Sen. Chuck Grassley (R-Iowa) pleaded with President Trump to exempt potash from the tariffs he is placing on imports from ...

Osceola County mine would produce tons of table salt and potassium chloride — potash — a critical mineral used by farmers to fertilize their crops.

K+S, a German mining group, warns that U.S. import tariffs on potash fertilizers will challenge domestic farmers. The U.S.

A proposed new mine in Osceola County to extract nearly 800,000 tons per year of the agricultural fertilizer potash and 1 million tons per year of table salt received a major boost in the waning ...