Ключевые слова: auger, background, borehole, building, clay, construction, digging, dirt, drill, drilling, earth, engineer, engineering, equipment, factory, field, gas, ground, heavy, highway, industrial, industry, machine, metal, mining, mud, natural, nature, oil, pipe, piping, power, process, pump, rig, rotary, sand, site, soil, technology, vehicle, water, well, work, workplace,