnished to Lehman  Brothers
by  PKS,  (iv) a  comparison  of the  historical  financial results  and present
financial condition of MFS and PKS with those of other companies which it deemed
relevant, (v) a trading  history of the  MFS Common Stock from  May 1993 to  the
date  of such  opinion and a  comparison of  that trading history  with those of
other companies which  it deemed relevant,  (vi) a comparison  of the  financial
terms  of the MFS Preferred  Stock with the terms  of certain other transactions
and securities which it deemed relevant and (vii) KDG's tax bases of its  equity
interests  in MFS and,  based upon the advice  of PKS and  its tax advisors, the
likely tax impact of various disposition  strategies with respect to the  equity
interests  in MFS or  its underlying assets  and the proposed  tax and financial
reporting  treatment  of  the  Spin-off.   In  addition,  Lehman  Brothers   had
discussions  with  the  managements of  each  of  PKS and  MFS  concerning their
respective businesses, operations, assets, financial condition and prospects and
undertook  such  other  studies,  analyses  and  investigations  as  it   deemed
appropriate.  No limitations were imposed by  the PKS Board upon Lehman Brothers
with respect  to  the  investigations  made or  procedures  followed  by  it  in
rendering its opinion.
    
   
    In  arriving at  its opinion,  Lehman Brothers  assumed and  relied upon the
accuracy and completeness  of the  financial and  other information  used by  it
without  assuming  any  responsibility  for  independent  verification  of  such
information and has further relied upon the assurances of the managements of PKS
and MFS that they are  not aware of any facts  that would make such  information
inaccurate  or misleading.  With respect to  the financial forecasts  of PKS and
MFS, Lehman Brothers  has assumed  that they  have been  reasonably prepared  on
bases  reflecting the  best currently available  estimates and  judgments of the
managements of PKS and  MFS as to  the future financial  performance of PKS  and
MFS,  respectively. In  addition, Lehman  Brothers has  not made  an independent
evaluation or appraisal of the  assets or liabilities (contingent or  otherwise)
of  PKS or MFS,  nor was it  furnished with any  such evaluations or appraisals.
Lehman Brothers has assumed that the consummation of the Exchange Offer and  the
Spin-off  will  not  result in  any  default  or similar  event  under  any loan
agreement, instrument of indebtedness or other contract of PKS or MFS which will
not be waived and that no more than 6,000,000 shares of Exchangeable Stock  will
be  exchanged for shares of Class D Stock  in the Exchange Offer. The opinion of
Lehman Brothers is based upon financial, market, economic and other  conditions,
and  upon tax laws, accounting standards  and legal and regulatory requirements,
as they existed on, and  could be evaluated as of,  July 21, 1995 and, with  the
consent  of PKS,  Lehman Brothers  has not  considered possible  changes in such
applicable tax laws, accounting standards or regulatory and legal requirements.
    

                                       41
<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  following is  a summary of  certain factors reviewed  and considered by
Lehman Brothers  in  connection  with  its opinion  dated  July  21,  1995.  The
preparation of a fairness opinion involves various determinations as to the most
appropriate  and  relevant considerations  and  the application  of  the factors
reviewed and considered to the particular circumstances and, therefore, such  an
opinion  is  not readily  susceptible  to summary  description.  Furthermore, in
arriving at  its  fairness  opinion,  Lehman  Brothers  did  not  attribute  any
particular  weight to any  factor considered by it,  but rather made qualitative
judgments as  to the  significance and  relevance of  each factor.  Accordingly,
Lehman  Brothers  believes that  the factors  and considerations  supporting its
opinion must  be taken  as a  whole and  that considering  any portion  of  such
factors,   without  considering  all  factors,  could  create  a  misleading  or
incomplete view  of  the process  underlying  its  opinion. In  its  review  and
consideration,  Lehman  Brothers  made  numerous  assumptions  with  respect  to
industry  performance,  general  business  and  economic  conditions  and  other
matters, many of which are beyond the control of the Company.
    

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

   
    In  addition, Lehman  Brothers considered  (a) the  benefits to  the non-PKS
holders of MFS Common Stock in the MFS Recapitalization; (b) the federal  income
tax consequences to PKS if the Spin-off were structured as a taxable transaction
for  PKS for United States  federal income tax purposes  (based on the estimated
amount of the capital gains tax that could potentially be payable by PKS if  its
holdings  of securities of  MFS were distributed in  a taxable transaction); and
(c) the pro forma  effects of the MFS  Recapitalization, the Exchange Offer  for
Exchangeable  Stock and the Spin-off, taken as  a whole, on the balance sheet of
each of KCG and KDG, based upon information provided by management of PKS.
    

    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

                                       42
<PAGE>
Directors.  PKS has also agreed to  reimburse Lehman Brothers for its reasonable
expenses, including professional  and legal fees  and disbursements of  counsel,
and  to indemnify  Lehman Brothers and  certain related  persons against certain
liabilities in connection with or arising out of its engagement. In the ordinary
course of its business,  Lehman Brothers and its  affiliates may actively  trade
the  debt and equity securities of MFS for  its own account and for the accounts
of customers and, accordingly, may at any time hold a long or short position  in
such securities.

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

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

   
    PARTICIPATION IN THE  EXCHANGE OFFER.   With  certain exceptions,  including
Messrs.  Walter Scott, Jr., and  Robert Julian, the directors  of PKS and of KCG
have advised PKS in writing that they will not tender in the Exchange Offer  any
shares of Class C Stock held by them. Messrs. Scott and Julian expect to tender,
in  the aggregate,  785,892 shares  of Class  C Stock  pursuant to  the Exchange
Offer.  See  "Certain   Transactions  --  Intentions   of  Certain   Significant
Stockholders Regarding Participation in Exchange Offer."
    

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

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

ABANDONMENT OR MODIFICATION OF TRANSACTIONS
   
    PKS reserves the right 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, if 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."
    

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

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

    The selected historical financial data for  each of the years in the  period
1990 to 1994 have been derived from audited historical financial statements. The
selected historical financial data for the 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.
Scenario 1 reflects PKS's estimate of the number of shares of Exchangeable Stock
likely to be tendered in the  Exchange Offer, based upon the tender  indications
that  PKS has received from members of the PKS Board of Directors and members of
the KCG  Board  of  Directors, and  PKS's  estimates  of the  likely  number  of
additional  tenders. Scenario 2 is set forth  solely to illustrate the impact of
the tender of substantially  more shares than anticipated  by PKS. PKS does  not
believe that a tender of 5,000,000 shares is likely.
    

