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Open day at the Carrière d'Izernore quarry
On Saturday June 14, 2025, Carrières Blanc will welcome the general public to Izernore for an immersive day dedicated to discovering the CB Group's businesses, materials and environmental commitments.
TRB Réfractaires acquires MT Savage Specialty Refractories (USA)
TRB Réfractaires acquires MT Savage Specialty Refractories (United States), strengthening its presence in North America and consolidating its refractory offering worldwide.
8 TRB Refractory employees honoured for their new certification
On February 28, 2025, eight TRB employees obtained their certification as installation and automated machine operators. Supported by Transition Pro Hauts-de-France, this initiative illustrates the CB Group's commitment to training and skills development.
Groupe CB celebrates 30 years of landscape planning
To mark the 30th anniversary of the Landscape Plan, Groupe CB has teamed up with the Parc Naturel Régional to introduce visitors to the Marquise quarry basin through exclusive tours and a variety of events. Plunge into the heart of the Carrières du Boulonnais, France's largest open-cast quarry on a single site, and explore the PRIMA Architectural Park, where art and industry meet through never-before-seen works of micro-architecture.
CB Group announces acquisition of COSYLVA
Groupe CB, an independent family business specializing in the transformation of materials for the construction and industrial sectors, is pleased to announce the acquisition of COSYLVA.
Partnership between TRB Réfractaires and PA Technologies
In June, TRB Réfractaires and PA Technologies formalized a strategic partnership to innovate in refractory materials and industrial coatings.
From PRIMA Park to the Louvre-Lens Museum : A shared itinerary
In December 2023, a mutual interest in promoting cultural heritage led representatives of the Musée du Louvre-Lens, Florence Ravail and Arnaud Debève (members of the Communications, Development and Events Department) to explore the PRIMA Park.
Carrières du Boulonnais: A pleasant surprise for the "Chemins des Ducs" project!
At the Carrières du Boulonnais site in Ferques, a specific search was carried out using a drone equipped with a thermal camera.
The Groupe CB safety tour: The sécuritour!
Every year, all employees have the opportunity to take part in the Sécuritour! Entertainment, tailor-made workshops and a good time are all part of the program.
TRB launches its PUREBLOX 1400!
At METEC2023, TRB presents PUREBLOX1400, an innovation in insulating refractory materials resistant up to 1400°C.
Brittany's granite boulders tour the world
The quarry of the Société d'Exploitation des Carrières de Lanhélin (SOCAL) is a major economic player in the commune of Mesnil Roc'h. Take a guided tour of what lies behind the site.
A piece of limestone from Les Carrières du Boulonnais is set to land on Mars
Article La Voix du Nord - On July 30, 2020, NASA's Mars 2020 space mission took on board a sample of limestone extracted from Les Carrières du Boulonnais.
TRB, 70 years of concrete and fire
Article Semaine dans le Boulonnais - Who said that behind the walls of this quiet Boulonnais factory lies a company that works with the whole world?
120 years of Groupe CB, a family business
Article Mines et Carrières - The Groupe CB, which includes Carrières du Boulonnais, celebrated its 120th anniversary at the Ferques quarry (62), with a day reserved for partners on September 2, and the following day for local residents to discover this exceptional site.