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 1)   
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 Form S-8 No. 333-160718 pertaining to the Mueller Industries, Inc. 2009 Stock Incentive Plan, 
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 2)   
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 Form S-8 No. 333-138413 pertaining to the Mueller Industries, Inc. 2002 Stock Option Plan, 
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 3)   
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 Form S-8 No. 333-113214 pertaining to the Mueller Industries, Inc. Stock Option Agreements for William D. O’Hagan, Michael O. Fifer, and Robert J. Pasquarelli, 
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 4)   
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 Form S-8 No. 333-91238 pertaining to the Mueller Industries, Inc. 2002 Stock Option Plan, 
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 5)   
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 Form S-8 No. 333-72726 pertaining to the Stock Option Agreements for Harvey L. Karp and William D. O’Hagan, 
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 6)   
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 Form S-8 No. 333-52325 pertaining to the Mueller Industries, Inc. 1998 Stock Option Plan, and 
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 7)   
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 Form S-8 No. 33-54705 pertaining to the Mueller Industries, Inc. 1994 Stock Option Plan and the 1994 Non-Employee Director Stock Option Plan; 
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 /S/ Ernst & Young LLP 
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 Memphis, Tennessee 
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 February 22, 2011 
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