By comparing old maps closely, one can see the location of the Oil mill precisely located: today, on the way to the Rumbecker Hammer, two residential buildings stand on the site of the oil mill.

Everything that could be used to produce oil was ground in the oil mill. This included rapeseed, hemp, linseed and poppy seeds, but also beech nuts, nuts, grape seeds and sunflower seeds.

Up to 150 litres of oil could be produced from 300 kg of rapeseed in a 15-hour working day.