The Hardrock East Gold Project consists of a land package totaling approximately 142 square kilometres covering the eastern portion of the Beardmore-Geraldton gold camp in Northern Ontario. The land position includes claim blocks known as Milestone, Adel and Klotz Lake. In October of 2011, Goldstream entered into an agreement with Prodigy which allowed Goldstream, through various financing and work commitments, to acquire a 100% interest in the Hardrock East project.
Exploration by Prodigy occurred mainly during 2010 and 2011 and included extensive geologic study and fieldwork. In December of 2012, Goldstream contracted AMEC to conduct a non-compliant resource estimate on the Milestone target. The resultant resource from this study was designated only as a "mineral inventory" with no economic parameters applied except for using varying cutoff grades. The zone of mineralization was modeled by Goldstream geologists and at a 0.4 g/t cut-off, AMEC determined that the Milestone deposit contains a mineral inventory of 25.5 million tonnes grading 0.87 g/t gold for 710,713 ounces (Non-NI 43-101 Compliant). In 2015, Argonaut acquired 100 % of the Hardrock East property.