Ключевые слова: 2015, archaeology, beginnings, boring, cement, color image, construction, construction site, depth, digging, direction, drill, dust, engineering, environment, equipment, excavation, geology, horizontal, illumination, india, indoors, industrial, industry, infrastructure, labor, lighting, machine, machinery, metal, mining, new, no people, north america, operation, power, project, rock, station, subway, technology, transport, transportation, travel, tunnel, underground, usa,