Contractors World
 

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Contractors World - 2014 Vol 4 No 5

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Six In Line at Limestone Quarry
Six In Line at Limestone Quarry

Willowtree Site Services, established in 2001 and based in the north-east of England, is a contract crushing and screening specialist.  Working at Coxhoe Quarry in County Durham in partnership with owners and operators, Hope Construction Materials, it is Britain’s leading independent producer of cement, concrete and aggregates.

Reliable equipment and confidence in the suppliers is one reason why Willowtree has been a Blue Machinery Scotland customer since the company bought its first Powerscreen rinser a couple of years ago. 

During the past few months, Willowtree has made a major investment with Blue purchasing six Powerscreen crushing and screening plants. These productive, crawler-mounted, mobile machines are now working the top bench at Hope’s Coxhoe Quarry, crushing, screening and stockpiling around 350,000 tonnes a year of size-specified limestone aggregates and agricultural lime.

Six Powerscreen units inline at Coxhoe Quarry

The Powerscreen set-up at Coxhoe is comprised of a Premiertrak 400 jaw and 1000 Maxtrak cone crusher, three Chieftain 2100X and one Warrior 1800 screening plants. Working largely in tandem, the Powerscreen array is producing 10 mm, 14 mm and 20 mm aggregates and 2 0mm+ oversize from the quarried stone.  This is produced on demand for the civil engineering and construction markets, plus 4 mm lime for soil enhancement for agriculture. The initial contract for Willowtree Site Services is for two years with potential for extending this further.

The high capacity Powerscreen Chieftain 2100X and Warrior 1800 screening plants are well-established and site proven machines with output potentials up to 600 and 400 tonnes per hour respectively which, of course, depends on feed size, mesh size and material type.

On sites where plant has to be moved or reconfigured, time is important so the faster plant can be moved and put back into production the better.  Willowtree find the Powerscreen solution ideal.  Agile and mobile on site, with heavy-duty crawler tracks and a removable pendant remote control system, both models have quick set-up times, easily accessible engines and screen media for maintenance convenience and screen changes, hydraulically folding conveyors and high-performance hydraulics for optimum output.

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