Ключевые слова: alert, announcement, asbestos, asbestosis, barrier, cancer, cancerous, carcinogen, caution, cement, communication, concrete, danger, dangerous, disease, dust, environment, exclamation, fence, fiber, hazard, health, illness, line, mark, message, nobody, notice, pollution, removal, restricted, risk, roof, safety, sign, signage, site, strip, stripe, tape, text, toxic substance, toxic waste, unhealthy, unsafe, yellow,