Date nails were tagging devices utilized by railroads and utility companies to visually identify the age of railroad ties or utility poles. Octave Chanute, railroad and aviation pioneer, is credited with the idea for using date nails as a way of tracking the life of railroad ties.
Date nails were tagging devices utilized by railroads and utility companies to visually identify the age of railroad ties or utility poles. Octave Chanute, railroad and aviation pioneer, is credited with the idea for using date nails as a way of tracking the life of railroad ties.
Source: Wikipedia "Date nail" · CC BY-SA 4.0
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