AGSCO Corporation history begins in 1888 when the American Graded Sand Company was started by the Wenske family. Herbert Wenske's grandfather was one of the founders of the Wedron Silica Sand Company in Wedron, Illinois. Herbert Wenske's father started the American Graded Sand Company in Chicago, Illinois to custom grade silica sand for the terra cotta plastering market that was developing in Chicago. The sand was hauled the 100 miles from Wedron, Illinois to Chicago, Illinois by mule drawn wago