🛤️ Ballast, the stones beneath the track, helps to keep the track in place as trains pass over it. It wears down over time, becoming more rounded and less effective – this is where our ballast cleaning system comes in. ➡️ www.networkrail.co.uk/high-output-machines Ballast cleaning removes the worn ballast, screens it and replaces it with new angular ballast. #railway #machines | Network Rail