Lynas Rare Earths expansion rejected by Malaysian regulators

• Malaysian authorities reportedly blocked a proposed refinery expansion by Lynas Rare Earths.
• The company's stock price fluctuated significantly before finishing higher during Monday trading.
• The processing increase was intended to lift lanthanide concentrate capacity to 110,000 tonnes annually.

The Malaysian Department of Environment reportedly blocked a plan by Lynas Rare Earths (ASX:LYC) to expand its lanthanide concentrate processing capacity from 95,000 to 110,000 tonnes per year at its Pahang refinery.

This regulatory rejection follows previous environmental opposition regarding radioactive and toxic remnants from the site, which processes rare earth elements extracted from the company's Mt Weld mine in Western Australia.

The company has not released an official executive statement regarding the weekend media reports from Malaysia.

The decision adds to previous regulatory hurdles for the facility, including a temporary 2023 processing ban that was later overturned and a required $250 million permanent disposal facility for radioactive residue.

The refinery operates as the largest rare earths processing hub outside of China and recently secured a 10-year operating licence renewal in March.

The operational challenge coincides with an upcoming leadership transition, as chief operating officer Pol Le Roux prepares to take over from long-serving CEO Amanda Lacaze on July 1.