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

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

<TABLE>
<CAPTION>
                                                                                                      PRO FORMA (1)
                                                                                        -----------------------------------------
                                                      HISTORICAL
                                ------------------------------------------------------  YEAR ENDED DECEMBER      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 OPERATION:
  Revenue (3).................  $1,917  $2,086  $2,027  $2,191  $2,991  $  573  $  681   $2,704     $2,704     $  563     $  563
  Earnings (loss) from
   continuing operations
   before cumulative effect of
   change in accounting
   principle (4)..............     108      49     150     261     110      23     (26)     177        177         14         14
  Net earnings (loss) (4).....      80     441     181     261     110      23     (26)     177        177         14         14
FINANCIAL POSITION:
  Total Assets (3)............   2,966   2,632   2,549   3,634   4,504           4,449                          2,894      2,894
  Current portion of long-term
   debt (3)...................      31      15       3      15      33              33                             13         13
  Long-term debt, less current
   portion (3)................     269     110      30     462     908             929                            366        366
  Stockholders' equity (5)....   1,185   1,396   1,458   1,671   1,736           1,720                          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>

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

<TABLE>
<CAPTION>
                                                                                                      PRO FORMA (1)
                                                                                        -----------------------------------------
                                                      HISTORICAL                            FISCAL YEAR          THREE MONTHS
                                ------------------------------------------------------         ENDED                 ENDED
                                                                         THREE MONTHS      DECEMBER 31,            MARCH 31,
                                                                            ENDED              1994                  1995
                                          FISCAL YEAR ENDED               MARCH 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.....................  $1,671  $1,834  $1,675  $1,783  $2,175  $  411  $  426   $2,175     $2,175     $  426     $  426
  Earnings (loss) before
   cumulative effect of change
   in accounting principle....      57      23      69      80      77      (2)     (2)      75         74         (3)        (3)
  Net earnings (loss).........      57      23      82      80      77      (2)     (2)      75         74         (3)        (3)
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       6.84      (0.26)     (0.37)
  Net earnings (loss).........    2.47    1.12    4.48    4.63    4.92   (0.14)  (0.16)    5.88       6.84      (0.26)     (0.37)
  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                          25.45      25.45
  Book value..................   14.99   19.25   23.31   27.43   31.39   27.72   32.25                          33.97      35.86
Financial Position:
  Total assets................     762     849     862     889     967             896                            819        768
  Current portion of long-term
   debt.......................      15       7       2       4       3               2                              2          2
  Long-term debt, less current
   portion....................      14      13      12      10       9               7                              6          6
  Stockholders' equity (7)....     350     400     437     480     505             448                            372        321
  Formula value (6)...........     249     299     351     391     411
<FN>
------------------------------
(1)  The pro forma results of operations data are computed assuming that the MFS
     Recapitalization, the Exchange Offer and  the Spin-off were consummated  on
     December  26, 1993 and January  1, 1995 for the  fiscal year ended December
     31, 1994 and 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>

                                       46
<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>

                                       47
<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)
  Net cash provided by (used in) operating
   activities.....................................  $(27,695) $(21,965)      28,741       32,946      (10,442)      (21,255)
  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>
    

                                       48
<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
     operating results  or  cash  flows  as  determined  by  generally  accepted
     accounting principles. See Consolidated Statements of Cash Flows.
 (8) Information  presented as  of the end  of the period  indicated and derived
     from non-financial records prepared by MFS which are not audited.  Includes
     statistical  data for  the Chicago network  which MFS managed  prior to its
     acquisition by MFS as described in Note 1 above.

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

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

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

                                       49
<PAGE>
                               THE EXCHANGE OFFER

TERMS OF THE EXCHANGE OFFER

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

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

   
    (ii)  24.75 shares of  Class C Stock and 24.75  shares of Class D Stock  for
    each  $1,000 principal  amount of  each outstanding  1990 Series Convertible
    Debenture due October 31, 2000  (such shares of Class  C Stock will then  be
    exchangeable  for a total of  10.31 shares of Class  D Stock pursuant to the
    Exchange Offer),
    

   
    (iii)  22.98 shares of Class C Stock  and 22.98 shares of Class D Stock  for
    each  $1,000 principal  amount of  each outstanding  1991 Series Convertible
    Debenture due October 31, 2001  (such shares of Class  C Stock will then  be
    exchangeable  for a total  of 9.57 shares  of Class D  Stock pursuant to the
    Exchange Offer), and
    

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

that is  validly  tendered  and  not  properly withdrawn  on  or  prior  to  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 B Stock and Class
C Stock into Class D  Stock (I.E., $60.25 to  $26.00, or 1:431535) adjusted  for
the  dividends paid on Class B  Stock and Class C Stock  in January 1995 of $.45
per share and  in May  1995 of $.45  per share  (yielding a ratio  of $60.25  to
$25.10,  or 1:.416598). In lieu of issuing fractional shares, PKS will round the
number of shares of Class D Stock received by a tendering holder of Exchangeable
Stock to the nearest whole number of shares without any additional consideration
being payable by or to such holder.
    

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

    Although PKS does not anticipate that it will be necessary to impose a limit
on the amount of Exchangeable Stock that may be exchanged in the Exchange Offer,
PKS expressly  reserves  the right  to  do so  if  the PKS  Board  of  Directors
determines  that acceptance of  all tendered Exchangeable Stock  would not be in
the best interest of  PKS and its  stockholders. If the PKS  Board were to  take
such

                                       50
<PAGE>
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."

