Mining Mirror January 2019 | Page 37

Cradle to grave New equipment exceeds expectations B dependable back-up support and an efficient spare parts service. “We selected Hyundai excavators because of their reputation for high performance in tough operating conditions, impressive fuel efficiency, and minimal downtime. These machines have thus far delivered on all expectations,” says Dabner. The Hyundai R520LC-9S hydraulic crawler excavator, with horsepower ratings of 363kW gross / 255kW net, is now in operation at this site and according to Basil Read, this machine is achieving impressive productivity. The Hyundai R850LC-9S tracked excavator has a Cummins QSX15 engine, with dual overhead cams for optimum performance. Computerised work modes allow the operator to match performance to site conditions. Hyundai machines have been designed for easy refuelling on site, and for easy serviceability and reduced maintenance time, there is ground-line access to critical services and grease points. Also operating at this project are two 22 T Hyundai R220LC-9S tracked excavators that boast a bucket digging force (2m arm) of 133.4kN and are fitted with Hyundai HM 5.9 engines, offering a fuel consumption of only 16.6ℓ/h. These versatile machines, which are self-stabilising due to their weight, provide their own anchor support and can manoeuvre over arduous and steep terrain. Basil Read has secured other contracts in southern Africa, including the extension of a drilling project and a load and haul contract in Limpopo, as well as contracts at copper and zinc mines in Namibia. asil Read’s mining division, specialists in hard and soft rock mining, has extended its fleet of mobile mining equipment with the addition of four new Hyundai excavators, which have been deployed to a diamond mine in Lesotho. “This project, which commenced in February 2018, involves having to move between 600 000 and 700 000 tons of material per month in the first year and thereafter ramping up over time to quantities potentially exceeding one million tons of material per month,” says Anton Cilliers, operational director at Basil Read. “In order for us to meet the project deadline, we have to operate this site 24 hours a day. An around-the-clock operation like this is not a new concept for Basil Read and thus far the Hyundai equipment has exceeded performance expectations. “Challenges at the Lesotho site include steep, muddy, and narrow roads, which are difficult for large machines to be transported on, as well as extreme weather conditions — Lesotho often experiences four seasons in one day, including snow. “The Basil Read team is also mindful in every project to minimise the impact of our operations on the natural environment,” says Cilliers. Clive Dabner, plant director at Basil Read, says that in the plant selection process, the company had to consider certain critical factors: “It is important to match the correct size machine to project requirements; we have to consider budget restraints; and we need to find a reputable supplier with a proven track record that will provide Basil Read has invested in Hyundai R850Lc-9S tracked excavators for operation in Lesotho. www.miningmirror.co.za The key is water management A s climate change becomes more pronounced and new rainfall patterns become more apparent, water management is emerging as the pre-eminent sustainability issue within the global energy and mining resource industries.  With water scarcity becoming a reality, mining companies are faced with numerous civil and environmental pressures and need to proactively review the impact that their upstream and downstream operations are having on the availability and quality of this non-renewable resource. This includes having a deeper understanding of where the mine gets its water from, how it disposes or recycles it, what the water is being used for, potential losses or gains, and the related risks and opportunities — from both a corporate and at an individual operation site level. And, starting to implement innovative solutions that will reduce the mine’s reliance on and usage of water.  One operational area that stands to benefit significantly from innovations that can assist with dewatering, is mineral processing. For instance, there are many instances — and across Africa — where a mineral processing plant has been developed on site, or nearby, but there are no smelters for the beneficiation of the product afterwards. This means that mine companies are paying to transport a product to the beneficiation plant but because it still contains so much water, the company loses out on the cost of the water weight versus tonnage of product transported.  Currently, few traditional centrifugal pumps on the market Continued on page 36 JANUARY 2019 MINING MIRROR [35]