American Tungsten & Antimony (ASX:AT4) produced its first antimony blocks from the Antimony Canyon project in Utah, according to a Thursday filing with the Australian bourse.
The production was part of a proof-of-concept metallurgical test work carried out to support project evaluation, the filing said.
The company is pursuing a potential Nasdaq listing in the second quarter of the year as part of its US growth strategy, per the filing.
Shares fell 7% in afternoon trade on Thursday.