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Mining companies rarely make news for paperwork, yet a document signed in Brazil has just allowed one of the Americas’ largest lithium producers to switch its operations back on. Sigma Lithium Corporation (NASDAQ: SGML, TSXV: SGML, BVMF: S2GM34) said that its mine and processing plant in the state of Minas Gerais were fully running again, ending a partial suspension that had slowed part of its business for several weeks.
The trigger was a settlement known locally as a TAC, short for Termo de Ajuste de Conduta, or terms for adjustment of procedures. In plain language, it is a written agreement between a company and Brazilian regulators that spells out exactly what the company will do and by when. Most publicly traded companies in Brazil hold one or more of these arrangements with federal or state bodies, and they are a common way to close out environmental or corporate questions without a drawn out legal fight.
For Sigma Lithium, the agreement resolves a notification issued earlier in the summer by the environmental authority for the Vale do Jequitinhonha region. That notice carried fines of roughly $540,000 tied to environmental matters dating from 2013 to 2022, and it forced the company to pause part of its activity while talks were under way. The plant that reprocesses older mining tailings into high-purity lithium fines kept running throughout, so the business was never fully offline.
Under the terms now signed, Sigma Lithium expects to spend about $1,000,000 on adjustments to its environmental procedures, on top of the fines of up to $540,000. The company has been firm that it did nothing wrong. It says it has not misstated information filed with regulators since 2018, has not sold lithium commercially before May 2023, and disputes a claim that two houses outside its licensed area were harmed. Even so, it agreed to widen and gravel the access roads near those homes.
With the mine open again, attention returns to output. The company has repeated the goals it set out in its second-quarter update: 240,000 tonnes of lithium oxide concentrate over the coming twelve months, and 330,000 tonnes across the 2027 financial year. Longer term, a Phase 2 project aims to almost double yearly capacity to 580,000 tonnes, with a later Phase 3 stretching toward 830,000 tonnes. Whether lithium prices cooperate is another matter, since the metal has been through a volatile stretch.
To move more rock, Sigma Lithium is also upgrading the trucks and diggers that haul ore across the site. Working with its equipment supplier, Sany Heavy Industry Co., Ltd. (SSE: 600031), the Chinese machinery maker behind the SANY brand, it plans to bring in 75 tonne trucks and 98 tonne excavators. Bigger machines mean fewer trips and, in theory, a lower cost per tonne as the operation scales up.
There is a human backdrop to all of this. The operation sits in one of the poorest parts of Minas Gerais, where the company says it has created around 19,000 jobs that support roughly 80,000 people. That local weight helps explain why a workable agreement with the state mattered to both sides. Sigma Lithium markets its site as unusually clean, pointing to full water reuse, no toxic chemicals and renewable power, a pitch it calls Quintuple Zero.
The episode is a useful reminder that a mine’s biggest risks are not always underground. Permits, local relationships and regulatory sign-off can matter as much as ore grades. With the paperwork settled and the machines running, Sigma Lithium now faces the more familiar test of hitting its numbers.
