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Trying to control the cormorant
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Don Schreiner is the DNR's manager of fisheries for Lake Superior. Every year the hatchery at Knife River rears thousands of rainbow trout. (MPR Photo/Stephanie Hemphill)

Don Schreiner is the DNR's manager of fisheries for Lake Superior. Every year the hatchery at Knife River rears thousands of rainbow trout.

(MPR Photo/Stephanie Hemphill)
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