Exhibit 5.1


                 [SONNENSCHEIN NATH & ROSENTHAL LLP LETTERHEAD]



May 30, 2008



Kansas City Southern
427 West 12th Street
Kansas City, Missouri  64105

The Kansas City Southern Railway Company
427 West 12th Street
Kansas City, Missouri  64105

The Subsidiaries of Kansas City Southern
Listed on Exhibit A attached hereto


     Re:  The  Kansas  City  Southern  Railway   Company/Kansas   City  Southern
          Registration Statement on Form S-3 (Reg. No. 333-130112)

Ladies and Gentlemen:

     We have  acted as  special  counsel to The  Kansas  City  Southern  Railway
Company, a Missouri corporation (the "Issuer"), Kansas City Southern, a Delaware
corporation  and parent  corporation of the Issuer  ("Parent"),  and each of the
wholly owned  subsidiaries  of Parent set forth on the  attached  Exhibit A (the
"Subsidiary   Guarantors")  in  connection  with  the  registration   under  the
Securities Act of 1933, as amended (the "Act") by the Issuer of an offering (the
"Offer") of up to $275,000,000 in aggregate  principal amount of its 8.0% Senior
Notes due 2015 (the  "Notes").  The Notes are issued  pursuant to an  Indenture,
dated as of May 30, 2008, among the Issuer,  the Guarantors  (defined below) and
U.S. Bank National Association, as trustee (the "Indenture"). The obligations of
the  Issuer  under the Notes are  guaranteed  (collectively,  the  "Guarantees")
pursuant to the terms of the Indenture by Parent and the  Subsidiary  Guarantors
(collectively, the "Guarantors"). The terms the Offer are described in Amendment
No. 2 to the Registration  Statement on Form S-3 (Registration  No.  333-130112)
filed with and automatically  declared  effective by the Securities and Exchange
Commission (the "Commission") on May 23, 2008 (such Registration  Statement,  as
amended  or  supplemented,  is  hereinafter  referred  to as  the  "Registration
Statement").  This opinion is being delivered in accordance with the requirement
of Item  601(b)(5) of Regulation S-K under the Act.  Capitalized  terms used but
not  otherwise  defined  herein  have  the  meanings  ascribed  to  them  in the
Registration Statement.

     In  connection  with this  opinion,  we have  examined  originals or copies
certified  or  otherwise  identified  to our  satisfaction  of  such  documents,
corporate  records and other  instruments  as we have deemed  necessary  for the
purposes  of  this  opinion,  including  (i)  the  certificate  or  articles  of
incorporation or other organizational  documents,  and the bylaws or regulations
of the  Issuer  and each of the  Guarantors,  (ii)  minutes  and  records of the
corporate





proceedings  of the Issuer with respect to the issuance of the Notes,  (iii) the
Registration Statement, and (iv) the Indenture.

     For  purposes of this  opinion,  we have  assumed the  authenticity  of all
documents  submitted to us as originals,  the conformity to the originals of all
documents submitted to us as copies and the authenticity of the originals of all
documents submitted to us as copies. We have also assumed the genuineness of the
signatures  of persons  signing  all  documents  in  connection  with which this
opinion is rendered,  the  authority  of such  persons  signing on behalf of the
parties   thereto  other  than  the  Issuer  and  the  Guarantors  and  the  due
authorization,  execution and delivery of all  documents by the parties  thereto
other  than the  Issuer  and the  Guarantors.  As to any facts  material  to the
opinions  expressed  herein  which  we have  not  independently  established  or
verified, we have relied upon the statements and representations of officers and
other  representatives  of the Issuer,  the Guarantors and others.  We have also
assumed that each of the  Subsidiary  Guarantors  has the power and authority to
enter into and perform its  obligations  under its  Guarantee,  and that neither
entering into or performing its Guarantee is in  contradiction of the applicable
laws of the jurisdiction of formation of the respective Subsidiary Guarantors.

