Compass Minerals to Increase Prices of Sulfate of Potash Specialty Fertilizers

OVERLAND PARK, Kan.--(Business Wire)--
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.

Compass Minerals
Peggy Landon, 913-344-9315
Director of Investor Relations and
Corporate Communications

Copyright Business Wire 2008