Section 27-7. Above-ground rock-falls and rock-slides

The work shall be planned having regard to those parts of the HSE plan that concern the risk of rock-falls or rock-slides. As a preventive measure, the height and gradient of excavated overburden and excavation faces should therefore be adapted to the nature of the underlying surface, the quality of the rock and the excavation methods.
Before work commences or is resumed, overburden or excavation faces above work areas or traffic routes shall be inspected for loose material and rock. If necessary, the walls shall be scaled.