Duluth, Minnesota four Catholic schools with coverage up to grades 6 or 8, two Protestant schools, two Montessori schools, and six other charter and private schools. Due to its proximity to the Great Lakes, Duluth is the location for the Large Lakes Observatory. The Large Lakes Observatory operates the largest university-owned research vessel in the Great Lakes, the R/V Blue Heron. Built in 1985 for fishing on the Grand Banks, the Blue Heron was purchased by the University of Minnesota in 1997, sailed from Portland, Maine, up the St. Lawrence Seaway to Duluth, and converted into a limnological research vessel during the
Bad River Band of the Lake Superior Tribe of Chippewa Indians from crossing the reservation; it was destined for a copper mine in Michigan. The protestors complained the acid posed an environmental danger to reservation lands and the Lake Superior watershed. The national attention brought by the protests forced the Environmental Protection Agency to stop the use of acid in the mine. The headquarters of the Great Lakes Indian Fish & Wildlife Commission (GLIFWC) is on the Bad River Reservation. The tribe also owns and operates a fish hatchery, which stocks local rivers and lakes with 15 million walleye annually. The Bad River Band Of Lapoint Ojibwe own and operate a