Air hardening (pilgrim rolling)
The sound of steel hardening after pilgrim rolling. After the termination of pilgrim rolling, certain alloys have to be air-cooled in steps…

Put on your headphones and experience what historical ears sounded like.
The sound of steel hardening after pilgrim rolling. After the termination of pilgrim rolling, certain alloys have to be air-cooled in steps…
The sound of cutting steel. This machine for cutting steel bars of different profiles and dimensions is manufactured by the German company…
The sound of a bridge crane. A bridge (overhead) crane is used to handle heavy loads in the plant. The loads are…
The sound of a two-chain conveyor operating in the mine. It was used for the conveying of coal extracted from the coalface…
The sound of water percolating through the bed rock into the mine galleries. A number of mine structures (such as pits, shafts…
The sound of a wardrobe chain lowering and raising in pithead baths in a coalmine. A peculiarity of this mine are the…
The sound of a pneumatic pick hammer hacking into the coalface. It was manufactured by Ravne Ironworks in 2005. It is used…
The sound of a pneumatic drill in operation. It was manufactured by Ravne Ironworks in 2005. It is used to drill relatively…
The sound of a battery locomotive in motion. The train is used in the transportation of miners in and out of the…
The sound of a telephone located near the coalface. It was manufactured by Tevel, Teve Varnost, Zagorje, Slovenia, in 1990. The long…
The sound of a submersible pump in operation in a coalmine. It is a Bibi 3 model pump manufactured by Flyft, USA,…
The sound of a rotating ventilation fan in operation. It was manufactured by Tevel, Teve Varnost Elektronika, Zagorje, Slovenia, in 1997. It…
The sound of the electronic device used for the measurement of toxic gases in a mine. Manufactured by Oldham, UK, 2005. It…
The sound of the Bedia diesel locomotive in motion within the coal mine. It is a special version of a typical mine…
The sound of a stationary diesel locomotive idling in front of the coalmine entrance. It is a special version of a typical…
The sound of a hand cranked siren. This machine has a handle on the top which has a dual purpose: it helps…