RWE Power operate the Inden opencast mine with the output of Brown Coal going to their nearby power station. The Inden mine in the Aachen City Region extends from the municipality of Aldenhoven and the A 44 (Düsseldorf-Aachen) motorway in the north to the A 4 (Cologne-Aachen) motorway in the south. In 2017 there were reserves of 260 million tonnes with output capacity of 20 million tonnes per annum. This is one of five spreaders in use on the site which have a total capacity of 110,000 cubic metres of material per day.