Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr
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E Q U I P M E N T G A L L E RY Kangra Coal Gives Green Light for Yellow Machines Remote-control Crawler Drill At the beginning of 2013, two Eickhoff continuous miners commenced production at South African underground operation Savmore colliery after the owner of the mine, Kangra Coal (Pty) Ltd., commissioned their own mining operations in their 1.8- to 2-m Dundas low seam area. Currently one low profile Eickhoff CM2H-30 and another recently refurbished Eickhoff CM2H-37 are successfully cutting at the Maquasa Adits on a 10-production shifts per week roster and two maintenance shifts per month. Kangra Coal employs about 720 staff and annually extracts approximately 4 million metric tons of raw coal from the operations that are located approximately 60 km west of Piet Retief, Mpumalanga province. www.eickhoffcorp.com moderate to steep slopes and moderate to high load applications, where increased internal shear strength is required. Features of Agru GeoClay include 19-ft (5.8-m) roll widths, claimed to be the largest in the industry and allowing for up to 20% reduction in seams; hydraulic superiority when compared with several feet of compacted clay; high internal and interface shear strength interface for slope stability; self-healing and self-sealing capabilities inherent in its natural sodium bentonite; compatibility with typical MSW leachates and mining solutions; and more efficient installation when compared with traditional compacted clay layers. One truckload of GeoClay covers 0.75 acre. www.agruamerica.com Hütte Bohrtechnik has introduced a selfcontained, fully hydraulic crawler drill rig model. Similar in size to its HBR 203 model, the radio remote-controlled Hütte HBR 202 can be powered by an onboard electric motor or diesel engine, without need for a separate power supply. Although the 202 shares the same undercarriage and telescoping mast as the 203, the HBR 202 also offers unique kinematics resulting from an upper structure that rotates 140° left and right and extends fore and aft 350 mm. Another feature is a new 3-speed low profile rotary head that provides 21,000 ft-lb of torque, with a clearance requirement to the front face of less than 12 in. (305 mm). The telescopic drill mast provides a feed length from 4 to 8 ft (1.2 to 2.4 m) with a feed force of 8,500 lb (38 kN) and pullback of 14,000 lb (62 kN). All drill movements from tramming to mast positioning are "softly"controlled through a 32-gpm loadsensing piston pump. The electric version of the HBR 202 features a 74-hp (55-kW) motor requiring a 440/480-v, 60-Hz, three-phase power source. A version of the 202 equipped with a 100-hp (74.5-kW) diesel engine will soon be available as well. The HBR line has a wide application range that includes overburden and rock drilling, augering, coring, exploration drilling, geothermal drilling and injection drilling. www.casagrandegroup.com/hutte Geotextile Clay Liner has Superior Properties Agru GeoClay is a reinforced needlepunched geosynthetic clay liner (GCL) consisting of a uniform layer of granular bentonite, encapsulated between two nonwoven geotextiles. It is intended for use on 106 E&MJ; • AUGUST 2013 www.e-mj.com