collieries in the Harz mountains in 1834. Lifts were then built into the shafts in British collieries, and wooden pithead scaffolding erected to hold the cable wheel. New technical developments in ventilation [...] from European and American collieries was the universal fuel during the Industrial Revolution. Nonetheless technical inventions in mining played a relatively insignificant role. The main cause was the ongoing [...] extraction pumps. In order for collieries to remain independent of fluctuations in natural water supplies. coal was also brought to the surface with the help of hydraulic power. The Oker pond in the German Harz