Quizzes & Puzzles1 min ago
orange roofs
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what is the purpose of the poles with fluorescent orange roofs you see on the side of fields?
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For more on marking an answer as the "Best Answer", please visit our FAQ.I work for a company that specialises in the environmental assessment of cross-country pipelines and I am reliably informed that they mark underground pipelines - specifically major changes of direction. Orange hats indicate gas pipelines, white with a black stripe = oil. They allow helicopters to follow the route.