top of page

CEMENT. STEEL.
CRITICAL MINERALS.
ALL FROM ONE ROCK. 

The world's most-used materials—made from one breakthrough process.

Our technology co-produces cement, steel, aluminum, magnesium, titanium, and other critical minerals from a single, globally abundant rock.

BRIMSTONE IS TRANSFORMING
HEAVY INDUSTRY. 

01

Low Cost

Brimstone’s strategy unlocks multiple high-value materials from a single rock, streamlining operations and improving capital efficiency. This model will allow us to sell products at competitive market prices, enabling expansion and exports.

02

Market Ready

We produce standard materials—including cement, steel, aluminum, and critical minerals—designed to integrate into supply chains. Our first process leverages commercially available equipment, reducing risk and accelerating deployment.

03

Highly Efficient

Our patented co-production technology lowers costs, simplifies logistics, and dramatically reduces waste and emissions. The Brimstone process seeks to utilize 100% of our feed rock, eliminating tailings and maximizing efficiency.

4636192.jpg
Rock Refinery® will produce commodities accounting for more than 95% of all mined materials on Earth, reshaping global supply chains, unlocking material abundance, and improving national security.

Brimstone goes public as ‘fourth great refinery’: roadmap includes cement, aluminum, steel, and other critical minerals

Latest news

BRIMSTONE ROCK REFINERY

®

Our first plant will leverage the proven industrial strategy of co-production to deliver cement, supplementary cementitious materials (SCM), and alumina—deriving three high-value products from domestically sourced rocks. Future plants will use these same rocks to also produce aluminum, steel, magnesium, titanium, and additional products.
Rock Diagram 4x.png

DIVE DEEPER

Brimstone-Finals-8843.jpg

We're engineering a first-of-a-kind solution for one of the planet's biggest problems, and we’re hiring an all-star team to join us.

2025-Brimstone_Future-Plant_WEB-RES (1) (1).jpg

Brimstone is building the fourth great refinery. Read how we're redefining the economics and scale of the world’s most important materials.

Brimstone-Finals-0130.jpg

Want to build the future with us? We're partnering with developers, corporations, and innovators to transform heavy industry. 

AS FEATURED IN

Media
NETFLIX

Brimstone is featured on the new series, 'What's next? The Future with Bill Gates.'

News
AXIOS

After successful testing, Amazon to buy low-carbon cement from Brimstone's first plant.

News
THE WASHINGTON POST

Cement warms the planet. This green version just got a key nod of approval.

CEMENT.STEEL.
CRITICAL MINERALS.
ALL FROM ONE ROCK. 

Our technology co-produces cement, steel, aluminum, magnesium, titanium, and other critical minerals from a single, globally abundant rock.

Economical. Efficient. Sustainable.

BRIMSTONE IS TRANSFORMING HEAVY INDUSTRY. 

Rock mobile diagram.jpg
4636192.jpg

Latest news

Brimstone goes public as ‘fourth great refinery’

Rock Refinery® product roadmap to include cement, aluminum, steel, titanium, magnesium, and other critical minerals
bottom of page