PART XVIII EXCAVATION, UNDERGROUND WORK AND ROCK CRUSHING — Faces and slopes
409
(1) Where work is being carried on in an excavation
409(a)
the slopes shall be scaled and trimmed or otherwise stabilized to prevent slides of material or falls of rock; the height of a face of which the material is not at a safe angle of repose shall not be greater than the height which can be safely reached by the equipment being used; and
409(b)
overhanging banks and trees or stumps and overburden shall be removed in the area within 5 metres from the edge of the excavation; and the bench height for sand, gravel and unconsolidated materials shall not exceed 5 metres and, in any event, shall not be higher than can be reached with equipment in use.
409(c)
means shall be provided to prevent the erosion of the slope by surface water.
409(2)
Except where the minister, in writing, permits otherwise, in a pit, quarry or similar excavation
409(3)
A worker engaged in scaling, sloping or trimming banks or faces shall use a fall protection system that meets the requirements of Part X.
409(4)
Scaling and similar work shall be undertaken from the top down and the areas into which material may fall shall be kept clear of workers and equipment.
Not legal advice. Verify the cited article against the signed agreement.