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Ash left over from burning household waste
Yellow warning sign sayin slippery surface
Electrical Hazard Sign. Dangerous voltage. Life threatening.
Area Closed Warning Sign for Chemical Spill Clean-up, Dangerous Zone, Part of Steps for Dealing with Chemical Spillage, Spill Clean-up Procedures.
Orange toxic smoke from flames or fires of warehouses and industrial building at night. Burning house or adjacent area requiring the arrival of fire and rescue personnel due to fire safety violations.

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