Production at the Kenosha, Wisconsin, plant started in 1896, making it one of Compass Minerals’ oldest U.S. plants. It started as N.S. Koos & Sons fertilizer and served local farmers by analyzing their soil and recommending grades of fertilizer depending on the crops they desired to grow. It transferred ownership a few times and in 1998, the plant was acquired by Compass Minerals.

Salt arrives at the Kenosha plant via rail cars from the Ogden, Utah, plant and barges and vessels sent from the Chicago plant. The plant processes six different different grades of salt that are blended with raw materials and packaged into consumer grade deicing. In 2002, the plant started packaging water conditioning salt, as well.

4500 13th Court
Kenosha, Wisconsin 53140