< PreviousH yundai Construction Equipment has introduced two articulated dump trucks (ADTs) to its line of heavy construction and earthmoving equipment. The HA30A and HA45A ADTs have rated payloads of 28 tonnes and 41 tonnes, respectively, providing a haul truck match for Hyundai’s larger crawler excavators and wheeled loaders. Hyundai is entering the articulated dump truck market with two models that use proven technology to deliver high productivity and mobility on site. Aimed at the popular 30- and 45-tonne sectors, the HA30A and HA45A are built around a full-time six-wheel-drive concept, with front and rear limited slip diff erentials and a longitudinal diff erential that can be manually locked, for maximum drive and traction on diffi cult terrain. HYUNDAI CONSTRUCTION EQUIPMENT ENTERS ARTICULATED DUMP TRUCK MARKET The trucks have a compact chassis design to aid manoeuvrability, with a sloping rear frame and a front-mounted diff erential integrated into a ZF transmission, allowing for a shorter front frame section. This results in the smallest turning radius in the sector and high stability. Self-levelling hydro-gas suspension on the front axle further supports a comfortable ride, delivering maximum tractability in tough ground conditions. The turning ring is mounted in front of the chassis articulation point, resulting in an equal weight distribution to the front wheels in all driving situations, for increased stability and traction. Having equal weight distribution allows the operator to use the limited slip diff erentials with just a 45 degree locking value, maintaining drive to both front wheels even when steering. The two rear axles employ a tandem-bogie- drive design, with a single central diff erential and twin internal gear drives on each side of the truck. These tandem reduction gearboxes rotate in total by almost 40 degrees, allowing maximum oscillation of the rear axles to maintain ground contact on rough terrain. The single central diff erential increases ground clearance beneath the truck. The HA30A and HA45A ADTs are equipped with a full hydraulic retarder, combined with an electronic engine brake as standard. This supports the oil-cooled wet disc brakes to achieve an extended service lifetime of up to 15,000h. A hydraulically-activated mechanical parking brake holds the machine when stationary. The trucks are supplied with a gradient meter, with fl ip-over protection and a ‘body over centre of gravity’ function, DUMP TRUCKS 10 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 2022to assist drivers when tipping and operating on rough terrain. The sloping rear chassis section evenly spreads the load between the front and rear axles. The HA30A has a 16.8m3 heaped body capacity, which rises to 17.8m3 with a tailgate fi tted. The larger HA45A off ers a 24.4m3 heaped capacity, rising to 26.0m3 with a tailgate. Both dump bodies can be optionally heated by the engine exhaust gases, to prevent freezing and sticking of materials when operating in colder temperatures. Internal wear plates are available as an option for hard rock use. Hyundai has employed powerful EU Stage V-compliant Scania diesel engines to power both the trucks. The HA30A uses a fi ve- cylinder, 9.3-litre, DC9 turbocharged diesel, developing 375hp (276kW) and 1,876Nm of torque. The larger HA45A employs a six-cylinder, 12.7-litre DC13 diesel engine, producing a maximum 500hp (368kW) and 2,476Nm of torque. Both engines drive through eight-speed ZF automatic transmissions, with integrated retarders. The torque converter has lock-up in all gears, reducing fuel consumption and increasing effi ciency. Fuel, AdBlue diesel engine exhaust fl uid and a standard auto- lube greasing system can all be easily accessed from ground level, for improved site safety. The engine canopy tilts forward for access to fi lters and fi ll points, while the complete cab structure can also be tilted towards the rear of the truck to provide access for repair and maintenance. Hyundai’s Himate telematic monitoring system is fi tted as standard, with satellite and GSM connectivity to help reach inaccessible construction and mining sites. This allows customers to remotely monitor productivity, fuel consumption, system warning and maintenance status, reducing unplanned downtime and improving fl eet utilisation. With an ROPS/FOPS cab, the ADTs feature an ergonomic layout to the controls, which are accessible from the air-suspended operator’s seat. The specifi cation includes an MP3 and Bluetooth-compatible radio, USB charger, all-round safety rails and a foot rest. There is suffi cient storage around the cab interior, with room for an optional cool/hot box and 12V power sockets for operator phones and other accessories. Full cab climate control is standard on both the models and the cab has an internal sound level of 72dB(A) to provide comfort throughout the working day. The sloping bonnet provides a view of the front of the