- Karen Zamora and Josephine Marcotty, "Winona County passes frac sand ban, first in the state to take such a stand," StarTribune, November 22, 2016.
"The County Board passed the ban by a 3-2 vote in the form of an amendment to Winona County’s existing zoning ordinance. It prohibits any new operations for the production of industrial minerals, including the silica sand used in hydraulic fracturing."
The ban comes amid signs that frac sand mining may begin to intensify once again following a two-year downturn.