Les Carrières de l’Ouest in Voutré is renewing key production equipment, making it more ecological

It is an investment over 30 years, “something structuring for the career” for its president Thomas Dupuy d’Angeac. Les Carrières de l’Ouest inaugurated a new facility, a primary substation. It’s a key building in the production of aggregates, rock fragments, which crushes the rock extracted from the quarry. But this new building was mainly installed in the heart of the deposit whereas previously it was more than a kilometer from the site. “We moved it to save transport costs in relation to the energy problem that this represents for the supply of this installation”explains Thomas Dupuy

An ecological investment

The first hard rock quarry in France is also investing in this building to reduce its carbon borrow : “40,000 tons of CO2 over the operating life, around thirty years, which is significant”adds the president of the company.

The machines of the quarry are presented to the public who come to discover the new equipment of the Carrières de l’Ouest. © Radio France
Julien Provoyeur

Another investment in favor of the environment, the modification of the transport of finished products. 30% of traffic by train leaves for the Paris region. “We have set up a rail shuttle between Voutré and Trappes which, instead of using classic aggregate wagons, transports in containers and therefore allows us to receive soil and transport soil on the way back. We have an obligation to backfill the quarry as we go along and therefore we have to bring back 350,000 tonnes per year. It’s an innovation, it didn’t exist and it allows us to limit our impact on the environment”, smiles Thomas Dupuy from Angeac.

The double freight container makes it possible to transport the aggregates and return with earth from Parisian construction sites to backfill the quarry.
The double freight container makes it possible to transport the aggregates and return with earth from Parisian construction sites to backfill the quarry. © Radio France
Julien Provoyeur

Each year, the company transports 1.5 million tonnes of aggregatesthese rock fragments, by trainwhich corresponds to 3.5% of French production.


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