Ключевые слова: aggregate, building, cobblestone, commercial, concrete, construction, crane, crush, crusher, demolition, derrick, device, diesel, digger, driver, dust, engineering, environment, equipment, excavate, excavator, fracture, gravel, heap, industrial, industry, machine, mechanical, mineral, mound, outdoor, pebble, pile, pit, pole, pound, preparation, quarry, quarrying, rough, scoop, site, stack, steel, stone, summer, technology, vehicle, waste, work,