Industrial Tourism 2nd Edition: Behind the scenes at France's largest open-pit quarry

From April to October 2026, embark on a guided bus tour of the Ferques site. During the tour, immerse yourself in the history of the site, discover how aggregates are processed, learn about the expertise of our teams, and find out about our commitments to protecting the environment.

A unique experience that will change the way you look at the impressive industrial heritage at the heart of our daily lives.

Find more information via the booking link and on our social media channels.

Dive into the heart of the Boulonnais quarries in Ferques

CB Group Aggregates, a division of CB Group - Find out more

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Website carbon

Industrial tourism
Industrial 

What if the Boulonnais Quarries became your fondest vacation memory? 

Dive into the heart of the Boulonnais quarries in Ferques

Together,
committed
for
tomorrow

Extracting and processing high-quality natural and recycled aggregates in a sustainable and responsible manner.

Who are we?


Industrial expertise and know-how

Offering a complete range of natural and recycled aggregates that meet the highest standards.

Our product range


's excellenceat the service of
all our markets

Ensuring quality, responsiveness, flexibility, and adherence to deadlines for every project.

Our references


ctor inthe decarbonized economy

Promoting innovative, low-carbon logistics solutions to limit our impact on the environment.

Our responsible commitments

Our products

Our rangeof products

A comprehensive range of natural and recycled aggregates, capable of adapting to all markets.

With reserves lasting more than 100 years, our high-quality natural physical and chemical deposits guarantee regular and sustainable supplies in significant volumes. Our on-site laboratories enable us to adapt the formulation of our materials to each customer's specifications or to create new materials. From the finest sand to the largest riprap, discover the materials suited to your field of activity, accompanied by our innovative logistics solutions.

Gravel
Sand
Riprap and boulders
Pierre
Anything that comes along
Untreated grave
Treated materials
Recycled materials
Learn more

Areas of application

Agriculture
Landscaping and decorative features
Anti-intrusion
Construction, protection
of riverbanks and levees
Asphalt mixes
Concrete industries
Masonry/Structural work
Industrial Processes
Roads, highways, various networks
Maritime and offshore works
Railway uses
Sports uses
Learn more


's areas ofapplication

Innovative solutions for industry, construction, public works, and onshore and offshore operations.

For nearly 130 years, our expertise, backed by our centuries-old industrial know-how , has enabled us to offer a high-quality, tailor-made service that is perfectly adapted to the specificities of each market, both in France and internationally.

Our comprehensive range of aggregates, from the finest sand to riprap, covers all areas of application in industry, construction, civil engineering, and onshore/offshore works.

Dedicated support for the performance of each project in France and internationally.

Our solutions

Our website consumes less energy.

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This site has been designed to limit CO2 emissions and its impact on the planet.

Discover our approach

locations

Map

Carrières du Boulonnais
2 rue Louis Le Sénéchal,
62250 FERQUES

agence-littoral@groupecb.com

Discover our locations

Activities:


quarry operation +33 (0)3 21 99 19 49
Distribution site,
Hauts-de-France sales agency
Construction and public works waste recycling platform
03 21 99 19 37

La Belonga Quarries (Spain)

Activity: Quarry operation

Cellagu, 33193 OVIEDO
ASTURIAS, SPAIN
Tel: +33 (0)6.80.68.97.50

agenceinex@groupecb.com

Discover the location

Hainaut aggregates

Activity: Quarry operation

Rue de Cognebeau
7060 Soignies, BELGIUM
Tel: +33 (0)6.80.68.97.50

agenceinex@groupecb.com

Discover the location

Sambre Basin Quarries (CBS)

Activity: Quarry operation / Marketing

Route de St Remy du Nord
59330 LIMONT-FONTAINE
Tel: +33 (0)3.27.66.33.11

agence-est@groupecb.com

Trailside

Activity: Construction and demolition waste recycling unit
and blast furnace slag
Sales agency

293 Route du Fossé Défensif
59430 DUNKERQUE

Tel:+1 (0)3.59.61.40.82

CB Group Aggregates

Activity: Administrative headquarters

EUROCAP Business Park
Rue du Cap Blanc Nez
62231 COQUELLES

Tel:+1 (0)3.21.99.19.49

Carrières du Boulonnais
Limay
Port de Limay – Avenue Daniel Dreyfus Ducas
78520 LIMAY

