Marmota Limited have executed a Memorandum of Understanding to investigate cooperating for the development of Marmota's Aurora Tank gold project and the treatment of Aurora Tank gold ore through the Challenger plant. Marmota is exploring different avenues to bring Aurora Tank into production. On 30 October 2017, Marmota reported the first metallurgical test work from Aurora Tank returned 94 to 97% gold recoveries.

Aurora Tank is located just 50 km NE of WPG's Challenger plant. Under the non-binding MoU, the parties will investigate ways for the processing of Aurora Tank gold ore at Challenger, whether by toll treatment, joint venture, profit sharing or other arrangements that they may agree.