By Dan Kraker, Minnesota Public Radi

About 400 union members at a paper mill in Cloquet have voted to authorize a strike.

The vote does not mean that workers at the Sappi Fine Paper Mill will strike. But union leaders now have the authority to call one if they cannot reach a contract agreement with the company.

The authorization vote comes while South Africa-based Sappi is spending $170 million to convert the Cloquet pulp mill to produce a specialized cellulose used in clothing, cell phone screens and other consumer products.

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