    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 884,400  shares of Class B Stock issued and
outstanding, held by four holders of record, 13,944,365 shares of Class C  Stock
issued  and outstanding,  held by  1,255 holders  of record,  $805,000 principal
amount of 1990 Series Convertible Debentures outstanding, held by 41 holders  of
record,  $1,740,000  principal  amount  of  1991  Series  Convertible Debentures
outstanding, held by 74 holders of record, and $455,000 principal amount of 1993
Series Convertible Debentures outstanding, held by  12 holders of record. As  of
such  date, directors of PKS held, in the aggregate, 4,332,452 shares of Class C
Stock, $160,000 principal amount of 1990 Series Convertible Debentures, $425,000
principal amount of  1991 Series Convertible  Debentures and $200,000  principal
amount  of 1993 Series Convertible Debentures.  Such directors have indicated to
PKS that they do not intend to  tender their Exchangeable Stock pursuant to  the
Exchange  Offer with the exception  of Walter Scott, Jr.,  Chairman of the Board
and President of PKS, and Robert  E. Julian, Executive Vice President and  Chief
Financial Officer of PKS, who expect to tender, in the aggregate, 785,892 shares
of Class C Stock pursuant to the Exchange Offer. Mr. Scott's intention to tender
Class  C  Stock in  the Exchange  Offer  reflects his  assessment (based  on his
assumptions as to the amount of Class C Stock to be offered for sale by PKS  and
the amount of such stock to be repurchased by PKS, converted to Class B Stock 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. The PKS  Certificate
of Incorporation provides that, if for any reason a holder owns more than 10% of
the issued and outstanding shares of Class C Stock, on a fully-diluted basis, on
January 1st of any year, such holder must sell back to PKS or convert to Class D
Stock (or, in the case of Mr. Scott, Class B Stock or Class D Stock) that amount
of  such Class C Stock  which is in excess of  such 10% limitation. Mr. Julian's
intention to tender Class  C Stock reflects the  fact that his  responsibilities
with PKS relate primarily to the Diversified Group. See "Certain Transactions --
Intentions  of  Certain  Significant  Stockholders  Regarding  Participation  in
Exchange Offer." The Company expects that all Exchangeable Debentures, including
those held by the directors  of PKS, will be  tendered pursuant to the  Exchange
Offer.  See "Risk Factors  -- Risk Factors  Relating to the  Exchange Offer, The
Spin-off  and  PKS  Securities  --  Certain  Consequences  of  Decision  Not  to
Exchange."
    

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

    Participation   in  the  Exchange   Offer  is  voluntary,   and  holders  of
Exchangeable Securities should carefully consider  whether or not to accept  the
Exchange Offer. See "Risk Factors." 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

                                       51
<PAGE>
tendered  must be received by  PKS prior to 5:00  p.m., Omaha, Nebraska time, on
the Expiration Date. Separate  Letters of Transmittal will  be required for  the
tender  of  (i)  the  Class B  Stock,  (ii)  the  Class C  Stock  and  (iii) the
Exchangeable Debentures.

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

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

    If Exchangeable Stock has been pledged to a lender, the registered holder of
such pledged Exchangeable  Stock must  make appropriate  arrangements with  such
lender   for  valid  tender   of  the  certificates   representing  the  pledged
Exchangeable Stock. If,  however, such  lender is  FirsTier Bank,  N.A. 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 Exchangeable  Debentures  have  been  pledged  to  FirsTier  Bank,  N.A.,
execution  and return  of the Letter  of Transmittal also  will constitute, upon
receipt by  PKS, authorization  to pay  to  FirstTier Bank,  N.A., any  and  all
interest  accrued on loans from FirsTier  Bank, N.A. secured by the Exchangeable
Debentures through the Exchange Date, from and to the extent of interest accrued
on the Exchangeable Debentures through the Exchange Date, and otherwise  payable
to  the  holders of  the  Exchangeable Debentures.  PKS  will pay  the remaining
portion of  interest  accrued on  the  Exchangeable Debentures  to  the  holders
thereof as soon as practicable after the Exchange Date.
    

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

                                       52
<PAGE>
    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 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

                                       53
<PAGE>
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
[August   ], 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.
    

    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

                                       54
<PAGE>
such action would be in the best interest of PKS and its stockholders, to modify
the Exchange Offer in any respect, by giving written notice of such extension or
modification to the holders of Exchangeable Securities.

   
    Without limiting the factors the PKS Board might take into account in taking
action with  respect  to  the  Exchange Offer,  the  PKS  Board  might  consider
abandonment  or  modification  of  the  terms  of  the  Exchange  Offer  if such
abandonment or modification  were determined  to be  appropriate in  light of  a
change in applicable law or other unforeseen legal or regulatory considerations.
The  PKS Board  might also  consider modification of  the terms  of the Exchange
Offer under  the circumstances  described under  "Risk Factors  -- Risk  Factors
Relating  to the  Exchange Offer,  the Spin-off  and PKS  Securities -- Possible
Limit on Amount of Exchangeable Stock to Be Accepted in Exchange Offer."
    

   
    If PKS modifies a material  term of the Exchange  Offer, it will extend  the
period  of time during which the Exchange Offer will remain open if necessary so
that the Expiration Date, as  extended, is at least  10 business days after  the
announcement  of such  modification and,  to the  extent required  by applicable
securities laws,  will  file  an appropriate  post-effective  amendment  to  the
Registration   Statement  of  which  this  Prospectus  forms  a  part  with  the
Commission. If PKS modifies the terms of the Exchange Offer, 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.

    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

                                       55
<PAGE>
        (5)  The  holding  period  of Offered  Stock  received  pursuant  to the
    Exchange Offer will  include the holding  period of Exchangeable  Debentures
    surrendered  therefor,  provided that  such debentures  are held  as capital
    assets on the date of the exchange.

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

        (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 amount  of
any  gain recognized upon  a taxable exchange of  Offered Stock for Exchangeable
Debentures or for Exchangeable Stock would  equal the excess of the fair  market
value  of the Offered Stock over the holder's adjusted basis in the Exchangeable
Debentures or the  Exchangeable Stock,  and the  amount of  any loss  recognized
would  equal  the excess  of  the holder's  adjusted  basis in  the Exchangeable
Debentures or the Exchangeable Stock over  the fair market value of the  Offered
Stock.  For purposes of determining the fair  market value of the Offered Stock,
each share of  Class C Stock  should be treated  as having a  fair market  value
equal  to the Class B&C Per Share Price,  and each share of Class D Stock should
be treated as having a fair market value  equal to the Class D Per Share  Price,
in each case at the time of consummation of the Exchange Offer.
    

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

                                       56
<PAGE>
                                  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 declared  and be effected  on the Spin-off  Date to holders of
record of Class D Stock (including Class  D Stock issued in the Exchange  Offer)
on such date. Such holders of Class D Stock will become holders of record of the
Spin-off  Stock to  which they  are entitled on  or promptly  after the Spin-off
Date. PKS currently anticipates that the Spin-off Date will be the day after the
Expiration Date. PKS expressly  reserves the right, in  its sole discretion,  to
defer  the  Spin-off Date  if  it determines  that such  action  is in  the best
interest of PKS and its stockholders, but if the Exchange Offer is  consummated,
the Spin-off will be consummated promptly thereafter.
    

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

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

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

   
    Certificates representing Spin-off Stock will be mailed to holders of  Class
D  Stock as soon  as practicable after  the Spin-off Date.  Because the Spin-off
will require issuance and mailing of a significant number of stock certificates,
a delay of  approximately three to  four weeks in  delivery of the  certificates
representing  Spin-off Stock  might occur. Holders  of Class D  Stock should not
attempt to sell or transfer MFS  Common Stock received pursuant to the  Spin-off
until they have received the certificates evidencing such stock.
    
