The Winona City Planning Commission continued its ongoing study of sand mining operation issues Monday.
             
The commission addressed traffic impacts on the city from trucks hauling frac sand.

Dave Christianson, head of the Minnesota Department of Transportation's Rail operations, says currently 15-percent of all
business done at the Winona Port is silica sand with the rest being mostly agriculture.

Christianson says the peak demand for frac sand is 40 to 60 million tons per year, which explains why more frac sand projects spring up almost daily.

Staff will make their recommendations on the truck traffic issue at the next meeting in September.