UK: Hanson, part of Germany-based HeidelbergCement, has supplied basalt from its Builth Wells, Powys quarry to the world’s first CO₂ sequestration field trial in the Brecon Beacons. The trial uses local live soil enriched with basalt for enhanced CO₂ sequestration in a reforested 11ha woodland. Enhanced rock weathering takes crushed basalt, a by-product of quarrying, and applies it to the soil to capture CO₂ and provide essential nutrients to fertilise trees and the fungi in the soil that support tree growth. The building materials producer says it is a method that has been proven to be successful in sugar beet and pea crops.

Sustainability director Marian Garfield said, “Hanson is focussed on climate protection and carbon reduction, and enhancing biodiversity net gain are two of our key 2030 commitments.” She added, “We are excited to be involved with this project, which aims to determine whether basalt can accelerate the removal of CO₂ from the atmosphere in the creation of new woodland and could therefore potentially play a vital role in helping tackle the climate crisis.”