truck, and there are sliding side windows with hand rails to the side of the seat. A comprehensive monitor panel provides an integrated payload meter to prevent overloading and to record productivity. Diagnostic functions are included within the monitoring system and the operator can remotely check hydraulic and transmission oil levels from the cab. A gradient meter ensures that the truck is driven safely within its limits, while an integrated rear-view camera and large mirrors provide all-round visibility when reversing under an excavator or into the tipping area. Hyundai has designed the HA30A and HA45A ADTs to work alongside a wide range of crawler excavators and wheel loaders in earthmoving projects, highway construction and mine and quarry operations. The two ADTs are the fi rst visible sign of the new cooperation between Hyundai Construction Equipment Europe (HCEE) and Hyundai Doosan Infracore (HDI), since the purchase of the Doosan business last year by Hyundai Heavy Industries Group. HCEE and HDI now operate as separate divisions within Hyundai Genuine, maintaining their independent management and dealer network structures. The two companies will develop integrated platforms for excavators and wheel loaders, and their further technological integration will create natural synergies in research and development, design, engineering, procurement and manufacturing. DUMP TRUCKS 11 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 2022 v35% improved tyre life.” Autonomous trucks equipped with Command for Hauling are operating at 18 mine sites by 10 companies across three continents. Commodities autonomously hauled include iron ore, oil sands, copper, coal and gold. Spanning the 190- to 360-tonne (210- to 400-ton) class sizes, the portfolio of Cat mining trucks capable of fully autonomous operation include the 789D, 793D, 793F, 797F and 794 AC with electric drive. Retrofit kits allow mining operations to expand Command for Hauling to existing Cat mining trucks as well as other brands of trucks and loading equipment in their fleet. Sean McGinnis, general manager, Cat Mining, said: “We continue to explore new avenues with Command for Hauling to make strides toward the fully autonomous mine site and recently surpassed a major milestone of more than 500 autonomous trucks. Our previously announced collaboration with Newmont will introduce up to 16 autonomous trucks through 2023 at the company’s Cripple Creek and Victor mine in Colorado with plans to transition to haulage fleet electrification, supporting Newmont’s target of reducing greenhouse gas (GHG) emissions by more than 30%. We currently have in progress high-altitude and new product introduction projects for the smaller 89-tonne size class. We have also expanded our Command system to Cat water trucks for haul road dust control at the mine.” The Command hardware and technology is currently deployed on the Cat 789D autonomous water truck (AWT) at Rio Tinto’s Gudai-Darri mine in Australia, the world’s first AWT. Connected with Cat MineStar technology, Command for Hauling on the 789D integrates the truck, tank and water delivery system (WDS). The Cat WDS delivers variable waterflow based on truck speed, and the system’s variable displacement pump automatically starts and stops when the truck slows or comes to a halt, preventing overwatering and poor traction at intersections. C aterpillar dump trucks equipped with Cat MineStar Command for Hauling technology moved roughly 1.2 billion tonnes of material autonomously in 2021, creating a new record in the mining industry. Since 2013, Cat trucks with Command for Hauling have autonomously and safely hauled more than 4 billion tonnes of material, and to date, trucks equipped with Caterpillar’s autonomous haulage system (AHS) have travelled more than 147 million km with zero loss-time injuries. Marc Cameron, vice president, Caterpillar Resource Industries, said: “Safety and sustainability continue to be top values in the mining industry. We are now entering our ninth year with zero loss-time injuries with Command for hauling, a testament to its safety record. A recent five-year study by one of our customers autonomously hauling iron ore reported an 11% reduction in fuel usage – resulting in a 4300 tonne-per-year (4,740 TPY) CO2 emissions reduction – 11% increase in hourly production, 50% higher maximum truck travel speed, and CATERPILLAR HAULS MORE THAN 1 BILLION TONNES OF MATERIAL AUTONOMOUSLY IN LESS THAN A YEAR DUMP TRUCKS 12 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 2022KOMATSU TO DEPLOY AUTONOMOUS HAULAGE SYSTEM AT COPPER MINE IN CHILE K omatsu plans to deploy its FrontRunner autonomous haulage system (AHS) on 62 units of the Komatsu 930E ultra-class haul trucks at the Los Bronces copper mine in Chile by 2024. Los Bronces is an open-pit copper and moly mine owned by UK-based multinational mining company Anglo American. The mineral that is extracted is ground and