   
    PKS  will  mail the  certificates representing  the  Spin-off Stock  to each
holder of Class D Stock of record  on the Spin-off Date unless PKS has  received
written  notification from such holder, at least five business days prior to the
date that the  certificates representing the  Spin-off Stock are  to be  mailed,
that  some  or all  of the  Spin-off Stock  received  in the  Spin-off is  to be
delivered to a lending institution  pursuant to a borrowing arrangement  between
the  holder and such lending institution. However, even if no notice is received
by PKS to  such effect, PKS  reserves the  right to deliver  the Spin-off  Stock
received  by a holder of Class D Stock  in the Spin-off to a lending institution
if PKS  believes in  good faith  that such  lending institution  is entitled  to
receive  such Spin-off Stock pursuant to a borrowing arrangement with the holder
of Class D Stock.
    

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

                                       57
<PAGE>
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."

    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.

                                       58
<PAGE>
CERTAIN EFFECTS OF SPIN-OFF ON CLASS D STOCK

   
    Because  approximately one-third of  the current Class D  Per Share Price of
$60.25 is attributable to MFS, the Class D Per Share Price will be significantly
reduced when the  Spin-off is  consummated. The  amount of  such reduction  will
depend  upon the  number of  Exchangeable Securities  exchanged in  the Exchange
Offer. For example,  assuming in  two alternative scenarios  that (i)  3,000,000
shares  and (ii) 5,000,000 shares of Exchangeable Stock, and in each case all of
the Exchangeable Debentures, are exchanged in the Exchange Offer, the  estimated
Class  D Per Share Price after giving effect to the Spin-off would be $41.00 and
$41.75, respectively. Accordingly, 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  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 SECURITIES TO  A LENDER AND  WHO ARE  CONSIDERING
PARTICIPATION  IN THE  EXCHANGE OFFER, OR  WHO HAVE  PLEDGED CLASS D  STOCK TO A
LENDER, SHOULD CONSULT WITH  THEIR LENDER AS  TO THE EFFECT  OF THE SPIN-OFF  ON
THEIR LOAN ARRANGEMENTS.
    

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, if the Exchange  Offer is consummated, the Spin-off  will
be consummated promptly thereafter.
    

    PKS  also reserves the right, at  any time or from time  to time, if the PKS
Board of Directors determines for  any reason that such  action would be in  the
best  interest  of  PKS and  its  stockholders and  whether  or not  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).

                                       59
<PAGE>
   
    Without limiting the factors the PKS Board might take into account in taking
action with respect to the Spin-off, the PKS Board might consider abandonment or
modification  of the terms  of the Spin-off if  such abandonment or modification
were determined to  be appropriate in  light of  a change in  applicable law  or
other unforeseen legal or regulatory considerations.
    

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

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

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

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

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

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

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

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

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

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

                                       60
<PAGE>
    Treasury  regulations governing section 355 of the Code require that all PKS
stockholders who  receive  Spin-off Stock  attach  statements to  their  federal
income  tax returns for the taxable year in which they receive such stock, which
statements show the applicability  of section 355 of  the Code to the  Spin-off.
PKS  will provide each PKS stockholder  with the information necessary to comply
with this requirement.

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

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

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

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

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

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

        (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

                                       61
<PAGE>
    uncertain;  in  general, holders  of MFS  Preferred  Stock either  should be
    treated as if they had received an annual dividend of MFS Common Stock equal
    in amount to the amount of the  accrued but unpaid cash dividend ("Case  I")
    or  should have no  United States federal income  tax consequences until the
    MFS Preferred Stock is converted or  redeemed or a subsequent cash  dividend
    is paid on the stock ("Case II"), although other treatments may be possible.

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

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

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

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

                              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.

                                       62
<PAGE>
   
    Furthermore, each of  Messrs. Roy Cline,  Allan Kirkwood, Ronald  Minarcini,
and  Thomas Stortz  (I.E., the  members of  the KCG  board of  directors who are
holders of Class C Stock and who are not also directors of PKS), other than  one
of such KCG directors who is anticipating retirement, has advised PKS in writing
that  he will not tender in the Exchange  Offer any shares of Class C Stock held
by him.
    

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

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

                                       63
<PAGE>
    Based  on the foregoing indications of intent regarding participation in the
Exchange Offer, the following table shows the expected holdings of Class C Stock
and Class D Stock after giving effect to the consummation of the Exchange  Offer
of  (i) each member of the  PKS Board of Directors, (ii)  the PKS Directors as a
group and (iii) each person who is a director of KCG but not of PKS, as a group.

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

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

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

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

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

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

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

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

    Pursuant  to an agreement  among Richard Geary,  William Grewcock and Walter
Scott, Jr., in the event the Spin-off  is consummated, Mr. Geary would have  the
option  to sell to  Messrs. Grewcock and Scott  all of the  shares of MFS Common
Stock and  MFS Preferred  Stock received  by Mr.  Geary in  connection with  the
Spin-off. Each of Messrs. Geary, Grewcock and Scott is a member of the PKS Board
of  Directors and a holder of  Class D Stock. Mr. Scott  is also a member of the
MFS Board of Directors, and Mr. Grewcock 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

                                       64
<PAGE>
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.

    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 under
Delaware corporation law.  Holders of Class  D Stock who  receive MFS  Preferred
Stock in the Spin-off
    

                                       65
<PAGE>
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).
See "Overview -- The Spin-off."
    

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

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

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

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

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

                              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

                                       66
<PAGE>
property ($60 million)  plus interest. In  1991, the U.S.  Supreme Court  denied
certiorari.  The government  filed two  post-trial motions  in the  Claims Court
during 1992. The government requested a new trial to redetermine the 1977  value
of  the property. The government also filed a motion to reopen and set aside the
1989 judgment  as  void  and  to  dismiss  plaintiffs'  complaint  for  lack  of
jurisdiction.  In  May 1994,  the  Claims Court  entered  an order  denying both
motions. In February  1994, the Claims  Court issued an  opinion which  provided
that  the $60 million judgment would bear interest compounded annually from 1977
until payment. The government appealed the February 1994 and May 1994 orders.  A
hearing on the appeals was held in February 1995.

