Competing with lower-cost mines in Texas, the frac-sand-mining company Hi-Crush recently announced it would be idling part of its plant on Highway Q in Whitehall.

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A frack sand mine won't be cited for releasing an estimated 10 million gallons of wastewater in order to rescue a worker trapped in a holding pond in western Wisconsin.

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Hi-Crush Partners, which operates one of the largest frac-sand mines in Wisconsin, has paused production at a plant in Whitehall, citing weak demand for its product.

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The Minnesota Court of Appeals has upheld Winona County's frack-sand ban.

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Wisconsin frack-sand producers say their business is threatened by some railroads operating under outdated regulations.

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A five-year study has turned a reclaimed Wisconsin frack-sand mine into a wild prairie.

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An environmental group and the Ho-Chunk Nation are suing the Wisconsin Department of Natural Resources over its handling of a permit for a timber company out of Georgia that wants to build a $75 million frack-sand operation in the state.

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A northwestern Wisconsin company has applied for a 60-year permit to expand its sand mine.

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Wisconsin officials say early tests have found no harmful chemicals after a spill near a frack sand mine sent millions of gallons of sludge into waterways.

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Winona County, Minnesota's only county to ban the mining of silica sand for use by the oil and gas industry in hydraulic fracturing, goes to court on Thursday to defend the ban.

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