transported by a 56-kilometer pipeline to the Las Tórtolas fl otation plant, where copper and molybdenum contained in concentrates are produced. The mine site will serve as a showcase for Komatsu’s autonomous technology. The Komatsu FrontRunner is a well-proven system, with over 525 trucks deployed since its fi rst commercial deployment in 2008 at Codelco’s Gabriela Mistral copper mine in Chile. Komatsu’s approach for FrontRunner AHS brings together its ultra-class dump trucks with the Modular Mining Dispatch fl eet management system which provides mines with end-to-end monitoring of production and auxiliary equipment. Cristobal Mimica, mine modernisation manager at Los Bronces, said: “We’re excited to participate in this initiative to implement autonomous technology and look forward to the opportunity to leverage FrontRunner AHS to help us optimise our mine operations at Los Bronces, convinced that technology is an enabler to improve the way we work and move toward a safer and more sustainable operation, where people are the protagonists of innovation and are at the centre of everything we do.” Anthony Cook, vice president for autonomous systems at Komatsu, said: “FrontRunner AHS is designed to help mines increase production while promoting zero harm. We’re pleased that Anglo American, a long-time partner, has chosen FrontRunner to help achieve their goals and we look forward to continuing to collaborate on future optimisation opportunities.” Komatsu’s FrontRunner trucks are typically loaded by conventionally operated manned loading tools such as shovels or front-end loaders hauling either overburden to waste dumps or paddock dumps for spreading, or mined resources to the crusher area. Each truck incorporates a combination of vehicle controllers, precision GPS, an obstacle detection system (ODS) using radar and laser, and a wireless network system developed by Komatsu. The truck’s vehicle control system incorporates a detailed map of the mine area, including haul roads, loading areas, dump areas and refuelling and maintenance areas. The mine’s central controller assigns required routes to each truck, whether overburden hauling or ore hauling. Each loading tool is fi tted with an integrated touch-screen computer showing the location, direction of movement and speed of all items of mobile plant within the FrontRunner fl eet’s operations area. As each truck approaches the loading area, the loading tool operator uses their on-board touch-screen computer to “spot” the truck to the correct loading location, “telling” the truck when it can move into position to be loaded, then once it is loaded that it can move off to the dump area. In dumping, the autonomous system is able to handle the diff erent requirements of the mine, depending on the material to be dumped, whether to fixed crusher plant locations for mined ore or to overburden waste dumps. DUMP TRUCKS 13 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 2022 The Volvo A30G articulated hauler is made from fossil-free steel provided by SSAB V olvo Construction Equipment (Volvo CE) has delivered the world’s fi rst construction machine built using SSAB fossil-free steel to Sweden-based construction company NCC. The Volvo A30G articulated hauler will operate in NCC’s quarry in Sweden where it will help to produce stone materials for new roads, infrastructure and construction projects. The handover of the Volvo A30G comes nine months after Volvo unveiled the world’s fi rst vehicle concept using fossil-free steel, as part of testing the implementation in an ordinary production setup, and just ten FOSSIL-FREE STEEL AND FUEL CELLS EXPAND SUSTAINABILITY OPTIONS FOR VOLVO ARTICULATED HAULERS months after SSAB showcased the fi rst steel ever made using hydrogen instead of coking coal. Martin Lindqvist, CEO and president of SSAB, said: “This is a step change in the green transition, showing in practice that it is possible to build partnerships and create fossil-free value chains that will help mitigate climate change. I am happy and proud to collaborate with Volvo Group and NCC as forerunners in decarbonisation. Together, we hope to inspire others, so that we strengthen the competitiveness of sustainable solutions and enable the objectives of the Paris agreement.” Melker Jernberg, president of Volvo CE, said: “We are sure that to succeed in decarbonising the construction industry, actors in the value chain will need to collaborate and act. Thanks to our strong partnerships with other driven and forward-thinking companies, we are now able to lead the change towards fossil- free construction and be the fi rst to deliver a machine built using fossil-free steel to a customer. Turning commitments into actions is key to building the world we want to live in.” Tomas Carlsson, CEO and president of NCC, said: “NCC has a fi rm commitment to DUMP TRUCKS 14 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 2022 Volvo CE has started testing