Why the Americas
At Stone Three, we’ve spent over two decades partnering with global mining leaders to deliver measurable productivity, efficiency, and safety gains through AI-powered solutions. As our footprint and customer base grew across North, Central, and South America, it became clear: proximity matters.
That’s why we established Stone Three Inc. in Chicago, Illinois — a central and connected hub that enables us to better serve our clients across the Americas with greater speed, flexibility, and on-the-ground expertise.
From copper operations in Chile and Peru to lithium mines in the U.S. and gold sites in Canada and Mexico, the Americas represent some of the most innovative and production-intensive mining operations in the world. These sites face immense pressure to improve sustainability, increase throughput, and unlock greater value from their assets — all while minimizing environmental and operational risk.
Stone Three Inc. was created to meet those challenges head-on, offering:
- Local support from a dedicated U.S.-based team
- Faster deployment and integration of our sensor, APC, and remote expert solutions.
- Stronger partnerships through in-region collaboration and site visits.
- Strategic alignment with leading mining hubs and technology partners.
Our mission is to help mines across the Americas harness the full power of real-time data and industrial AI — transforming insights into action and operations into performance powerhouses.
The Future of Work. Now TM
What We Do
At Stone Three Inc., we help mines unlock the full potential of their plant data through intelligent digital solutions. Our focus is on solving critical bottlenecks and inefficiencies in two of the most energy-intensive and value-critical areas of mineral processing: comminution and flotation.
We call it Comminution Optimization and Flotation Optimization — data-driven optimization that delivers measurable impact where it matters most.
Comminution Optimization
Maximize throughput, stabilize energy use, and extend liner life.
Our Comminution Optimization solutions combine cutting-edge sensors, AI-driven Advanced Process Control (APC), and real-time decision support to optimize the entire milling circuit — from the primary crusher to the ball mill.
By integrating image-based sensor data, feed-forward control, and expert advisory services, we help clients achieve:
- Higher crusher/mill throughput with lower variability.
- Reduced overgrinding and improved recovery downstream.
- Longer asset life through better operating envelopes.
This is proven comminution intelligence — from coarse particle liberation to fine particle control.
Flotation Optimization
Stabilize & Improve recovery, reduce reagent use, and improve concentrate quality.
Flotation circuits are dynamic and complex — and often under-instrumented. Our Flotation Optimization platform provides operators with real-time visibility into the pulp phase using our patented in-situ sensor technology, coupled with AI models that continuously optimize air and froth flow across the circuit.
We support your flotation plant with:
- Real-time froth/pulp phase measurement for consistent air dispersion.
- Adaptive APC algorithms that reduce operator variability.
- Remote support and diagnostic capabilities leveraging the Stone Three SmartROC.
The Result? More stable operation, higher recovery, and less guesswork.
Together, Comminution Optimization and Flotation Optimization form the backbone of a future-proof plant.
Where We Operate
Stone Three Inc. is proudly headquartered in Naperville, Illinois, part of the greater Chicago area — a strategic location that positions us at the heart of North America’s industrial and mining landscape.
From this central hub, we actively support mining operations across the Americas, including:
- North America
- Central America
- South America
With active deployments and client engagements across a wide range of commodities including copper, gold, lithium, coal, iron ore, and PGMs, Stone Three Inc. delivers tailored solutions that adapt to the unique challenges of each operation, ensuring productivity outcomes that meet and exceed expectations.
Backed by our global engineering team and remote expert network, we ensure every site across the Americas has access to world-class digital expertise, local responsiveness, and measurable operational outcomes.
Wherever you operate, we’re there — Smarter, Faster, Closer.