HOYT LAKES - Of the bad things that could happen once PolyMet starts running Minnesota's first-ever copper mine, critics say, among the worst would be a catastrophic breach of the tailings basin dam.

Tetra Tech is a leader in developing solutions to support the operational safety of geotechnical and natural structures. On a global scale, tailings dam breaches are increasing in frequency, causing ...

The agreement spans full lifecycle services to treat, extract, and transport tailings material away from the dam structure.

BEIJING (Reuters) - China has tightened rules covering the safety management of tailings dams, including banning them in some areas, authorities said on Thursday, as the country aims to prevent risks ...

STRACON Group Holding Inc. (TSX: STG) (together with its subsidiaries “STRACON” or the “Company”), a leading provider of ...

Neighbors of an iron ore mine belonging to Brazilian miner Vale SA were evacuated on Friday in southeastern Minas Gerais state, when a tailings dam ruptured, pouring out mud into the surrounding area, ...

South African authorities shut down the Jagersfontein diamond tailings dam in 2020 due to high water levels before allowing it to reopen last year, a company official said on Monday, a day after the ...

The company said it hadn't abandoned earlier plans, the focus of a Minnesota DNR review on whether the mining permit should be denied. Plans for the NorthMet project include building dams to increase ...

Miner Boliden said on Monday it would spend 5 billion Swedish crowns ($530 million) over the next two years on works on the tailings dam at its Aitik copper mine in northern Sweden. Adds detail, ...