Safety Alert

What Happened

A light vehicle entered an active exclusion zone on the Pit 4 haul road while a CAT 793 haul truck was conducting dumping operations. No physical contact was made and no injuries occurred. The LV driver reported not seeing the exclusion zone signage due to dusty conditions and reduced visibility. The designated spotter was not in position at the time of the event.

Why It Matters

Vehicle interactions remain the #1 cause of fatalities in Australian surface mining operations. This event had the potential to result in a fatality — a CAT 793 haul truck weighs approximately 230 tonnes when loaded. Similar vehicle interaction events at Pit 4 have increased by 40% this quarter, indicating a systemic trend that requires immediate attention.

Immediate Actions Required

1. 1All light vehicle operators to confirm awareness of active exclusion zones before entering any pit area — verify with Shift Supervisor
2. 2Spotter coverage to be verified by the Shift Supervisor at the start of each shift and documented on the pre-start checklist
3. 3Exclusion zone signage at Pit 4 haul road to be inspected and upgraded with high-visibility reflective materials by end of week
4. 4Dust suppression schedule for all active haul roads to be reviewed and increased during high-activity periods
5. 5All personnel to complete a Take 5 assessment before entering any active exclusion zone area

Key Learning

Multiple safety controls must work together to prevent vehicle interactions. When one control degrades (signage visibility due to dust), the backup controls (spotter presence, physical barriers) become critical. This event demonstrates that our defence-in-depth approach only works when ALL layers are functioning. Always verify controls are active before commencing or entering work areas — never assume they are in place.

Discussion Points for Toolbox Talk

• •What would you do if you couldn't clearly see exclusion zone signage due to environmental conditions like dust or glare? What should the default action be?
• •How do you currently verify that a spotter is in position before entering a dump zone or exclusion area? What improvements could we make?
• •When was the last time you reported a near miss involving vehicle interactions? What barriers exist to reporting, and how can we reduce them?