Ключевые слова: abstract, backgrounds, blue, box, burning, care, chemical, closeup, computer graphic, danger, dirty, emergency sign, exploding, fire, flame, flammable, grunge, hazardous area sign, heat, industry, iron, label, metal, old, red, risk, rundown, rusty, safety, sign, stained, symbol, textured, torn, warning sign, warning symbol, weathered,