the "Haine-Sambre-Meuse-Vesdre valley", or the "dorsale wallonne."

Bosnia and Herzegovina

The major coal mining basins in Bosnia and Herzegovina are the Tuzla Basin with the Kreka and Durdevik mines and the Zenica Basin with the adjacent Kakanj, Novi Travnik and Gracanica. There are also substantial reserves of coal in Sanski Most, Ugljevik,