The obligation
WA Code of Practice requiring surface rock support in underground mine high headings (≥3.5 m), integrated with existing ground reinforcement systems.
Published by WorkSafe WA under the Mines Safety and Inspection Act 1994, this Code mandates installation of surface rock support (mesh, shotcrete, or other surface treatment) in all WA underground mines where headings are nominally ≥3.5 m high, unless a documented geotechnical risk assessment justifies a departure. Support must cover backs and sidewalls to 3.5 m from the floor. The Code targets gravity-induced rockfall only; dynamic failure mechanisms are excluded and must be managed separately.
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- What
- WA Code of Practice requiring surface rock support in underground mine high headings (≥3.5 m), integrated with existing ground reinforcement systems.
- Source
- worksafe.wa.gov.au
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Labels
ground control
underground mining
rockfall
geotechnical
WA mines safety
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Frequently asked questions
Which WHS law does this come from?
Surface Rock Support for Underground Mines – Code of Practice (WA) is a WHS requirement set out in Surface rock support for underground mine (WA). It is made under Work Health and Safety Act 2020 (WA). The relevant provision is Mines Safety and Inspection Act 1994 > Codes of Practice > Surface Rock Support for Underground Mines.
What does this WHS obligation require?
Surface Rock Support for Underground Mines – Code of Practice (WA) is a WHS obligation under Surface rock support for underground mine (WA). In short, WA Code of Practice requiring surface rock support in underground mine high headings (≥3.5 m), integrated with existing ground reinforcement systems.
What changed recently?
Surface Rock Support for Underground Mines – Code of Practice (WA) was last updated on 24 August 2026.
