Ключевые слова: activity, block, bone, caution, city, concrete, construction, construction industry, covering, debris, development, dirt, dirty, drain, drainage, earth, environment, equipment, excavation, foundation, get, gravel, ground, heavy, industrial, infrastructure, iron metal, laboratory, maintenance, materials, metal, no people, outdoor, project, renovation, repair, rough, rusted, safety, site, steel, street, structure, surface, surface level, tape, tools, urban, worksite,