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Coal Inspectorate | Bulletin | No.213 V 1 | 15 August 2023

Dozer rollovers

What happened?

Resources Safety and Health Queensland is cracking down on Queensland coal mines that are failing to protect workers from dozer rollover incidents. The industry’s independent safety regulator will be targeting mines and suspending operations when the risk is not at an acceptable level, after noticing an increase in bulldozer rollovers, including two in the past week. There have been 19 dozer rollover incidents from January 2022 to August 2023.

August 2023 incidents

Incident 1

On 7 August 2023 a Coal Mine Worker (CMW) in Blackwater was required to push high waste material down using a CAT D11T Dozer to allow for the safe excavation of material using a large hydraulic excavator. Prior to executing the task, the work area inspections had not identified the hazards present which included an over-steepened excavated face on the high wall, the substandard berms in place, and the steps required to safely complete the task (refer to Figure 1).

Incident 2

On 8 August 2023, a CMW in Isaac Plains was in the process of marking out the dig limits for an excavator double benching in the area with a CAT D10T dozer. The coal mine worker identified the area had no edge protection berms in place and did not manage the risk associated with this hazard. While reversing towards the edge, without the edge protection berm, the dozer has breached the open edge and rolled approximately 110 degrees to the bottom of the slope (refer to Figure 2).

Dozer rollovers from 2022-2023

Key issues


All Site Senior executives should regularly audit:

Every shift supervisor should:

Positive findings include:

  • many CMWs are now wearing seatbelts at the time of the incidents, resulting in fewer injuries.
  • the mitigating controls, i.e. Roll Over-Protective Structure (ROPS), Impact Rated Glass (XIR), and seatbelts prevent serious injuries.

Authorised by Jacques le Roux - Chief Inspector – Coal

Contact: Stuart Brown, Inspector of Mines , +61 7 4936 0180

Issued by Resources Safety & Health Queensland

Safety: This information is issued to promote safety through experience. It is not to be taken as a statement of law and must not be construed to waive or modify any legal obligation.
Placement: Place this announcement on noticeboards and ensure all relevant people in your organisation receive a copy, understand the content, findings and recommendations as applicable to their operation. SSEs should validate that recommendations have been implemented.

All information on this page (Dozer rollovers - is correct as of time of printing (Oct 4, 2023 5:43 pm).