Operations
Backfill
Full turnkey management and operation of paste systems. Inclusive of underground ensure reliable, predictable operating results ensuring the rest of the mining cycle can continue unimpeded.

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Engineering & Technical Services in support of the full lifecycle of mining infrastructure projects. From surface to underground, concept design through to definitive studies, Consulting and EPCM services through to implementation and operational support, Quattro draw on our extensive experience to create the multi discipline engineering partnership your project needs.


Full turnkey management and operation of paste systems. Inclusive of underground ensure reliable, predictable operating results ensuring the rest of the mining cycle can continue unimpeded.
Quattro Projects Delivers a Strong First Half of 2026: Paste Plant & Mining Infrastructure Success
The first half of 2026 has been defined by strong project delivery,major milestones, and continued growth across Quattro's projects division. Fromunderground paste reticulation installations to complex paste plant upgradesand shutdown-critical infrastructure works, our teams have continued todemonstrate why Quattro is a trusted partner for mining projects acrossAustralia and Papua New Guinea.
As demand for specialist paste plant construction, paste reticulation systems,and mining infrastructure projects continues to grow, Quattro has deliveredexceptional outcomes through innovation, collaboration, and safe execution.
Strong Momentum Across Mining Projects
Quattro's Projects team recorded one of its strongest starts to theyear, delivering three of the best-performing months on record during the firstquarter of 2026.
This success reflects disciplined project planning, lessons learnedfrom previous projects, and a strong culture of accountability across ourengineering, construction, and project management teams.
Alongside delivering active projects, the team continued to strengthenlong-term operational support contracts across several major mining operations,while progressing significant paste plant tenders and expanding opportunitieswithin specialist paste operations.
This growing pipeline positions Quattro for continued successthroughout the remainder of 2026.
Fosterville Paste Reticulation Project Sets New Benchmarks
One of the standout projects of the year has been the Fosterville PasteReticulation Project in Victoria.
Following mobilisation under challenging conditions, including floodingimpacts affecting logistics, Quattro's crews quickly established momentum.During the first stages of the project, approximately 2,000 metres ofunderground paste reticulation pipework was successfully installed with strongsupport from our Products Division.
Over the following months, the team continued to exceed expectations byconsistently achieving installation rates that had previously been consideredunattainable by the client.
A key contributor to this success was the implementation of innovativepipe hanging systems combined with disciplined project execution, allowing theteam to deliver work safely, efficiently, and to an exceptionally highstandard.
The results have strengthened Quattro's relationship with the client,leading to the award of the next project phase involving the installation ofthe underground rising main. This work provides continuity for our crewsthrough the remainder of 2026 while reinforcing Quattro's position as a trusteddelivery partner for underground paste reticulation systems.
Porgera Paste Upgrades Progress Toward Commissioning
The Porgera Paste Upgrades Project in Papua New Guinea has reachedseveral significant milestones during the first half of the year.
Structural works are now largely complete, with current activities focused on:
- Process pipework installation
- Switch room constuction
- High-voltage trenching
- Moton Control Centre (MCC) installation
- Equipment terminations
The project remains on schedule to commence commissioning by the end ofAugust 2026.
Progress has been made possible through close collaboration between Quattro's engineering, construction, project management, and client teams, ensuring the upgraded paste backfill system is delivered safely and efficiently.
Big Bell Fan Installation Delivered Ahead of Schedule
Quattro also successfully completed a critical ventilation infrastructure project at Big Bell in Western Australia.
Working within a tight 48-hour shutdown window, the team removed existing primary ventilation fans and installed a new four-fan station while simultaneously completing associated civil works and southern fan installations.
Despite challenging site conditions, the project was completed six days ahead of schedule, demonstrating Quattro's ability to execute shutdown-critical mining infrastructure projects with precision, planning, and efficiency.
Delivering Value Through Innovation and Collaboration
Across every project delivered during the first half of 2026, one theme has remained consistent: collaboration.
Whether supporting underground paste systems, delivering major paste plant upgrades, or executing complex mining infrastructure installations, Quattro continues to combine technical expertise with practical innovation to achieve better outcomes for clients.
From engineering and procurement through construction and commissioning, our integrated approach enables us to safely deliver projects while maintaining quality, schedule, and performance.
Looking Ahead
With a growing pipeline of projects, expanding client partnerships, and major contracts progressing across Australia and Papua New Guinea, Quattro enters the second half of 2026 with strong momentum.
The continuation of the Fosterville underground rising maininstallation, ongoing progress at Porgera, and new opportunities acrossspecialist paste operations reinforce Quattro's commitment to deliveringinnovative engineering solutions for the global mining industry.
As we continue to grow, our focus remains unchanged: delivering safe,reliable, and high-quality outcomes that help our clients maximise theperformance of their mining operations.