CONNER&WINTERS

OKLAHOMA CITY Irwin H. Steinhorn John W. Funk Jared D. Giddens Robin F. Fields Kiran A. Phansalkar Victor F. Albert Mitchell D. Blackburn Mark H. Bennett Bryan J. Wells Laura McCasland Holbrook J. Dillon Curran C. Brad Williams Justin L. Pybas
___________   Peter B. Bradford   TULSA   Henry G. Will Joseph J. McCain, Jr. Lynnwood R. Moore, Jr. Robert A. Curry Steven W. McGrath D. Richard Funk Randolph L. Jones, Jr. J. Ronald Petrikin Larry B. Lipe James E. Green, Jr. Martin R. Wing John W. Ingraham Andrew R. Turner Gary L. Betow Gentra Abbey Sorem R. Kevin Redwine Tony W. Haynie Bruce W. Freeman David R. Cordell C. Raymond Patton, Jr. Paul E. Braden Robert J. Melgaard P. Scott Hathaway Lawrence A. Hall Timothy T. Trump Mark E. Dreyer Teresa Meinders Burkett Nancy E. Vaughn Mark D. Berman Katherine G. Coyle Beverly K. Smith Melodie Freeman-Burney R. Richard Love III Robert D. James Stephen R. Ward Jeffrey R. Schoborg Anne B. Sublett J. Ryan Sacra Jason S. Taylor Katy Day Inhofe Julia Forrester-Sellers ATTORNEYS & COUNSELORS AT LAW   Conner & Winters, LLP 1700 One Leadership Square 211 North Robinson Oklahoma City, Oklahoma 73102-7101 405-272-5711 Fax 405-232-2695 www.cwlaw.com ___________   Melinda L. Kirk Debra R. Stockton P. Bradley Bendure Kathryn J. Kindell Alissa A. Hurley Jed W. Isbell Paige N. Shelton Jason B. Coutant Allison McGrath Gardner Elizabeth G. Zeiders __________
William G. von Glahn Bob F. McCoy Lynn P. Mattson
___________   James R. Ryan Russell H. Harbaugh, Jr. David O. Cordell   NORTHWEST ARKANSAS   John R. Elrod¹ Greg S. Scharlau Terri Dill Chadick Vicki Bronson Todd P. Lewis¹ P. Joshua Wisley Kerri E. Kobbeman² ___________
Charles E. Scharlau¹ WASHINGTON, D.C.
G. Daniel Miller¹ Donn C. Meindertsma¹ Rabeha S. Kamaluddin³ ___________
Henry Rose¹ Erica L. Summers¹   HOUSTON, TEXAS   Gregory D. Renberg   JACKSON, WYOMING

Randolph L. Jones, Jr.

SANTA FE, NEW MEXICO

Douglas M. Rather ________________

Benjamin C. Conner        1879-1963 John M. Winters, Jr.        1901-1989   ¹Not Admitted in Oklahoma ²Not Admitted in Arkansas ³Admitted only in California; admission in the District of Columbia pending; supervision by Donn C. Meindertsma, a member of the District of Columbia Bar

September 10, 2007

LSB Industries, Inc.

16 South Pennsylvania

P.O. Box 754

Oklahoma City, Oklahoma 73101

Re: LSB Industries, Inc.; Form S-8 Registration Statement; Non-Qualified

Stock Option Agreements – 2006; Our File No. 07033-0001

Ladies and Gentlemen:

We are delivering this opinion to you in connection with the preparation and filing with the Securities and Exchange Commission (the “Commission”) under the Securities Act of 1933, as amended (the “Act”), of the Registration Statement on Form S-8 (the “Registration Statement”) of LSB Industries, Inc., a Delaware corporation (the “Company”), for the registration of 450,000 shares of the Company’s common stock, $0.10 par value (the “Common Stock”), to be issued by the Company pursuant to the Non-Qualified Stock Option Agreement, dated June 19, 2006, granted to Dan Ellis (250,000 shares) and the Non-Qualified Stock Option Agreement, dated June 19, 2006, granted to John Bailey (200,000 shares) (collectively, the “Non-Qualified Agreements”).

In connection with this opinion, the undersigned has examined and relied upon such corporate records, certificates, other documents and questions of law, as we have considered necessary or appropriate for the purposes of this opinion, including, but not limited to, the following:

(a)   Company’s Amended and Restated Certificate of Incorporation, as amended;

(b)   Company’s Bylaws, as amended;

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(c)   the Non-Qualified Agreements;

(d)   Minutes of the Compensation and Option Committee of the Company, dated June 19, 2006;

(e)   Certificate of Good Standing of the Company issued by the Secretary of State of Delaware on September 7, 2007;

(f)   Consent of Ernst & Young, LLP, dated September 7, 2007;

(g)   Form S-8 Registration Statement; and

(h)   Summary Information regarding the Non-Qualified Agreements.

In our examination, we have assumed the genuineness of all signatures, the legal capacity of all persons, the authenticity of all documents submitted as originals, the conformity with the original documents of all documents submitted as certified or photostatic copies, and the authenticity of the originals of such copies.  We have further assumed that any shares of the Company’s Common Stock to be issued under the Non-Qualified Agreements will have been issued pursuant to the terms of the Non-Qualified Agreements and will have been registered in accordance with the Act, absent the application of an exemption from registration, prior to the issuance of such shares.  We have been advised by the Company that each Non-Qualified Agreement was issued to an employee of the Company or one of its subsidiaries while the recipient was duly employed by the Company or one of its subsidiaries, and in issuing this letter, we have relied upon such representation.

In reliance upon and based on such examination and review, we are of the opinion that, when the Registration Statement becomes effective pursuant to the rules and regulations of the Commission, the 450,000 shares of Common Stock which may be issued pursuant to the Non-Qualified Agreements will constitute, when purchased and issued pursuant to the terms of the Non-Qualified Agreements, duly authorized, validly issued, fully paid and nonassessable shares of Common Stock of the Company.

We hereby consent to the filing of this opinion as Exhibit 5.1 to the Registration Statement.

Very truly yours,

CONNER & WINTERS, LLP

         /s/ Conner & Winters, LLP 

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