Ключевые слова: activity, architecture, blue, build, builder, building, business, casting, cement, concrete, concreting, construction, contractor, development, engineering, equipment, foundation, hardhat, heavy, house, industrial, industry, job, labor, laborer, machine, machinery, male, man, manual, material, mix, mixer, mixing, outdoor, pour, project, pump, safety, site, steel, structure, technology, transportation, truck, tube, urban, vehicle, work, worker,