its fuel cell articulated hauler prototype, the Volvo HX04, in Sweden contribute to sustainable development. We are working determinedly and systematically to reach that target, which includes selecting machines that live up to our high demands. As demonstrated in this great example, it takes strong and proactive partnerships between several players to make the sustainable shift possible.” In the summer of 2021, SSAB produced the world’s fi rst steel made from sponge iron reduced by hydrogen gas on a pilot scale. SSAB plans to off er fossil-free steel at an industrial scale to the market as early as in 2026 and aims to largely eliminate carbon dioxide emissions from its own operations in around 2030, 15 years ahead of previous plans. Volvo CE aims to achieve net-zero greenhouse gas emissions by 2040. Alongside the electrifi cation of its machines, the company recognises the importance of reducing its carbon footprint across its entire value chain. This includes the raw materials used in its products, of which steel is a major component. The production using fossil-free steel in Volvo CE’s machines and components will be gradual and depend on aspects such as steel availability. HYDROGEN-POWERED PROTOTYPE The Volvo HX04 fuel cell articulated hauler prototype is the result of a research project running between 2018 and 2022, with funding from FFI, a national collaboration between the Swedish Innovation Agency Vinnova, Swedish Energy Agency, and Swedish Transport Administration to support sustainable vehicle strategic research, innovation and development. Partners include Volvo CE and Research Institutes of Sweden (RISE), who provided specialist competence on driveline development and safety, and PowerCell Sweden, a developer of fuel cell-based hydrogen-electric power solutions. The development and building of the six- wheel prototype has largely been carried out at Volvo CE’s facility in Braås, Sweden, the same location where Gravel Charlie, the world’s fi rst articulated hauler, was born back in 1966, giving the Volvo HX04 the nickname ‘Electric Charlie’. Engineers at the Technology Center in Eskilstuna, Sweden, have contributed with software development and knowledge gathered through its fuel cell test lab. While not commercially available, valuable insights from the concept will inevitably inform future production. The Volvo HX04 can be charged with 12 kg hydrogen in approximately 7.5 minutes, enabling it to operate for approximately four hours. A hydrogen refuelling station has been installed by Shell at the Volvo CE test track in Braås. Both Shell and Volvo Group are founding members of H2Accelerate, a collaboration of companies working to foster conditions for the mass market roll-out of hydrogen trucks in Europe. Carolina Diez Ferrer, head of advanced engineering programs at Volvo CE, says: “Being inventors of the world’s fi rst articulated hauler more than 55 years ago, we are happy and proud to again drive change with this fuel cell hauler concept. While an early prototype, this innovation will give valuable insights into the opportunities of hydrogen in the energy transformation alongside battery-electric solutions. We believe that by exploring multiple technologies and working in partnership we can create the best path forward to decarbonise the construction industry.” DUMP TRUCKS 15 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 2022I nternational mining company Anglo American has unveiled a prototype of a 510t hydrogen-powered mine haul truck designed to operate in everyday mining conditions at its Mogalakwena platinum group metals (PGMs) mine in South Africa, the world’s largest open-pit platinum mine. The 2MW, 220t hydrogen-battery hybrid truck generates more power than its diesel predecessor and is capable of carrying a 290-tonne payload. The prototype testing is part of Anglo American’s nuGen zero emission haulage solution (ZEHS) which aims to provide a fully integrated green hydrogen system, consisting of production, fuelling and haulage system, with green hydrogen to be produced at the mine site. nuGen is part of FutureSmart Mining, Anglo American’s approach to sustainable mining which brings together technology and digitalisation to drive sustainability outcomes, including the company’s commitment to carbon-neutrality across its operations by 2040. For the nuGen project, Anglo American worked with companies such as Engie, First Mode, Ballard and Nproxx to design, build, and test a 1.2MWh battery pack, as the haul truck system uses multiple fuel cells that deliver up to 800kW of power, combining to deliver a total of 2MW of power. The partners designed and implemented a software solution to safely manage power and energy between the fuel cells, batteries, and vehicle drivetrain. They developed the power management and battery systems from the ground up, enabling them to tailor the system to each mine and improve overall efficiency by designing in