Site references
Use of industrial sub-products - Coal shales

Numerous major references in northern and eastern France: road and motorway networks (notably the A1 freeway).

Frottey-Liotant bypass.

Notable use in the construction of the new TGV Nord high-speed rail line (figure ): around 10 million tonnes according to source Surschiste (early 1990s).

An important recent economic reference: the Dourges multimodal platform.

Main quantities :

• spoil heaps: 2.5 million m³ ;

• backfill 1 million m³ ;

• subgrade 150,000 m³ ;

Landscaping and environmental interest of the operation with the remodeling of the slag heaps.