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Results 1 - 2 of 2 for Speech communication system
  • Supplier Profile
    Davis Derby is a long established designer and manufacturer of intrinsically safe electronics and explosion-proof electrical equipment. All our equipment is designed for use in underground coalmining...
  • News - 18 Mar 2013
    A new National Academy of Sciences report identifies tools that would help miners devise their own means of escape when trapped underground. In part, the report suggests that The National Institute...

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