UNDERGROUND WAGON FOR BLASTED ROCK. World Class Ore Logistics

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1 Highly efficient bottom discharge Handles boulders in sizes up to 1500 mm Commodities: Rock, blasted rock Discharge rate: Up to tonnes/h Low-cost maintenance UNDERGROUND WAGON FOR BLASTED ROCK The heavy-duty Rock Dumper represents more than 30 years of optimisation for narrow spaces and large fractions in the modern underground mines of northern Sweden. The wagon is designed for rolling bottom discharge and has an unloading capacity of up to 17,000 tonnes per hour. The Rock Dumper is capable of handling drop-loaded boulders in sizes up to 1500 mm. To fit your needs, the wagon comes in four standard sizes: from 10 to 25 m³ loading volume. The Rock Dumper offers extreme productivity with the highest possible transport and unloading capacity. Watch our product movies on our YouTube channel kirunawagon World Class Ore Logistics

2 Effective bottom-dump system for large rock fractions and narrow underground spaces

3 SYSTEM PHILOSOPHY When designing for underground ore transport, we aim to limit the expensive rockwork by minimising the required cross-section area of the drift and maximising the loading volume of the wagon. Our proven Rock Dumper has a low bottom and carries its load from deep down between the axles to the highest point of the body. To lower the tare weight of the wagon, we have used ultra-high-strength steels and a high-performance wear plate system developed by LKAB. WRC System is designed for easy plate change-outs and allows us to use wear plates as thin as 10 mm, instead of the usual 25 to 30 mm. The flexibility of the system helps us evaluate and identify precisely the right wear plate for your fraction and mineral. A PROVEN TECHNOLOGY Already in the 1950s, Kiruna Wagon s part owner, Nybergs Mekaniska Verkstad, built underground wagons of this type for the LKAB Kiruna Mine, which presently is the largest and most modern underground iron ore mine in the world. See more on our YouTube channel:

4 Highly efficient bottom discharge Handles angular boulders in sizes up to 1500 mm Low-cost maintenance

5 The Rock Dumper has an unloading capacity of up to 17,000 tonnes/hour World Class Ore Logistics

6 UNDER THE SURFACE This 3D generated image shows the unloading station as seen from below. In the image, the entire bottom of the wagon has opened for a complete discharge of the load in just seconds. The wagon itself is carried on the support wheels while the bottom door follows the discharge curve to open to an angle of 60 before gently closing in a smooth movement. Discharge angle 60

7 OPTIMISED MAINTENANCE In addition to the benefits provided by WRC System, we have a full program for changing and servicing chevrons, bearings and wheels. Below are some examples of our design solutions for optimised maintenance. The wheel of the bottom door is a unique solution designed for easy change-outs and service. The support wheels of the unloading station are designed for easy individual change-outs. The hinge of the bottom door is almost maintenance free, thanks to the use of composite bushings. The rims and tires in the propulsion unit are standard truck components. The hinge technology includes a refined sealing to prevent spillage and excessive wear. Main measurements examples unloading station (mm)

8 Wagon Specifications RD 15/V10 RD 20/V15 RD 25/V20 RD 32/V25 Loading volume 10 m³ 15 m³ 20 m³ 25 m³ Max payload 21 tonnes 29 tonnes 37 tonnes 50 tonnes Tare weight 9 tonnes 11 tonnes 13 tonnes 15 tonnes Max axle load 15 tonnes 20 tonnes 25 tonnes 32.5 tonnes Distance between axles 2500 mm 2500 mm 3500 mm 3500 mm Gauge 1000 mm 1000 mm 1435 mm 1435 mm Unloading capacity 10,000 tonnes/h 14,000 tonnes/h 13,000 tonnes/h 17,000 tonnes/h Length (over couplers) 3500 mm 3500 mm 5000 mm 5000 mm Height 1800 mm 2600 mm 2300 mm 2800 mm Width 2300 mm 2300 mm 2500 mm 2500 mm Speed 25 km/h 25 km/h 25 km/h 25 km/h Coupler height 775 mm 775 mm 880 mm 880 mm Coupler type Automatic Automatic Automatic Automatic Brakes Optional Optional Optional Optional Temperature interval -40 to +60 C -40 to +60 C -40 to +60 C -40 to +60 C Main measurements examples RD 25/V20 (mm) TW GAS 5053