energy recovery as the haul trucks travel downhill through regenerative braking. The nuGen truck is retrofitted from a diesel-powered vehicle. The truck uses a hybrid hydrogen fuel cell providing roughly half of the power and a battery pack the other half, to allow energy recovery from braking. Hydrogen enters the fuel cell from the tank and mixes with oxygen to create water in a chemical reaction catalysed by platinum. This generates electricity that is used to power the motors that drive the wheels. The only emission from the vehicle is water vapour. The 2MW hybrid battery/hydrogen fuel cell power plant, which replaces the diesel RETROFITTED BATTERY-FUEL CELL HYBRID MINING TRUCK UNDERGOES TESTING AT PLATINUM MINE IN SOUTH AFRICA DUMP TRUCKS 16 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 2022engine installed, has been designed by Anglo American and First Mode in Seattle, USA. The power management and battery systems in the truck have been developed to improve overall efficiency by recovering energy when the haul trucks travel downhill, through regenerative braking. By harvesting the regenerative energy created when driving downhill, the need for external energy is reduced. This energy, stored in the battery, together with the hydrogen extends the truck’s range and reduces the out of cycle time for the trucks, since hydrogen refuelling is significantly faster than recharging batteries. Engie has developed an integrated hydrogen solution that includes hydrogen production, compression, storage and distribution from local solar energy, and supplying the fuel for the haul truck. A hydrogen production, storage and refuelling complex has been installed at Mogalakwena that incorporates the largest electrolyser in Africa and a solar PV field to support the operation of the haul truck. Anglo American plans to retrofit 40 diesel haul trucks at Mogalakwena to hydrogen truck vehicles as part of the nuGenM project. Subsequently, the company expects to roll this technology out across its global fleet of around 400 trucks. Duncan Wanblad, chief executive of Anglo American, said: “nuGen is a tangible demonstration of our FutureSmart Mining programme changing the future of our industry. With diesel emissions from our haul truck fleet accounting for c.10-15% of our total Scope 1 emissions, this is an important step on our pathway to carbon neutral operations by 2040. The mining industry is playing a considerable role in helping the world decarbonise, both through our own emissions footprint and the metals and minerals that we produce that are critical to low carbon energy and transport systems. “Over the next several years, we envisage converting or replacing our current fleet of diesel-powered trucks with this zero-emission haulage system, fuelled with green hydrogen. If this pilot is successful, we could remove up to 80% of diesel emissions at our open pit mines by rolling this technology across our global fleet.” CONSTRUCTION IN MENA WILL FACE DOWNTURNIN2020 DUMP TRUCKS 17 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 2022W hile technology has been enhancing excavator performance for more than a decade, end-user demand for certain features has accelerated in the past few years. Experts from the CONEXPO-CON/ AGG expo and the association of equipment manufacturers (AEM) talk with leading manufacturers to get their take on innovations that provide the typical construction company with the best bang for their buck and allow excavator operators to dig and grade faster, eliminate guesswork, reduce fuel consumption, enhance operator comfort and improve safety. 1. GET TO GRADE IN CONSIDERABLY LESS TIME Ryan Neal, market professional and product application specialist for large excavators at Caterpillar, says 2D grade control has been a game-changer. The operator simply selects target depth and slope, and sensors and onboard processors provide real-time guidance on the distance to grade. That eliminates all of that in and out of the cab to set up stakes and lasers, oftentimes slicing an operator’s productivity in half. Matthew Mclean, product manager for GPE products at Volvo Construction Equipment, says interest in 2D indicate systems has exploded over the past two years. Demand was initially driven by the typical contractor’s desire to save time. More recently, it is all about the industry-wide challenge of fi nding skilled workers. “A newer operator might not be as fast, but at least they’ll be on grade because the monitor screen in the cab will let them know both visibly and audibly,” McLean points out. “Volvo’s system, Dig Assist, is also designed to be easy to use, which is why we’ve made it standard on our 22- to 55-ton excavators. On virtually all other models, Dig Assist is an option.” 