Back Forty is a 100%-owned development-stage project delineating a gold-rich volcanogenic massive sulfide (VMS) deposit located along the mineral-rich Penokean Volcanic Belt in Michigan’s Upper Peninsula. Historically, Aquila Resources Inc. and various past joint venture partners, including Hudbay Minerals, invested more than $95 million exploring and advancing Back Forty.

On August 5, 2020, Aquila published the results of a Preliminary Economic Assessment (PEA) on Back Forty. Aquila's historic Technical Report can be downloaded here.