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Irle Walzen is a company producing rollers for metal processing industries, located in the german town of Deuz. Their factory is split into two parts, located on each side of the town's former railway station on a branch line from Siegen-Weidenau to Irmgarteichen-Werthenbach.
When from the 1990s on the privatised DB stopped serving unprofitable small sidings all over the country, industries along the line started moving to road shipping, causing the line to be closed in 2004.
The roller factory also ships their supplies and final products by truck, but transportation between the two factory parts is done by a single locomotive with a few cars that are locked in on a few hundred meters of isolated track.