Ключевые слова: activity, bore, borehole, boring, building, clay, concrete, construction, construction site, development, digging, dirt, dredger, drill, drill pipe, drilling, earthworks, engineer, engineering, equipment, excavation, excavator, foundation, freeway, gravel, heavyduty, highway, highway construction, hydraulic, industrial, industry, machine, machinery, mining, mover, process, quarrying, road, rotary drill, soil, structure, technology, tools, tractor, transportation, vehicle, working, workplace,