[2] The lake's name seems to have been given by a prospector for the Québec Cartier Mining Company who was part of the team that discovered the rich deposit of iron ore in 1957.

The first stage was autogenous grinding, and then the ore was separated using a gravimetric circuit with spiral classifiers.

[5] The company made further investments in the 1970s at Mont-Wright, Fermont and Fire Lake, but during a steel market crisis was forced to shut down Lac-Jeannine.

[3] The mill at Lac Jeannine continued to treat iron ore from Fire Lake until 1985.

[2] The accessible part of the tailings, about 127 million tons in a sub-aerial pile, cover about 2.7 square kilometres (1.0 sq mi).