Activity:
Multimodal aggregate distribution platform

Tel:+1 345-2451-30

Carrières du Boulonnais
Mitry Mory
Rue Decauville,
77290 MITRY MORY

Activity:

multimodal aggregate distribution platform Construction and public works excavation recycling platform

Tel:+33 (0)1.64.27.72.35 ( operations)
+33 (0)1.34.24.51.30 ( administration)

Carrières du Boulonnais
Rieux
784 Rue Frédéric Kuhlman,
60870 RIEUX

Activity:

multimodal aggregate distribution platform Construction and public works excavation recycling platform

Tel: +1 345-2451-30 

Carrières du Boulonnais
Émerainville
11 allée Briarde
77184 ÉMERAINVILLE

Activity:
Multimodal aggregate distribution platform

Tel: +1 345-2451-30

Carrières Blanc
Izernore

420 route du Champs Biolay
ZA de la Paline
01580 IZERNORE

Activity:
Quarry operation / Distribution
Site for recycling excavated material for quarry backfilling

Tel: +1 (0)4.74.76.96.44

Carrières Blanc

Hauteville
 Zone artisanale de la Cornella
01110 HAUTEVILLE

Champdor
900 Route du pommier
01110 CHAMPDOR

Activity:
Quarry operation / Distribution
Site for recycling excavated material for quarry backfilling

Tel: +1 (0)4.74.76.96.44

Isère Nord Granulats
Porcieu-Amblagnieu quarry

La Loimpe
38390 PORCIEU-AMBLAGNIEU

Activity:
Quarry operation / Distribution

Tel: +1 (0)4.74.76.96.44

Cusy Quarry

440 Route des Rapillets
74540 CUSY

Activity:

Quarry operation
Reclamation of inert land
Marketing

Tel: +1 (0)4.50.52.53.03

Port of Saint Malo, 35400

Tel: +1 (0)6.80.68.97.50

Port of Brest, 29200

Tel: +1 (0)6.80.68.97.50

Ports of Aquitaine, 30072

Tel: +1 (0)6.80.68.97.50

Ports of Boulogne, Calais, Dunkirk
62100 CALAIS

Tel: +1 (0)6.80.68.97.50

In France and Europe,
as close as possible
to the markets.

Our production and distribution sites are strategically located to provide optimal coverage of the domestic and European markets and complementarity between regions.

This proximity to your sites guarantees responsiveness, increased flexibility, and strict adherence to deadlines. Our dynamism drives us to invest in new geographical areas, keeping us close to market developments in France and internationally.

Our locations and activities

France

Boulonnais quarries

Sambre Basin Quarries (CBS)

Trailside

White Careers

Northern Isère Aggregates/Porcieu Quarry

Cusy Quarry

Seaports

Europe

Les Granulats du Hainaut (Belgium)

La Belonga Quarries (Spain)

10 million

tons of aggregates produced

9


, including 2 international positions

6

logistics platforms

14

circular economy platforms

1


rail terminal

5

Quality laboratories

Discover our project references

Working closely with our clients and their businesses, our teams contribute their know-how and expertise, which are essential to the success of all projects in France and internationally.

Our references

Our news

Published on March 16, 2026

The CB Group's Ferques Aggregates site has obtained ISO 50001 certification 

Certified! The CB Group’s Ferques des Granulats site has just earned ISO 50001 certification, an international recognition that highlights the implementation of an effective and sustainable energy management system.

Read more

Published on March 11, 2026

Industrial tourism 2026: see you in April for a new season of tours at the Ferques quarry!

Hop on the bus and discover France's largest open-pit quarry! A spectacular industrial tourism experience, combining mineral landscapes, local expertise, and preserved biodiversity.

Read more

Published on March 3, 2026

Prefectural visit to the heart of the CB Group

The CB Group was delighted to welcome Bertrand Gaume, Prefect of the Hauts-de-France region, to its headquarters in Leulinghen-Bernes, accompanied by representatives from the Hauts-de-France Regional Directorate for Environment, Development and Housing (DREAL) and the Pas-de-Calais sub-prefecture. This meeting was followed by an immersion in the Ferques Quarry, the largest open-pit quarry in France and a truly iconic site in the region.

Read more

Our news

A look at our actions