American Tungsten & Antimony (ASX:AT4) restarted a campaign to produce antimony flake at the Del Sol refinery in Nevada using material from the White Spar mine in Arizona, according to a Wednesday filing with the Australian bourse.
The campaign is being carried out in cooperation with Nexus Metals, pending completion of the acquisition disclosed in July, the filing said.
Meanwhile, tungsten test work is in progress at the refinery, including on samples collected from Dutch Mountain, Tennessee Mountain and third-party sources, per the filing.
American Tungsten & Antimony shares rose nearly 4% in midday trade Wednesday.