"Two Barminco employees working at MMG's Dugald River mine in Queensland were this morning involved in an incident and currently remain unaccounted for," the company said.
"The site's emergency response has been activated and is
working closely with Barminco and authorities to assist in
search and rescue efforts."
Queensland Ambulance said on social media that it had
deployed paramedics to respond to a "ground collapse" near
Dugald River.
State police were also at the scene, a spokesperson told
Reuters.
(Reporting by Melanie Burton and Lewis Jackson)
