OFFICE LEASE
 LANDLORD:
 TENANT:
 Regarding the Premises Located at:




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TABLE OF CONTENTS
 Section
    
    
    
    Page1.
    
    Basic Lease Terms
    
    
    12.
    
    Demise and Use
    
    
    33.
    
    [Intentionally Omitted]
    
    
    34.
    
    Base Rent
    
    
    35.
    
    Operating Expenses (Including Taxes)
    
    
    46.
    
    Compliance
    
    
    107.
    
    Parking
    
    
    118.
    
    Hazardous Substances
    
    
    129.
    
    Insurance
    
    
    1210.
    
    Indemnification
    
    
    1411.
    
    Damage or Casualty
    
    
    1512.
    
    Eminent Domain
    
    
    1713.
    
    Assignment and Subletting
    
    
    1714.
    
    Alteration by Tenant
    
    
    1915.
    
    Intentionally Omitted
    
    
    2116.
    
    Mortgagee Provisions, Estoppel and Subordination
    
    
    2117.
    
    Expiration of Lease and Surrender of Possession
    
    
    2218.
    
    Default
    
    
    2319
    
    Remedies
    
    
    2420.
    
    Miscellaneous
    
    
    26
 EXHIBITS:RiderExhibit A  1
    
    Outline of PremisesExhibit A  2
    
    Legal Description of LandExhibit A  3
    
    Refusal SpaceExhibit B
    
    Rules and RegulationsExhibit C  1
    
    Work LetterExhibit C  2
    
    Preliminary PlansExhibit C  3
    
    Air Conditioned Shell ConditionExhibit D
    
    Confirmation of Lease TermsExhibit E
    
    Form of SNDAExhibit F
    
    Form of Estoppel CertificateExhibit G
    
    Designated Smoking Area
 ii




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OFFICE LEASE
 Lease I-10 EC CORRIDOR #2 LIMITED PARTNERSHIP, a Delaware limited
partnership Landlord CARBO CERAMICS INC., a Delaware corporation ( Tenant
  1.
    
    BASIC LEASE TERMS.
 1.1
    
    Landlords Address for Notice:
    
    I-10 EC Corridor #2 Limited Partnership 

c/o Trammell Crow Company 
2800 Post Oak Boulevard, Suite 2300
Houston, Texas 77056
Attn: Asset ManagerWith copy to:
    
    CB Richard Ellis Asset Services, Inc. 
585 North Dairy Ashford 
Houston, Texas 77079
Attn: General Manager of the BuildingWith copy to:
    
    I-10 EC Corridor #2 Limited Partnership 
c/o Principal Real Estate Investors 
801 Grand Avenue, Dept H-137
Des Moines, IA 50392-1370
Attn: Central CRE  Equities TeamRent Payment Address:
    
    I-10 EC Corridor #2 Limited Partnership 
P.O. Box 301111
Property: 253310
Los Angeles, CA 90030-11111.2
    
    Tenants Address for Notice:
    
    CARBO Ceramics Inc. 
575 North Dairy Ashford, Suite 300
Houston, TX 77079
Attn: Vice President of Human ResourcesCARBO Ceramics Inc. 
575 North Dairy Ashford, Suite 300
Houston, TX 77079
Attn: General Counsel
  Exhibit A-1
   1




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Exhibit A-2
 full
  th full
  AnnualDates
    
    Base Rent/RSF
    
    Monthly InstallmentCommencement Date  Month 2
    
    $
    19.75
    
    
    $
    0.00
    *Month 3  Month 12
    
    $
    19.75
    
    
    $
    36,470.02Month 13  Month 14
    
    $
    22.25
    
    
    $
    41,086.48Month 15  Month 26
    
    $
    22.75
    
    
    $
    42,009.77Month 27  Month 38
    
    $
    23.25
    
    
    $
    42,933.06Month 39  Month 50
    
    $
    23.75
    
    
    $
    43,856.35Month 51  Month 62
    
    $
    24.25
    
    
    $
    44,779.65Month 63  Month 74
    
    $
    24.75
    
    
    $
    45,702.94Month 75  Expiration Date
    
    $
    25.25
    
    
    $
    46,626.23
 
 *
    
    Such abatement shall apply solely to payment of the monthly installments of Base Rent, but shall
not be applicable to any other charges, expenses or costs payable by Tenant under this Lease
(including, without limitation, Tenants Proportionate Share of Operating Expenses, Taxes,
Insurance and Common Area Charges). Landlord and Tenant agree that the abatement of rental and
other payments contained in this Section is conditional and is made by Landlord in reliance upon
Tenants faithful and continued performance of the terms, conditions and covenants of this Lease
and the payment of all monies due Landlord hereunder. In the event that Tenant defaults under the
terms and conditions of the Lease, then the unamortized portion of all conditionally abated rental
shall become fully liquidated and immediately due and payable (without limitation and in addition
to any and all other rights and remedies available to Landlord provided herein or at law and in
equity).    Exhibit C-1 .
  2




