Sigma SW

GD Harries (GDH)

GDH is the cornerstone for SigmaRoc's SW platform. With a 40% stake (and ability to purchase the remainder by mid 2020) it allows SigmaRoc to have a significant footprint in the region.

GDH is one of Wales’s largest independent suppliers of aggregates – based in West Wales, it operates out of six granite and limestone quarries – incorporating three asphalt plants. six concrete plants, and a wharf operation, as well as a civil engineering division delivering significant infrastructure projects.

The business was founded by Mr. Gerald D. Harries and built into the foremost independent regional supplier by his son Ian Harries, who is currently its chairman.

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Foelfach Quarry

Foelfach Stone, based in Carmarthen Wales, is a volume producer of crushed aggregates, bulk screen fills, natural stone and rock boulders to both public and private sectors. 

Progressive stages of crushing and screening enable us to produce a range of aggregate sizes. 

One of Wales highest quality aggregate reserves, with a polished stone value of 65 (only 9% of quarries in the UK are able to produce such stone).