<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. ...

<p>What separates the support of mining openings from the support of similar civil engineering structures is the fact that mine openings have to survive large deformations as a result of changing stress conditions induced by progressive mining. Steel fibres ...