Ключевые слова: alert, area, asbestos, asbestos removal, barrier, black, cancer, caution, clean up, communication, construction, contamination, danger, danger sign, dangerous, demolition, environment, environmental contamination, environmental protection, fence, fibres, hazard, hazard sign, hazard signs, hazardous, hazardous materials, health, health and safety signs, house, industrial, industry, insulation, landfill, notice, old, outdoor, pollution, protection, red, removal, restricted, safety, security, sign, soil, symbol, toxic, warning, warning sign, white,