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The meaning behind those colorful balls on power lines
KETRACO on Twitter: "Ever wondered what are the balls that hang on power lines? They are called visibility marker balls. You'll often find them near mountain passes, in the deep valley areas,
Marker Balls on Power Lines Enhance Safety | San Diego Gas & Electric - NewsCenter
What Are Those Big Colorful Balls You See On Powerlines? | IFLScience
What Are Those Balls That Hang On Power Lines - Engineering Discoveries
The Reason Behind Those Brightly Colored Balls Along Power Lines | Mental Floss
What are those colourful Aerial marker balls on power lines?
What are the Colored Aerial Marker Balls on Power Lines For?
What Are the Red Balls on Power Lines? | Sciencing
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What are those colourful aerial marker balls on power lines? Why are they used? - Quora
What Are Those Colorful Balls That Are Attached To Power Lines? » Science ABC
How They Install Those Orange Balls on Power Lines From a Helicopter - Core77
What Are Those Colorful Balls on Power Lines, Exactly?
Six Orange Balls | Marker balls hanging from high voltage po… | Flickr
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What's With The Orange Balls That Hang From Power Lines In Colorado's Canyons? | Colorado Public Radio
