Exhibit 23.1
 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 
We consent to the incorporation by reference in the Registration Statement (Form S-8 No. 333-121965) pertaining to the Compass Minerals International, Inc. Savings Plan of our report dated June 21, 2012, with respect to the financial statements and schedule of the Compass Minerals International, Inc., Savings Plan included in this Annual Report (Form 11-K) for the year ended December 31, 2011.
 
 
/s/ Ernst & Young LLP
   
June 21, 2012
 
Kansas City, Missouri