Vieille Montagne was a zinc mine in Kelmis (La Calamine), a town in Belgium between Liège and Aachen. The mine's name is French for "old mountain", and this is also reflected in its German name, (earlier, ). The mine was once a bone of contention between Prussia on the one side and the United Kingdom of the Netherlands (later Belgium) on the other, that resulted in a piece of land that became the territory of Neutral Moresnet. History After he developed an original refining process, Belgian industrialist Jean-Jacques Dony received a decree from the Napoleonic authorities in 1806, allowing him to mine the zinc ore deposit at La Vieille Montagne near Liège. At that time, the area belonged to the French département of the Ourthe. After Napoleon's defeat, in 1816 the département was divided between Prussia, the Netherlands and the neutral zone of Neu-Moresnet, which contained the zinc mine. The ( ‘Vieille Montagne Zinc Mining Company and Foundries’) was created in 1837, after the independence of Belgium (which took over the Dutch claim to the neutral zone). The Belgian mine continued its operation until the end of the nineteenth century, when a workforce of 300 produced 8,500 ton of crude zinc annually. The company opened a second zinc mine in Zinkgruvan in Sweden, which is still in operation. It also ran a harbour in Åmmeberg to ship the zinc. The ore was shipped to another affiliate in Balen, Belgium. The company of Belgium (or ‘VM’ for short) came to England in 1896, specifically to the small remote village of Nenthead in the Pennine Hills of Cumbria. The company survived two world wars and the inter-war economic depression, as well as fluctuations in the geological supply and market demand for zinc and lead. Then in 1949, after fifty-three years of operation, the VM sold its mineral leases, plant and equipment and left. In the department of Ariège in France, the VM company took the lease on the zinc mines at Bentaillou in the Pyrenees, also after World War II. The name became synonymous with zinc oxide and with rolled zinc, especially for building applications. The company was the world's oldest and also largest zinc producer, producing at its peak at least 149,000 tonnes per year. In 1989 Vieille Montagne was merged into the Union Minière group, based in Belgium, which became Umicore in 2003. The group continues its rolled zinc activity