Potash accounts for 90% of all the potassium applied to farmland soil in the U.S. in the form of Muriate of Potash (MOP). Potash ore is mined from a half mile beneath the Earth’s surface with ...

This can complicate the process of getting the ore out of the ground. Canada is the world’s top potash producer ... are coated with hydrocarbons during flotation, and then float to the surface ...