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The final vision for the Hornsby Quarry spoil management project (pictured), off Sydney's upper north shore. The quarry was operational for most of the 20th century.

News
New trends in managing mining liability

Some jurisdictions have introduced reforms to manage the liability of resource projects in the remediation phase – but there are concerns these reforms may unduly impact quarries with traditionally lower risk profiles than mines. Michael Cramer discusses his work in this field. Read more »
A Brim’s Bulk Transport truck at work. Any quarry that sub-contracts the transport of its aggregates can be liable within the supply chain.

News
Better understanding of the chain of responsibility

The National Heavy Vehicle Law administers uniform laws for heavy vehicles exceeding 4.5 gross vehicle mass across most states and territories. Simone Reinertsen explains what recent changes to the laws could potentially mean for the quarrying industry. Read more »
Tegra Australia’s Jugiong Quarry during the 2011 New South Wales floods. Until now, climate risk has been largely viewed as a physical phenomenon – but it could well pose financial problems as well.

News
Addressing climate change risk in a resource context

Until now, climate change impacts have been largely described in physical terms. However, as Elisa de Wit argues, there are financial dimensions to climate risk, and if not suffi ciently addressed by industry over time, it could cause as much damage to an extractive business as the climate. Read more »

News
Improving the regulatory space for the extractive industry

In recent years, the Victorian Government has made a concerted effort to improve earth resources and approvals processes. Anna Cronin, the Victorian Commissioner for Better Regulation, explains what these reforms are and how industry members can assist the regulator to fast-track approvals. Read more »

News
The national economic forecast to 2024

Robert Mellor will bring out his barometer at the IQA conference to discuss the national outlook in construction activity to 2024. While it might all seem ‘doom and gloom’, he predicts the picture beyond the horizon is bright – if the industry plans ahead. Read more »

Attachments
Electrical potential: Could batteries replace diesel?

Suddenly it seems all pieces of the technological puzzle are falling into place. The battery revolution is under way – and one multinational OEM is convinced it can significantly change the energy landscape of the mining, and by extension the quarrying, industry. Read more »

Attachments
Is it 'game over' for the diesel engine?

The diesel engine has become a highly efficient power source – but how much further does it have to go? Dr Staffan Lundgren discusses the engine’s development and what its future may look like. Read more »
Three primary maintenance practices for Tier 4 Final engines include keeping the system clean, properly storing and handling DEF, and using the correct materials.

Attachments
Taking on Tier 4 engines

Tier 4 Final engines are not compulsory in Australia but, thanks to the innovations of OEMs, the nation is inexorably following the global transition in engine evolution. For operations feeling the ‘pressure’ to switch, how they approach the change could be vital to implementing fuel savings. Read more »
Dewatering screens are a low cost solution for producing a drier material.

Sand Processing
Eight reasons to use a dewatering screen in your application

Dewatering screens have long been considered important instruments in sand processing – and an effective means for producing drier, cleaner end products, particularly in the capture and retention of ultra-fine materials. Read more »
Figure 3. A circular-motion screen. The correct method of tensioning the drive is to apply sufficient force (tension) to allow the screen to start without the vee-belts slipping.

Maintenance
Motorbase solutions for vibrating screen drives

Richard Sharp outlines the best drive options for vibrating and incline screen solutions. Read more »
Nylon chains draped along the screen panels create a “snaking” motion during normal operation that reduces the opportunity for material to build up.

Screens & Feeders
Three ways to prevent blinding, pegging on your vibratory screen

Blinding” and “pegging” can cause losses of screen efficiency and production. The terms are often used interchangeably in describing material covering screen surface area during any type of screening process, but there is a difference between the two. Read more »
Pegging happens when near sized particles fall into apertures and the machine doesn’t have enough stroke to throw them back out.

Screens & Feeders
Are your screens running to their optimal capacity?

Screen optimisation is a vital cog in the quarrying process. Darren Toth discusses the three most important aspects of screen performance – and provides advice that can increase an operator’s awareness of just how well their screen plant can run. Read more »
A jaw crusher can be an excellent primary crusher when used to prepare rock for subsequent processing stages.

Crushing
Tips for maintaining efficiency in crushing circuits

Today, the demand for highly specified aggregates means smaller top-sized products are finer than in the past. This means the crushing application has to be just as precise. What are the best tips for crushing materials at the first go, without resizing or stockpiling oversized products? Read more »
The Sandvik Reborn solution enables old crushers to be rebuilt from the ground up, aided by the latest advancements in technology.

Crushing
Buy new or rebuild: Does a 'reboot' offer a new lease on life?

Is your crushing plant ready for an upgrade or complete replacement? Turkka Kulmala says a new alternative to the conventional crusher overhaul, with innovative thinking, is a rebuild solution. Read more »
It’s hard to imagine a national government today undertaking ambitious projects like the Hoover Dam ...

Education
Water, decentralisation and the economy in the 21st century

With Australia now in election mode, Warwick Lorenz outlines his vision of the nation we should be in the next 50 years. Read more »

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Saturday, 21 September, 2019 10:53am
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