Main contractor: Date of construction Designer: Products used: ROCKFALL PROTECTION Product: Steelgrid MO PERTH QUARRY REDEVELOPMENT PERTH, AUSTRALIA Problem A disused quarry in Perth was proposed to be redeveloped. The existing open-cut quarry had side walls generally sloping between 50º and 75º with heights of up to 45m. The approximately planar quarry base fell away towards the quarry entrance. The existing side walls are bloc

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