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Jervois Global, which dug the mine into the side of a nearly 8,000-foot (2,400-metre) mountain, watched helplessly last year as cobalt prices plunged after China's CMOC Group opened the Kisanfu mine in the Democratic Republic of Congo, pushing global production of the metal to an all-time high.

The Idaho site, which Jervois bought in 2019, was idled in June 2023 just weeks before it was set to open. More than 250 workers lost their jobs. A skeleton crew now rotates unused rock crushing equipment weekly to keep it from flattening under its own weight.

"We were straightforward with our staff and told them: 'This is all about the price of cobalt,'" site manager Matthew Lengerich told Reuters during a visit to the facility. Jervois says cobalt prices need to reach at least $20 per pound for the site to open. But prices sat near $12.17 in July.

A similar quandary faces BHP, Albemarle and other Western mining companies trying to compete with metals produced by Chinese-linked companies, some of which use coal-generated electricity, child labor or other practices not meeting the standards set by many governments and manufacturers.

Western miners say their competitors have inherent cost advantages that enable rapid production expansions even as prices for cobalt, lithium and nickel have plunged more than a third in the past 18 months. Operational costs for many of these Western companies have, as a result, been exceeding what market prices will cover.

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