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Article Excerpt
Sensors in the system
by Brian Cox
Terex SHM chooses magnetostrictive technology for durability, reliability
To be competitive in today's volatile energy market, mineral developers continuously seek out innovative technologies that reduce production costs and increase profitability. Highwall mining, a system that extracts coal reserves lying beyond the reach of conventional surface mining operations, is a profitable method of coal extraction. A remotely controlled continuous miner extracts the coal and conveys it through augers or chain conveyors to the outside for stockpiling and transporting. The result is substantially less capital cost and reduced lead time.
Located in Beckley, WV, in the heart of the Appalachian coal fields, for the past 10 years Terex SHM (formerly Superior Highwall Miners) has manufactured machinery for many of the world's most successful and productive highwall mining operators. SHM works with mine operators to evaluate the coal seam, estimate production costs and, later, train personnel to operate and maintain its highwall miner.
SHM had determined that the string pot encoders, pressure switches and infrared switches used in its machines were less efficient and more costly than customers wanted. After exploring available solutions, SHM replaced these parts with magnetostrictive sensing technology.
The mining machine
The Superior highwall mining system is a self-contained, productive, cost-efficient coal mining machine. The system is operated and maintained on the surface. At no time does any crew member go...
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