Our news.
A quarry, an open-air classroom
Welcome of L2 SVT students - Biology-Geology track of UFR SEN (URCA) at one of our sites in the pre-Ardennes ridges: reading of strata, lithological identification and observation of Lower Jurassic fossils.
15/05/2026
Our riprap blocks: two mineral identities
At MCA, not all materials go through the crusher. We keep the largest blocks to offer natural riprap: golden yellow stone from Douzy (Ardennes) and bright white stone from Vignory (Haute-Marne).
15/04/2026
News from Sassey-sur-Meuse
Our partnership with LPO Meuse translates into concrete actions at our former Sassey-sur-Meuse quarry.
22/10/2025
MCA has obtained the NF-GRANULATS certification
MCA has obtained the NF-GRANULATS certification issued by AFNOR Certification for its Warcq site.
03/10/2025
Recap of the Open Days of 19 and 20 September 2025
Recap of the UNICEM Grand Est Quarries and Materials Open Days at the Douzy quarry.
29/09/2025
Open Day on 20 September 2025
MCA invites you to discover the world of aggregate production at the Douzy quarry.
16/09/2025
Project near Laifour
Delivery of nearly 15,000 tonnes of unbound 0/300 for the project at lock no. 48 of the Dames de Meuse.
22/01/2025
Douzy Open Days
On 20 and 21 September 2024, the Douzy quarry opened its doors for the second consecutive year.
16/10/2024
High turnout for our Open Days
1050 visitors attended our Open Days at the MCA quarry in Douzy in partnership with UNICEM Grand Est: schools, elected officials, neighbours and curious visitors.
30/09/2024
The pre-Ardennes ridges spark the curiosity of geology students
Welcome of geology undergraduate students from the University of Reims at one of our quarries.
06/05/2024
Maintenance of our plots
Maintenance of former alluvial quarries classified as Natura 2000 zones, in partnership with the LPO.
06/02/2024
New ISO 9001, 14001 and 45001 certifications
MCA obtains ISO 9001, ISO 14001 and ISO 45001 certifications after initial audit. Three standards for quality, environment and occupational health and safety.
15/08/2023
2023 Open Day at the Douzy Quarry
High turnout for our Open Days at the Douzy Quarry, organised by UNICEM.
07/08/2023 Students visit us
25 L2 Life and Earth Sciences students from the University of Reims Champagne-Ardenne visited one of our Ardennes quarries to discover Jurassic limestone.
15/04/2023
Highland cattle in Sassey-sur-Meuse
End of 2022, Highland cattle join our former Sassey-sur-Meuse quarry for ecological maintenance and biodiversity preservation.
15/12/2022 Creation of an islet at Sassey-sur-Meuse
Funding the creation of an islet at Sassey-sur-Meuse to welcome common terns. Partnership with LPO Meuse for biodiversity.
01/09/2022
Pupils in the quarry
On 13 and 14 June 2022, the Albert Toussaint school of Stenay (Year 2 and Year 3) discovers the biodiversity of the Sassey quarry with the LPO and CPIE Meuse.
13/06/2022 New CAT 390F L hydraulic excavator
Arrival of a new 86-tonne CAT 390F L hydraulic excavator at the Douzy quarry. 405 kW engine, Stage IV standards, biodiesel-compatible.
15/07/2021
New FlexiROC D50 drill rig
Reception of a new FlexiROC D50 drill rig at the Douzy quarry. Holes from 90 to 130 mm up to 45 m deep, low-speed 287 kW engine.
15/06/2021 Humidification gantry at Douzy
New humidification gantry at the Douzy quarry. It moistens the load of outbound trucks to limit dispersion on the roads.
15/03/2021
Investments on lines 3 and 4 - Douzy
Complete refurbishment of production lines 3 and 4 at the Douzy quarry: new crusher, conveyors and vibration-damping supports.
15/01/2021 2 new CAT 772 dump trucks
The Douzy quarry receives two new Caterpillar 772 dump trucks with a loading capacity of 47 tonnes each.
15/12/2020
New feeder on the primary line
Refurbishment of the primary line at the Douzy quarry: new feeder and replacement of the disc screens.
15/01/2019