Metallium (ASX:MTM) said dry and wet commissioning was underway across core systems at its Texas Technology Campus after completing the first integrated chlorine flash using the flash joule heating technology in the December 2025 quarter, according to a Thursday Australian bourse filing.

The company also started work to establish the operating frameworks required for a tier-1 style industrial facility at the campus, including the development of operating procedures, safety and environmental systems, as well as workforce training frameworks, the filing said.

Metallium's shares fell nearly 12% in recent trading on Thursday.