Sigma Lithium Reports Dust Levels 560% Below Standards and Full Noise Compliance
SGML•Sigma Lithium's external experts measured dust at 350%-560% below CONAMA limits and conducted 95 noise campaigns confirming ABNT compliance, plus minimal vibration readings under seismograph thresholds over 12 months to May 2026. The data directly refutes unproven local court claims and underscores its spotless environmental track record.
1. Environmental Performance Data
Over the 12 months to May 2026, external experts monitored airborne particulate matter and found Sigma Lithium’s operations achieved dust levels 350% to 560% below CONAMA standard limits, particle sizes under 2.5 µm well within thresholds, 95 separate noise measurement campaigns confirming ABNT decibel compliance, and vibration readings so low they barely registered against legal limits.
2. Legal Dispute Refutation
This comprehensive data filing directly rebuts unproven claims lodged in state courts of Minas Gerais, providing objective, third-party evidence that noise, dust and vibration emissions at the Grota do Cirilo site meet or exceed all Brazilian regulatory benchmarks and technical standards, strengthening the company’s legal position.
3. Community and Social Impact
Sigma Lithium’s operation supports approximately 19,000 jobs and benefits around 80,000 people in one of Brazil’s most economically challenged regions, with transparent reporting reinforcing its commitment to socially responsible mining and bolstering community trust.
4. Operational and Sustainability Highlights
The company runs one of the world’s largest lithium oxide concentrate complexes, has operated accident-free for over two years, recycles 100% of its water, uses zero toxic chemicals and tailings, runs on 100% renewable electricity and has a 270,000-tonne annual nameplate capacity at Grota do Cirilo.
