Minnesota Public Radio slideshow:
Leech Lake Superfund site still a health hazard
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Karl Humphrey is an environmental researcher for the Minnesota Chippewa tribe. He grew up near a wood treatment plant in Cass Lake, which is on the Superfund cleanup site. (MPR Photo/Tom Robertson)

Karl Humphrey is an environmental researcher for the Minnesota Chippewa tribe. He grew up near a wood treatment plant in Cass Lake, which is on the Superfund cleanup site.

(MPR Photo/Tom Robertson)
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