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

DECS OFFERING

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

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

AUTHORIZATION OF PREFERRED STOCK OF MFS

   
    Under the terms of  the MFS certificate of  incorporation, the MFS Board  of
Directors  is authorized, subject to any  limitations prescribed by law, without
stockholder approval, to issue shares of preferred stock in one or more  series.
Each  such  series  of  preferred stock  shall  have  such  rights, preferences,
privileges  and  restrictions,   including  voting   rights,  dividend   rights,
conversion rights, redemption privileges and liquidation privileges, as shall be
determined  by the  MFS Board  of Directors. At  a meeting  of the  MFS Board of
Directors on April 26, 1995, the MFS  Board approved, and resolved to submit  to
the  MFS stockholders for  approval at the 1995  MFS annual stockholders meeting
which is presently  expected to  be held on  [August    ], 1995,  a proposal  to
increase  the number of  authorized shares of preferred  stock from 1,000,000 to
25,000,000.
    

                                       67
<PAGE>
   
    The purpose of  authorizing the MFS  Board of Directors  to issue  preferred
stock  and  to  determine its  rights  and  preferences is  to  eliminate delays
associated with  a  stockholder vote  on  specific issuances.  The  issuance  of
preferred  stock,  while  providing  flexibility  in  connection  with  possible
acquisitions  and  other  corporate  purposes,  could  make  more  difficult  or
discourage the removal of MFS's management or could have the effect of making it
more  difficult for a third  party to acquire, or  of discouraging a third party
from acquiring, a majority of  the outstanding voting stock  of MFS. 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 make more difficult or discourage  the
removal of MFS's management or could have the effect of making it more difficult
for a third party to acquire, or of discouraging a third party from acquiring, a
majority  of the outstanding  voting stock of  MFS for the  purpose of a hostile
takeover. The intent  of the  measures adopted by  the MFS  Board of  Directors,
however,  is not to prevent  an acquisition. If an offer  were to be made, these
measures are  designated  to require  potential  acquirers to  make  financially
attractive  non-coercive  offers that  treat all  stockholders fairly,  to guard
against share accumulations in which control of MFS could pass to one or a group
of stockholders without paying a control  premium to the others, and to  provide
the  MFS  Board  of Directors  with  sufficient  time to  consider  any  and all
alternatives for maximizing stockholder value.
    

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

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

                                       68
<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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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 C Stock may be owned by any one employee and  certain
transferees  at any  time. Walter  Scott, Jr., Chairman  of the  Board and Chief
Executive Officer of PKS, and his  authorized transferees may hold no more  than
15% of the combined Class B Stock and Class C Stock outstanding at any time.
    

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

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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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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

                                       76
<PAGE>
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.

                                       77
<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 under
Delaware corporation law. The shares of  MFS Preferred Stock distributed in  the
Spin-off will be subject to this irrevocable proxy. The MFS Preferred Stock will
be  convertible into  shares of  MFS Common  Stock at  any time  after the first
anniversary  of  the  date  of  issuance  at  a  conversion  price  of   $43.125
(representing  an effective  conversion rate of  0.0231884 shares  of MFS Common
Stock for each  share of MFS  Preferred Stock converted,  assuming that the  MFS
Preferred  Stock  has  a value  of  $1.00 per  share,  which is  based  upon the
redemption price of the  MFS Preferred Stock of  $1.00 per share). Dividends  on
the  MFS Preferred Stock will accrue at the rate of 7 3/4% per annum and will be
payable in cash. Dividends will be paid only when, as and if declared by the MFS
Board of Directors. As a result of certain restrictions on MFS's ability to  pay
cash  dividends  that are  contained in  MFS's existing  debt agreements,  it is
currently anticipated  that,  in the  near  future,  the dividends  on  the  MFS
Preferred  Stock  will  not  be  declared, but  will  continue  to  accrue. Upon
conversion, holders will  be entitled  to receive  an amount,  payable at  MFS's
election  in cash or shares of MFS Common Stock, equal to all accrued but unpaid
dividends in respect of the shares surrendered for conversion. If MFS elects  to
pay  all  unpaid dividends  in  respect of  the  shares of  MFS  Preferred Stock
tendered for conversion in shares of MFS  Common Stock, the number of shares  of
MFS  Common Stock  to be  issued in  respect of  these unpaid  dividends will be
determined by a formula where the total amount of unpaid dividends to be paid on
each share of MFS  Preferred Stock is  divided by the "Fair  Market Value" of  a
share of MFS Common Stock. "Fair Market Value" is
    

                                       78
<PAGE>
   
defined,  in general, as (i)  if the MFS Common Stock  is listed on any national
securities exchange or the Nasdaq National Market, the average of the last sales
price of the MFS Common Stock for each day in the 30 trading day period prior to
the date of conversion, (ii)  if the MFS Common Stock  is not so listed, on  the
basis  of the average of  the mean between the closing  bid and asked prices for
the MFS Common Stock for each day in the 30 trading day period prior to the date
of conversion and (iii) if  the MFS Common Stock is  not so listed and if  there
are  no such closing bid and asked prices, on the basis of the fair market value
per share as determined by the MFS Board. The shares of MFS Preferred Stock will
be redeemable at the option  of MFS at any time  after the sixth anniversary  of
the  date of issuance at a redemption price of $1.00 per share, plus accrued and
unpaid dividends. The redemption  price will be payable,  at MFS's election,  in
cash or shares of MFS Common Stock.
    

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

                                 LEGAL MATTERS

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

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

                                    EXPERTS

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

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

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

                                       79
<PAGE>
    The  balance sheets of  Cylix Communications Corporation  as of December 31,
1993 and 1992, and  the related statements  of operations, stockholder's  equity
and  cash flows for each of the years  in the two-year period ended December 31,
1993 incorporated in this Prospectus by reference to the Current Report on  Form
8-K  of MFS Communications Company, Inc., dated  November 2, 1994, as amended by
Form 8-K/A Amendment No. 1  on December 13, 1994,  have been so incorporated  in
reliance  on the report of Leon Constantin & Co., independent accountants, given
on the authority of that firm as experts in accounting and auditing.

                              CERTAIN DEFINITIONS

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

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

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

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

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

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

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

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

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

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

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

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

                                       80
<PAGE>
    EXCHANGE OFFER  -- the  offer  by PKS  to exchange  (i)  Class D  Stock  for
outstanding  Class B  Stock and Class  C Stock, (ii)  Class C Stock  and Class D
Stock for outstanding  Class C and  D Debentures,  and (iii) Class  D Stock  for
outstanding  Class D Debentures, all upon  the terms and conditions contained in
this Prospectus and the Letter of Transmittal.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

                                       81
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS

<TABLE>
<S>                                                                                                                           <C>
Report of Independent Accountants for Peter Kiewit Sons', Inc. and Subsidiaries.............................................   F-3
Peter Kiewit Sons', Inc. and Subsidiaries Pro Forma Consolidated Condensed 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. Scenario 1
reflects PKS's estimate of the number of shares of Exchangeable Stock likely  to
be  tendered in the Exchange  Offer, based upon the  tender indications that PKS
has received from members of the PKS  Board of Directors and members of the  KCG
Board  of  Directors, and  PKS's estimates  of the  likely number  of additional
tenders. Scenario 2 is set forth solely  to illustrate the impact of the  tender
of  substantially more shares than anticipated by PKS. PKS does not believe that
a tender of 5,000,000 shares is likely.
    

