2018 Conference Presentations

Peter Grogan
Glencore
Clermont Open Cut

Kyle Hughes
Stanmore

Stuart Sephton
National Plastics & Rubber Pty Ltd

Matthew Downing
Anglo American Dawson Mine

Blair Whitney & Ben Murphy
Coronado Global Resources Inc

Francesco Mele & Joseph Guinea
BMA & JJ&D Innovations

Travis Hitz
Hastings Deering (Australia) Limited

Robert Cohen, MD – Clinical Professor, Division of Environmental and Occupational Health, University of Illinois at Chicago School of Public Health.

Tom Cobcroft
GM/SSE Capcoal Surface Operations

Dev Gil-Sanchez
Business Improvement Specialist, Anglo American – Capcoal Open Cut

Anthony Manousso
Control Systems Coordinator, Anglo American – Capcoal Open Cut

Bunds are a safety critical control in open pit mining to prevent and mitigate risks associated with heavy vehicle operations. Between 2014-2019 at Capcoal Surface we have had 14 incidents and in Queensland 2012 – 2018, 47 incidents where bunds have stopped uncontrolled vehicles and prevented potentially fatal injuries. At Capcoal we have 100km+ of bunds in the pit, with more than 50 heavy vehicles interacting regularly. Currently the process to monitor & audit the compliance to standard is made via visual inspection with no quantitative process or records.

In a collaboration with SICK sensors we developed a system using laser sensors to scan the bunds and provide a comprehensive measurement including not only height but:

• Roadside facing batter angle.
• Width at the top, if applicable, trapezoidal bunds.
• Distance to high-wall.

Data is transmitted via ethernet to a central data collection system called TDC which then generates a heatmap and a report identifying sections of bund requiring intervention and their criticality.

Some of the benefits of this development, besides measuring all characteristics mentioned before are:

• Is an objective and quantitative process to monitor / audit bunds compliance to standard in real time.
• Cost and time efficient solution as to comply with inspectorate recommendations then survey would be required, incurring in extra cost to audit.
• Visibility across all active bunds and ranking of deficient sections to prioritise as per criticality.

Next is presented an schematic of the sensors installed on a truck and scanning the bunds at both sides.

Josh Leppard
Overburden Supervisor, BMA Saraji Mine

Tragically Saraji Mine had a fatality on New Year’s Eve 2018 involving a bulldozer rolling down an embankment. The first responders to this incident required the use of heavy duty slings and shackles to upright the dozer. This involved personnel traversing down a steep embankment on undulated ground during the night carrying D-shackles that weighed approximately 62kg each, this created a significant manual handling risks to the people involved.

Post incident, Saraji became aware of light weight synthetic couplings that are made specifically for the marine industry that significantly reduced the weight whilst providing exceptional strength properties.

We reached out to the manufacture of the light weight synthetic couplings in New Zealand in an attempt to replicate this technology within the mining industry. By substituting the existing steel D-shackle with a custom made light weight synthetic design, we have reduced the potential of a manual handling incident when recovering surface mobile equipment or the potential for stored energy within the steel to become airborne should the steel D-shackle capacity be exceeded.
The soft couplings were tested to 175,000 kg for a maximum breaking force (MBF) of 510,000 kg without breakage and have a total weight of 8.2 kg compared to the 62 kg steel D-shackles that are normally used.

The synthetic couplings have been successfully trialled on site to extract various pieces of surface mobile equipment. They have been included as mandatory items in the emergency equipment recovery trailer along with other items to aid in the immediate recovery should the need arise.