Compass Minerals International, Inc. engages in producing and marketing minerals, including salt, sulfate of potash specialty fertilizer, and magnesium chloride. It operates through the following segments: Salt, Plant Nutrition North America, and Plant Nutrition South America. The Salt segment involves in producing salt and magnesium chloride for use in road deicing and dust control, food processing, water softeners, pool salt, and agricultural and industrial applications. The Plant Nutrition North America segment includes sales sulfate of potash and micronutrients. The Plant Nutrition South America segment offers manufacturing, distributing, and marketing plant nutrients and supplements developed and formulated from essential primary and secondary nutrients, micronutrients, and biostimulants. The company was founded in 1993 and is headquartered in Overland Park, KS.