    The pro forma condensed statements of 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 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>
                                                                                                    (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 (Expense):
  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                       $        75      $        (2)                      $        (3)
                               -----------                       --------------   -----------                       --------------
                               -----------                       --------------   -----------                       --------------
  Class D Stock..............  $        33                       $       102      $       (24)                      $        17
                               -----------                       --------------   -----------                       --------------
                               -----------                       --------------   -----------                       --------------
Earnings (Loss) Per Common
 and Common Equivalent Share:
  Class B & C................  $      4.92                       $      5.88      $      (.16)                      $      (.26)
                               -----------                       --------------   -----------                       --------------
                               -----------                       --------------   -----------                       --------------
  Class D....................  $      1.63                       $      4.73      $     (1.14)                      $       .75
                               -----------                       --------------   -----------                       --------------
                               -----------                       --------------   -----------                       --------------
Weighted Average Shares
 Outstanding:
  Class B & C................   15,697,724                        12,757,653(e)    13,909,422                        10,969,351(e)
                               -----------                       --------------   -----------                       --------------
                               -----------                       --------------   -----------                       --------------
  Class D....................   20,438,806                        21,636,604(e)    21,265,769                        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 shares outstanding: historical -- 884,400, pro forma
     -- 0.........................................................      --          --          --           --
    Class C shares outstanding: historical -- 13,006,455, pro
     forma -- 10,950,784..........................................           1      --          --                1
    Class D shares outstanding: historical -- 21,251,591, pro
     forma -- 22,592,800..........................................           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 shares outstanding: historical -- 884,400, pro forma --
     0................................................................     --          --      --            --
    Class C shares outstanding: historical -- 13,006,455, pro forma --
     8,950,784........................................................         1       --      --                1
    Class D shares outstanding: historical -- 21,251,597, pro forma --
     23,440,933.......................................................         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 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>
                                              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>
                                                                                                     (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        (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 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>
                                         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)       PRO FORMA
                               -----------  -----  -----------   --------------   -----------  -----  -----------   --------------
                                                                                                    (UNAUDITED)
                                                         (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                            <C>          <C>    <C>           <C>              <C>          <C>    <C>           <C>
Revenues.....................  $       821  $ 287    $--         $       534      $       257  $ 118    $--         $       139
Cost of Revenue..............         (660)  (342)   --                 (318)            (229)  (149)   --                  (80)
                               -----------  -----     ---        --------------   -----------  -----     ---        --------------
                                       161    (55)   --                  216               28    (31)   --                   59
General and Administration
 Expenses....................         (219)   (81)   --                 (138)             (57)   (26)   --                  (31)
                               -----------  -----     ---        --------------   -----------  -----     ---        --------------
Operating Earnings (Loss)....          (58)  (136)   --                   78              (29)   (57)   --                   28
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)              13
  Interest Expense, net......          (77)   (41)     --(c)             (36)             (26)    (9)     --(c)             (17)
  Other, net.................           (2)  --      --                   (2)               4     (1)   --                    5
                               -----------  -----     ---        --------------   -----------  -----     ---        --------------
                                        29    (17)    (51)                (5)              (4)    (7)     (2)                 1
                               -----------  -----     ---        --------------   -----------  -----     ---        --------------
Earnings (Loss) before Income
Taxes and Minority Interest
 in Net Losses (Gains) of
 Subsidiaries................          (29)  (153)    (51)                73              (33)   (64)     (2)                29
Benefit (Provision) for
 Income Taxes................           12      2      18(d)              28              (10)  --         1(d)              (9)
Minority Interest in Net
 Losses (Gains) of
 Subsidiaries................           50   --       (49)(e)              1               19   --       (22)(e)             (3)
                               -----------  -----     ---        --------------   -----------  -----     ---        --------------
Net Earnings (Loss)..........  $        33  $(151)   $(82)       $       102      $       (24) $ (64)   $(23)       $        17
                               -----------  -----     ---        --------------   -----------  -----     ---        --------------
                               -----------  -----     ---        --------------   -----------  -----     ---        --------------
Net Earnings (Loss) Per
 Common and Common Equivalent
 Share.......................        $1.63                             $4.73           $(1.14)                            $0.75
Weighted Average Shares
 Outstanding.................   20,438,805                        21,636,604(f)    21,265,769                        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>
                                                                                                     (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)       PRO FORMA
                                 ----------   -----  -----------   -------------   ----------   -----  -----------   -------------
                                                          (DOLLARS IN MILLIONS, EXCEPT PER SHARE AMOUNTS)
<S>                              <C>          <C>    <C>           <C>             <C>          <C>    <C>           <C>
Revenue........................    $ 821      $ 287    $--             $ 534         $  257     $ 118    $--             $ 139
Cost of Revenue................     (660)      (342)   --               (318)          (229)     (149)    --               (80)
                                 ----------   -----     ---           ------       ----------   -----  -----------       -----
                                     161        (55)   --                216             28       (31)    --                59
General and Administrative
 Expenses......................     (219)       (81)   --               (138)           (57)      (26)    --               (31)
                                 ----------   -----     ---           ------       ----------   -----  -----------       -----
    Operating Earnings
     (Loss)....................      (58)      (136)   --                 78            (29)      (57)    --                28
Other Income (Expense):
  Gain on Subsidiary's Stock
   Transactions, net...........       54       --       (54)(a)       --                  3      --           (3)(a)    --
  Investment Income, net.......       54         24       5(b)            35             15         3          1(b)         13
  Interest Expense, net........      (77)       (41)     --(c)           (36)           (26)       (9)        --(c)        (17)
  Other, net...................       (2)      --      --                 (2)             4        (1)    --                 5
                                 ----------   -----     ---           ------       ----------   -----  -----------       -----
                                      29        (17)    (49)              (3)            (4)       (7)        (2)            1
                                 ----------   -----     ---           ------       ----------   -----  -----------       -----

