# Martin Marietta

> Martin Marietta processed 2.7 million tons of concrete in 2024 and sold more than 2.3 million tons as recycled material. Recycled aggregate is an operating lane, not a theoretical one.

- Industry: Building & Infrastructure
- Collection: Active
- Regions: North America
- Countries: United States
- Materials: Cement, Minerals, Steel
- Processes: Recycling
- Evidence through: 2026-09-18
- Canonical URL: https://www.materialtransition.com/library/martin-marietta

## Material inputs to resolve

Aggregates, cement and recycled construction materials

The company also reports California recycling facilities and recovered reinforcement steel. It does not identify an open feedstock contract, receiving specification or project buyer.

**2.7M tons** Concrete processed in 2024

**Open** Plant, grade and buyer evidence

**Screening** No commercial claim

**As of** September 18, 2026

- Demolition concrete
- Embedded reinforcement steel

### Outputs and residuals to resolve

- Crushed base, ballast and rip rap
- Recovered steel

**First decision:** Yard geography, gradation and buyer specification.

## What is disclosed

Martin Marietta reports 2024 concrete-processing and recycled-product volumes, including recovered reinforcement steel.

#### What remains unproven

The report does not establish a supplier agreement, price, project award or usable volume at one facility.

### Decision boundary

The public record supports one bounded next move: Yard geography, gradation and buyer specification. It does not establish a buyer, commercial approval or supply agreement.

## Material flow map

| Material or stream | Qualification gate | Process or destination | Evidence still needed |
|-|-|-|-|
| Demolition concrete | Composition and specification | Crushed base, ballast and rip rap | Site, volume and buyer evidence |
| Embedded reinforcement steel | Condition and logistics | Recovered steel | Yield and destination evidence |

This is a public screening map. It separates company-disclosed flows from open qualification work. It does not convert a destination into a buyer or an announced ambition into operating capacity.

## Three defensible entry lanes

#### Urban recycling

Prioritize a site where recycled aggregate avoids long haul from virgin reserves.

**Next evidence:** Yard geography, gradation and buyer specification.

#### Qualification path

Separate disclosed company activity from a usable commercial lane.

**Next evidence:** Named site, product grade and technical owner.

#### Commercial boundary

Do not infer customer demand from corporate reporting.

**Next evidence:** Buyer specification, commercial terms and approval.

## Evidence register

- **2024 Sustainability Report** Martin Marietta https://mcdn.martinmarietta.com/assets/sustainability/2024sustainabilityreport.pdf [1]
- **Sustainability hub** Martin Marietta https://www.martinmarietta.com/sustainability [2]
- **Recycled aggregates section** Martin Marietta https://mcdn.martinmarietta.com/assets/sustainability/flip/sustainability2024-b/files/basic-html/page59.html [3]
- **Sustainability Report 2025** Martin Marietta, official sustainability report https://mcdn.martinmarietta.com/assets/sustainability/2025sustainabilityreport.pdf [4]

Source hierarchy: filings and company disclosures first. The brief states what those sources support and leaves the unresolved plant, grade, permit, buyer and mass-balance questions explicit.

## Material Transition editorial interpretation

The next useful working session starts with: Yard geography, gradation and buyer specification.

## Sources

- [1] 2024 Sustainability Report - https://mcdn.martinmarietta.com/assets/sustainability/2024sustainabilityreport.pdf
- [2] Sustainability hub - https://www.martinmarietta.com/sustainability
- [3] Recycled aggregates section - https://mcdn.martinmarietta.com/assets/sustainability/flip/sustainability2024-b/files/basic-html/page59.html
- [4] Sustainability Report 2025 - https://mcdn.martinmarietta.com/assets/sustainability/2025sustainabilityreport.pdf

From the Material Transition company brief library: https://www.materialtransition.com/library/martin-marietta