Winona County narrowly won another legal victory Monday in its effort to outlaw frac sand mining.
In a split decision, a three-judge panel of the Minnesota Court of Appeals upheld a lower-court ruling that found the county's two-year-old ban was neither an unconstitutional limitation on interstate commerce nor a governmental "taking" without compensation.
The Winona County Board was the first in the state to adopt a countywide ban to address the mining of silica sand, a key component used to fracture shale rock to extract oil and natural gas. It has, however, allowed mining to continue for construction sand, a cheaper and less-pure material that's used on roadways and for other commercial purposes.
Minnesota Sands, a mining company that had acquired mineral rights to areas in the county rich with silica sand, sued to overturn the measure, arguing that it discriminates against its business. Winona District Judge Mary Leahy ruled for the county in November and dismissed the suit, prompting the company's appeal.
Judge Renee L. Worke wrote the 17-page opinion for the Minnesota Court of Appeals, joined by Judge Lucinda E. Jesson. Judge Matthew E. Johnson wrote a 26-page dissent in which he agreed that the county's ordinance was not a "total" regulatory taking of a private property owner's rights, but largely disagreed with the majority on every other point.
"A county ordinance that even-handedly bans all industrial-mineral mining, including silica-sand mining, within the county does not discriminate against interstate commerce," Worke wrote in the opinion issued Monday.
Minnesota Sands has 30 days to appeal to the Minnesota Supreme Court, said Ken Fritz, Winona County administrator.
Nevertheless, Monday's ruling produced a guarded sigh of relief among some in Winona County, which passed the ban by a 3-2 vote in 2016 as an amendment to the local zoning ordinance.