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wide. Powered by a 30-kW electric motor, it has a 0.5-m 3 bucket and can carry up to 1 mt. At the other end of the range, the 1.2-m-wide, diesel-powered L150D can be fitted with 0.6- to 0.8-m 3 buck- ets, with a maximum load of 1.4 mt. New Versions and Special Designs Since being founded in 1964, the German company GHH Fahrzeuge has developed a product range that includes LHDs and underground dump trucks, plus drills and bolters in cooperation with its subsidiary, MineMaster. The company's managing director, Mortimer Glinz, said its product range includes machinery from simple technology to hydrostatic machines and super-low- profile loaders. GHH Fahrzeuge's current portfolio includes about 15 different diesel- and electric-driven LHD models as well as various custom-made and special vehi- cles, such as scaling rigs. Super-low- profile loaders (its "SLP" product range) with a machine height of down to 1.5 m can operate in heading heights of less than 1.7 m. Glinz said that the African market in particular has shown high demand for its compact LHDs for narrow-vein and low-height applications. Recent developments have included a new revision of the compact (length 7.7 m, width 1.8 m, height 2.2 m and a 4.5-mt payload) LF-5 LHD, which is currently in production. The design now features a water-cooled Deutz engine complying with Tier 3 emission stan- dards, while a Tier 4i/f Deutz engine is an available option, significantly reduc- ing required ventilation rates. Glinz added that besides the MK- A15 compact dump truck (15-t payload, 8.3-m length, 1.8-m width and 2.4-m height above the driver's canopy), a new revision of the MK-A20 dump truck (payload 20 t) with different dump box options has recently been developed. It features ROPS/FOPS certification and a Tier 3-compliant, water-cooled Cummins engine, as well as various ergonomic improvements, he said. The MK-A20 shares the same platform as the MK-A5m 3 Mixer, a compact, highly versatile concrete mixer. According to Glinz, in 2012 GHH faced a new challenge when a Chinese contractor wanted a pair of narrow-vein LHDs for a hydro-power plant in Ecuador. Although the initial design called for a 6 m x 6 m tunnel profile, 16.3 km long, cost pressures resulted in the profile being reduced to 5 m x 5 m. A further constraint was that only two working faces were allowed, without any sidewall niches for loading, so the only option was a narrow-vein LHD equipped with a side-tipping bucket. In addition, the customer required a super-simple machine, as the condi- tions on site were somewhat basic. GHH offered LF-5s. With a lead time of 32 E&MJ; • MARCH 2014 www.e-mj.com N A R R O W V E I N M I N I N G GHH Fahrzeuge's 4.5-mt-payload LF-5 LHD now features a water-cooled, Tier 3-compliant Deutz engine, with a Tier 4i/f Deutz engine as an option. Aramine's miniDriller, pictured here, is a kit that can be mounted on the company's L130 LHD in place of the bucket. EMJ_pg28-37_EMJ_pg28-37 2/28/14 3:10 PM Page 32