There is an option on the Sandvik MB670 Bolter Miners of an on-board dust extractor. This system helps to reduce the amount of dust that operators are subjected to and also provides the required ventilation for the cutting area of the Bolter Miner.
With operators’ health in mind, it was decided that efforts should be made in order to reduce the level of noise produced by these filtering units. As a consequence, two solutions were created. The first is an outlet silencer or ‘sound absorber’, which can be fitted to the existing filtering unit, and the second is a whole new dust extractor unit which also includes an elastic mounted fan.