When mining coal or other minerals took the miners ever deeper into the ground, it became necessary to ventilate the shaft, in other words to supply sufficient...

The pneumatically driven hammer drill by the manufacturer Flottmann-Werke drills holes into soft or medium-hard rock (for detonations, for example). It...

The pneumatic lamp presumably was used in the Ruhr-area coal mining industry as an underground source of light in the 1940s. Today it belongs to the LWL-Industrial...

The pneumatic pick (manufacturer unknown) is an air tool which was presumably used for breaking up coal in the Ruhr-area mining industry in the 1950s....