NEW RICHMOND, Wis. (AP) – Authorities in western Wisconsin are investigating the death of a 4-year-old child in a snowplowing accident.  St. Croix County sheriff’s deputies and emergency crews were sent to a home in Star Prairie Township just before noon Tuesday on a report of a child who had been struck by a vehicle.  The child was pronounced dead at a New Richmond hospital.  The sheriff’s office says preliminary information indicates a relative of the child was plowing snow with a pickup truck when the child was struck.  Further details were not immediately released, pending further investigation.