Engineering & Mining Journal

JUN 2014

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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138 E&MJ; • JUNE 2014 E Q U I P M E N T G A L L E R Y www.e-mj.com Boart Longyear has introduced its BLH series of down-the-hole (DTH) hammers and bits for almost all DTH applications, including geotechnical drilling, quarrying/ mining, water well/geothermal, and mineral exploration. The BLH DTH hammer range includes the valved BLH5, BLH3, and the valve-less BLH1 models. Designed to be compact, the BLH5 hammer is 30% short- er and weighs 20% less than typical DTH hammers, according to the company. De- sign benefits include balanced operation with minimized vibration due to the piston in the hammer having virtually the same mass as the bit; better productivity in vari- ous ground conditions from high frequency, low vibration operation; elimination of problematic exhaust tubes or foot valves on bits; and resistance to breakage through the splines with a 50% larger shank cross section than comparable units. The BLH3 DTH hammer range, said the company, adds a reliable and robust steel valve sys- tem to increase productivity over valve-less hammers. The valve-less BLH1 DTH ham- mer range balances simplicity and per- formance, with minimal moving parts. Boart Longyear DTH hammers range from 4 in. to 20 in., with a full complement of bits available. Boart Longyear also offers accessories including lubrication systems and break-out benches. www.boartlongyear.com Upgraded D9 Dozer Has Many Improvements Cat's D9T bulldozer has new features in- tended to enhance performance, produc- tivity, operator convenience and safety, and serviceability. The new version features a Cat C18 ACERT engine, which meets Tier 4 Final/Stage IV emissions standards and delivers 436 net horsepower (325 kW) at 1,800 rpm. High torque rise of 36% en- ables the dozer to power through tough material. A new high-efficiency cooling package, advanced electronic controls for the power train and implement hydraulics, quieter cab with enhanced information monitoring, and safety and serviceability refinements are major features on the new machine, which retains its predecessor's popular features such as a durable main- frame with cast-steel main case; pivot shaft that transfers blade loads directly to the mainframe; modular drive train with three-speed power-shift transmission and differential steering system; heavy-duty undercarriage with track roller frames and bogie-suspended rollers; a wide selection of blades; intuitive controls; and expansive visibility. The previous D9T model is still available in less regulated countries and can achieve emissions levels equivalent to Tier 2 and Tier 3 standards. www.cat.com Mineral ID Software Offers Batch Processing Spectral Evolution said its EZ-ID software running on an oreXpress portable spec- trometer is an ideal solution for fast, accu- rate mineral identification in the field, matching an unknown mineral against a known spectral library—with the USGS and SpecMIN libraries available. EZ-ID now fea- tures a new batch mode capability that allows geologists to save scan files in a Microsoft Excel spreadsheet format, a comma separated file, or a tab delimited text file. Batch processing is frequently used to format scans for use with other third-party mining software; for example, geological modeling or mine planning. By default, the output file will show the miner- al matches for the spectra with the five highest match scores. Or, users can set out- put to specify the number of scores select- DTH Hammers are Compact, Lighter and More Durable EMJ_pg138-141_EMJ_pg138-141 6/2/14 5:09 PM Page 138

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