On July 2, 2025, teams from Bergerat RENT France, exclusive distributor for Caterpillar Inc, filmed ECT’s backfilling operations in the PLACO® underground gypsum quarry at Baillet-en-France. This site, both technical and remarkable in its scale, provides a magnificent backdrop to illustrate ECT’s expertise, the precision of its underground maneuvers and the power of its site machinery. The aim is to highlight the precision and expertise of ECT operators, who are able to operate in a confined, demanding environment thanks to the power and performance of Caterpillar machines. The day’s filming, orchestrated by CTL PRODUCTION, captured spectacular images of the machines

As part of its partnership with Placo Saint Gobain, ECT recycles excavated earth from the construction industry to backfill the open-cast quarry at Cormeilles-en-Parisis (95). This involves backfilling the quarry to great heights, using successive level embankments. A major geotechnical challenge, accompanied by the installation of secure unloading zones and traceability of materials. An interview with the site managers, who manage each stage of this project with rigor and passion. Soil traceability, guaranteeing quality at every stage Soil traceability is at the heart of ECT’s excavated soil recovery process. Upstream, each excavation site is validated by a Declaration of Prior

In 2022, the site was one of the largest illegal landfill sites in the Val d’Oise, a major environmental issue for the prefecture. Today, the ECT rehabilitation project is making further progress. The input of inert earth from the construction and public works industry, essential for financing and carrying out this large-scale project, has been completed. Now it’s time for planting and reforestation. An ambitious renaturation project At the request of the Val d’Oise prefecture, ECT has designed an ecological and agricultural project to re-naturalise the site. The project is financed entirely by inert earth from the construction industry. But

The 2nd phase of the project is off to a flying start At the Boissy/Puiseux site, the 14,000 m3 of illegal waste were removed before the summer. Stage 2: agricultural and ecological restoration. The site is now open to inert soils which will be used to carry out the development work. The project is scheduled for completion in 2024. Find out more about the project