Ключевые слова: 3540, 40s, adult, african, american, brick, build, builder, building, business, carrying, clay, commerce, concrete, construction, development, engagement, engineer, engineering, equipment, ethiopian, experienced, expertise, hardhat, helmet, house, industry, job, load, male, man, material, nigerian, occupation, outdoor, outdoors, person, product, protective, site, stacked, storage, store, structure, supplies, tanzanian, warehouse, work, worker, workplace,