Australian base metals miner Caeneus Minerals is set to expand its US-based lithium portfolio through the acquisition of 100% interest in Perth-based ATC Resources’ Sarcobatus Flats and Columbus Marsh exploration projects, in Nevada, in the US. Caeneus reported on Tuesday that it would issue 100-million fully paid shares at $0.003 apiece and 100-million free attaching unlisted options exercisable at $0.005 apiece before June 30, 2021.