Gasmasker

This [gas mask](http://https://en.wikipedia.org/wiki/Gas_mask) was one of the first masks that was used in the mines to protect the workers from breathing in contaminated air. The long tube in the front indicates that the mask needs an oxygen tank to be fully functional. The oxygen tank is attached to the front of the tube which provides the mine workers with a sufficient amount of oxygen, while the tank is carried on their backs. Through a special filter, the oxygen is breathed in through the tube and breathed out of the brown circle above the tube through a similar filter. Depending on how much oxygen is used, the tanks contain 30-60 minutes of air. Created by: Fabiënne Gerono *This object can be found in the Dutch Mining Museum (Nederlands Mijn Museum) in Heerlen, The Netherlands.*