Earnings (Loss) before Income
 Taxes and Minority Interest in
 Net Losses (Gains) of
 Subsidiaries..................      (29)      (153)    (49)              75            (33)      (64)        (2)           29
Benefit (Provision) for Income
 Taxes.........................       12          2      17(d)            27            (10)     --            1(d)         (9)
Minority Interest in Net Losses
 (Gains) of Subsidiaries.......       50       --       (49)(e)            1             19      --          (22)(e)        (3)
                                 ----------   -----     ---           ------       ----------   -----  -----------       -----
    Net Earnings (Loss)........    $  33      $(151)   $(81)           $ 103         $  (24)    $ (64)   $   (23)        $  17
                                 ----------   -----     ---           ------       ----------   -----  -----------       -----
                                 ----------   -----     ---           ------       ----------   -----  -----------       -----
Net Earnings (Loss) Per Common
 and Common Equivalent Share...    $1.63                               $4.63         $(1.14)                             $0.74
                                 ----------                           ------       ----------                            -----
                                 ----------                           ------       ----------                            -----
Weighted Average Shares
 Outstanding...................  20,438,806                        22,389,129(f)   21,265,769                        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>
        2.1    Form of Securities Purchase Agreement between KDG and MFS*
        2.2    Form of Distribution Agreement by and among PKS, KDG, KCG 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      Ruling Letter 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
-------------  ------------------------------------------------------------------------------------------------
<C>            <S>
       23.6    Consent of Willkie Farr & Gallagher (included in its opinion filed as Exhibit 5.2)*
       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*
       99.7    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.*
       99.3    Option Agreement
<FN>
------------------------
  * Previously filed.
 ** Filed under an Application for Confidential Treatment pursuant to Rule 406.
</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 Amendment No.  2 to be signed on its behalf  by
the  undersigned, thereunto  duly authorized,  in Omaha,  Nebraska on  August 4,
1995.
    

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

                           PKS DIRECTORS AND OFFICERS

   
    Pursuant to the requirements of the  Securities Act of 1933, this  Amendment
No.  2 has  been signed by  the following persons  in the capacities  and on the
dates indicated.
    

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

<C>                                                     <S>                                   <C>
                      /s/ WALTER SCOTT, JR.
     -------------------------------------------        Chairman of the Board and President     August 4, 1995
                  Walter Scott, Jr.                      (Principal Executive Officer)

                              *
     -------------------------------------------        Vice Chairman and Director              August 4, 1995
                 William L. Grewcock

                                                        Executive Vice President -- Chief
                              *                          Financial Officer
     -------------------------------------------         (Principal Financial Officer) and      August 4, 1995
                   Robert E. Julian                      Director

                              *
     -------------------------------------------        Executive Vice President and            August 4, 1995
                  Kenneth E. Stinson                     Director

                              *
     -------------------------------------------        Controller                              August 4, 1995
                  Eric J. Mortensen                      (Principal Accounting Officer)

     -------------------------------------------        Director                                 August , 1995
                    Richard Geary
</TABLE>
    

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

<C>                                                     <S>                                   <C>
                              *
     -------------------------------------------        Director                                August 4, 1995
                  Leonard W. Kearney

                              *
     -------------------------------------------        Director                                August 4, 1995
                   Richard R. Jaros

                              *
     -------------------------------------------        Director                                August 4, 1995
                 George B. Toll, Jr.

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

                              *
     -------------------------------------------        Director                                August 4, 1995
                  Bruce E. Grewcock

                              *
     -------------------------------------------        Director                                August 4, 1995
                   Tait P. Johnson

                              *
     -------------------------------------------        Director                                August 4, 1995
                    James Q. Crowe

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

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

     -------------------------------------------        Director                                 August , 1995
                  Peter Kiewit, Jr.

                     /s/ MATTHEW J. JOHNSON
     -------------------------------------------
                  Matthew J. Johnson
                   Attorney-In-Fact
</TABLE>
    

                                      II-6
<PAGE>
                           MFS DIRECTORS AND OFFICERS

   
    Pursuant to the requirements of the  Securities Act of 1933, this  Amendment
No.  2 has  been signed by  the following persons  in the capacities  and on the
dates indicated.
    

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

<C>                                                     <S>                                   <C>
                        /s/ JAMES Q. CROWE              Chairman of the Board and Chief
     -------------------------------------------         Executive Office                       August 4, 1995
                    James Q. Crowe                       (Principal Executive Officer)

                                                        Senior Vice President, Chief
                              *                          Financial Officer
     -------------------------------------------         (Principal Financial Officer) and      August 4, 1995
                 R. Douglas Bradbury                     Director

                              *
     -------------------------------------------        Vice President and Controller           August 4, 1995
                   Robert J. Ludvik                      (Principal Accounting Officer)

     -------------------------------------------        Director                                 August , 1995
                    Howard Gimbel

                              *
     -------------------------------------------        Director                                August 4, 1995
                   Royce J. Holland

                              *
     -------------------------------------------        Director                                August 4, 1995
                   Richard R. Jaros

                              *
     -------------------------------------------        Director                                August 4, 1995
                   Robert E. Julian

     -------------------------------------------        Director                                 August , 1995
                   David C. McCourt

     -------------------------------------------        Director                                 August , 1995
                  Ronald W. Roskens
</TABLE>
    

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

<C>                                                     <S>                                   <C>
                              *
     -------------------------------------------        Director                                August 4, 1995
                  Walter Scott, Jr.

                              *
     -------------------------------------------        Director                                August 4, 1995
                  Kenneth E. Stinson

     -------------------------------------------        Director                                 August , 1995
                  Michael B. Yanney

                        /s/ JAMES Q. CROWE
     -------------------------------------------
                    James Q. Crowe
                   Attorney-In-Fact
</TABLE>
    

                                      II-8
<PAGE>
                                 EXHIBIT INDEX

   
<TABLE>
<CAPTION>
EXHIBIT                                                                    SEQUENTIAL
 NO.                                                                        PAGE NO.
------                                                                     ----------
<C>     <S>                                                                <C>
   2.1  Form of Securities Purchase Agreement between KDG and MFS*
   2.2  Form of Distribution Agreement by and among PKS, KDG, KCG 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    Ruling Letter 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)
  23.6  Consent of Willkie Farr & Gallagher (included in its opinion
         filed as Exhibit 5.2)*
  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.*
  99.7  Option Agreement
<FN>
------------------------
*   Previously filed.
**  Filed under an Application for Confidential Treatment pursuant to Rule 406.
</TABLE>
    

<PAGE>
   
                    OPINION OF SUTHERLAND, ASBILL & BRENNAN
    

                                                                     EXHIBIT 5.1

                                                                  August 4, 1995

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

Ladies and Gentlemen:

    We have acted as counsel to Peter Kiewit Sons', Inc., a Delaware corporation
(the  "Company"),  in  connection  with  its  proposed  offer  to  exchange (the
"Exchange Offer")  (i)  the  Company's Class  D  Diversified  Group  Convertible
Exchangeable  Common Stock, par  value $0.0625 per share  ("Class D Stock"), for
any and all outstanding  shares of the Company's  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) Class C Stock  and Class D Stock for
any and all of the Company's outstanding 1990 Series Convertible Debentures  due
October 31, 2000 and 1991 Series Convertible Debentures due October 31, 2001 and
(iii)  Class D Stock  for any and  all of the  Company's outstanding 1993 Series
Class D Convertible  Debentures due October  31, 2003, all  as described in  the
joint  registration  statement of  the Company  and MFS  Communications Company,
Inc., a Delaware corporation, on  Form S-4 (the "Registration Statement")  filed
with   the  Securities  and  Exchange   Commission.  The  Company's  convertible
debentures  described  above  are  referred   to  collectively  herein  as   the
"Exchangeable Debentures."

