Ключевые слова: architecture, block, blue, build, builder, business, cement, city, concrete, construct, construction, contractor, crane, development, engineer, engineering, equipment, estate, foreman, hardhat, helmet, high, industrial, industry, job, labor, machine, machinery, men, metal, new, occupation, people, person, progress, project, real, safety, scaffolding, site, sky, steel, structure, urban, work, worker, yellow,