Welcome to Raumix. crushed aggregate (stone and sand) to the construction and associated industries. . over relavent province and click to reveal Raumix Aggregates Quarries. +.stone quarries in pretoria,Northern Region – Willows Quarry | RaumixPlot 47, Lynnwood Road, Swavelpoort, Pretoria East . Dump Rock; Gabion Rock; Blasted Rock; 37.5mm Concrete Stone; 26.5mm Concrete Stone; 19mm.