Like most other cities in the region, Herne (ancient Haranni) was a tiny village until the 19th century. When the mining of coal (and possibly ore) and the production of coke (the fuel processed from the harvested coal) and steel began, the villages of the Ruhr area slowly grew into towns and cities because of the influx of people, mostly from the East (Germany as well as East-Prussia, Bohemia, Moravia, Silesia, Poland and beyond, even Italy and Spain), looking for, and finding, work.