Compass Minerals International is a holding company. Through its subsidiaries, Co. is a provider of minerals focused on delivering where and when it matters. Co. has two reportable segments: Salt and Plant Nutrition. Through its Salt segment, Co. produces, markets and sells salt (sodium chloride) and magnesium chloride in North America and sodium chloride in the U.K. Co.'s Salt products include rock salt, mechanically-evaporated salt, solar-evaporated salt, brine magnesium chloride and flake magnesium chloride. Co.'s Plant Nutrition segment includes the production and sales of sulfate of potash (SOP). Co.'s SOP is sold in various grades under its Protassium+ brand.