Why water doesn’t actually work for dust control

As the road’s wearing course deteriorates, rolling resistance increases, the surface corrugates and haul speeds drop, impacting your production cycle times.

At the same time, the rough surface is harsh on equipment. Loose material and exposed rock increase stress on tyres and components, and you need to grade more often to keep roads serviceable.

Dust adds another layer of hidden costs. Air filters clog more often, and trucks experience more wear when they operate over uneven surfaces.

Water isn’t always cheap, especially when you add up the cost of applying it. At large operations, haul roads alone can consume millions of litres per day just to maintain basic dust suppression. And if your water carts run continuously, labour and fuel costs increase.

Water has been the standard for decades because it’s readily available, easy to apply, and delivers an immediate short-term result. Under the right conditions, it’s “good enough” to meet basic dust control requirements.

But today, mining operations have changed.

Haul trucks are now significantly larger, with payloads now reaching 280 tonnes, and the total weights upwards of 450 tonnes. Heavier loads place far more stress on haul roads, while heat and accelerated wear, amplify the impact of surface instability.

Tyres run hotter, surfaces break down faster, and roads are worked harder with every pass.

At the same time, the expectations on mining operations have shifted. Everyone is under more pressure to maximise productivity, while water availability is now constrained in many regions – you have to balance the needs of local communities, Traditional Owners, farmers, and neighbouring mines.

So the plain water approach persists. Not because it’s effective, but because it’s familiar.

Modern dust control methods focus on stabilisation rather than suppression alone.

“When you control the fines, you control the road quality,” explains Julian, who has spent a decade helping mining operations suppress dust and stabilise their roads. “If the fines stay in the road, you don’t need to keep chasing your tail.”

That shift changes how the road behaves under load.

Instead of a surface that constantly breaks down and needs rewetting, the road holds together. Fines remain bound within the matrix, which reduces material loss and limits dust generation at the source while increasing tyre life.

“You may not eliminate road grading completely, but you can make primary haul roads more efficient, which frees the graders up to do a better job elsewhere and helps keep your trucks out of the maintenance bay,” says Julian.

Biological stabilisers, like Terrabind Ultimate, trigger a natural biocementation process within the soil. It forms a binding structure between particles, locking fines into place.

It creates a more wet-stable road surface that performs consistently for weeks and months, without the constant cycle of watering and reworking.

In practice, that means less water use, lower maintenance demands, and more predictable road performance.

Water may currently have a vital role on mine roads. But on its own, it doesn’t solve your problems.

It evaporates quickly, fails to retain fines, and with repeated use, degrades the road faster. That’s why many mines use more and more water every year while their road conditions continue to decline.

When you switch your focus to a long-term approach starting with road stability, you don’t have to react to dust control every shift and manage fluctuating results.

That shift reduces water use, improves road performance, reduces downtime and lessens mechanical wear—delivering more consistent results across the operation.