Noront Resources plans to build a “model mine for the future”
The Eagle’s Nest site, situated in the wetlands of the James Bay Lowlands, first appeared problematic to develop: the lack of exposed bedrock posed obvious logistical and environmental challenges. Noront’s solution was to develop a subsurface mine plan in which much of the milling facilities would be housed in a series of underground chambers.
“We have a unique situation,” says Paul Semple, Noront’s COO, “and I think we’ve come up with an innovative solution.” For Eagle’s Nest, the subsurface mine plan is possible because of the high competency of the subsurface waste rock – a granodiorite – that is much stronger than concrete and can support large open chambers. The chambers themselves will vary in size, with the largest spanning 16 metres.
The waste rock created by these excavations will be used for roads, concrete and foundations for a base camp.
Producing its own aggregate also allows Noront to control certain logistical and economic risks. “It just made common sense on a lot of fronts,” says CEO Wes Hanson. “Ultimately, I think it’s going to be a cheaper means of construction.” Making larger underground chambers is much less expensive than transporting construction materials by plane or winter road; fewer materials are needed, and much of it is already on site.