Ключевые слова: activity, architecture, background, build, builder, building, cement, concrete, construction, contractor, employment, equipment, gravel, industrial, industry, infrastructure, job, labor, machine, machinery, man, material, metal, mix, mixer, mixing, mortar, outdoor, pavement, paving, pour, public, reinforcement, road, sand, service, sidewalk, site, steel, street, surface, technology, tool, truck, urban, wet, work, worker,