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Use of reflector buttons for danger, warning, direction, and safety signs in mines

Comparison of trip lights and reflectors

Published Year

• 1930-1939 (1)
• 1960-1969 (1)

Subject

• Reflectors (Safety devices) (2) *
• Mine safety (1)
• Signal lights (1)

Author

• Griffith, F. E. (1)
• Hood, R. A. (1)
• Mitchell, D. W. (1)
• Oitto, Richard H. (1)
• Stears, J. H. (1)
• Van der Veer, H. J. (1)

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