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Telecontrol is a technology providing Significant safety improvements in mining, by relocating machine operators hundreds of meters away from the immediatefiealth and safety hazards. The U. S. Bureau of Mines recently developed and patented a telecontrol system for underground room-and-pillar mining. This system features near-real-time closed~loop control. A demonstration system was constructed that can be wed in thin-seam applications down to 914 mm. Details are provided on the developed telecontrol system, with the emphasis placed on the programmable logic controller-based electronic control system.

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