3. Sources

3.1 Quantitative data

Information can be obtained from Charbonnages de France, operators and public services, particularly regional ones: DRIRE, ADEME, regional environmental agencies, CETE, as well as LCPC...

Updated data on coal shale resources would be approximately as follows.

There are around 500 slag heaps in France, originally representing almost 1 billion tonnes of material, more than a quarter of which has been commercialized.

They are located in three coalfields: Nord-Pas-de-Calais, Lorraine and Centre-Midi.

• Nord-Pas-de-Calais coalfield (BHNPDC)

  This is the largest: 260 slag heaps representing 700 million tonnes, of which 20 are...