AngloGold Ashanti Begins Operating Normet SmartDrive Battery Electric Concrete Mixer at Cuiabá Gold Mine

Why It Matters

Zero‑emission underground equipment cuts ventilation costs and boosts worker safety, positioning AngloGold as a sustainability leader in the gold mining sector.

Key Takeaways

• First battery‑electric concrete mixer deployed in Brazil's underground mines
• Eliminates diesel emissions, improving underground air quality and safety
• Fast‑charging Li‑ion batteries enable 20 km/h operation with energy recuperation
• Potential to lower work‑front temperatures by up to 4 °C
• Supports AngloGold’s 273,000 oz 2025 gold output with greener infrastructure

Pulse Analysis

Underground mining operations are accelerating the shift toward electric equipment as part of a broader sustainability agenda, and AngloGold Ashanti’s recent rollout of a Normet SmartDrive battery‑electric concrete mixer at its Cuiabá mine marks a milestone for Brazil. The Utimec LF 600 Transmixer SD is the first of its kind to run underground in the country, replacing diesel‑powered mixers that traditionally spew exhaust gases in confined shafts. By eliminating local emissions, the machine directly improves ventilation requirements, reduces heat buildup, and aligns the mine with tighter environmental regulations and corporate ESG targets.

The mixer’s design centers on a high‑capacity 5.6 m³ drum, two high‑torque direct‑drive electric motors and a Li‑ion battery pack that charges via a CCS‑compatible fast‑charging interface. With a top speed of 20 km/h and four‑wheel drive, it can navigate the narrow, uneven tunnels typical of gold extraction. Energy‑recuperation during downhill travel and deceleration feeds power back into the battery, extending operating time and cutting electricity costs. Noise levels drop markedly compared with diesel units, and the electric drivetrain delivers instant torque, facilitating smoother concrete placement at heights up to 1.9 m.

Beyond immediate operational gains, the deployment signals a growing appetite for zero‑emission machinery in the mining sector. AngloGold’s Cuiabá complex, which produced roughly 273,000 oz of gold in 2025, stands to benefit from lower ventilation expenses and a smaller carbon footprint, enhancing its competitive position. As other miners observe the 18‑month test period, the technology could become a benchmark for underground electrification, prompting equipment manufacturers to expand electric line‑ups. In the long run, widespread adoption may reshape capital allocation, favoring investments in battery infrastructure and renewable power sources.