    We  have participated in  the preparation of  the Registration Statement and
have examined  originals or  copies, certified  or otherwise  identified to  our
satisfaction  by public officials or officers of the Company as authentic copies
of originals, of (i) the Company's Restated Certificate of Incorporation and its
by-laws, (ii) resolutions of the board of directors of the Company approving the
Exchange Offer and the issuance of Class C Stock and Class D Stock in connection
therewith and (iii) such  other documents as in  our judgment were necessary  to
enable  us to render the opinions expressed below. In our review and examination
of all  such  documents, we  have  assumed the  legal  capacity of  all  natural
persons,  the genuineness of  all signatures, the  authenticity of all documents
and records submitted  to us  as originals,  and the  conformity with  authentic
originals  of all documents and records submitted  to us as copies. We have also
assumed that, immediately prior to the  time the Exchange Offer is  consummated,
(i) each share of Class B Stock and Class C Stock issued and outstanding will be
duly  authorized, validly  issued, fully paid  and nonassessable,  and (ii) each
Exchangeable Debenture will  be a  legal, valid  and binding  obligation of  the
Company,  enforceable against the  Company in accordance with  its terms. To the
extent we have deemed  appropriate, we have relied  upon certificates of  public
officials  and certificates and statements of  corporate officers of the Company
as to certain factual matters.

    This opinion is limited to the laws of the State of Delaware, and we express
no opinion  with respect  to the  laws of  any other  jurisdiction. We  are  not
members  of the  bar of the  State of Delaware,  and we have  not consulted with
Delaware counsel with respect to this opinion letter. The opinions expressed  in
this letter, insofar as they relate to matters governed by the laws of the State
of  Delaware, are based on  our review of the  Delaware General Corporation Law,
with which we are familiar.

    Based upon  and subject  to  the foregoing  and  our investigation  of  such
matters of law as we have considered advisable, we are of the opinion that:

        1.  The Company is a corporation duly incorporated, validly existing and
    in good standing under the laws of the State of Delaware.

        2.   Upon the consummation of the  Exchange Offer, the shares of Class C
    Stock and  Class  D  Stock  issued  in  the  Exchange  Offer  will  be  duly
    authorized, validly issued, fully paid and nonassessable.
<PAGE>
    We  hereby  consent to  the  filing of  this opinion  as  an exhibit  to the
Registration Statement and to the reference  to our firm in the "Legal  Matters"
section  of the joint  prospectus included in the  Registration Statement. We do
not admit by giving this  consent that we are in  the category of persons  whose
consent is required under Section 7 of the Securities Act of 1933, as amended.

                                          Very truly yours,

                                          /s/ Sutherland, Asbill & Brennan

<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 Amendment No. 2 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
August 4, 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
Amendment No. 2 to 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
   
August 4, 1995
    

<PAGE>
                                                                    EXHIBIT 23.3

                        CONSENT OF INDEPENDENT AUDITORS

   
    We  consent to  the incorporation  by reference  in Amendment  No. 2  to 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
August 3, 1995
    

<PAGE>
                                                                    EXHIBIT 23.4

                       CONSENT OF INDEPENDENT ACCOUNTANTS

   
    We  consent to  the incorporation  by reference  in Amendment  No. 2  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
August 3, 1995
    

<PAGE>
   
                                                                    EXHIBIT 99.7
    

   
                            FORM OF OPTION AGREEMENT
    

   
    Agreement dated as of April __, 1995, among Richard Geary ("Geary"), William
L. Grewcock ("Grewcock"), and Walter Scott, Jr. ("Scott").
    

   
    1.   Peter Kiewit Sons',  Inc. ("PKS") has announced  that it may distribute
all of the shares of capital  stock of MFS Communications Company, Inc.  ("MFS")
owned by it to the holders of PKS Class D Stock (the "Spin-off").
    

   
    2.   In the event  the Spin-off is consummated,  Geary shall have the right,
exercisable at any  time during the  six-month period beginning  on the date  on
which  the Spin-off is  consummated (the "Spin  Date"), to sell  to Grewcock and
Scott all, but  not less than  all, of the  shares of MFS  Common Stock and  MFS
Preferred  Stock received  by Geary  in connection  with the  Spin-off (the "Put
Right").
    

   
    3.  The purchase price (the "Purchase Price") per share for the shares to be
sold shall be, in the  case of MFS Common Stock,  the lowest of (i) the  closing
price  of the MFS Common Stock  on the Spin Date, (ii)  the closing price of the
MFS Common Stock on  the date on  which the Exercise  Notice (defined below)  is
delivered  and (iii) $35.00 and,  in the case of  the MFS Preferred Stock, $1.00
per share.
    

   
    4.   To  exercise the  Put  Right, Geary  shall  provide written  notice  to
Grewcock  and Scott, setting forth the number  of shares of MFS Common Stock and
MFS Preferred  Stock he  proposes to  sell pursuant  to paragraph  2 above  (the
"Exercise Notice").
    

   
    5.   If Geary exercises the Put Right, unless otherwise agreed between Geary
and Scott, Grewcock and Scott shall each pay 50% of the Purchase Price and shall
each be  entitled  to receive  50%  of the  shares  being sold  hereunder.  Such
Purchase  Price shall be paid within fifteen  business days of the date on which
Geary delivers the Exercise Notice by  wire transfer to an account specified  by
Geary.  On such  date, Geary  shall deliver  to Grewcock  and Scott certificates
representing all of the shares sold  hereunder, duly endorsed or accompanied  by
appropriate stock powers.
    
                                          ______________________________________
   
                                          Richard Geary
    
                                          ______________________________________
   
                                          William L. Grewcock
    
                                          ______________________________________
   
                                          Walter Scott, Jr.
    


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