     Our  opinion  expressed  below is  subject  to the  qualifications  that we
express no opinion as to the applicability of, compliance with, or effect of (i)
applicable bankruptcy, insolvency,  reorganization,  moratorium, arrangement and
other laws affecting  creditor's  rights,  including,  without  limitation,  the
effect of statutory or other laws regarding fraudulent  conveyances,  fraudulent
transfers and preferential  transfers,  (ii) the limitations  imposed by general
principles of equity,  including,  without limitation,  concepts of materiality,
reasonableness,  good faith and fair dealing and the possible  unavailability of
specific  performance or injunctive relief regardless of whether considered in a
proceeding in equity or at law; and (iii) public policy considerations which may
limit the rights of parties to obtain certain remedies.

     We  render  no  opinion  herein  as to  matters  involving  the laws of any
jurisdiction  other than the present laws of the United  States of America,  the
present laws of the State of Missouri  (excluding  local laws), the present laws
of the State of New York (excluding local laws), the General  Corporation Law of
the State of  Delaware  and the present  judicial  interpretations  thereof.  We
advise you that the issues addressed by this opinion may be governed in whole or
in part by other  laws,  and we express no  opinion as to whether  any  relevant
difference exists between the laws upon which our opinion is based and any other
laws that may actually govern. We note that the enforceability of the Guarantees
may be governed in part by the laws of the jurisdictions under which each of the
Guarantors  is formed.  Because we are not  admitted  to  practice  in each such
jurisdiction, we have assumed for purposes of our opinion that the laws of these
jurisdictions with respect to enforceability  are not materially  different than
the laws of the State of New York.

     Based upon and subject to the assumptions,  qualifications,  exclusions and
other limitations contained in this letter, we are of the opinion that when: (i)
the Indenture has been duly qualified  under the Trust Indenture Act of 1939, as
amended,  and (ii) the Notes and the  Guarantees  have  been duly  executed  and
authenticated  in  accordance  with the  provisions  of the  Indenture  and duly
delivered  to the  purchasers  thereof,  the Notes  will be  validly  issued and
binding  obligations of the Issuer and the Guarantees will be validly issued and
binding obligations of the Guarantors.





     This opinion is limited to the specific  issues  addressed  herein,  and no
opinion may be inferred or implied  beyond that expressly  stated  herein.  This
opinion  shall  not be  construed  as or  deemed to be a  guaranty  or  insuring
agreement. This opinion is rendered on the date hereof and we have no continuing
obligation  hereunder  to  inform  you of  changes  of law,  including  judicial
interpretations  of law, or fact subsequent to the date hereof or of facts which
we become aware of after the date hereof.

     This  opinion is solely for your  benefit and may not be  furnished  to, or
relied upon by, any other person or entity without the express  written  consent
of the  undersigned.  However,  we hereby  consent to the filing of this opinion
with the  Commission  as  Exhibit  5.1 to the  Registration  Statement.  We also
consent to the  reference to our firm under the heading  "Legal  Matters" in the
Registration  Statement. In giving this consent, we do not thereby admit that we
are in the category of persons whose consent is required  under Section 7 of the
Act or the rules and regulations of the Commission.


                                                 Sincerely,









                                    Exhibit A



                                                                                     

                                                                                        Jurisdiction of
                                                                                        Incorporation
Name                                                                                    or Organization

Gateway Eastern Railway Company....................................................     Illinois
Mid-South Microwave, Inc...........................................................     Delaware
PABTEX GP, LLC.....................................................................     Texas
PABTEX, L.P........................................................................     Delaware
Rice-Carden Corporation............................................................     Missouri
SIS Bulk Holding, Inc..............................................................     Delaware
KCS Transportation Company.........................................................     Delaware
Southern Development Company.......................................................     Missouri
Southern Industrial Services, Inc..................................................     Delaware
Trans-Serve, Inc...................................................................     Delaware