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Codelco and Anglo seek two environmental approvals for a shared Chile copper mine

Documents seen by show that Chilean copper producer Codelco, and global miner Anglo American, plan to submit different environmental studies to the regulators in Chile for their planned "shared copper mine". They will use what they call a "unprecedented", twin-track approval process.

Documents previously unknown on the Andina Los Bronces project were presented to environmental authorities in January. They show that the companies intend to submit two applications essentially identical in December for a 'pit' where they will jointly extract copper from the top producer of red metal in the world.

This model could be used as a template for other large miners who want to share their infrastructure and operations in order to increase output during an anticipated global supply shortage. It would also allow Codelco and Anglo American move more quickly and reduce risks.

Codelco and Anglo completed the deal in September. They plan to add 120,000 metric tonnes of copper each year?from 2030-2051, generating a minimum $5 billion in value before tax.

Codelco Chairman Maximo Pacheco and a source from Anglo American confirmed that the companies plan to submit the two applications by the end of this year.

"MIRROR" APPLICATIONS

The companies propose that in areas where mining operations overlap, they apply the same environmental measures to all miners.

One presentation demonstrated that a single filing would not be legal because the Chilean constitution requires Codelco retain ownership of their mining concessions.

The companies considered submitting?three requests: one for each miner, to extend the life of their mines and a third application from a joint entity that would manage the shared operation.

The decision was made because the companies would have to surrender their open-pit permits in order to allow the mine to be combined.

This dual structure will also allow mines to return to independent operation in the future.

Work on the Ground

The documents detailed plans for creating a single pit on top of the existing pits.

Anglo American’s Los Bronces pit and Codelco’s Andina are adjacent. The companies’ plan shows that the rock barrier in between would be mined as well, creating a single pit, while maintaining a project largely within existing mine footprint.

One document stated that the ore from the pit shared by both companies would be interchangeably sent to their respective processing plants. The waste rock, meanwhile, would be dumped in the waste dumps of each company.

The two mines would still need to make changes?to waste dumping, tailings facility, pipelines, and support infrastructure in order to run as an integrated system.

The companies claimed that sharing infrastructure would reduce the pressure on the area and cut down the use of freshwater.

Share a Mine: What are the Risks?

Companies also highlighted significant risks such as the necessity for "close coordination" with regulators which could strain Chilean environmental review system, already slow.

The two reviews emphasized the project's "high visibility" and the risk that environmentalists or affected communities might argue that the two reviews do not accurately reflect the impact.

Residents, regulators, and courts have been scrutinizing Los Bronces for years over alleged impacts on water usage, air quality and 'glaciers' in the high Andes, where the mine is located.

While both?Codelco & Anglo claim that the dual-track strategy would reduce the risk underestimating environmental impacts, they acknowledge it could lead duplicate or unnecessary environmental measures.

One document revealed that the firms will begin outreach to local community and other stakeholders during the second half year. Reporting by Kylie Madry & Fabian Cambero. Daina Beth Sola and Mark Potter edited the report.

(source: Reuters)