Exhibit 99.1
 
  9601 AMBERGLEN BLVD., SUITE 117
    
    306 WEST SEVENTH STREET, SUITE 302
    
    1000 LOUISIANA STREET, SUITE 625AUSTIN, TEXAS 78729-1106
    
    FORT WORTH, TEXAS 76102-4987
    
    HOUSTON, TEXAS 77002-5008512-249-7000
    
    817-336-2461
    
    713-651-9944FAX 512-233-2618
    
    FAX 817-877-3728 
www.cgaus.com
    
    FAX 713-651-9980
  
 Re:
    
    Evaluation SummaryMagnum Hunter Resources Corp. Interests
Total Proved Reserves As
of December 31, 2010Pursuant to the Guidelines of theSecurities and Exchange Commission forReporting Corporate Reserves andFuture Net Revenue
  Securities and Exchange Commission
 Proved
    
    ProvedDeveloped
    
    Developed
    
    Proved
    
    Proved
    
    TotalProducing
    
    Non-Producing
    
    Developed
    
    Undeveloped
    
    ProvedNet ReservesOil
    
    - Mbbl
    
    
    3,608.8
    
    
    
    111.5
    
    
    
    3,720.4
    
    
    
    3,104.0
    
    
    
    6,824.4Gas
    
    - MMcf
    
    
    13,401.3
    
    
    
    5,486.4
    
    
    
    18,887.7
    
    
    
    20,564.2
    
    
    
    39,451.9NGL
    
    - Mbbl
    
    
    0.0
    
    
    
    0.0
    
    
    
    0.0
    
    
    
    0.0
    
    
    
    0.0RevenueOil
    
    
    - M$
    
    
    
    259,287.1
    
    
    
    8,027.4
    
    
    
    267,314.5
    
    
    
    222,638.9
    
    
    
    489,953.5Gas
    
    
    - M$
    
    
    
    69,035.0
    
    
    
    28,777.2
    
    
    
    97,812.2
    
    
    
    119,299.6
    
    
    
    217,111.8NGL
    
    
    - M$
    
    
    
    0.0
    
    
    
    0.0
    
    
    
    0.0
    
    
    
    0.0
    
    
    
    0.0Other
    
    
    - M$
    
    
    
    2,722.8
    
    
    
    0.0
    
    
    
    2,722.8
    
    
    
    0.0
    
    
    
    2,722.8Severance Taxes
    
    
    - M$
    
    
    
    16,989.0
    
    
    
    2,106.7
    
    
    
    19,095.7
    
    
    
    18,450.9
    
    
    
    37,546.5Ad Valorem Taxes
    
    
    - M$
    
    
    
    4,832.2
    
    
    
    654.6
    
    
    
    5,486.8
    
    
    
    4,250.2
    
    
    
    9,737.0Operating Expenses
    
    
    - M$
    
    
    
    132,734.2
    
    
    
    5,637.0
    
    
    
    138,371.2
    
    
    
    67,889.0
    
    
    
    206,260.3Other Deductions
    
    
    - M$
    
    
    
    0.0
    
    
    
    0.0
    
    
    
    0.0
    
    
    
    0.0
    
    
    
    0.0Investments
    
    
    - M$
    
    
    
    22.9
    
    
    
    5,165.0
    
    
    
    5,187.9
    
    
    
    72,028.0
    
    
    
    77,215.9Net Cash Flows
    
    
    - M$
    
    
    
    176,466.6
    
    
    
    23,241.3
    
    
    
    199,707.9
    
    
    
    179,320.5
    
    
    
    379,028.4Discounted @ 10%(Present Worth)
    
    
    - M$
    
    
    
    101,272.6
    
    
    
    10,507.5
    
    
    
    111,780.1
    
    
    
    66,034.2
    
    
    
    177,814.3




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##### 



Magnum Hunter Resources Corporation
    Presentation
   Hydrocarbon Pricing




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##### 



Magnum Hunter Resources Corporation
 SEC Pricing
    
    Strip PricingAvg. Jan.-Dec. 2010
    
    NYMEX 12-31-2010 PricingWTI Cushing
    
    Henry Hub
    
    WTI Cushing
    
    Henry HubOil Price
    
    Gas Price
    
    Oil Price
    
    Gas PriceYear
    
    $/STB
    
    $/MMBTU
    
    $/STB
    
    $/MMBTU2011
    
    
    79.43
    
    
    
    4.37
    
    
    
    93.21
    
    
    
    4.552012
    
    
    
    
    
    
    
    
    
    
    93.95
    
    
    
    5.082013
    
    
    
    
    
    
    
    
    
    
    92.95
    
    
    
    5.332014
    
    
    
    
    
    
    
    
    
    
    92.40
    
    
    
    5.492015+
    
    
    79.43
    
    
    
    4.37
    
    
    
    92.55
    
    
    
    5.64
  Economic Parameters
  SEC Conformance and Regulations
   Reserve Estimation Methods




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##### 



Magnum Hunter Resources Corporation
 MHR
 General Discussion
  not MHR
 F W
 Yours very truly,CAWLEY, GILLESPIE & ASSOCIATES, INC.Texas Registered Engineering Firm F-693(-s- W. Todd Brooker)
    (SEAL)W. Todd Brooker, P. E.Vice President