Ключевые слова: activity, auger, bore, bucket, builder, business, casing, casting, cement, component, concrete, construction, contractor, danger, digger, dirtied, drill, driver, driving, duty, earthwork, equipment, excavation, formwork, foundation, function, grade, heavy, heavy machine, hole, hydraulic, industry, job, labourer, liquid, machine, machinery, massive, men at work, pile, piling, platform, pour, pump, rotary, safety, specialist, structure, track, tube,