Ключевые слова: activity, building, construction, dirt, dust, engineering, environment, equipment, excavation, focus, gear, gravel, hard, has, heavy, industry, laboratory, landscape, loading, machinery, manual, materials, mining, movement, operator, outdoors, process, productivity, progress, rays, rocks, rural, safety, silhouette, site, skills, sun, sunlight, sunrise, surgery, teamwork, terrain, transport, use, vehicle, work, worker, workforce,