Following the Group taking-over of all LafargeHolcim’s production installations located at CDH in April 2021, shortly followed by the acquisitions of the B-Mix and Casters businesses in Belgium, SigmaRoc created the Granulats du Hainaut aggregates brand and separated its European heavy-side materials operations into two separate platforms. CDH continued as a Europe wide dimension stone platform and a new, integrated, concrete and construction aggregates Benelux platform was created, including the GduH, Stone Holdings, B-Mix and Casters businesses.

The Benelux platform produces over 2 million tonnes of aggregates and over 250,000m³ of concrete, servicing the Hainaut, Liege and Limburg Market. Our aggregate products supply a range of partners and construction companies with products for concrete, sea defence work and riverbank fortification.

Carrières du Hainaut (CDH) is Europe’s largest quarry of Belgian blue limestone. CDH presently produces around 900,000 square metres of high quality Belgian Bluestone per year, a high-grade dimension stone produced exclusively in Belgium under European protected status. Belgian bluestone can be found in infrastructure and residential projects across the globe.

Our Bluestone platform is well positioned with reserves and resources of over 150 million tonnes of construction aggregates and over 28,000,000M³ of high quality Belgian Bluestone. The business employs over 420 people and has a proud history, dating back 130 years.

Due to its high quality and distinctive characteristics, Bluestone is a Global Heritage Resource and a sought after product that travels worldwide (unlike most aggregate products). Bluestone can be used in residential, commercial and infrastructure projects, as well as for architectural and cosmetic applications.