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Tenants Broker: Studley, Inc.
   1.20
    
    
    Amount Due on Execution:
    
    Base Rent for Month 3:
    
    $
    36,470.02Operating Expenses for Month 1:
    
    $
    20,312.42Security Deposit:
    
    $
    0.00Total:
    
    $
    56,782.44
 2. DEMISE AND USE.
 As Is
 Delivery
 Permitted Use
 3. [INTENTIONALLY OMITTED]
 4. BASE RENT.
 3




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5. OPERATING EXPENSES (INCLUDING TAXES).
  Taxes
   Services
 Generally
        4




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Service Interruption Interruption Notice
 5




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Essential Services
  Common Areas
 General Maintenance
  6




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Property Management Office
 Insurance
 Exclusions from Operating Expenses
      7




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Affiliate
      8




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Payment Final Statement
 Gross Up
 9




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Review of Books and Records CPA Independent
Review
 6. COMPLIANCE. Rules and Regulations Exhibit B
 10




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7. PARKING.
 8. HAZARDOUS SUBSTANCE. Hazardous Substances Permitted Activities Permitted Materials
 11




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9. INSURANCE.
    12




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Tenants Liability Insurance
 Tenants Property
 Workers Compensation/Employers Liability Insurance
 Increase in Coverage
 Waiver of Subrogation
 General Requirements
 13




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Cancellation or Modification
 Miscellaneous
 10. INDEMNIFICATION.
 Release
 Tenants Indemnification
 14




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Tenants Fault
 Landlords Indemnification
 Limitation on Landlords Liability
 No Consequential Damages.
 11. DAMAGE OR CASUALTY.
 Minor Insured Damage
 15




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Major or Uninsured Damage
 Abatement of Rent
 Termination
 Parking
 16




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12. EMINENT DOMAIN.
 13. ASSIGNMENT AND SUBLETTING.
         17




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18




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14. ALTERATIONS BY TENANT.
  19




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If Landlord Manages the Work
 Cost of Work
    
    Percentage Fee$1,000 - $100,000
    
    
    5
    %$100,001 - $250,000
    
    
    4
    %$250,001 - and above
    
    
    3
    %
 If Tenant Manages the Work
 Cost of Work
    
    Percentage Fee$1,000 - $100,000
    
    
    2.5
    %$100,001 - $250,000
    
    
    2
    %$250,001 - and above
    
    
    1.5
    %
    Exhibit C-1
  20




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15. [INTENTIONALLY OMITTED]
 16. MORTGAGEE PROVISIONS; ESTOPPEL; SUBORDINATION.
 Subordination SNDA Mortgage Exhibit E
 Estoppel Exhibit
F
 Notice First Mortgage
 21




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Quiet Enjoyment
 17. EXPIRATION OF LEASE AND SURRENDER OF POSSESSION.
 Holding Over
 Removal and Restoration
 Surrender
 18. DEFAULT.
  22




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19. REMEDIES.
 Terminate the Lease The Wall Street
Journal
 23




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Terminate Tenants Right of Possession
 Lock Out
 Landlords Other Rights and Remedies
 24




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Late Fee
 Interest
 No Waiver
 25




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20. MISCELLANEOUS.
 Not Void
 Entire Agreement
 Authority
 Notices
 Rent
 NO JURY TRIAL
 ASHRAE
 Confidential
 OFAC Compliance
  26




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Wi-Fi
 Successors, Assigns and Liability
 27




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Exculpatory Provisions
 Laws that Govern
 Financial Statements
 Landlords Lien
 Access to Premises
 Real Estate Brokers
 28




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Force Majeure Force Majeure
 WAIVER OF RIGHTS UNDER THE DECEPTIVE TRADE PRACTICES  CONSUMER PROTECTION
ACT
 Energy and Environmental Initiatives
 Counterparts
 Rider and Exhibits
 Contingency
  29




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[SIGNATURE PAGE]
  LANDLORD:
   By:

/s/ W.
Aaron ThielhornName:
    W.
Aaron ThielhornTitle:
    Vice
PresidentDate:

January 27,
2009 TENANT:
CARBO CERAMICS INC.,
a Delaware corporationBy:

/s/ Gary
A. KolstadGary A. KolstadChief Executive OfficerDate:

January 23,
2009 30




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RIDER TO LEASE
 ADDITIONAL PROVISIONS
 1. This Rider Controls .
 2. Extension Option .
  31




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3. Right of Refusal .
 Grant of Right of Refusal rd Exhibit A-3
 Third Party Offer; Exercise Notice
 Expansion Amendment
       Failure to Exercise
 32




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No Default
 Not Transferable
 4. Preferential Right to Lease .
 Preferential Lease Space rd
 Amendment
 Failure to Exercise
 Not Transferable
 No Default
 5. Generator .
 33




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6. Signage .
 Building Standard Identification
 Monument Signage
 34