Walk a street or sidewalk and you will quickly trip over Rounds of all types - manholes, vents, pipe covers. This gas pipe cover is in need of some work, planted in the middle of crumbling concrete in a construction site. Spray painted bright yellow you can't miss it. The color identifies it as a dangerous material line, and is one of eight different uniform color codes set by the American National Standards Institute for marking and protecting underground lines during excavations and construction.

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