Every year many peoples hearing is damaged and the hearing loss is permanent. Unlike breaking your limbs the effect is not instant and therefore noise tends to be forgotten until you notice that you cannot hear certain noises. By then its too late. Guidance on noise control is available in HS(G)109 Noise at quarries. Why not get a copy and use the guidance to check the controls in your work place Many of the controls for noise are also used to control dust. Cabs on mobile plant and fixed plant will isolate you from noise and dust provided they are properly constructed and the windows are kept shut.