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An example of a flocculated conventional tailings slurry. Conventional low density deposition of tailings still has a part to play for the right site at the right time.

Tailings management: Laying the groundwork

The ideal tailings management system produces the correct volume of process water at the best quality and tailings with the right characteristics, while minimising the impact of waste solids on the site’s function. The key to getting it right, Stewart Reeve explains,
is to understand the nature of your tailings. Subscription required.
In her youth, Miriam went on a safari to the Olduvai Gorge, which is recognised by some as the “cradle of civilisation”.

Miriam Watters: The Lass from Tanganyika

When Doug Prosser first approached Miriam Watters for an interview, her immediate reaction was surprise, peppered with modest protests that there were many others in the quarry industry more worthy and interesting. Yet, as Doug explains, Miriam is herself a woman with a very worldly story. Subscription required.
Upon acquiring McLeod Rail, quarry industry veteran Mary Thompson sought to expand the business and improve its professionalism.

Business improvement know-how gets rail business on track

A Melbourne based rail maintenance contractor has successfully collaborated with a Commonwealth Government initiative to develop new operating systems to increase management's control over operational processes and improve its marketing. Subscription required.
Babcock takes on the risk of maintenance expenditure, including unexpected and planned machine maintenance.

Mobilising and standardising the fleet

Drawing on its experience in the UK and North American markets, a multinational engineering services support company discusses a new model of fleet management that can promote productivity and efficiency and simplify the costs of ownership. Subscription required.
The Johnex Ezipump DV is a primer-sensitive pumped emulsified explosive.

Giving back blasting power to the customer

A Western Australian explosives supplier is offering its medium size to large customers a novel solution to planning and controlling their own blasting schedules. Mandy Parry-Jones spoke to Johnex national business manager Kerry Hughes. Subscription required.
Mark Dowd (right) was first approached by Peter Allitt for advice on a non-standard blast design.

Blasting close to infrastructure at Bli Bli Quarry

The Bli Bli hard rock quarry, on Queensland’s Sunshine Coast, is within 2.7km of the city of Nambour and surrounded by the Parklands Forest Reserve. How does a quarry like this plan and design a non-standard blast without disrupting local fauna and flora, the neighbouring community and its own critical infrastructure? Subscription required.
Mainland Civil’s use of a fleet of rock hammers at Infinity Tower was ruled out as impractical.

Blasting challenges in advanced vibration management

A system employed for permanent vibration monitoring in blasting building foundations has positive ramifications for blasting techniques in quarries. Subscription required.
Minera San Pedro’s mobile fleet comprises the Powercrusher PC1055 jaw crusher, a PC1375 impact crusher and a HCS3715 screener.

Productivity through optimised drilling, crushing operations

An Argentinian drilling contractor has successfully combined the workload of an Atlas Copco drill rig and the Powercrusher mobile range. Subscription required.
The Caterpillar MD5150 incorporates a proven rock drill, patented carousel rod changer and new cab.

New Cat track drill reduces cycle time, improves productivity

The new MD5150 tracked dril rig can reduce costs, cycle times and improve productivity. Subscription required.
Silt ponds or tailings ponds have been used for decades across the country with varying degrees of success.

Paste technology: An alternative look at tailings management

As the quarry industry has become more regulated, the treatment of tailing and process water has grown more intricate. Jim Hankins considers the role paste technology has played in tailings management in the mining industry and argues why it could also be adapted for quarrying. Subscription required.
Since the M2500 sand wash plant has been operating at Wood Mulch Industries, it has produced approximately 80 tonnes of washed sand per hour.

Washing creates value in sandstone aggregate

A Queensland raw materials producer's new sand washing plant has impressed from the get go. Subscription required.
The V7 is a dry-processing plant that is fed with surplus crusher dust and produces well-shaped, evenly graded  sand that will replace natural sand, without the need to blend.

Manufacturing sand for a low carbon era

A research program being undertaken by a Cardiff University engineering department has clearly demonstrated that good quality sand can be manufactured from surplus crusher dust and used as a replacement for natural sand. Diane Gardner, Martins Pilegis and Bob Lark explain. Subscription required.

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