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- Proximity detection systems
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9/1/2001 - Conference papersNIOSH has developed a patented active proximity warning system called HASARD (Hazardous Area Signaling and Ranging Device) which employs low-frequency, low-power magnetic fields which are quite impervious to severe environmental conditions.
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2/1/2001 - Conference papersNIOSH has developed an active proximity warning system called HASARD (Hazardous Area Signaling and Ranging Device) for warning workers as they approach known dangerous areas around heavy mining equipment and other dangerous work zones.
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Content source: National Institute for Occupational Safety and Health, Mining Program