Compass Minerals to Increase Prices of Sulfate of Potash Specialty Fertilizers

Great Salt Lake Minerals Corp. (GSL), a subsidiary of Compass Minerals (NYSE: CMP), will increase the price of its sulfate of potash (SOP) specialty fertilizer products by an average of $72 per short ton effective with all shipments April 14, 2008, or as allowed by existing contracts. "This price increase will help support our announced plans for a multi-phased expansion of our SOP production capacity at the Great Salt Lake in Utah, allowing us to better meet the long-term needs of the growers who rely upon our specialty fertilizer products,” said Ronald Bryan, vice president and general manager, GSL. With this latest increase, the company has also introduced a simplified SOP price list which is posted on the GSL website at www.gslminerals.com. The list price for standard, non-granulated SOP will be $658 per short ton at the company’s Ogden, Utah, solar evaporation plant and granular SOP will be $670 per short ton. These new prices will apply on April 14 to all new customers and spot transactions and will be progressively implemented throughout 2008 as current contracts expire. About Compass Minerals Based in the Kansas City metropolitan area, Compass Minerals is a leading producer of inorganic minerals, including salt, sulfate of potash specialty fertilizer and magnesium chloride. The company provides highway deicing salt to customers in North America and the United Kingdom, and produces and distributes consumer deicing and water conditioning products, ingredients used in consumer and commercial foods, specialty fertilizers, and products used in agriculture and other consumer and industrial applications. Compass Minerals also provides records management services to businesses throughout the U.K. This press release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements are based on the Company's current expectations and involve risks and uncertainties that could cause the Company's actual results to differ materially. The differences could be caused by a number of factors including those factors identified in Compass Minerals International's annual report on Form 10-K filed with the Securities and Exchange Commission on February 22, 2008. The Company undertakes no obligation to update any forward-looking statements made in this press release to reflect future events or developments.