Metals miner Mandalay Resources Corp (TSE:MND) is continuing the search for two missing miners after a flood at the Delia NW mine at Cerro Bayo in Chile on June 9.
The efforts are focused on drilling to around 200 metres below surface (where the miners were working), to test the extent to which inundation of that level has occurred.
Meanwhile, all surface and underground haul trucks on site are engaged with several excavators and loaders in constructing a containment berm across a bay of Laguna Verde in an attempt to isolate the zone from the larger lake and manage possible further water inflows.
Dr Mark Sander said Mandalay was doing everything possible to locate the pair.
"The presence of water and disturbed material makes this effort extremely complicated," he said.
"We will continue to deploy our own resources, as well as the resources coming from suppliers, contractors, other mining companies and government, while taking extraordinary care to proceed safely during these unprecedented efforts.
"We are working diligently to keep the families, employees, local community and the wider Chilean population informed of our efforts in a timely way."