Coal Age

SEP 2013

Coal Age Magazine - For nearly 100 years, Coal Age has been the magazine that readers can trust for guidance and insight on this important industry.

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gateroad development continued The stability of the machine and Sandvik's cutting technology allows the same efficient coal cutting process to be used in harder cutting conditions, such as sandstone intrusions. Hydraulically controlled sump-in action on the cutterhead from a stabilized machine reduces the damage to the mine floor. An integrated system with ducts, curtains and water sprays controls dust at the face. During the last year, a special emphasis has been placed on mine safety. Sandvik has made ergonomic improvements to the machine based on mine accident statistics from around the world. Improved lighting reduces the potential for tripping hazards. The size of operator platforms has been greatly increased and the controls are displayed in a much more ergonomic fashion. In fact, Australians are now using automated push-button controls for the bolters. The data coming from these control systems can be used to map the roof and create a strata profile. About 20 years ago, Sandvik developed the wet-head spraying system for its roadheaders. Learning how different configura- September 2013 The MB 610 now offers more space on the roof bolting deck and better lighting. tions operated, they modernized and simplified the system. The new design of water spray bars behind the cutter-head provides efficient dust suppression and improved methane ignition protection. Different spray configuration systems are available. For example, the incentive temperature protection (ITP) system or a combined water plus compressed air system reduces water consumption. Adapting to U.S. Needs In the U.S., the bolter miner was introduced as the ABM 14 in the late 1990s. The www.coalage.com 31

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