Maritana Minerals' (ASX:MRT) front-end engineering design (FEED) study increased nameplate throughput at its Black Swan Processing Hub project in Western Australia to 2.5 million tonnes per year from 2.2 million tonnes, according to a Tuesday filing with the Australian bourse.
The capital cost implications of the increase are being reviewed as part of the ongoing FEED process, the filing said.
Construction is expected to start in the middle of the year, per the filing.
Shares fell past 5% in midday trade Tuesday and earlier hit their lowest since December 2024.