2. SEMI-AUTONOMOUS DIGGING AND GRADING Volvo calls its system Active Control and off ers it as standard equipment on fi ve excavator models: the EC220E, ECR235E, EC250E, EC300E and ECR355E. “We’ve gone electric- over-hydraulic in the controls because we now have joysticks talking directly to computers and the valve and pump,” McLean explains. “When active control is turned on, once you get within a window of 4 inches (10 cm), you can just FIVE EXCAVATOR TECHNOLOGIES DEVELOPED TO IMPROVE THE BOTTOM LINE INSIGHT 18 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 20224. HIGHER PRODUCTION, LOWER FUEL CONSUMPTION With the right equipment and technologies, improved productivity can also result in reduced fuel costs. Doosan excavators feature two innovations that can reduce machine fuel consumption. The D-Ecopower system, an option on select models, features an electronically controlled pump, a closed-center main control valve, and nine sensors that electronically detect and control the precise amount of hydraulic oil required to perform a task. “The exact amount of oil required is metered instead of a fixed amount continuously being forced through the system,” says Aaron Kleingartner, product and dealer marketing manager for Doosan Infracore North America. “The hydraulic system output requirements are optimised with engine horsepower. The resulting efficiency reduces fuel consumption and improves productivity substantially. Improved feedback through the controls also results in an outstanding level of operator comfort and much smoother machine management.” A second innovation from Doosan is its Smart Power Control. Controlled by the engine control unit (ECU), this technology is implemented through two systems, variable speed control, and pump torque control, that work together to improve efficiency while maintaining productivity. “Smart Power Control can save as much as 5-7% in fuel consumption,” Kleingartner says. 5. CAMERA SYSTEMS Cameras are also taking excavator productivity and safety to another level. For instance, Caterpillar excavators come standard with two cameras, one on the right side and one at the rear. A four-camera system is also an option for contractors that want to maintain a 360° view around the excavator. Over the past fi ve years, Doosan’s Kleingartner says technological innovation has accelerated with respect to cameras. Doosan off ers a standard rearview camera and an optional side view camera. Operators can view one or both (side-by-side) on the LCD screen in the operator’s cab. “At CONEXPO-CON/AGG 2020, Doosan previewed its newest camera system, an all-around view monitoring system (AVM), that gives operators a 360° view of their surroundings,” Kleingartner says. Five unique perspectives can be seen from the separate AVM monitor: top view, rear view, top- right view, rear-corner view, and 3D view. Volvo’s McLean also agrees camera systems have come a long way. The company began adding backup cameras more than a decade ago. Most recently, in 2020, Volvo Smart View was developed and has since been made standard on Volvo general purpose excavators (EC140 and larger). Now the industry is beginning to work on a camera system that warns the operator when certain movement is detected, McLean points out. Additionally, the future of excavator tech is likely to include increased adoption of things like 3D grade control, remote control operation, and even certain levels of autonomous operation. But as of right now, more construction contractors are making better use of game-changing technologies that have been available and continually improved for years. pull back on the arm lever and the computer helps you dig.” At the basic level, active control controls the boom to prevent operators from over-digging. But it can also be set up to control bucket angle and can even control a tiltrotator. Operators can allow the system to control back grading and can also specify if they need to achieve a fi ner or rougher (normal) grade. Finally, functionality such as swing control and swing fence help operators dig and load more effi ciently while avoiding side obstacles. On that note, Caterpillar has made its swing- control technology, 2D E-Fence, standard on its excavators. This safety system uses data from position sensors to automatically stop motion when the front linkage reaches the operator- defi ned boundaries. 3. CALCULATING MATERIAL WEIGHT Caterpillar’s Neal points to one other game- changing technology that has come to excavators in recent years. Cat Payload uses cylinder pressure data and machine sensors to continuously calculate material weight while the excavator works. Neal recalls visiting a contractor in the Boston area recently. The contractor was using a Cat 395 excavator to dig a massive foundation. “The contractor was using both the 2D grade control and the payload system—just as we’d intended for them to be used,” Neal says. “The contractor said they loaded 136 trucks and were within 2% accuracy on all of them. That almost brought a tear to my eye.” INSIGHT 19 PLANT / MACHINERY / VEHICLESwww.plantmachineryvehicles.comJULY 2022Next >