The first crush pillars on the Bushveld Platinum mines were introduced at Union Section in 1978. Before the introduction of crush pillars, serious problems were experienced when stoping advanced to a point 30 m to 40 m on both sides of the centre gully. At ...

<p>The Code introduces the requirement to install surface rock support in high headings(ie. those greater than or equal to a nominal 3.5m in height) in all Western Australianunderground mines unless a documented geotechnical risk assessment justifiesotherwise. ...