Shares in South32 Ltd (LSE:S32, ASX:S32, OTC:SHTLF, JSE:S32) fell after the mining giant said work at a northern Australian mine remains on pause due to tropical cyclone Megan.
Guidance was being withdrawn for its Australia Manganese division, it said.
Operations at Groote Eylandt have seen flooding in mine pits, "significant" damage to a critical haul road bridge, as well as wharf and port infrastructure was confirmed in initial assessments.
A separate local report indicated there were low levels of fuel on the island after a pipeline broke, leaking thousands of litres of diesel into the ocean.
"Further assessment of the full impact of the damage is ongoing and will inform recovery plans, with a view to returning to safe operations as soon possible. Alternative shipping arrangements are also being evaluated," South32 said.
As the impact of the weather tailed off on the island, whose name means 'large island' in Dutch, the company has been able to assess the impact on infrastructure.
The mine supplies 10-15% of the world’s manganese, worth $1.53 billion to the company in 2023.
The shares fell 3.8% to 152p on Wednesday morning in London.